Where there's waste, there's energy and materials. The municipality of Lidkoping, Sweden, began construction last year of a biogas and fertilizer plant that will use waste from the local food industry as its main feedstock. The creation of biogas, mostly methane, happens from naturally occurring microorganisms in enclosed tanks. At this facility, which will cost about $12 million, the biogas is cooled and turned into a liquid. Once the plant is completed, operators expect to handle 60,000 metric tons a year of waste and reduce carbon dioxide emissions by more than 14,000 metric tons annually.
Photo by Swedish Biogas International
Caption by Martin LaMonica
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