![]() Their second step is a”two-step reverse osmosis” technique that pulls the water out of the “tea water” solution produced in the first filtration round, according to Levine. Meanwhile, the concentrate collected in the tubes produces a thick, sludge-like material that Levine says can be used as an organic fertilizer suitable for land application, composting or recycling to bio-digesters. Levine says the “tea” or “UF (ultra-filtered) permeate” concentrates 95 percent of the phosphorus, all the suspended solids and pathogens into 25 percent of the manure volume.ĭigested Organics recommends using the permeate for irrigation because it won’t clog nozzles and contains no pathogens. The filtration process starts by running raw manure through stainless steel infiltration tubes. Water and salts pass through while solids and pathogens stay in the tubes. Owner of Detroit-based Digested Organics and armed with a PhD in chemical engineering from the University of Michigan, Levine says his two-step filtration solution “transforms manure” into its reusable, planet-friendly parts, including concentrated fertilizers, waste appropriate for biogas digesters and even clean, safe water. ![]() The contest - hosted by The Yield Lab Institute, a global AgTech think tank and offshoot of The Yield Lab, a global accelerator supporting early-stage agricultural companies - was designed to discover, expedite and scale economically and environmentally-superior waste management practices. ![]() To wit, Bobby Levine just won $50,000 for his unique filtration system, beating seven other manure-focused start-ups in a 12-month long, international Manure Challenge. ![]()
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