增强无氧降解:葡萄糖和酸对微生物特征的关键作用
Qianqi Shao1, Tao Luo1, Chao Zhang1
1Department of Environment Science and Engineering, Fudan University, Shanghai 200438, China; Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3), Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China; Shanghai Technical Service Platform for Pollution Control and Resource Utilization of Organic Wastes, Shanghai 200438, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China.
Bioresource technology
|April 9, 2025
概括
碳水化合物和葡萄糖废水在无氧消化过程中显著加快了的降解,减少了50%以上的处理时间. 这种绿色战略增强了微生物活动,并促进了污染物的有效转化.
科学领域:
- 环境科学与工程环境科学与工程
- 微生物学 微生物学
- 生物技术是生物技术.
背景情况:
- 类废水由于其毒性和回性而构成重大环境挑战.
- 无氧消化是废水处理的关键技术,但其效率可能有限.
研究的目的:
- 研究和容易降解的有机废水 (葡萄糖) 对增强废水无氧消化作用的联合作用.
- 阐明和葡萄糖改善降解过程和微生物社区结构的机制.
主要方法:
- 无氧消化与对照的比较研究,仅用碳水化合物,仅用葡萄糖和联合碳水化合物-葡萄糖治疗.
- 对降解动力学,挥发性脂肪酸概况,微生物群体组成和功能性基因表达的分析.
- 确定关键的微生物参与者和参与降解的代谢途径.
主要成果:
- 和葡萄糖的联合应用将降解时间从90天 (对照组) 减少到30-78天.
- 最佳的葡萄糖度 (1-2 g/L) 增强了降解,而较高的度 (4 g/L) 则导致抑制.
- 酸促进了挥发性脂肪酸的转化,丰富了关键的功能微生物 (例如,Syntrophomonas,Anaerocella,Syntrophus),刺激了基因表达,并增强了直接的物种间电子转移.
结论:
- 碳化合物有效地减轻葡萄糖诱导的酸抑制,并增强性废水的无氧消化.
- 碳化合物和容易降解的有机废水之间的协同作用为处理污染物提供了一个有希望的绿色和高效的战略.
- 这种方法优化了微生物联盟和代谢功能,以改善生物修复.
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