P2269@com.qz.se ("ENG-LEONG FOO ", MIRCEN-STOCKHOLM) (10/10/89)
Revista Globo Rural, a Brazilian institute, has recently developed a biodigester based on the Indian model. Designed by the Technical Assistance and Rural Extension Agency, the biodigester has a movable metal top which rises along guide tracks as the digester fills up with gas. The cover also functions as a gas meter and exercises pressure on stored gas. A mixture of manure, plant waste and water is used as the feed material. The digester has a 1,403 working capacity and produces 1,203 m3 of methane gas daily. 500 kg of CO2 which is sold for use in fire extinguishers) and 3 tons of biofertilizer are also produced (<comment: per year ? >) More information available from: Revista Globo Rural Rua Frei Caneca 1140/52 01207 Sao Paulo SP Brazil