第 50 卷第 1 期 Vol. 50 No. 1 2020 年 2 月 Feb 2020

所属栏目：安全与环保 辉光放电电解等离子体降解模拟染料废水碱性紫16的研究

赵鹏飞，李敏睿 （陕西师范大学 地理科学与旅游学院，陕西 西安 710119）

摘　要：用辉光放电电解等离子体（GDEP）技术对模拟染料废水碱性紫16的降解过程进行了研究。通过对电流电压曲线分析，阐述了各阶段变化趋势成因，确定产生辉光放电电压为450 V左右。采用紫外分光光度法对不同降解时间下碱性紫16脱色率进行了分析，结果表明，在600 V电压下，20 mg·L-1碱性紫16可在40 min时脱色率达97.8%，整个降解过程符合一级动力学反应的特征。加入2 g·L-1 FeCl2后，促进了HO·的生成速度，使100 mg·L-1碱性紫16在 40 min时脱色率达到95.4%。碱性紫16在GDEP降解下，经共轭结构的破坏，助色团最终被矿化为CO2和H2O，其中HO·起到了关键性作用。

关键词：辉光放电等离子体（GDEP）；羟基自由基；Fenton反应；脱色率

中图分类号：X788　　文献标识码：A　　文章编号：1009-9212（2020）01-0066-04

Degradation of Simulated Dye Wastewater Basic Violet 16 by Glow Discharge Electrolytic Plasma

ZHAO Peng-fei, LI Min-rui (School of Geography and Tourism, Shaanxi Normal University, Xi an 710119, China)

Abstract：The degradation process of basic violet 16 in simulated dye wastewater was studied using glow discharge electrolytic plasma (GDEP). Based on the analysis of the current and voltage curve, the causes of the variation trend in each stage were explored, and the glow discharge voltage was determined to be about 450 V. The decolorization rate of basic violet 16 at different degradation times was analyzed using a UV spectrophotometry. The results showed that under 600 V voltage, the decolorization rate of alkaline violet 16 at 20 mg·L-1 could reach 97.8% at 40 min, The entire degradation process was consistent with the characteristics of a first-order kinetic reaction. After the addition of 2 g·L-1 FeCl2, which promoted the generation rate of HO· and the decolorization rate of 100 mg·L-1 basic violet 16 reach 95.4% at 40 min was achieved. Under the degradation of basic violet 16 by GDEP, through the destruction of the conjugated structure, the opening ring of the five-element nitrogen heterocyclic ring in the indole-like structure of the chromophobe was finally mineralized into CO2 and H2O, where HO· played a key role.

Key words：glow discharge electrolytic plasma(GDEP); hydroxyl radical; Fenton reaction; decolourization ratio

基金项目：中央高技基本科研业务费项目（GK201703044，GK201302034，GK201802018），陕西师范大学2017实验技术研究项目（SYJS201723）。

作者简介：赵鹏飞（1993-），男，山西忻州人，硕士研究生，研究方向：辉光放电等离子体降解染料废水（E-mail：1581145272@qq.com）。

收稿日期：2020-02-12