Brewing up batteries

A bio-manufacturing process that uses an organism that can be cultivated in brewery wastewater can be used to make carbon-based materials for energy storage cells, according to scientists at the University of Boulder at Colorado. Give that a brewery uses about seven barrels of water for every barrel of beer produced and cannot simply dump it in the sewerage system untreated, the technique offers an alternative and potentially useful cleanup process that would cover its costs unlike costly filtration with no useful end product.