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使用生物基CaCO3功能化沉积物同时通过吸附和沉积在水源水库中去除藻类和COD

Yifan Du¹, Jinbo Zhao¹, Qingping Wang²

¹School of Civil Engineering, Chang'an University, Xi'an 710064, China; Key Laboratory of Environmental Aguatic Chemistry, State Key Laboratory of Regional Environment and Sustainability, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.

|September 20, 2025

概括

这项研究引入了一种新的生物-CaCO3沉积物来控制水库藻类并减少化学氧气需求 (COD). 这种环保材料有效地去除叶绿素a和污染物,为水资源整治提供了稳定的解决方案.

科学领域:

环境科学环境科学
材料科学材料科学材料科学
生物技术是生物技术.

背景情况:

对于藻类控制而言,现场度增强可以增加化学氧气需求 (COD),因为有机去除不完整.
开发有效的方法来同时控制水库中的藻类和COD对于水质管理至关重要.

研究的目的:

设计一种生物合成的生物-CaCO3-修饰沉积物,用于同时抑制藻类和减少COD.
研究材料的性能,吸附机制和控制关键水质参数的性能.

主要方法:

使用菌诱导的碳酸盐沉合成的生物-CaCO3沉积物.
使用SEM,XRD,FTIR和BET进行材料特性表征.
使用Microcystis aeruginosa,Chlorella和Limnothrix进行藻类吸附研究,使用Langmuir和伪二阶模型进行分析.
使用XDLVO理论和DFT分析对相互作用力的评估.
优化处理条件,评估污染物去除效率和泄漏.

主要成果:

生物-CaCO3材料形成了15-30纳米的核心外集群,具有丰富的功能组和中介孔.
吸附后的Langmuir单层结合和伪二阶动力学,表明强烈的EPS-Bio-CaCO3相互作用.
在最佳条件下,可实现93.8%的Chl-a去除,88.6%的COD减少,87.5%的度控制与最小的Ca2+出.

结论:

生物CaCO3改性沉积物为水生环境中同时控制藻类和COD提供了稳定和环保的策略.
该材料的有效性归因于集成的化学吸收,界面粘附和孔隙封闭机制.
这种方法为现场沉积物整治和水库中双重污染物控制提供了一个有希望的解决方案.

关键词:

细胞外聚合物质 (EPS) 是一种微纳米CaCO(3) 是一个微纳米CaCO.响应表面的响应表面是一个响应表面.沉积物修饰是一种沉积物修饰.XDLVO 版权所有

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