TAILIEUCHUNG - Anaerobic Co-digestion of biomass for methane production: Recent research achievements

Anaerobic digestion is a process by which microorganisms break down biodegradable material in the absence of oxygen. Anaerobic digestion can be used to treat various organic wastes and recover bio-energy in the form of biogas, which consists mainly of CH4 and CO2. A great option for improving yields of anaerobic digestion of solid wastes is the co-digestion of multiple substrates. Numerous studies demonstrate that using co-substrates in anaerobic digestion system improves the biogas yields due to positives synergisms established in the digestion medium and the supply of missing nutrients by the co-substrates. | Anaerobic Co-digestion of Biomass for Methane Production Recent Research Achievements Wei Wu ABSTRACT Anaerobic digestion AD is a process by which microorganisms break down biodegradable material in the absence of oxygen. Anaerobic digestion can be used to treat various organic wastes and recover bio-energy in the form of biogas which consists mainly of CH4 and CO2 A great option for improving yields of anaerobic digestion of solid wastes is the co-digestion of multiple substrates. Numerous studies demonstrate that using co-substrates in anaerobic digestion system improves the biogas yields due to positives synergisms established in the digestion medium and the supply of missing nutrients by the co-substrates. In addition codigestion offers several possible ecological economical advantages. Recent research published during the past three years on this topic is reviewed in the current paper. Special attention is paid to anaerobic co-digestion of animal waste crop and crop residues municipal solid waste MSW as well as municipal sewage sludge. KEYWORDS Anaerobic Co-digestion Biomass Methane Animal Manure INTRODUCTION Biomass Biomass has been defined as organic matter formed by photosynthetic capture of solar energy and stored as chemical energy Gunaseelan 1997 which includes agricultural crops and wastes animal wastes forest and mill residues wood and wood wastes livestock operation residues aquatic plants fast-growing trees and plants and municipal and industrial wastes. Recently oil crisis have brought great interest in the exploration of renewable energy specially bioenergy contained in biomass. The solar energy stored in biomass could be released as biogas a mixture of methane CH4 carbon dioxide CO2 and some trace gases through anaerobic digestion. Anaerobic digestion Anaerobic digestion AD is a process in which microorganisms break down biodegradable material in the absence of oxygen. Anaerobic digestion can be used to treat various organic wastes and recover .

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