光催化
二氧化钛
降级(电信)
微囊藻毒素
过滤(数学)
化学
污染物
水处理
催化作用
膜
环境化学
化学工程
色谱法
材料科学
环境科学
蓝藻
环境工程
有机化学
计算机科学
冶金
生物化学
遗传学
电信
工程类
细菌
数学
统计
生物
作者
Olivia Schneider,Robert Liang,Leslie M. Bragg,Ivana Jaciw-Zurakowsky,Azar Fattahi,Shasvat Rathod,Peng Peng,Mark R. Servos,Yunhong Zhou
出处
期刊:Catalysts
[MDPI AG]
日期:2019-02-14
卷期号:9 (2): 181-181
被引量:23
摘要
Toxic microcystins (MCs) produced by freshwater cyanobacteria such as Microcystis aeruginosa are of concern because of their negative health and economic impacts globally. An advanced oxidation process using UV/TiO2 offers a promising treatment option for hazardous organic pollutants such as microcystins. The following work details the successful degradation of MC-LA, MC-LR, and MC-RR using a porous titanium–titanium dioxide (PTT) membrane under UV-LED light. Microcystin quantitation was achieved by sample concentration and subsequent LC–MS/MS analysis. The PTT membrane offers a treatment option that eliminates the need for the additional filtration or separation steps required for traditional catalysts. Controlled periodic illumination was successfully used to decrease the total light exposure time and improve the photonic efficiency for a more cost-effective treatment system. Individual degradation rates were influenced by electrostatic forces between the catalyst and differently charged microcystins, which can potentially be adjusted by modifying the solution pH and the catalyst’s isoelectric point.
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