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Optimization of the Production of Biogas in Anaerobic Digestion by the Addition of hydrolytic microorganisms

Journal of Environmental Science and Engineering(A) 2022年第1期11卷 8-12页

作者： María Montes Melissa Cervantes Alejandra Vásquez Víctor Aguilar Pedro García Isabel Del Castillo Department of Environmental Engineering Institute for EngineeringUniversity of VeracruzBoca del RioVer.94294Mexico Department Chemical Engineering Faculty of Chemical SciencesUniversity of VeracruzBoca del RioVer.94294Mexico Department of Administration Open Teaching SystemUniversity of VeracruzBoca del RioVer.94294Mexico Department Sanitary Engineering E.T.S.I.Civil EngineeringPolytechnic University of MadridMadrid28040Spain

It is well known that fossil fuels are one of the major pollutants that contribute to climate change and there is a need to develop alternatives to their *** option is the use of a renewable fuel such as biogas obtained from the breaking down of organic matter in the anaerobic digestion *** biogas is cleaned up to a certain quality,it can substitute the use of natural ***,this slow process requires optimization to increase the amount of *** are chemical,physical and biological treatments for organic matter to increase the amount and quality of *** the former research,a biological treatment was tested by adding a selection of microorganisms that showed hydrolytic activity to an anaerobic digester for its ***,a selection of microorganisms with the ability to grow in fresh sewage sludge as only nutrient was ***,the lipolytic,cellulolytic and PA(Proteolytic Activity)of microorganisms was tested using selective growth ***,10 samples with the greatest hydrolytic activity were used to evaluate their effects in the increasing of biogas production in the anaerobic *** results showed that 83%of the microorganisms with the ability to grow in sewage sludge were proteolytic,while the percentage of lipolytic and cellulolytic microorganisms was ***,it was found that proteolytic microorganisms are the ones that increase biogas yield in a maximum of 80%with a COD(Chemical Oxygen Demand)reduction of 58%.

关键词： hydrolytic microorganisms biogas anaerobic digestion

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