杨凤林
Personal Homepage
Paper Publications
活性炭纤维电极上苋菜红的恒电位电化学脱色
Hits:

Indexed by:期刊论文

Date of Publication:2006-10-30

Journal:化工学报

Included Journals:Scopus、EI、PKU、ISTIC、CSCD

Volume:57

Issue:10

Page Number:2420-2427

ISSN No.:0438-1157

Key Words:恒电位;活性炭纤维;染料;脱色;电氧化;电还原

Abstract:在恒电位模式下,采用隔膜电解槽,分别以活性炭纤维(ACF)为阳极或阴极,研究了偶氮染料苋菜红的脱色行为.测量了ACF的线性扫描极化曲线,进行了控电位下苋菜红在ACF电极上的整体电解,考察了脱色率、TOC和COD去除率同电极电位之间的关系.结果表明:(1)苋菜红在ACF上的氧化电位和还原电位分别为0.6 V和-0.2 V;(2)当电极电位为-0.1~0.5 V时,脱色源于染料在ACF上的吸附,且不受极化的影响;(3)当电极电位为-0.2~-0.8 V时,脱色以染料的电还原为主,反应遵循准一级动力学,脱色速率常数与电极电位线性相关;TOC、COD去除率可达60%;(4)当电极电位为0.6~1.4 V时,脱色以染料的电氧化为主,反应同样遵循准一级动力学;TOC、COD去除率一般在30%左右.

Personal information

Professor
Supervisor of Doctorate Candidates
Supervisor of Master's Candidates

Gender:Male

Alma Mater:大连工学院

Degree:Master's Degree

School/Department:环境学院

Click:

Open time:..

The Last Update Time:..


Address: No.2 Linggong Road, Ganjingzi District, Dalian City, Liaoning Province, P.R.C., 116024

MOBILE Version