微塑料的高效,快速和低碳去除机制基于综合凝凝结-自发漂浮过程
Panpan Li1, Jianguo Zhang1, Yongheng Shen2
1School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou 221110, China.
Water research
|June 11, 2024
概括
一种新的凝凝结-自发漂浮过程使用拉米纳林和凝结剂有效地去除微塑料和酸. 与传统技术相比,这种方法提供了更快的处理和更高的去除率.
科学领域:
- 环境科学 环境科学
- 水处理技术 水处理技术
- 材料科学 材料科学 材料科学
背景情况:
- 传统的凝结漂浮用于去除微塑料,其效率不稳定,处理时间长,能耗高.
- 微塑料-酸复合污染物 (MP-HA) 在水处理中构成了复杂的挑战.
研究的目的:
- 开发和评估一种凝凝结-自发漂浮 (GCSF) 过程,以有效地去除MP-HA.
- 调查化学条件对GCSF性能的影响,并分析移除机制.
主要方法:
- 作为交叉连接剂使用了拉米纳林 (LA) 与聚化 (PAC) 或聚化 (PAFC) 作为凝固剂.
- 研究了GCSF的工艺条件,并使用光谱学和理论计算 (XPS,FTIR,DLOV,DFT) 分析了去除机制.
主要成果:
- 2.5:1的LA与PAC/PAFC比率在短时间的凝血 (<1分钟) 和浮动 (<9分钟) 期间实现了高的去除率 (86%HA,93%-99%MPs).
- PAC-LA显示出强烈的去除,而PAFC-LA显示出更快的漂浮.
- 移除机制包括键吸附和通过凝花束捕获的扫除效应.
结论:
- GCSF过程提供了一种有希望的,高效和快速的方法来从水中去除MP-HA.
- 拉米纳林和凝固剂有效地形成凝片,通过吸附和扫除机制捕获和去除微塑料.
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