基于硫化物的自性脱过程,在高盐度压力下有效去除气:通过谷氨酸补充剂增强值行为和恢复
Kaiyu Zhang1, Qaisar Mahmood2, Jiayi Lv1
1College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, China.
Bioresource technology
|May 17, 2025
概括
基于硫化物的自无化有效地从废水中去除,即使在高盐度下也是如此. 谷氨酸补充剂部分扭转了由离子毒性和氧化应激引起的性能崩.
科学领域:
- 环境微生物学 环境微生物学
- 废水处理技术 废水处理技术
背景情况:
- 基于硫化物的自脱 (SAD) 对于减少废水处理中的碳排放至关重要.
- 废水中的高盐度对SAD系统的效率构成重大挑战.
研究的目的:
- 为了研究SAD系统在高盐度压力下的性能和微生物适应.
- 确定SAD系统崩的机制,并探索缓解策略.
主要方法:
- 在不同盐度水平 (高达5.14%重量) 上研究了SAD系统的性能.
- 分析了微生物社区结构 (占主导地位的类:蛋白质细菌,Campilobacterota) 和生理反应.
- 评估了谷氨酸补充剂对系统恢复的影响.
主要成果:
- 在2.57%的盐度下达到99.82%的去除.
- 系统在5.14%的盐度下崩,这归因于透应激和离子毒性,导致氧化应激和细胞破裂.
- 谷氨酸剂量通过减轻氧化应激和DNA损伤,部分恢复了性能 (60.56 ± 2.64%).
结论:
- SAD系统可以通过耐受性微生物和代谢补偿来适应高盐度,但离子毒性是主要的崩驱动因素.
- 谷氨酸补充剂提供了一种可行的策略,可以在高盐度压力下部分恢复 SAD 性能.
- 这些发现有助于开发可靠的SAD流程,用于高盐度废水处理.
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