Housefly larva bioconversion enhances heavy metal stabilization and antibiotic degradation during chicken manure composting
文献类型： 外文期刊
作者： Lu, Nanyang 1 ; Zhao, Tinglei 1 ; Hong, Chunlai 2 ; Yao, Yanlai 2 ; Zhu, Weijing 2 ; Hong, Leidong 2 ; Zhang, Tao 2 ; Xu, Hanjing 2 ; Wang, Kewei 2 ; Ding, Chengrong 1 ; Zhou, Ying 1 ; Zhu, Fengxiang 2 ;
作者机构： 1.Zhejiang Univ Technol, Coll Chem Engn, Hangzhou 310014, Peoples R China
2.Zhejiang Acad Agr Sci, Inst Environm Resource Soil & Fertilizer, Hangzhou 310021, Peoples R China
关键词： Maggot protein; Humic substances; Aromatic structures; Tetracyclines; Nutrient retention
期刊名称：SCIENTIFIC REPORTS （ 影响因子：3.9； 五年影响因子：4.3 ）
ISSN： 2045-2322
年卷期： 2025 年 15 卷 1 期
页码：
收录情况： SCI
摘要： This study assessed the integration of housefly larva bioconversion with aerobic composting for chicken manure (MC) over a 45-day period (4 days of larval bioconversion + 41 days of aerobic composting) and compared it with direct composting (CK1) and sawdust-amended composting (CK2). Larval activity enhanced moisture reduction and substrate porosity, yielding 6.08% (w/w) maggot protein and reducing nutrient losses of C, N, P, and K by 13.45%, 35.08%, 62.15%, and 70.89%, respectively, relative to CK2. MC treatment accelerated humification, as evidenced by increased aromatic and humic acid content, which immobilized heavy metals, Particularly Zn and Cd via HA-metal complexation. Multivariate analyses (redundancy and CART) identified moisture (< 63 - 74%), composting duration, organic matter, and K+ release as principal drivers for heavy metal passivation. In the three treatment, degradation of tetracycline antibiotics followed the sequence OTC > CTC > DOX with MC reducing the half-life of CTC to 2.57 days through thermophilic degradation coupled with HA- and K+-mediated adsorption and chelation; quinolone antibiotics remained largely recalcitrant. These results demonstrate that MC composting enhances nutrient retention, heavy metal stabilization, and tetracycline removal, thereby improving the agronomic value and environmental safety of chicken manure-derived biofertilizer.
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