Effects of phosphorus-containing additives on carbon transformation during pig manure composting

文献类型： 外文期刊

第一作者： Li, Shuyan

作者： Li, Shuyan;Gu, Xuhan;Li, Hui;Li, Minghan;Liu, Zhijun;Xu, Zhicheng;Li, Jijin;Luo, Yiming;Wang, Meiling;Wan, Xia

作者机构：

关键词： Pig manure composting; Carbon transformation; Phosphorus-containing additives; Humification; Gaseous emission

期刊名称：ENVIRONMENTAL TECHNOLOGY & INNOVATION （ 影响因子：7.1； 五年影响因子：6.9 ）

ISSN： 2352-1864

年卷期： 2023 年 32 卷

页码：

收录情况： SCI

摘要： The effects of two typical phosphorus-containing additives (i.e. phosphogypsum and superphosphate) on carbon transformation during pig manure composting were investi-gated. Three addition strategies, including 10% phosphogypsum as well as 2.5% and 10% superphosphate (based on dry mass) were designed with same dosage or phosphorus content. Results showed that all strategies could alter organic biotransformation to reduce carbon loss during composting. Adding 10% superphosphate and phosphogypsum could restrain microbial activities to retard organic biodegradation, which thus reduced carbon dioxide and methane emission as well as humic acid (HA) formation. Compared to these strategies with high dosage additives, addition of 2.5% superphosphate could promote the conversion of unstable fulvic acid (FA) to stable HA with high aromaticity for humification. In addition, 2.5% superphosphate was more favorable to reduce CH4 emission given its low dosage to maintain suitable thermophilic period. Thus, addition of 2.5% superphosphate was recommended to accelerate humification and reduce carbon loss during pig manure composting in practice. & COPY; 2023 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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