文献类型：期刊文献

英文题名：Microbial mechanisms enhancing humification and nitrogen retention during co-composting of black soldier fly frass and pig manure

作者：Li, Xunan[1,2];Zhou, Yanbo[3,4];Su, Yinglong[1,4];Wu, Dong[1,4];Zhan, Min[1,4];Xie, Bing[1,4]

机构：[1]East China Normal Univ, Shanghai Engn Res Ctr Biotransformat Organ Solid W, Sch Ecol & Environm Sci, Shanghai Key Lab Urban Ecol Proc & Ecorestorat, Shanghai 200241, Peoples R China;[2]North China Univ Water Resources & Elect Power, Sch Ecol & Environm, Zhengzhou 450045, Peoples R China;[3]East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asses, Shanghai 200237, Peoples R China;[4]Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China

年份：2025

卷号：208

外文期刊名：WASTE MANAGEMENT

收录：;EI(收录号：20254519471288);WOS:【SCI-EXPANDED(收录号:WOS:001583414500001)】；

基金：This work was financially supported by the National Natural Science Foundation of China (22276059) and the International Scientific and Techno-logical Cooperation Program of Science and Technology Com-mission of Shanghai Municipality, China (24230712100) .

语种：英文

外文关键词：Black soldier fly larvae; Pig manure; Co-composting; Humification; Microbial succession

摘要：The bioconversion of food waste by black soldier fly larvae (BSFL) has garnered increased attention in recent years. However, nutrient-rich BSFL frass produced after larval harvesting does not meet the standard for organic fertilizer and requires secondary composting. This study investigated the co-composting of BSFL frass with different types of pig manure, including fresh (FR) and stored for 10 days (FM), to explore the microbial mechanisms enhancing humification and nitrogen retention using rice bran as a bulking agent. Results indicated FM achieved the longest thermophilic phase, exceeding 50 degrees C for 15 days and 55 degrees C for 8 days, along with the highest germination index (64.41 +/- 2.13 %) and nitrogen content (4.09 +/- 0.21 %). Ultraviolet-visible (UV-Vis) spectroscopy results demonstrated that FM facilitated the most effective humification process, with threedimensional fluorescence spectrometer (3D-EEM) analyses confirming a greater humic acid formation. Microbial profiling revealed a predominant bacterial succession, with key populations including Bacillus spp., Micrococcales, Saccharomonospora, and uncultured Sphingobacteriaceae. Functional predictions based on PICRUSt2 analysis indicated nitrogen assimilation and fixation were enhanced, while denitrification was suppressed, thereby minimizing nitrogen loss. This study provides a viable strategy for integrating insect-based bioconversion with livestock manure composting to achieve high-value organic waste recycling.