Improvement of Cleaner Composting Production by Manganese Dioxide Nanozyme with Streptomyces rochei ZY-2: From the Humus Formation to Greenhouse Gas Emissions
文献类型： 外文期刊
作者： Liu, Guoxiang 1 ; Lin, Lili 4 ; Zhang, Jing 1 ; Sun, Enhui 1 ; Yong, Cheng 1 ; Chen, Ling 1 ; Huang, Hongying 1 ; Jin, Hongmei 1 ; Qu, Ping 1 ;
作者机构： 1.Inst Agr Resources & Environm, Jiangsu Acad Agr Sci, Jiangsu Collaborat Innovat Ctr Solid Organ Waste R, Key Lab Saline Alkali Soil Improvement & Utilizat, Nanjing 210014, Peoples R China
2.Jiangsu Univ, Fac Agr Engn, Sch Mat Sci & Engn, Zhenjiang 212013, Peoples R China
3.Jiangsu Univ, Fac Agr Engn, Res Sch Polymer Mat, Zhenjiang 212013, Peoples R China
4.Cent Southern China Environm Test & Detect Technol, Wuhan 430071, Peoples R China
关键词：
manganese oxide nanozyme;
期刊名称：CATALYSTS （ 影响因子：4.0； 五年影响因子：4.0 ）
ISSN：
年卷期： 2025 年 15 卷 8 期
页码：
收录情况： SCI
摘要： This study innovatively integrates ball-milled manganese dioxide nanozyme (MDMP) with the Streptomyces rochei ZY-2 inoculant in aerobic rice straw composting. The ZY-2 inoculant efficiently degrades the three major components to generate humus precursors such as phenols and quinones, while the MnO2 nanozyme accelerates precursor polymerization into stable humic acid (HA) via oxygen vacancy-mediated catalytic activity. Simultaneously, this combination regulates microbial communities to reduce greenhouse gas emissions. The results show that the co-treatment group (ZY-2+ MnO2 nanozyme) had an increased HA content by 30.8%, raised HA/FA ratio by 31.6%, and degradation rates of 30.75%, 31.39%, and 16.74% for cellulose, hemicellulose, and lignin, respectively. Additionally, cumulative emissions of CH4, N2O, and NH3 were significantly reduced by 35.22%, 28.23%, and 25.67% compared to the control, attributed to the MnO2 nanozyme's inhibition of methanogens, enhanced nitrogen fixation, and ZY-2-driven microbial metabolic optimization. This study proposes a dual-effect strategy of "enhanced humification-synergistic greenhouse gas mitigation" for agricultural waste recycling, demonstrating significant practical value.
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