A tiny village in Indonesia has found a way to turn the waste from tofu
into biogas which saves money and cuts down on pollution.
Waste water from the soybean used in tofu production is collected in tanks and undergoes fermentation. The biogas generated in the treatment facility then flows into pipes connected to two tofu factories and 20 households.
The villagers use the biogas for free which saves on the coast of kerosene. The natural fermentation process also frees the waste water from polluting substances that used to flow into the local river.
Indonesia hopes to expand the simple process across the country where many tofu factories dispose waste water without treatment.