文档介绍：Anaerobic Co-digestion of Biomass for Methane Production: Recent Research
Achievements
Wei Wu
ABSTRACT
Anaerobic digestion (AD) is a process by which anisms break down biodegradable
material in the absence of oxygen. Anaerobic digestion can be used to treat anic
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, co-
digestion 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 anic matter formed by photosynthetic capture of solar energy
and stored as chemical energy (Gunaseelan, 1997), which includes agricultural crops and
wastes, animal wa