Co-fermentation of kitchen waste and excess sludge for organic acid production: a review.

Xuwei Gui; Yifang Luo; Zhenlun LI; Ming Nie; Yuran Yang; Can Zhang; Jing Liu

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Co-fermentation of kitchen waste and excess sludge for organic acid production: a review.

Author: Xuwei GUI ¹ ; Yifang LUO ² ; Zhenlun LI ¹ ; Ming NIE ¹ ; Yuran YANG ¹ ; Can ZHANG ¹ ; Jing LIU ¹
Author Information

1. Chongqing Key Laboratory of Soil Multi-Scale Interfacial Process, College of Resources and Environment, Southwest University, Chongqing 400716, China.
2. Chongqing Key Laboratory of Plant Disease Biology, College of Plant Protection, Southwest University, Chongqing 400716, China.
Publication Type:Review
Keywords: anaerobic co-fermentation; biological metabolic mechanism; fermentation system; produce acid type; volatile fatty acids
MeSH: Anaerobiosis; Bioreactors; Fatty Acids, Volatile; Fermentation; Hydrogen-Ion Concentration; Microbiota; Organic Chemicals; Sewage
From: Chinese Journal of Biotechnology 2021;37(2):448-460
CountryChina
Language:Chinese
Abstract: Resource utilization is an effective way to cope with the rapid increase of kitchen waste and excess sludge, and volatile fatty acids produced by anaerobic fermentation is an important way of recycling organic waste. However, the single substrate limits the efficient production of volatile fatty acids. In recent years, volatile fatty acids produced by anaerobic co-fermentation using different substrates has been widely studied and applied. In this paper, we analyze the characteristics of fermentation to produce acid using kitchen waste and excess sludge alone or mixture. Influences of environmental factors and microbial community structure on the type and yield of volatile fatty acids in the anaerobic fermentation system are discussed in detail. Moreover, we propose future research directions, to provide a reference for recycling kitchen waste and excess sludge.