生物炭对污水污泥堆肥过程中微生物活性和群落结构的影响。
Effects of biochar on the microbial activity and community structure during sewage sludge composting.
机构信息
School of Materials and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, China; Henan Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration, Zhengzhou University of Light Industry, Zhengzhou, China.
School of Materials and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou, China.
出版信息
Bioresour Technol. 2019 Jan;272:171-179. doi: 10.1016/j.biortech.2018.10.020. Epub 2018 Oct 9.
To explore the contributions of functional bacterial community in composting, we performed medium-scale composting of sewage sludge and sawdust mixtures amended with rice straw biochar at different dosages (5, 10, and 20% of fresh mixture weight) in 400 L bioreactor systems. The dynamics of enzyme activity and bacterial community composition were monitored during the composting. The addition of biochar above 10% inhibited the activity of protease but promoted the activities of cellulase and peroxidase, which also increased the fluctuation of bacterial diversity during the composting. The relationship between the activity of most enzymes and bacterial community was strengthened by the addition of biochar (10% and 20%), which further enhanced the contributions of the functional bacterial communities to composting. Therefore, the study provides evidence for the promoting effects of biochar on the functions of bacterial community.
为了探索功能细菌群落在堆肥中的贡献，我们在 400L 生物反应器系统中进行了不同剂量（新鲜混合物重量的 5%、10%和 20%）的稻草生物炭添加的污水污泥和木屑混合物的中规模堆肥。在堆肥过程中监测了酶活性和细菌群落组成的动态。添加超过 10%的生物炭抑制了蛋白酶的活性，但促进了纤维素酶和过氧化物酶的活性，这也增加了堆肥过程中细菌多样性的波动。添加生物炭（10%和 20%）加强了大多数酶与细菌群落之间的关系，从而进一步增强了功能细菌群落对堆肥的贡献。因此，该研究为生物炭对细菌群落功能的促进作用提供了证据。
Zotero 插件