Digestate is often used as high-quality liquid fertilizer.Īnaerobic digesters operate in one of three temperature regimes: thermophylic (120–140☏), mesophylic (95–105☏), and psychrophylic (60–75☏). In addition to biogas, digesters produce a condensate liquid (referred to as “digestate” consisting of water, minerals, and the bulk of the residual carbon from the original organic material. Lastly, anaerobic methanogenic archaea bacteria convert these residual products into methane and carbon dioxide (biogas). These are, in turn, converted into acetic acid. These consume the biomass and convert it into carbon dioxide, hydrogen, ammonia, and miscellaneous organic acids. First-stage bacteria break down carbohydrates during bacterial hydrolysis to produce soluble materials such as sugars and amino acids that can be consumed by the next set of microorganisms, the acidogenic bacteria. Several types of bacteria are involved in the anaerobic digestion process, and they, in effect, take turns during the process with the first types preparing the way for successor microorganisms. 6 Tips for Excellence in Landfill Operations. Download it now!Īnaerobic digestion is a naturally occurring process that can be harnessed to transform organic waste into a mix of methane gas and carbon dioxide (usually referred to as “biogas”). We’ve created a handy infographic featuring 6 tips to improve landfill management and achieve excellence in operations.

Managing municipal solid waste is more than landfilling: publicity, education, engineering, long-term planning, and landfill gas waste-to-energy are specialties needed in today’s complex environment.

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