Bioenergy from Organic Waste

A banana peel contains roughly the same chemical energy as a small AA battery. It sits in the bin for a week, then goes to landfill, where bacteria spend the next several months doing what a microbial fuel cell would do in days – breaking organic molecules apart and releasing the energy stored inside them….

Every week, a typical urban household carries out roughly 3 to 5 kilograms of organic waste. Vegetable peels, coffee grounds, leftover rice, bread that went stale on Tuesday. It travels downstairs, joins a bin on the street, and disappears into the logistics of municipal collection. Somewhere far from the kitchen, usually, it either rots in…