杨凤林
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ACF电极上苋菜红的恒电流电化学脱色
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Indexed by:期刊论文

Date of Publication:2006-04-30

Journal:高校化学工程学报

Included Journals:EI、PKU、ISTIC、CSCD

Volume:20

Issue:2

Page Number:264-269

ISSN No.:1003-9015

Key Words:恒电流;ACF染料;脱色;电氧化;电还原

Abstract:在恒电流模式下,研究了活性炭纤维(ACF)分别作阳极或阴极时对偶氮染料苋菜红的电氧化和电还原脱色.确定了ACF上苋菜红发生氧化和还原反应的电极电位分别是0.6V和-0.4V.ACF对苋菜红的脱色机制因电流密度的不同,明显地分为电氧化、电还原和吸附脱色三种过程.电氧化和电还原过程均遵循准一级反应动力学方程,并且电氧化的脱色速率常数与电流密度线性相关.电氧化脱色率在电流密度为0.5 mA·cm-2时可以达到99.1%,TOC和COD去除率最大可分别达到32.8%和52.1%;电还原脱色率在电流密度为-1.0 mA·cm-2时达到100%,TOC和COD去除率最大可分别达到58.0%和61.4%.

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Gender:Male

Alma Mater:大连工学院

Degree:Master's Degree

School/Department:环境学院

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