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不同化学剂对沉积物成分变化和沉积物微生物群体反应的影响

Hongbin Yin¹, Pan Yang², Ming Kong³

¹State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, China; University of Chinese Academy of Sciences, Nanjing, Nanjing, 211135, China.

Journal of environmental management

|June 11, 2023

概括

聚化 (PAC) 和改 (LMB) 降低沉积物,但在P分量无活化和微生物影响方面有所不同. LMB显示了在湖泊沉积物修复中增加细菌多样性的潜力.

科学领域:

环境化学环境化学
临界技术临界技术
微生物生态学微生物生态学

背景情况:

欧湖遭受内部 (P) 释放的影响,影响水质.
化学剂正在探索沉积物P无活化,但它们对P形式和微生物的影响尚不清楚.
了解P转化和微生物社区的转变对于有效的湖泊恢复至关重要.

研究的目的:

为了研究聚化 (PAC) 和改 (LMB) 对沉积物P分量的影响.
分析PAC和LMB处理后的矿物P形成和有机P成分变化.
评估PAC和LMB对沉积物微生物群落组成的影响.

主要方法:

富含营养的沉积物被修改为各种比例的PAC和LMB.
采用了序列P提取,溶液/固态31P核磁共振 (NMR) 光谱.
在经过处理的沉积物上定期进行微生物社区分析.

主要成果:

PAC减少了与铁结合的P,增加了与结合的P; LMB减少了有机P,增加了与结合的P.
固态31PNMR证实了LMB修改沉积物中的拉布多芬形成.
PAC影响有机P分数 (酸盐);LMB针对的是正酸盐,单和二. PAC显示了短期的负面微生物影响,而LMB增加了细菌的多样性.

结论:

PAC和LMB表现出不同的沉积物P无活化机制.
与PAC相比,LMB对沉积物微生物多样性产生了有利的影响.
这些发现有助于更好地了解PAC和LMB在缩湖内部沉积物P控制中的有效性.

关键词:

化工剂是一种化工剂.沉积物的微生物社区.沉积物中的移动.固体/溶液 (31) P 核磁共振反应

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