Xuming Zhang Archives – The Green Optimistic green tech news, since 2008 Tue, 11 Jan 2011 17:25:55 +0000 en-US hourly 1 https://wordpress.org/?v=7.0 2667534 Photocatalysis-Based Water Purifier Uses Sunlight to Break Down Impurities https://www.greenoptimistic.com/photocatalysis-water-purifier-20110111/ https://www.greenoptimistic.com/photocatalysis-water-purifier-20110111/#comments Tue, 11 Jan 2011 17:25:55 +0000 https://www.greenoptimistic.com/?p=16680 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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