Biotechnology Bulletin ›› 2022, Vol. 38 ›› Issue (5): 29-35.doi: 10.13560/j.cnki.biotech.bull.1985.2022-0135

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Compost Humification:An Overview of Abiotic and Biological Regulatory Mechanisms

XIE Xin-yu(), SHI Ming-zi, QI Hai-shi, WU Di, ZHANG Xu, ZHANG Chun-hao, WU Zhan-hai, WEI Zi-min()   

  1. Collge of Life Sciences,Northeast Agricultural University,Harbin 150030
  • Received:2022-01-28 Online:2022-05-26 Published:2022-06-10
  • Contact: WEI Zi-min E-mail:xiexinyu@neau.edu.cn;weizimin@neau.edu.cn

Abstract:

Composting technology is one of the most effective organic solid waste treatment and disposal and resource utilization,involving many complex non-biological and biological reactions. In this paper,the formation and regulation mechanisms of the humification process are described at the non-biological and biological levels,respectively. The non-biological humic acid synthesis mechanisms include the lignin-protein theory,polyphenol self-condensation,the polyphenol-protein pathway,and the Maillard reaction. Biological pathways include the fixation of carbon fractions,the biotransformation of lignocellulose,denitrification,and other responses to the composting humification process. The aim is to provide a more comprehensive technical reference and overview of the current status of humus synthesis in the compost humification process.

Key words: compost humification, non-biological pathway, biological pathway, humus synthesis