Research Progress on Effects of Carbonaceous Materials on Anaerobic Digestion of Organic Wastes and Underlying Mechanisms

Abstract:

Anaerobic digestion is one of the most important strategies for organic wastes disposal. Firstly， the potential impacts of carbonaceous materials on the anaerobic digestion of organic wastes for volatile fatty acids and biogas production as well as the main influencing factors were demonstrated. Then， the main functional mechanisms were revealed from the perspectives of microbial community structure and abundance， microbial activities improvement （i.e. metabolic enzymes and the abundance of genes）， electron transfer acceleration among microorganisms， pollutants toxicity reduction （i.e. ammonia and organic acids）， and the synergistic effects with other substances （i.e. iron）. Finally， the potentiality and necessity of utilizing carbonaceous materials for the built-up of high-efficient and economic combined processes for anaerobic digestion were prospected.