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Vietnam is one of the 10 biggest producers of cassava in the world. Its manufacture involves generating large quantities of wastewater. The starch in the latter ferments and creates methane - a highly toxic climate killer. The Daklak Tapioca Factory in central Vietnam is now collecting the gas as an energy source and using it to operate the facility.Lesen Sie mehr unter: http://www.dw.de/program/global-3000/s-11487-9798