School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China.
School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China.
Bioresour Technol. 2021 Feb;321:124446. doi: 10.1016/j.biortech.2020.124446. Epub 2020 Nov 26.
The purpose of this study was to investigate the effects of anionic and cationic surfactants on the physico-chemical properties, organic matter (OM) degradation, bacterial community structure and metabolic function during composting of dairy manure and sugarcane bagasse. The results showed that the surfactant could optimize the composting conditions to promote the degradation of OM. The most OM degradation and humic substances (HS) synthesis were observed in SAS. Firmicutes and Proteobacteria were more abundant in SAS and CTAC, and Actinobacteria in CK. Phylogenetic Investigation of Communities by Reconstruction of Unobserved States (PICRUSt) showed that SAS and CTAC are more abundant than CK in genes related to metabolism, environmental and genetic information processing. The correlation analysis showed that the dominant bacteria had more significant correlation with environmental factors. In general, the anionic surfactant could better promote the degradation of OM, change the structure of microbial community, and improve the quality of compost.
本研究旨在探讨阴离子和阳离子表面活性剂对奶牛粪便和甘蔗渣堆肥过程中理化性质、有机物（OM）降解、细菌群落结构和代谢功能的影响。结果表明，表面活性剂可以优化堆肥条件，促进 OM 的降解。在 SAS 中观察到 OM 降解和腐殖质（HS）合成最多。SAS 和 CTAC 中厚壁菌门和变形菌门较多，而 CK 中放线菌较多。通过未观察状态重建的群落系统发育分析（PICRUSt）表明，SAS 和 CTAC 中与代谢、环境和遗传信息处理相关的基因比 CK 更为丰富。相关性分析表明，优势细菌与环境因素的相关性更为显著。一般来说，阴离子表面活性剂能更好地促进 OM 的降解，改变微生物群落结构，提高堆肥质量。
