Optimizing biogas residue composting: Impact of biochar and zeolite co-loaded with lignocellulose-degrading microbial agents on degradation, humification, and microbial ecology

文献类型： 外文期刊

第一作者： Chang, Hong

作者： Chang, Hong;Lin, Ruian;Su, Xiaohong;Xu, Xinrui;Liu, Wei;Zhang, Yilin;Mu, Zeyan;Wang, Xin;Chang, Hong;Lin, Ruian;Su, Xiaohong;Xu, Xinrui;Liu, Wei;Zhang, Yilin;Mu, Zeyan;Wang, Xin;James, Anina;Pan, Junting

作者机构：

关键词： Aerobic composting; Biochar; Zeolite; Composite microbial agents; Bacterial community

期刊名称：JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING （ 影响因子：7.2； 五年影响因子：7.6 ）

ISSN： 2213-2929

年卷期： 2025 年 13 卷 5 期

页码：

收录情况： SCI

摘要： The supplementation of additives is an effective strategy for treating solid waste through aerobic composting. While the use of individual porous materials or microbial agents has been explored, research on a novel synergistic approach-employing biochar and zeolite co-loaded with composite microbial agents to enhance biogas residue composting-remains limited. This study addresses this critical gap by comprehensively investigating the impact of this innovative co-loaded system on physicochemical properties, lignocellulose degradation, humification, bacterial communities, and metabolic functions during aerobic composting, alongside optimizing the inoculation ratio. The findings consistently indicated that the co-loaded composite microbial agents significantly enhanced composting efficiency. An optimal inoculation ratio of 1 % was determined, leading to a 72.61 % increase in the seed germination index. This optimized treatment notably enhanced hemicellulose and cellulose degradation, reaching 35.37 % and 43.52 %, respectively, and the humic acid to fulvic acid (HA/FA) ratio peaked at 1.85. Bacterial community analysis revealed Pseudomonadota, Actinomycetota, Bacteroidota, Chloroflexota, and Bacillota as the most abundant phyla (79 %-91 %), with Actinomycetota and Bacillota associated with lignocellulose degradation. Metabolic function analysis showed high abundances of Carbohydrate metabolism (9.55 %-9.81 %) and Amino acid metabolism (8.08 %-8.45 %), reflecting active organic matter transformation. Correlation analysis further revealed that unclassified_Bacteroidales_genus and Devosia were positively correlated with HA formation. The results provide a scientifically-backed framework for developing efficient and environmentally sustainable composting solutions, advancing resource recovery from biogas residue and aligning with circular economy principles for organic waste management.

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