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Manure enriched with nitrogen derived from high-protein food waste in a large dining facility

文献类型： 外文期刊

作者： Zhang, Mengjie 1 ; Zhang, Xiaoyan 1 ; Lin, Hui 2 ; Zheng, Huabao 3 ; Zhou, Qifa 1 ;

作者机构： 1.Zhejiang Univ, Coll Life Sci, Hangzhou 310058, Peoples R China

2.Zhejiang Acad Agr Sci, State Key Lab Managing Biot & Chem Threats Qual &, Hangzhou 310021, Peoples R China

3.Zhejiang Agr & Forestry Univ, Zhejiang Prov Key Lab Soil Contaminat Bioremediat, Hangzhou 311300, Peoples R China

关键词： Food waste; Large dining room; Manure; N content; Pigeon; Composting

期刊名称：HELIYON （ 影响因子：3.4； 五年影响因子：3.9 ）

ISSN：

年卷期： 2024 年 10 卷 12 期

页码：

收录情况： SCI

摘要： Food waste (FW) from large dining facility has been a pressing environmental challenge in China recently. This study developed an innovative species-specific feeding strategy for producing pigeon meat and excellent manure from FW. Adding FW to the feed of pigeons significantly increased their feed intake and promoted their growth although the pigeons showed a strong aversion to the FW. We produced a "super manure" with exceptionally high nitrogen (N) content (mean = 10.77 % on a dry basis, 8.04-12.57 %, n = 264) by feeding slowly-growing pigeon species (Columba livia vs. and Caoge Huzhou 11) with protein-high commercial feed and FW. A significant negative relationship between the N and carbon (C) contents in the pigeon manure was found, with C depletion higher than N depletion. Furthermore, the N content in the anaerobic composting (AnC) manure was 29.16 % higher than that in the FW. Fourier transform infrared (FT-IR) analysis and stable isotopes 813C and 815N in the manure clearly identified the transformations of nutrients during pigeon feeding and the AnC process. This study opens a path for producing N-high manure using protein-high food waste.

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