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结合改造的本托尼特和过氧化,以增强从湖泊沉积物中去除

Xiang Chen¹, Ling Liu², Yan Wang³

¹Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing, 210042, China; College of Hydrology and Water Resources, Hohai University, Nanjing, 210098, China.

Journal of environmental management

|January 26, 2024

概括

兰改性土 (LMB) 和过氧化 (CP) 组合有效地去除沉积物 (P) 和溶解有机物 (DOM). 这种新的处理方法增强了铁 (Fe) 的氧化,有助于P吸附,有利于湖泊的恢复.

科学领域:

环境科学环境科学
水的化学水的化学
生态生态学生态生态学

背景情况:

沉积物 (P) 和溶解的有机物 (DOM) 有助于优化.
已知P吸附剂是兰改性土 (LMB) 和过氧化 (CP).
沉积物的内部P负荷是湖泊恢复的一个主要挑战.

研究的目的:

评估LMB和CP对沉积物P,DOM和铁 (Fe) 度的综合影响.
评估LMB + CP对沉积物微生物群落的影响.
为了确定LMB + CP作为一种新的湖泊恢复方法的有效性.

主要方法:

进行了90天的化实验.
沉积物样本用LMB,CP或组合 (LMB + CP) 进行处理.
测量了沉积物P分数,DOM和可溶性Fe (II) 的度.

主要成果:

LMB + CP显著减少了可溶性反应 (SRP) 和DOM分别减少了40.67%和28.95%.
上层沉积层中的HCl-P增加了13.28%与LMB + CP.
LMB + CP 处理促进了铁的氧化,增加了沉积物的微生物丰富性.

结论:

结合LMB和CP有效地去除沉积物P和DOM,增强内部P的去除.
铁氧化和DOM通过LMB去除 + CP受益 P通过LMB吸附.
LMB + CP是一种有前途的新方法,用于处理具有高内部P和DOM负载的湖泊.

关键词:

过氧化是一种过氧化.溶解的有机物质是有机物质.铁铁铁是什么意思铁铁铁用兰修饰的本托尼特.是一种的物质.

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相关概念视频

The Phosphorus Cycle

The Phosphorus Cycle

Unlike carbon, water, and nitrogen, phosphorus is not present in the atmosphere as a gas. Instead, most phosphorus in the ecosystem exists as compounds, such as phosphate ions (PO43-), found in soil, water, sediment and rocks. Phosphorus is often a limiting nutrient (i.e., in short supply). Consequently, phosphorus is added to most agricultural fertilizers, which can cause environmental problems related to runoff in aquatic ecosystems.