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Roles of non-ionic surfactant sucrose ester on the conversion of organic matters and bacterial community structure during composting.
Bioresource Technology ( IF 11.4 ) Pub Date : 2020-03-31 , DOI: 10.1016/j.biortech.2020.123279
Gen Li 1 , Qiuhui Zhu 1 , Zhiwei Jiang 1 , Mingqi Li 1 , Chaofan Ma 1 , Xintian Li 1 , Haibo Liu 2 , Youyan Liu 2 , Qunliang Li 2
Affiliation  

The purpose of this study was to investigate the effect of sucrose ester (SE) addition on the physico-chemical parameters, organic matter (OM) biodegradation and related bacterial communities structure in dairy manure and cassava residuals co-composting. The biodegradation rates of OM, dissolved organic matters (DOM) and lignocellulose in SE (16.34%, 44.11% and 26.73%) group were higher than those in CK (14.71%, 39.11% and 19.90%). In addition, the content of humic substances (HS) (36.34%) in SE was obviously higher than that in CK (17.68%). The relative abundance of bacterial community in SE changed, in which the abundance of Firmicutes and Actinobacteria increased, while the amount of Blastomonas decreased. Redundancy analysis indicated Bacillus and Acinetobacter were positively correlated with the temperature and OM, whereas Azomonas and Luteimonas showed a positive relation with pH. In conclusion, the amendment of SE accelerated the degradation and conversion of organic matters, enhanced the formation of HS and improved the quality of compost.

中文翻译:

非离子表面活性剂蔗糖酯在堆肥过程中对有机物转化和细菌群落结构的作用。

这项研究的目的是调查添加蔗糖酯(SE)对奶牛粪便和木薯残渣共堆肥的理化参数,有机物(OM)生物降解和相关细菌群落结构的影响。SE组的OM,可溶性有机物(DOM)和木质纤维素的生物降解率(16.34%,44.11%和26.73%)高于CK组(14.71%,39.11%和19.90%)。另外,东南部腐殖质(HS)含量(36.34%)明显高于CK(17.68%)。SE中细菌群落的相对丰度发生了变化,其中Firmicutes和放线菌的丰度增加,而Blastomonas的数量减少。冗余分析表明,芽孢杆菌和不动杆菌与温度和OM呈正相关,而天青和天冬氨酸与pH值呈正相关。总之,对SE的修正促进了有机物的降解和转化,促进了HS的形成并提高了堆肥的质量。
更新日期:2020-03-31
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