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从石化废水中提升多组分溶解有机化学品的提升选择性阶段性吸附

Jinming Lei¹, Ruifang Qi², Sadam Hussain Tumrani³

¹State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing, 100875, PR China; The Key Laboratory of Water and Sediment Sciences, Ministry of Education, School of Environment, Beijing Normal University, Beijing 100875, PR China.

The Science of the total environment

|December 27, 2023

概括

这项研究引入了采用活性炭和二氧化凝的两步吸附方法,有效地从石化废水中去除各种污染物,实现有机碳和生物毒性的高去除率.

科学领域:

环境科学环境科学
水处理技术水处理技术
吸附科学吸附科学

背景情况:

石化废水含有复杂的溶解有机化学物质混合物,这给净化带来了重大挑战.
逐步选择性吸附是一种有前途的策略,用于加强处理这些复杂的废水.

研究的目的:

通过逐步吸附方法,加强从石化废水中去除多种溶解有机化学物质.
研究N,N-二甲基形式胺 (DMF),光溶解有机物 (FDOM) 和其他有机成分的选择性去除机制.
评估组合吸附剂的协同效应及其长期稳定性.

主要方法:

一个采用煤炭活性炭和二氧化凝的两步吸附过程.
选择性吸附机制的分析,包括疏水性,静电性和亲水性相互作用.
对溶解有机碳和生物毒性的去除效率的评估.
在多个吸附-脱附周期中评估吸附剂稳定性.

主要成果:

煤炭活性炭和二氧化凝的组合显示出协同效应,使得各种污染物可以被去除.
在石化废水中,溶解有机碳的去除率为80.5%,生物毒性为86.7%.
吸附剂性能在五个周期内保持稳定,表明可重复使用性良好.
化选择性吸附机制:用于疏水性有机物 (例如DMF) 的活性炭和用于水友性有机物的二氧化.

结论:

增强的两步吸附过程有效地从石化废水中去除多种污染物.
了解选择性吸附机制为优化废水处理策略提供了洞察力.
这种方法为复杂的工业废水深度处理提供了可行的解决方案.

关键词:

溶解有机物 (DOM) 是一种有机物.石油化工废水的废水是石油化工废水.快速排毒的方法快速排毒的方法选择性吸附是一种选择性吸附.有协同效应的效应.两个阶段的治疗方法.

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