Mechanism and regulation method of humic acid formation in composting-a review
CHANG Yuan1,2, LI Ruo-qi1,2, LI Jun1,2, ZHAN Ya-bin3, WEI Yu-quan1,2, XU Ting1,2, LI Ji1,2
1. College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China; 2. Organic Recycling Research Institute (Suzhou) of China Agricultural University, Suzhou 215100, China; 3. Institute of Plant Protection and Soil Fertilizer, Hubei Academy of Agricultural Sciences, Wuhan 430064, China
Abstract:The aim of this study was to review the mechanism of humic acid formation and the regulation method for improving the humification degree by process parameter optimization, the exogenous additives, and so on, in composting. The mechanisms of various regulation methods for accelerating humic acid formation process were also discussed, which provided theoretical basis for the development of fast composting technologies. Various regulatory methods may be interacted in applications due to the complex dynamic physiochemical environment factors in composting. Therefore, it is necessary to establish an integrated relationship among more factors related to humic acid formation based on practical compost production process. The future regulating methods will help to improve the quality of composting products.
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