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开发一个10升试点规模的微纳米泡 (MNB) 增强的光催化系统,用于废水处理

Mengyu Zhao¹, Haining Cui¹, Chan Wang¹

¹International Research Center for Photoresponsive Molecules and Materials, School of Chemical and Material Engineering, Jiangnan University, Wuxi, People's Republic of China.

Environmental technology

|March 12, 2024

概括

微纳米气泡 (MNB) 与ZnO光催化和紫外线相结合,显著提高了污染物的降解. 这种MNB/ZnO/UV系统为废水处理应用提供了一个有希望的,高效的解决方案.

科学领域:

环境科学环境科学
化学工程是化学工程的重要组成部分.
材料科学材料科学材料科学

背景情况:

光催化降解是净化水的关键技术.
微纳米气泡 (MNB) 可以改善质量转移和水中的溶氧水平.
ZnO是污染物降解的成熟光催化剂.

研究的目的:

开发和评估使用ZnO和紫外线光的微纳米泡 (MNB) 增强的光催化降解系统.
将MNB/ZnO/UV系统的效率与其他降解系统进行比较.
调查各种操作参数对酸降解的影响.

主要方法:

一个10升试验规模的MNB/ZnO/UV反应堆被设计并运行.
酸 (SA) 被用作模型污染物.
通过比较不同条件下的降解率 (MNB,UV,MNB/UV,MNB/ZnO,ZnO/UV) 和不同的参数 (催化剂剂量,污染物度,空气吸入率,pH,盐含量) 来评估系统性能.

主要成果:

与单个组件或组合相比,MNB/ZnO/UV系统显示出更高的降解效率.
在中性pH,0.3g/L ZnO剂量和0.1L/min空气吸入速率下,可以实现SA的最佳降解.
这种MNB/ZnO/UV系统的动力常数比传统的ZnO/UV系统高4.5倍.
该系统在净化湖泊和河流水方面取得了成功.

结论:

通过改善气液质量转移和溶解氧度,MNB技术显著提高了基于ZnO的光催化降解的效率.
MNB/ZnO/UV系统在降解酸方面非常有效,并显示出对现实世界废水处理的潜力.
该试点规模的系统在净化自然水体方面取得了成功应用,突出显示了其实际可行性.

关键词:

微纳米气泡是一个微纳米气泡.ZnO ZnO ZnO ZnO ZnO ZnO ZnO ZnO ZnO ZnO ZnO ZnO 溶解的氧气是一种溶解氧气.光催化降解的分解盐酸盐酸是什么盐酸盐酸是什么

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