DURING the coronavirus lockdown around the world, restaurants and bars had huge stocks of food and alcohol go to waste. However, in Australia, stale beer is producing renewable energy in the form of biogas. This stale beer is now being dubbed “Energy Ale” and is producing enough energy to power 1,200 homes a month. The energy conversion is taking place at Glenelg Wastewater Treatment Plant. Under normal circumstances, the plant will generate 80 percent of its energy from sewage sludge. However, by adding 150,000 liters of stale beer into the mix, the plant was able to significantly increase its biogas generation. In May, they created 355,200 cubic meters of biogas. (SD-Agencies) (SD-Agencies) |