Transcription of Anaerobic Digestion Basics - uidaho.edu
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Anaerobic Digestion Basics - uidaho.edu
Introduction Dairy, potatoes, and sugar beets all importantagricultural commodities in Idaho also generate ahuge amount of wastes. Two big waste-relatedchallenges facing the dairy and food processingindustries are emissions of odors and gases andmanure management. Gas emissions includegreenhouse gases; ammonia (NH3), a colorless gas witha pungent smell; and hydrogen sulfide (H2S), acolorless gas with the foul odor of rotten eggs. Rising energy prices, more restrictive regulatoryrequirements, and increasing concern over greenhousegas emissions are causing many people in Idaho s dairyand food-processing industries to consider anaerobicdigestion (AD) of wastes from their Digestion technology is being viewed as away to address environmental concerns, generaterenewable energy, cut bedding-material costs, reducepathogens and weed seeds associated with manure,improve manure nutrient availability to plants, andsometimes generate new revenues.
continuous stirred tank reactor at 95°F, methane production increased from 230 to 450 ml g-1 VS when the fruit/vegetable waste increased from 20% to 50%. Another co-AD of cow manure and organic fractions of municipal solid waste at 131°F with HRTs of 14 to 18 days indicated that adding such waste to the manure
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