These companies want to tackle food waste with microbes
"We need to handle this waste somehow." Meltem Urgun Demirtas For companies interested in anaerobic digestion, however, producing methane is the goal. Because these facilities are sealed up, the mixture of methane and carbon dioxide produced by microbes, called biogas, can be captured and purified into biomethane, which can be used as a replacement for natural gas. Some producers use this biomethane (also called renewable natural gas) or the unpurified biogas on-site, burning it to power their facilities. Others sell…