gold Archives – The Green Optimistic green tech news, since 2008 Mon, 09 Sep 2013 14:12:35 +0000 en-US hourly 1 https://wordpress.org/?v=7.0 2667534 Fairtrade Gold From Mines In Africa Saves Millions of Lives and Reduces Mercury Pollution https://www.greenoptimistic.com/fairtrade-gold-mines-africa-saves-millions-lives-20130909/ https://www.greenoptimistic.com/fairtrade-gold-mines-africa-saves-millions-lives-20130909/#respond Mon, 09 Sep 2013 14:12:19 +0000 https://www.greenoptimistic.com/?p=41445 Gold mining in many regions of Africa is one of the leading industries on the continent, with nearly 99% of all gold output being exported to Europe, Asia and America . Finding gold, however, is associated with shocking work conditions, extreme mercury pollution and horrific exploitation of child labor. But the Fairtrade International says this […]

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]]> https://www.greenoptimistic.com/fairtrade-gold-mines-africa-saves-millions-lives-20130909/feed/ 0 41445 Phosphine-Functionalized Resins Capturing Gold From Wastewater https://www.greenoptimistic.com/gold-capture-wastewater-20121031/ https://www.greenoptimistic.com/gold-capture-wastewater-20121031/#respond Wed, 31 Oct 2012 21:16:28 +0000 https://www.greenoptimistic.com/?p=27446 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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