School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China.
School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China.
Bioresour Technol. 2020 Dec;318:124265. doi: 10.1016/j.biortech.2020.124265. Epub 2020 Oct 16.
The purpose of this research was to explore the effects of red mud on cellulose degradation and the succession of β-glucosidase microbial community in composting to better enhance the quality of compost. The activity of β-glucosidase in the treatment group with red mud (T) was 0.42-1.07 times higher than that in the control group without red mud (CK) from day 7 to 21 of composting. The final cellulose degradation ratios of the T (84.73%) were 10.02% higher than that of the CK (74.71%). In addition, Proteobacteria, Actinobacteria, Firmicutes, and Ascomycota were the most dominant β-glucosidase-producing microbes, and these microbes were also the phyla causing composting performances differences in the high temperature, cooling, and maturity periods of CK and T. These results indicated that adding red mud can improve β-glucosidase activity and boost the breakdown of cellulose in composting process.
本研究旨在探讨红泥对纤维素降解及堆肥中β-葡萄糖苷酶微生物群落演替的影响，以更好地提高堆肥质量。添加红泥（T）处理组的β-葡萄糖苷酶活性在堆肥第 7 至 21 天比无红泥（CK）对照组高 0.42-1.07 倍。T 组的最终纤维素降解率（84.73%）比 CK 组（74.71%）高 10.02%。此外，变形菌门、放线菌门、厚壁菌门和子囊菌门是最主要的产β-葡萄糖苷酶微生物，这些微生物也是导致 CK 和 T 的高温期、冷却期和腐熟期堆肥性能差异的菌门。这些结果表明，添加红泥可以提高β-葡萄糖苷酶活性，促进堆肥过程中纤维素的分解。
