文献类型： 外文期刊

作者： Ma, Xuzhe ¹ ; Li, Songling ² ; Pan, Ruokun ¹ ; Wang, Ziqi ¹ ; Li, Jingyu ³ ; Zhang, Xiu ³ ; Azeem, Muhammad ⁴ ; Yao, Yiqing ⁶ ; Xu, Zhongyang ² ; Pan, Junting ⁷ ; Zhang, Zengqiang ¹ ; Li, Ronghua ¹ ;

作者机构： 1.Northwest A&F Univ, Coll Nat Resources & Environm, Yangling 712100, Peoples R China

2.Qinghai Univ, Qinghai Acad Agr & Forestry Sci, Qinghai 810016, Peoples R China

3.North Minzu Univ, Ningxia Key Lab Dev & Applicat Microbial Resources, Yinchuan 750021, Peoples R China

4.Chinese Acad Sci, Inst Urban Environm, Key Lab Urban Environm & Hlth, Ningbo Observat & Res Stn, Xiamen 361021, Peoples R China

5.Pir Mehr Ali Shah Arid Agr Univ Rawalpindi, Inst Soil & Environm Sci, Rawalpindi 46300, Punjab, Pakistan

6.Northwest A&F Univ, Coll Mech & Elect Engn, Western Expt Stn Rural Renewable Energy Dev & Util, Minist Agr & Rural Areas, Yangling 712100, Peoples R China

7.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Key Lab Nonpoint Source Pollut, Minist Agr & Rural Affairs, Beijing 100081, Peoples R China

关键词： Biosolids; Aerobic biostabilization; Biochar; Volatile fatty acids mitigation; Carbon transformation; Mechanism

期刊名称：JOURNAL OF CLEANER PRODUCTION （ 影响因子：11.1； 五年影响因子：11.0 ）

ISSN： 0959-6526

年卷期： 2023 年 390 卷

页码：

收录情况： SCI

摘要： In order to declare the effect and the underlying mechanism of biochar amendment on volatile fatty acid (VFA) emission during aerobic biostabilization of biosolids, different types of biochar (i.e., wheat straw biochar [WHB], sawdust biochar [SDB], and food waste digestate biochar [FRB]; 5% in dry weight) on carbon transformation and VFA emissions during 45-day aerobic biostabilization of biosolids were investigated. The results showed that biochar amendment improved thermophilic phase evolution and product dephytotoxification. During the 45-day period, in comparison to control, biochar addition promoted CH4 reduction by 44.46%-76.90% and enhanced the content of total organic carbon reduction by 20.60%-56.80%. In addition, biochar addition lowered the emissions of acetic, propanoic, isobutyric, butyric, isovaleric, and valeric acids by respectively 23.43%-41.21%, 23.10%-43.92%, 42.62%-56.11%, 26.70%-58.20%, 10.56%-58.27%, and 33.74%-49.45% compared with control values. Moreover, biochar amendment facilitated organic matter humification during biosolid biocon-version as well. Among the applied types of biochar, SDB, with a higher surface area, was more efficient in organic matter degradation and VFA emission mitigation than WHB and FRB. In particular, biochar amendment increased the abundance and diversity of aerobic bacterial communities such as Acinetobacter, Desemzia, Geor-genia, Nonomuraea, Psycharobacter, Planococcus, Paenisporosarcina, Physchrobacillus, Staphylococcus, Thermobifida, and Thermopolyspora, while inhibiting the reproduction of anaerobic bacteria including Bacillus, Bacteroides, Corynebacterium, Ruminofilibacter, and Terrisporobacter during biosolid stabilization, thus improving biosolid maturity and stabilization and reducing VFA emissions. These findings offer a novel method with appropriate recommendations for the use and the selection of biochar in increasing the efficiency of biosolid aerobic biostabilization.