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A Mechanism of Reducing Methane Production During Sewage Sludge Composting by Adding Urea

文献类型：期刊论文

作者Zhang, Ke1,2; Guo, Haopeng2; Liang, Yujing2; Liu, Fuyong1,2; Zheng, Guodi3; Zhang, Jun5; Gao, Aihua4; Liu, Nan1,2; Ma, Chuang1,2
刊名TOXICS
出版日期2024-12-01
卷号12期号:12页码:15
关键词sewage sludge composting urea methane emission bacterial communities
DOI10.3390/toxics12120895
英文摘要The study of the effect of the mechanism of urea addition to sewage sludge and sawdust-composting substrates on methane production is still limited. In the present study, the systematic investigation of the effect of urea addition (0.18, 0.9 and 1.8 kg) on methane production is discussed through the dynamics of physical properties, enzymes, and the microbial community during composting. The results showed that high urea addition (1.8 kg) suppressed methane production, with a lower rate and a shorter duration of warming in the thermophilic phase, but significantly enhanced cellulase activity, urease, and peroxidase, and promoted the degradation of organic carbon, as well as the loss of nitrogen. A high addition of urea stimulated the growth and reproduction of Sinibacillus, Pseudogracilibacillus, Sporosarcina, and Oceanobacillus. The random forest model indicated that the top six independent determinants of CH4 emissions were Methanobacterium, temperature, organic matter (OM), Methanospirillum, and NH4+-N. Furthermore, structural equation modeling displayed that NH4+-N, O2, and pH were the main physicochemical properties affecting CH4 emissions. Methanobacterium, Methanosarcina, and Methanosphaera were the main archaea, and Bacillaceae were the main bacteria affecting CH4 emissions. This study provides new insights and a theoretical basis for optimizing urea addition strategies during composting.
WOS关键词MUNICIPAL SOLID-WASTE ; ANAEROBIC-DIGESTION ; ENZYME-ACTIVITIES ; ORGANIC-CARBON ; PIG MANURE ; C/N RATIO ; EMISSIONS ; STRAW ; COMMUNITY ; TRANSFORMATION
资助项目National Natural Science Foundation of China ; Henan Province Science and Technology Key Project[242102320115] ; Henan Province Science and Technology Key Project[242102320118] ; Key Research Programs of Universities in Henan Province[25A610010] ; Postgraduate Education Reform and Quality Improvement Project of Henan Province[YJS2025XQLH13] ; [42277413]
WOS研究方向Environmental Sciences & Ecology ; Toxicology
语种英语
WOS记录号WOS:001383717000001
出版者MDPI
资助机构National Natural Science Foundation of China ; Henan Province Science and Technology Key Project ; Key Research Programs of Universities in Henan Province ; Postgraduate Education Reform and Quality Improvement Project of Henan Province
源URL[http://ir.igsnrr.ac.cn/handle/311030/212192]  
专题资源利用与环境修复重点实验室_外文论文
通讯作者Ma, Chuang
作者单位1.Collaborat Innovat Ctr Environm Pollut Control & E, Zhengzhou 450000, Peoples R China
2.Zhengzhou Univ Light Ind, Sch Mat & Chem Engn, Zhengzhou 450000, Peoples R China
3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
4.Zhongyuan Ecol Environm Technol Innovat Ctr Henan, Zhengzhou 450000, Peoples R China
5.Guilin Univ Technol, Coll Environm Sci & Engn, Guilin 541004, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Ke,Guo, Haopeng,Liang, Yujing,et al. A Mechanism of Reducing Methane Production During Sewage Sludge Composting by Adding Urea[J]. TOXICS,2024,12(12):15.
APA Zhang, Ke.,Guo, Haopeng.,Liang, Yujing.,Liu, Fuyong.,Zheng, Guodi.,...&Ma, Chuang.(2024).A Mechanism of Reducing Methane Production During Sewage Sludge Composting by Adding Urea.TOXICS,12(12),15.
MLA Zhang, Ke,et al."A Mechanism of Reducing Methane Production During Sewage Sludge Composting by Adding Urea".TOXICS 12.12(2024):15.

入库方式： OAI收割

来源：地理科学与资源研究所

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