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

文献类型： 外文期刊

作者： Li, Shuyan 1 ; Gu, Xuhan 1 ; Li, Hui 1 ; Li, Minghan 1 ; Liu, Zhijun 1 ; Xu, Zhicheng 2 ; Li, Jijin 3 ; Luo, Yiming 4 ; Wang, Meiling 5 ; Wan, Xia 6 ;

作者机构： 1.Shandong Agr Univ, Coll Resources & Environm, Natl Engn Res Ctr Efficient Utilizat Soil & Fertil, Tai An 271018, Peoples R China

2.China Agr Univ, Coll Resources & Environm Sci, Beijing Key Lab Farmland Soil Pollut Prevent & Rem, Beijing 100193, Peoples R China

3.Beijing Acad Agr & Forestry Sci, Inst Plant Nutr & Resources, Beijing 100097, Peoples R China

4.Beijing Gen Stn Anim Husb, Beijing 102200, Peoples R China

5.Shanxian Agr Bur, Shanxian 274399, Peoples R China

6.Gongli Agr Technol Extens Stn, Xintai 271214, Peoples R China

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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