Research Article Open Access

The Effect of Bacteria on the Formation and Polymerization of Humic Substance Precursors During Different Composting Periods

Abstract

The aim of this work was to detect the formation and polymerization of humic substance (HS) precursors and put forward a staging regulating method to improve HS formation during different materials composting. Five materials composting of lawn waste, cabbage waste, corn straw, garden waste and chicken manure were conducted in this study. During composting, the HS precursors, including the polyphenols, carboxyl, amino acids, and polysaccharides and reducing sugars, conducted varied formation rules in the heating phase, thermophilic phase, cooling phase and maturity phase of composting. The dynamic of precursor’s concentration and bacteria communities have been divided into five and three groups, respectively, by the non-metric multidimensional analysis, during different materials composting. Given that, a staging regulating method was proposed to promote HS amount during different materials composting.

Junqiu Wu, Yingying Ma, Haishi Qi, Xinyu Zhao, Xu Zhang, Xinyu Xie, Yingqiu Du, Yue Zhao and Zimin Wei

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