Water Purifiers Archives – The Green Optimistic

Zero Mass Water’s Solar Panels Pull Clean Drinking Water Out of Thin Air

Matias Prieto — Mon, 22 Apr 2019 17:31:35 +0000

Around the world, approximately 2.1 billion people do not have immediate access to clean drinking water. A startup called Zero Mass Water aims to make clean water easily accessible to more people around the world. In 2015, it launched its first product, Source — a solar panel array that harvests and filters water from vapour in the air. The […]

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Bacteria that feed on pollutants to produce electricity

Effie P — Fri, 15 Mar 2019 19:52:14 +0000

Scientists of the Washington State University fished multiple communities of extremophile bacteria from the alkaline hot springs of the Heart Lake Geyser Basin area, in Yellowstone National Park. The bacteria, that thrive in environments with temperatures between 40-90 degrees Celsius, feed on pollutants and dump the electrons produced during the metabolic processes on metal surfaces-essentially, […]

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Monks apply space technology to make beer-brewing more sustainable

Effie P — Mon, 24 Dec 2018 11:30:07 +0000

The monks of La Trappe Abbey brewery in the Netherlands decided to renovate their factory and achieve more sustainable use of water in the beer-brewing process. In their quest for optimal measures, they turned to the suite of techniques developed by the European Space Agency (ESA). Their project secured funding from the European Union’s Horizon […]

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Aluminum Oxide Filter Made With Gallium to Make Toxic Water Safe and Drinkable

Matthew Fiala — Mon, 01 Oct 2018 19:22:39 +0000

Nano filters made of aluminum oxide could be cheaply produced using virtually no energy from a fix amount of liquid metal gallium. Researchers discovered when aluminum is added to the core of liquid gallium at room temperatures, nano-sheets of aluminum oxide are quickly produced at the surface of the gallium. The aluminium oxide nano-sheets are […]

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Elon Musk Commits to Solve the Flint Water Crisis

Arsenij Percov — Fri, 13 Jul 2018 19:35:17 +0000

It was 2014 when the Flint water crisis started. It was caused by changing the source of drinking water from Lake Huron and the Detroit River to the much cheaper Flint River. After that, because of insufficient water treatment, lead leached from the pipes into the drinking water, exposing 100,000 residents. It caused 12 deaths […]

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Natural Gas Harnessing Could Help Harvest Clean Atmospheric Water

Guest Contributor — Wed, 11 Jul 2018 20:39:54 +0000

Scientists from the University of Texas, Austin, may have figured out a way to kill two environmental birds with one stone. Using waste products in the form natural gas from fracking to collect water stored in the atmosphere could help to reduce environmental pollution and provide clean water as sources become scarcer. So, where can […]

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7 Reasons Why New Cell-Inspired Membrane Revolutionizes Water Treatment and Metal Recovery

Janina Lazo-Cruz — Fri, 16 Feb 2018 07:54:48 +0000

Gecko’s feet for adhesion, lotus leaf for hydrophobicity, moth’s eyes for reduction of reflectivity in solar cells, and electric eels for power generation – these are just a few examples of how we can study nature and apply them in improving current technologies. This technique is called biomimicry. Researchers in Australia, led by Benny Freeman, […]

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Energy-saving Microfilter for Fracking Water Removes Over 90% Impurities

Janina Lazo-Cruz — Wed, 27 Sep 2017 05:12:38 +0000

An average of more than five million gallons of water are used in a hydraulically fractured well, and only a small portion, around 10 to 15 percent of this water is recoverable during the backflow process. “This makes it very important to be able to re-use this water,” Rice University chemist Andrew Barron said. Researchers […]

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New Mold Technique Puts BioSand Water Filter Within Reach of Everyone

Nicholas Say — Wed, 01 Feb 2017 20:00:55 +0000

BioSand water filtration represents one of the most promising technologies we have when it comes to low cost water filtration. A new mold technique has dropped the price of building a BioSand water filtration, and made it possible to construct one almost anywhere. Sand filtration is on old technique for purifying water, […]

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How Spent Coffee Grounds Could Clean Waters from Two Toxic Metals

Ovidiu Sandru — Thu, 06 Oct 2016 21:26:12 +0000

Lead and mercury-contaminated waters may soon be treated with something that you leave behind every morning: coffee grounds. A team of italian researchers have published a report that addresses the issue of waste reduction associated with coffee grounds. What they did was to integrate spent coffee grounds in a form filter – what they got […]

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New Algae-Based Water Filter Removes Even Viruses

Courtney Lepping — Fri, 20 May 2016 20:44:55 +0000

A new filter paper produced by Uppsala University scientists in collaboration with German virologists promises to improve water filtration by removing resistant viruses. Globally, many people lack access to safe drinking water, and being that water-derived infections is a global cause for mortality, microorganisms that are resistant to disinfection must be removed. Although water-derived deaths […]

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Watly, Solar-Powered Computer that Provides Clean Water, Electricity and Internet

Mila Luleva — Mon, 18 Apr 2016 19:50:15 +0000

Watly is the world’s largest solar-powered computer, which provides clean drinking water, green solar power and internet connectivity. In many parts of the world, access to clean drinking water and electricity is often a luxury. Unfortunately, this does not only lead to inconvenience. In fact, limited availability of clean water results in vast spreading of […]

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Hamwells, Guilt-free Luxury Shower Saves Water and Energy

Mila Luleva — Tue, 08 Dec 2015 22:26:20 +0000

Hamwells guilt-free shower saves 80% energy and 90% water by filtering and recirculating used water, without having to sacrifice the luxurious feel. Since the water crisis in California became noticeably severe even for the biggest deniers and non-believers, we have covered here quite a number of ways in which every household can save some precious water. […]

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SAROS, Portable Desalination Plant Powered by Waves

Mila Luleva — Mon, 23 Nov 2015 16:33:50 +0000

SAROS is one of a kind, portable desalination plant, which converts sea water into drinking water, powered by sea waves. With climate change taking its toll, fresh water crisis is spreading incredibly fast, affecting new areas in both the developing and the developed world. New technological advances do appear, but before a highly efficient and […]

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New Nanomaterial Could End the Water Crisis

Mila Luleva — Fri, 13 Nov 2015 14:23:24 +0000

New nanomaterial, developed by US scientists, promises huge cost savings and boost of efficiency of water desalination. Droughts are posing severe risks to many communities around the world. If some years ago lack of access to fresh water resources was mostly a problem of the developing world, now there is simply no guarantee for anyone […]

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Affordable Wood Pulp Membrane Turns Seawater into Fresh Water

Mila Luleva — Wed, 21 Oct 2015 15:59:03 +0000

Scientists developed a new cheap and efficient method to turn seawater into fresh water using cheap fiber from wood pulp. Fresh water scarcity is becoming a huge problem for numerous communities around the world. With population and temperatures increasing continuously, more and more fresh water sources dry out or become exhausted, posing a huge threat […]

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Seghal Foundation’s Innovative Recharge Well will Help Developing Countries

Annika Tostengard — Thu, 15 Oct 2015 05:39:06 +0000

In rural India, access to clean drinking water is hard to come by. The country is the second most populated in the world, so that leaves a lot of people without fresh water. Especially since the population will only continue to grow, it’s important to fulfill this basic need. Luckily, the Sehgal Foundation has come up […]

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Shower of the Future, Saves Water and Electricity

Mila Luleva — Fri, 14 Aug 2015 12:28:58 +0000

The Shower of the Future is a smart technology, which lets you spend as much time as you need under running water, yet limits your water use to only five liters and saves energy. Fresh water shortage is quite a pressing issue these days, but regardless of how much effort we all put to save […]

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SunSaluter, DIY Solar Tracker That Boosts Efficiency and Purifies Water

Mila Luleva — Wed, 29 Jul 2015 20:10:16 +0000

DIY solar tracker by SunSaluter uses water and gravity to boost solar panel efficiency. It filters water too. We know by now that solar tracking systems boost efficiency of solar panels incredibly. This has been demonstrated by quite a number of engineers and researchers, who have worked on perfecting the technology for quite some time […]

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Biodegradable Nanoparticles Purify Water Effectively, MIT Study

Mila Luleva — Fri, 24 Jul 2015 19:45:03 +0000

Biodegradable nanoparticles remove toxic contaminants from water and soil without leaving byproducts behind. Scientists from University of Regensburg, Germany, and their colleagues over at the MIT, discovered a way to quickly and efficiently remove dangerous pollutants from water and soil. The method, which uses nanoparticles, is much better than any existing technology, as it is […]

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Fontus, Solar Powered Device That Harvests Water From Air

Mila Luleva — Fri, 24 Jul 2015 19:42:21 +0000

Fontus is a smart compact solar-powered device that can pull out moisture from the air when attached to a moving bicycle. Hydration is the key to maximum performance at any sport. Drinking enough water is the easiest and safest way to ensure that your body is operating the way it should, without putting any pressure […]

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MIT’s New Solar-Powered Desalination Tech Wins USAID Award

Satya Sivani — Fri, 08 May 2015 19:45:32 +0000

A new solar-powered desalination technology called “photovoltaic-powered electrodialysis reversal system”, which had been developed by the MIT, has won the top $140,000 Desal prize from the U.S. Agency for International Development (USAID). As there are so many causes like irregular monsoons, drought, global warming etc., for the water scarcity, the world is continuously searching for permanent solutions. […]

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Sino Skyscraper to Suck up the Smog

Ari Luis — Wed, 22 Oct 2014 04:10:51 +0000

The Great Leap Forward can be credited not only for years of neck break growth and for lifting up millions of people out of poverty in China. Unfortunately, it also left in its wake pollution, and lots of it, as the country burned more coal to drive industry, factories spewed more emissions and more people […]

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Artistic and Functional Potable Water for Parched Areas

Benji Jerew — Wed, 06 Aug 2014 17:09:35 +0000

Not everyone has easy access to potable water, some of the world’s poorest reduced to drinking whatever is available or being forced to walk for miles to get whatever is available. For some of us, potable water is as close as the nearest tap, turning a handle brings treated water right into our kitchens. Of […]

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Are Desalination Plants Solution to World’s Fresh Water Crisis?

Mila Luleva — Mon, 23 Jun 2014 18:54:44 +0000

To make ocean salt water drinkable- this is the ultimate dream of numerous researchers and engineers. And many of them have already made quite an attempt to do so. You do not need to search hard in order to find out more about all the incredible desalination technologies that have been regularly popping-up on every new […]

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PackH2O Helps Millions Carry Clean Drinking Water Home

Mila Luleva — Fri, 09 May 2014 06:01:16 +0000

Any invention that could transform the world we live in into a greener and better place is already something worth applauding. But when this same invention not only does this, but also directly influences quality of life of millions, especially in developing countries, there is no way it will not make the green headlines. One […]

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Pluvia Converts Rainwater to Electricity, Purifies It

Mila Luleva — Fri, 28 Mar 2014 14:43:08 +0000

Pluvia is made of a microturbine, 12-volt rechargeable batteries, generator, pipe, pump, charcoal filter and a storage tank. Rain has received quite a bit of attention over the past decade or so, as the effects of climate change on the Earth’s hydrologic cycle are extreme, strong rainfall events in some parts of the world and increased […]

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WaterFX’s New Desalination Process Uses Concentrated Solar Power

Mila Luleva — Fri, 28 Feb 2014 16:39:10 +0000

In many parts of the world, including California, South Australia, Qatar, among others, desalination of sea water is a practice, without which the intensity of drought and lack of drinking water would have had an even more devastating impact than what they have now. However, the huge amount of energy that is consumed by desalination […]

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WaterFX Solar-Power Water Purification Plant Goes Live This Year

Benji Jerew — Tue, 18 Feb 2014 16:13:47 +0000

Typical water purification is an expensive and complicated process, but a new solar-powered version could produce clean water for crops in California’s Central Valley There are billions of gallons of water in the Central Valley, actually, but there’s a problem. The water is contaminated with toxic levels of salt, selenium, and other heavy metals that […]

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How Ceramic Water Filters Save Lives in World’s Most Polluted Rural Areas

Mila Luleva — Fri, 03 Jan 2014 19:42:26 +0000

Access to clean drinking water in many parts of the world is what determines whether a life can be saved or lost. This is especially the case in parts of Africa, where the levels of pollution are way above any regulatory limits, while income is so low that even the cheapest water purification mean seems […]

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New Low Cost, Low Energy Water Treatment Plant Engineered By UK Scientists

Mila Luleva — Fri, 01 Nov 2013 10:09:23 +0000

A team from the University of Exeter designed and built a pilot water treatment plant, specifically engineered to remove contamination from waste water from mines while using much less energy than any of the existing plants. The scientists claim that the plant, in its current state, reduces the capital cost by 30%, and has the […]

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US and UK Collaborate on Clean Water Initiatives

Leigh Hutchens — Wed, 30 Oct 2013 01:16:15 +0000

A new transatlantic collaboration, Clean Water for All, will bring leading water engineers from the United States and the UK together to tackle problems of providing clean, sustainable water supplies. The 2013 Global Grand Challenges Summit initiative between the national academies of engineering in the UK and US brings together leading international engineers, innovators, and […]

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Self-Contained Portable System Purifies and Transports Water Using Solar Panels

Mila Luleva — Mon, 21 Oct 2013 18:17:31 +0000

The availability of clean drinking water in many areas around the world is limited. Engineers and scientists are continuously searching for solutions to this pressing problem, developing technologies and gadgets that can purify water in a matter of hours. The guys from Water One World, however, have come up with something much better. Their creation, […]

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WADI Solar Powered Device Indicates When Water is Bacteria-Free

Mila Luleva — Thu, 10 Oct 2013 17:52:47 +0000

When the invention of plastic PET bottles for purification of contaminated water hit the news, many believed that there is finally an affordable and easy solution to providing clean drinking water to areas and communities where access to the precious resource is limited. All it takes is to fill the bottle up, place it in […]

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Making Saltwater Drinkable: Desalination Already Happening in Nature

Adele Hall — Thu, 10 Oct 2013 04:52:17 +0000

The water crisis in our world today revolves not around water scarcity, but water quality. One of every six people doesn’t have access to safe drinking water. This is ironic considering about 70% of our planet is covered in water. Of course, that water is salt water. The process of desalination has been a very […]

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Fog Harvesting Yields Potable Water More Efficiently, MIT [Video]

Benji Jerew — Fri, 06 Sep 2013 14:25:28 +0000

There are many places in the world that have limited sources of potable water, whether because of limited rainfall or polluted water sources. Without sufficient potable water, the health of possibly billions of people remains at risk. For example, Lima, Perú, is the second-largest capital city located in a desert. With a population of 8.5 […]

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Wastewater Treatment Could Have Huge Impact for Emerging Economies

Mila Luleva — Fri, 06 Sep 2013 14:16:59 +0000

Treating and recycling wastewater might be the key to solving the water scarcity problem in many countries around the world, according to new research from Japan’s Tottori University and U.N. University’s Canadian-based Institute for Water, Environment and Health (UNU-INWEH). Although the price of new treatment facilities is said to be the main reason to why […]

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Porous Gel Made of Silver Nanoparticles Provides Solution to Drinking Water Shortage

Mila Luleva — Mon, 26 Aug 2013 18:18:34 +0000

A team of scientists from Nanyang Technological University and University of Colorado developed a method to purify contaminated water using silver nanoparticles. The technology, unlike any of the existing ones, is cheap, fast, effective, and does not require any electricity. The work was published in the latest issue of the journal Environmental Science and Technology. […]

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The Right Bacteria in Drinking Water Keeps it Safe

Leigh Hutchens — Thu, 15 Aug 2013 01:06:18 +0000

A research team from the University of Sheffield’s Faculty of Engineering made it their mission to study four bacteria known to exist in the city’s drinking water to in order to determine how to best keep the water supply safe while also limiting the need for chemical treatments. Their research involved biofilms – typically benign […]

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Panasonic’s New Water Purification Technology Runs on Solar Power

Benji Jerew — Wed, 07 Aug 2013 14:53:47 +0000

Modern water purification methods exist that can easily get rid of water contaminants, even salt and bacteria, but some organic toxins and toxic metals, such as arsenic and hexavalent chromium need special processing [read: expensive and carbon-intensive] to be removed. Water purification by reverse osmosis, filters, and chlorination does not affect these toxic metals or […]

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Sweat Turned to Potable Water in UNICEF Campaign

Mila Luleva — Fri, 19 Jul 2013 07:28:15 +0000

An incredible sweat-extraction machine, which takes the moisture from sweat-laden clothes and turns it into fresh drinking water, is built in Sweden and used to promote a campaign by Unicef. The invention filters out the bacteria, salt and fibres from the clothing, and lets only the water molecules in the form of steam to pass […]

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Drinkable Water Obtained by Engineers from Sewage, Bill Gates Involved

Leigh Hutchens — Thu, 11 Jul 2013 02:50:38 +0000

Engineers from the University of Missouri and Duke University can now turn human waste into drinkable water. Assisted by a $1.18 grant from the Bill & Melinda Gates Foundation and its Reinvent the Toilet challenge, engineers have the goal to develop a working prototype at Duke University within 15 months that can turn sewage into […]

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“Water Chip” Nanoscale Desalination Developed at University of Texas

Benji Jerew — Wed, 10 Jul 2013 13:02:10 +0000

Access to potable water is especially critical near the ocean, where overuse of wells can depress the freshwater table and allow saltwater to creep in. Desalination isn’t accessible to everyone though, due to the size and expense of desalination plants. Water filters can be used to remove contaminants from water, including most protozoa, bacteria, and […]

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Composite Nanomaterials Remove Microbes and Chemical Contaminants From Drinking Water

Mila Luleva — Wed, 08 May 2013 14:52:57 +0000

A prototype developed by researchers at the Indian Institute of Technology Medras in Chennai, India, purifies 10 litres of water at a time, making it free from harmful contaminants and bacteria. The study was published in the latest issue of the journal Proceedings of the National Academy of Sciences. It shows how a mixture of […]

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Nano Device Based on AcrB Protein Offers Solar-Powered Water Filtering

Ovidiu Sandru — Wed, 24 Apr 2013 12:25:01 +0000

A new nano-filter powered by sunlight can clean large bodies of water from antibiotics and carcinogens. The device, developed by the University of Cincinnati, is much more effective than the activated carbon that’s currently being used for this purpose. Two bacterial proteins absorb about 64 percent of the antibiotics in surface water. For a comparison, […]

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New Nanomaterial Purifies Water, Produces Energy And Improves Lithium-Ion Batteries

Mila Luleva — Thu, 21 Mar 2013 19:13:31 +0000

Generating hydrogen, producing and desalinating water and creating energy are just some of the properties of a brand new nanomaterial, developed by scientists at Nanyang Technological University (NTU) in Singapore. The Multi-use Titanium Dioxide (TiO2) was invented by the Associate Professor, Darren Sun and his team in a five-year long study. The material is cheap […]

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Perforene: A Graphene Water Filter 100 Times More Efficient

Benji Jerew — Wed, 13 Mar 2013 16:03:20 +0000

True, the technology is a couple years away, but graphene-based Perforene developed by Lockheed could revolutionize desalination and water purification. Lack of freshwater is becoming an increasingly desperate situation, typical desalination is energy intensive and expensive, but a graphene water filter could be 100x more efficient. Graphene, a nanoscale material made up of pure carbon, […]

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Lima, Perú – Freshwater From a Billboard, University of Engineering and Technology

Benji Jerew — Wed, 27 Feb 2013 21:36:56 +0000

If there’s one thing that mars a skyline worse than a building in front of your favorite mountaintop, it’s probably a billboard. Of course, a billboard is put there in your face for exactly that reason, so you take notice of it. In Lima, Perú, the University of Engineering and Technology [UTEC] has re-imagined the […]

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Toxins Removed from Water by New Metal-Organic Framework

Leigh Hutchens — Thu, 24 Jan 2013 07:30:44 +0000

A new Metal Organic Framework (MOF) may have the ability to filter environmental toxins out of water, thanks to a team of scientists at Monash University at CSIRO who developed it. MOFs are comprised of clusters of atoms that are connected by organic molecules. MOFs have identically sized pores, making it very easy to capture and […]

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Chlorinator Water Treatment System for Developing Countries Developed by GE Engineer

Benji Jerew — Sat, 12 Jan 2013 08:19:39 +0000

One of the most basic human needs is clean drinking water, which for millions of people in developing countries is simply not available. Without access to clean water, the population is vulnerable to water-borne diseases, something as simple as dysentery killing thousands every year. Unfortunately, getting clean water to these people is often expensive and […]

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Graphene Oxide Offers New Hope for Water Decontamination

Benji Jerew — Wed, 09 Jan 2013 17:31:58 +0000

Water is the universal solvent on the planet, and without it, minerals and nutrients can’t be transported. Life would cease to exist. This property of water, though, means it also transports and disperses toxins just as easily, including radioactive materials. Cleanup around nuclear sites, such as the recent disaster at the Fukushima Daiichi nuclear power […]

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Improved Filter for Treating Olive-Processing Wastewater

Benji Jerew — Mon, 24 Dec 2012 21:17:58 +0000

Olives and olive oil have been touted for centuries as part of a healthy diet, benefits including lowering blood pressure and the risk of heart disease, as well as defense against certain types of cancer. In order for these products to make it to your table, though, a certain amount of processing is required, which […]

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14 Year-Old Invents Cheap Solar Powered Water Purification System

Mike Sandru — Tue, 18 Dec 2012 20:34:24 +0000

As teenagers, most of us cared more about say, a humiliating acne outbreak or which classmate we’d ask to homecoming, rather than the difficulties of developing countries. When she watched some Indian children drinking from a pool of stagnant water, Deepika Kurup, a 14-year-old living in Nashua, New Hampshire made it her goal to help […]

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Severe Water Crisis Could Hit the World by 2025 (Infographic)

Ovidiu Sandru — Thu, 06 Dec 2012 09:00:20 +0000

When you wash your car, when you extend that already extra-long shower or simply when you flush the toilet, think for a moment that you won’t be able to do it as cheap and as easily only a decade from now. The world’s water resources are on a downward-facing slope, and there’s much we can […]

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Water Purification Sachets to Aid Developing Countries

Janina Lazo-Cruz — Fri, 30 Nov 2012 12:41:29 +0000

With the aim to provide developing countries a cheap and easy way to purify water, Procter and Gamble (P&G), a giant multinational consumers good company, has developed a small water purification system packed in small sachets called ‘Pur’. Each sachet can purify 10 liters of brown, murky water into clear and drinkable water, enough for […]

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Coca-Cola and Dean Kamen Partner for Clean Water

Benji Jerew — Thu, 29 Nov 2012 07:35:58 +0000

One of the world’s growing problems, not only in developing countries, is access to clean drinking water. Over ¾ billion people could benefit from a partnership between Coca-Cola Corporation and Dean Kamen, the inventor of the Segway. Kamen’s company DeKa, also holds patents on stirling engine designs, the AutoSyringe drug infusion pump, and even an […]

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Phosphine-Functionalized Resins Capturing Gold From Wastewater

Janina Lazo-Cruz — Wed, 31 Oct 2012 21:16:28 +0000

The extraction of toxic but valuable metals such as nickel, chromium, lead, and mercury, from wastewaters produced in various industries such as semiconductor and mining has been a serious challenge to these industries. Unlike the commonly used ion-exchange resins that bind with metals unspecifically, a newly developed phosphine-functionalized resins bind with metals selectively via coordination […]

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A Novel Water Treatment Method Using Simple Electrochemistry

Janina Lazo-Cruz — Sat, 27 Oct 2012 06:25:32 +0000

Various water treatment systems have sprung up to increase the quality of drinking water. For remote and underdeveloped areas, unfortunately, these technologies are not within reach. This situation led two chemists to a simple, yet brilliant idea to transform bore water into a potable one. Through electrochemistry, Dr. Hilary Nath and Associate Professor Alan Langdon […]

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Graphene Membranes Could Aid Water Filtering

Mila Luleva — Wed, 24 Oct 2012 17:16:40 +0000

Graphene has proven itself as not only a great conductor for heat and electricity, but also a perfect substance for a barrier film and bullet repellent. However, researchers from MIT, Oak Ridge National Laboratory, have discovered that although the material seems impenetrable, by building large membranes from single sheets of graphene grown by chemical vapour deposition, small […]

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Cleaning Contaminated Water Using Photocatalysts

Mila Luleva — Mon, 22 Oct 2012 14:04:47 +0000

Solar Water Disinfection is a well-known technique for cleaning contaminated water with ultraviolet rays. Although this technique has been investigated by many, Deepika Kurup still managed to find gaps that can be filled. She looked at two photocatalysts and tested whether they can accelerate the UV-decontamination power of sunlight. In particular, she studied titanium dioxide […]

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New OSU Process Recycles Waste Water with Record Efficiency

Ovidiu Sandru — Mon, 03 Sep 2012 15:57:13 +0000

Waste water has been found to contain important amounts of energy, trapped inside organic molecules. A new technique coming from a team of researchers at Oregon State University in Corvallis could produce as much as 2.87 watts per liter of wastewater. The remaining matter could be further recycled into biodegradable plastic. The team led by […]

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New Wastewater Treatment Plant From Siemens Saves Energy by Using Bacterial Heat

Ovidiu Sandru — Mon, 13 Aug 2012 18:09:41 +0000

Siemens has recently invented a new biodrying process that can convert sewage sludge into usable elements – all of this while saving a great deal of energy. Thus, their “mechanically enhanced biodrying” doesn’t require any external heat source, but produces its own with the help of the microbes in the sludge, which costs about 30 […]

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New High-Performance Water Desalination Technique Uses Nanoporous Graphene

Maria Reyes — Fri, 29 Jun 2012 18:03:24 +0000

About 97 percent of the earth’s water is found in seas and oceans, yet only a fraction of the world’s potable water comes from desalination of seawater. The looming water crisis drives the search for efficient, cheap and sustainable desalination techniques to recover potable water from seawater. In a new study published in Nano Letters, […]

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Google Uses Recycled Wastewater to Cool Douglas County Data Center

Ovidiu Sandru — Tue, 20 Mar 2012 12:10:43 +0000

A new Google initiative wants to recycle wastewater to cool its hot Douglas County, Georgia data center. By collaborating with the local water authority (The Douglas County Water and Sewer Authority – WSA), Google will not only avoid using freshwater for cooling purposes, but will also partially clean the wastewater (30%), thus helping the community use […]

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Microbes and Saltwater Used to Produce Electricity from Wastewater and Waste Heat

Ovidiu Sandru — Fri, 02 Mar 2012 18:15:21 +0000

The difference between saltwater and freshwater can produce electricity. Microbial fuel cells use bacteria to degrade organic matter to also produce energy. Great as they are, these two technologies have had limitations in the past, but now a team of scientists unite them in a system that eliminates most of their shortcomings. The team, led […]

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New Nanofiber/Nanotube Material Filters Radioactive Contaminated Water

Ovidiu Sandru — Thu, 03 Nov 2011 17:37:52 +0000

A new innovation from Professor Huai-Yong Zhu at Queensland’s University of Technology can clean up all the water contaminated by radioactive materials. The material Zhu made is based on nanofibers and nanotubes, and uses an approach that had never been tested before. Titanate nanofiber and nanotubes are the materials he uses, to be more exact. […]

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New Photo-Catalytic Fuel Cell Can Both Clean Wastewater and Produce Electricity

Mircea Sandru — Mon, 29 Aug 2011 15:08:12 +0000

People have so far created many water purifying devices and we always presented them here on The Green Optimistic. Now, Yanbiao Liu and his colleagues from Shanghai Jiao Tong University have created the photo-catalytic fuel cell, a new device capable of both cleaning wastewater and producing electricity from it. The photo-catalytic fuel cell uses light […]

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Big Spring Town, TX, Recycles Urine For Drinking Purposes

Mircea Sandru — Tue, 09 Aug 2011 17:11:03 +0000

Maybe inspired by The Adventures of Bear Grylls, some people in Texas started to recycle urine in order to fight drought. Big Spring, a town in Texas, has been going through the worst drinking water crisis lately, so, authorities decided to take advantage of every possible source of water to overcome this critical moment. John Grant, […]

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Homemade Water Distiller Built in Less Than an Hour

Mircea Sandru — Tue, 09 Aug 2011 17:03:49 +0000

Here is a simple but efficient homemade water distiller that should be able to help us meet our daily water needs. As one of the most important elements of life, water can cause serious inconveniences when missing. Speaking of potable water, you have to admit that the idea of drinking tap water has become, for […]

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Aquacube Water Treatment System Provides Clean Water in Underdeveloped Countries

Mircea Sandru — Wed, 03 Aug 2011 14:25:20 +0000

Water, a key element of life, has always been one of the most exploited natural resources. Even if we have a lot of water (71 percent of the earthÃ¢â‚¬â„¢s surface), in some places on earth drinking water still remains an unsolved issue. Especially with the increasing population and industrial development, our clean water resources dropped drastically in recent years.

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NASA Forward Osmosis Bag Transforms Urine Into Drinking Water

Ovidiu Sandru — Thu, 07 Jul 2011 18:27:30 +0000

If you ever saw Bear Grylls and his gross pee-drinking desert adventure, then you know you shouldn't drink that liquid (mostly when it's hot like soup and stinks like nothing else on Earth). NASA has nevertheless discovered a solution to this "problem" by inventing a bag that filters anything, from pee to dirty water and transforms it into a drinkable liquid.

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New Graphite-Coated "Super Sand" Filters Water Much More Efficiently

Ovidiu Sandru — Tue, 28 Jun 2011 18:26:48 +0000

With much of the world still lacking access to safe drinking water, the need for more efficient filtration systems is higher than ever. Wei Gao, from Rice University in Texas, has however invented a graphite-coated type of sand that is cheap to produce and much more effective at filtering water.

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New Aluminum Alloy Helps Generate Clean Water and Cheap Electricity

Ovidiu Sandru — Wed, 04 May 2011 16:07:12 +0000

A new aluminum alloy could soon clean out water and at the same time generate electricity for afflicted areas. Purdue University researchers Jerry Woodall and Go Choi have been working on the alloy of aluminum, gallium, indium and tin that could split polluted or salt water into hydrogen and oxygen and then reunite them to generate electricity and pure water.

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Clean Water Harvested From Fog by Beetle-Inspired Device

Mircea Sandru — Mon, 25 Apr 2011 19:55:53 +0000

Inspired by Stenocara gracilipes, a beetle found in the Namib Desert, MIT engineer Shreerang Chhatre developed a simple and efficient device that can harvest fog. Being actually an inexpensive way to provide clean drinking water, this fog harvesting device could be perfect for poorer countries, where water scarcity is still an unsolved problem.

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Drinkable Water Extracted From Diesel Fuel Now Possible

Mike Sandru — Thu, 21 Apr 2011 19:52:55 +0000

Apparently, necessity teaches us better than any ecological drive, or at least this seems to be the case for the U.S. military. Missions can't do without water, but the amounts they need are very hard to transport. So the Oak Ridge National Laboratory has found a way to ease the pain of carrying large water supplies.

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IBM Invents Way to Both Cool Down Concentrated Photovoltaics and Desalinate Water

Ovidiu Sandru — Wed, 20 Apr 2011 14:14:18 +0000

IBM is seemingly more and more concerned about green technologies, and now invests in a project that can solve the problem of cooling solar cells that would otherwise be hard to use because of the high temperatures they're exposed to (120°C), aka concentrated photovoltaics.

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Contaminated Waters to Be Treated with Forest Debris and Crushed Shells

Mike Sandru — Mon, 18 Apr 2011 18:18:26 +0000

With the risks nuclear reactors are posing in every country, a solution had to be found for waste to be extracted. Thanks to researchers at the University of North Carolina, a material has been found, which on top of everything is 100% natural: forest debris mixed with crushed crustacean shells.

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Solarball: Ultra-Cheap Solar-Powered Water Purifier for The Poorest of Us

Ovidiu Sandru — Tue, 22 Mar 2011 18:28:06 +0000

Technology doesn't always have to be complex to help people. Such is the case of a simple solar-powered water purifier designed by Monash University graduate student Jonathan Liow to help people in poor countries that have no access to drinkable water sources. The Solarball, his invention, can produce up to three liters of water per day.

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Revolutionary Water Purifier Made From Banana Peels Eliminates Toxic Metals

Ovidiu Sandru — Thu, 10 Mar 2011 22:33:19 +0000

A water purification system developed recently by Gustavo Castro and his colleagues from Brazil is actually based on banana peels, with no other complex filters or other electronics involved.

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The United Arab Emirates to Have a New Solar-Powered Desalination Plant

Mike Sandru — Sat, 22 Jan 2011 15:33:15 +0000

According to the English version of Dubai News, UAE's new solar energy desalination process "helps reduce cost of water treatment, especially in desert areas where dust and high temperatures impair the efficiency of solar panels used in the existing desalination system."

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Photocatalysis-Based Water Purifier Uses Sunlight to Break Down Impurities

Ovidiu Sandru — Tue, 11 Jan 2011 17:25:55 +0000

Cleaning water effectively so it becomes potable is an important issue in poor countries nowadays. Using solar power, a team from the Hong Kong Polytechnic University led by Xuming Zhang, built a water purifier that improves the technology with a novel approach.

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Water Desalination Made Cheaper With Oasys Water's New Technology

Ovidiu Sandru — Fri, 17 Dec 2010 14:55:04 +0000

So far, there's been plenty of water in the oceans and seas, but that's salty and undrinkable. Oasys Water, a company specialized in desalination, comes with a solution to the scarcity of water in some regions and also cuts the costs for producing it.

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LG Consolidates Position In The Wastewater Treatment Industry With Its First MBR Process

Mike Sandru — Wed, 01 Dec 2010 17:08:24 +0000

LG Electronics revealed last week an innovative solution to wastewater treatment, just two months after it had announced to enter the water treatment business. The solution is provided by the Green Membrane Bioreactor (G-MBR) process, a project engineered by means of the latest advanced technology, which places LG in the major players league of water treatment industry for a long term.

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Aeolus: Wind-Powered Mechanical Desalination System

Mike Sandru — Fri, 22 Oct 2010 13:54:59 +0000

There are more than two billion people worldwide with no access to drinking water. This is the reason why researchers over the globe are trying to find solutions such as desalination.

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MIT's New Water Desalination System Powered by Solar Energy

Mike Sandru — Mon, 18 Oct 2010 06:15:16 +0000

A group of researchers from MIT's Field and Space Robotics Laboratory (FSRL) in the Department of Mechanical Engineering found a new way to combat the lack of potable water from disaster zones and remote regions.

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Solar Container – A New Water Purification System Powered by Wind and Solar Energy

Mike Sandru — Thu, 16 Sep 2010 12:15:47 +0000

The Swiss manufacturer Trunz Water Systems and a California-based reverse osmosis company, Spectra Watermakers have developed a new eco-friendly water purifier designed for use in disaster stricken areas where conventional energy sources are unavailable or too expensive.

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Nanotube-Based Water Purifier From Stanford Filters Water Quicker, Kills Bacteria

Ovidiu Sandru — Fri, 03 Sep 2010 13:24:35 +0000

Dangerous bacteria can often hide in the water you drink, but they're not harmful until they reach a certain number to become active inside your body. Regular water purifying technologies consume a lot of power, but a team of Stanford researchers have developed a new low-cost, high-speed filter that works differently than other purifiers.

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Nano-structured Teabags Make Water Purifying Simpler Than Ever

Ovidiu Sandru — Wed, 18 Aug 2010 17:44:43 +0000

South Africa's Stellenbosch University scientists led by Eugene Cloete invented a kind of teabag which, instead of filtering tea impurities, purifies water at the lowest price and energy consumption possible.

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High Pressure Desalination Process Used At Large Scale by Indian Company

Mike Sandru — Tue, 03 Aug 2010 20:23:25 +0000

IVRCL, a company from India, has finished a high-tech desalination plant in the city of Madras. According to officials, this plant is the biggest in South Asia, using seawater to generate 100 million liters of potable water a day for the city's seven million residents. They also said it will supply 1,000 liters of drinking water for just over $1.

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Wetox Process Invented in New Zealand Breaks Waste Sludge Into Usable Chemicals and Energy

Ovidiu Sandru — Thu, 10 Jun 2010 09:21:58 +0000

Cleaning out the dirt that we leave behind is an important task for the well-being of a society. One of the biggest pollution sources is currently the disposal of organic materials coming from animal farms, wineries and dairy factories. Wetox is a clean technology project announced by Viclink, who commercializes products based on Victoria University of Wellington's (New Zealand) theoretical works.

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Prickly Pear Cactus Mucilage Removes Bacteria and Dirt from Water, Acting as Purifier

Ovidiu Sandru — Thu, 29 Apr 2010 14:35:49 +0000

Norma Alcantar and her colleagues extracted the cactus's mucilage - the thick gum that the plant uses to store water, and mixed it with water to which they had added dirt (sediments and bacteria - Bacillus cereus).

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Portable Desalination System Designed by MIT Could Save Lives

Ovidiu Sandru — Fri, 26 Mar 2010 13:11:09 +0000

Water desalination is very important in areas where earthquakes, tsunamis or other natural catastrophes occurred. Usually, these areas are located near the sea or the ocean, and desalinizing the water could definitely save lives.

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SunPower Helps Sewage Treatment Plants Get Self Sustaining

Cristi — Mon, 11 Jan 2010 20:18:55 +0000

Wastewater treatment plants are usually packed with industrial-sized aerators, pumps and other machines that usually use a lot of electricity from the grid. But SunPower Corp. developed a solar power system for the West Riverside Wastewater Treatment Plant in Corona, California that is able to generate one-megawatt of energy

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New Microbubble Production Making Biofuels and Wastewater Treatment More Efficient

Ovidiu Sandru — Mon, 11 Jan 2010 11:29:37 +0000

I didn't really actively realize that current biofuel production technologies imply the usage of fossil fuels at certain moments of the production process. This fact reduces the biofuels' credibility as a cleaner source of energy and increases their carbon footprint.

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Hydrology Student Invents Solar Powered Mass Desalination System

Ovidiu Sandru — Fri, 08 Jan 2010 19:51:54 +0000

Worldwide terminus lakes could benefit from a new system to desalinate water, using a low-cost solar pond and patented membrane distillation system powered by renewable energy.

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World's First Osmotic Power Plant Goes Online in Norway

Mike Sandru — Wed, 25 Nov 2009 17:07:51 +0000

The process, called osmotic power, is a harvesting the energy that appears when salt water and fresh water meet through an osmotic filter. For the moment, the project is small-scale but could prove the great potential of osmotic energy.

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Saltworks' New Desalination Technology Uses 70% Less Energy

Cristi — Mon, 16 Nov 2009 20:38:23 +0000

Saltworks Technologies reported that they can produce 1 cubic meter of fresh water using just 1kWh compared to 3.7kWh per cubic meter achievable using reverse osmosis.

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SEADOG Uses Waves' Own Power to Desalinate Sea Water

Cristi — Wed, 21 Oct 2009 20:05:40 +0000

A company called Renew Blue, Inc. will use wave power to run a desalination plant in Freeport, Texas. The resulted water will be finally put into corn-based biodegradable plastic bottles. The SEADOG power system is made from a buoy which puts in motion a piston mechanism that rotates a water wheel to generate electricity.

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Redbird Solar Water Purification System Can Process 14,400 gallons/day

Mike Sandru — Sat, 10 Oct 2009 20:04:21 +0000

The company Chemviron Midwest has developed the world's first solar-powered water purification system. The 25-feet long and 15-feet high water purification system, known as Redbird, can be completely enclosed in a shipping container, being easily transported in various parts of the world.

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Potable Water Tank Mixer Eliminates Stagnation Utilizing Solar Power

Mike Sandru — Fri, 24 Jul 2009 16:26:01 +0000

The company SolarBee has created a potable-water tank mixer, designed to eliminate thermal stratification and stagnation in potable water.

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