Scientist Develop Water-Cleaning, Sewage-Powered Fuel Cell
by Max Eddy | 3:35 pm, August 19th
Researchers at the Shanghai Jiao Tong University have developed a fuel cell which turns wastewater into power, generating clean water as a byproduct. As someone who regularly contributes to the wastewater problem via his toilet, I can personally attest to the importance of this technology.
Led by Yanbiao Liu, the researchers sought a way to harvest the potential energy of sewage while also reducing the amount of potential pollutants. Their method uses visible light as a catalyst and a titanium dioxide nanotube-array as an electrode to harvest the energy. When running, the light breaks down the organic compounds in the water, releasing electrons which are collected by the nanotubes.
In addition to organic compounds (like, you know, poop), the team looked to see if their system could separate inorganic compounds such as perfumes and medication that often end up sewage water.
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