RESEARCH PROGRESS ON EXOGENOUS ADDITIVES FOR ANAEROBIC DIGESTION
Introducing exogenous additives into the anaerobic digestion system can improve the performance of the anaerobic digestion system and play a positive role in rapid start-up,reducing inhibition,improving fermentation efficiency,and improving process stability.In recent years,research on anaerobic digestion additives has developed rapidly.This paper reviews the research progress of eight kinds of anaerobic digestion additives(microorganisms,enzymes,trace elements,nanomaterials,adsorbents,conductive materials,ash,and gas).It focuses on discussing their effects and mechanisms in anaerobic digestion.This paper graphically presents the action modes of various additives in the anaerobic system,discusses the fundamental problems that need to be paid attention to in the use of additives,and points out the current research deficiencies and future research directions,aiming at providing essential references for the in-depth research and application of anaerobic digestion additives.
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