摘要
采用电絮凝活化过硫酸钾(EC/PDS)降解盐酸四环素(TCH),考察了PDS浓度、电流强度、初始p H值及TCH初始浓度等因素对TCH降解效果影响。结果表明,在一定实验条件范围内,提高PDS浓度、电流强度及p H值均可提高TCH降解率。动力学拟合结果表明,EC/PDS体系对TCH降解,符合一级动力学模型。当TCH初始浓度为50 mg/L,电流强度为75 m A,PDS浓度为0.2 mmol/L,p H值为6,反应8 min后,TCH降解率为91.2%,相应矿化率为56.9%。相比于Fe^(2+)/PDS体系,EC和EC/PDS体系均可实现TCH降解量和降解速率提升,且EC/PDS体系>EC体系>Fe^(2+)/PDS体系。
The electroflocculation activated by potassium persulfate(EC/PDS)was used to degrade tetracycline hydrochloride(TCH).The effects of PDS concentration,current intensity,initial pH and initial TCH concentration on the degradation of TCH were investigated.Within a certain range of experimental conditions,the TCH degradation rate could be improved by increasing the PDS concentration,current intensity and pH value.The kinetic fitting results showed that the degradation process of the TCH in EC/PDS system was in accordance with quasi first-order kinetics.The degradation of TCH cound reach 91.2%,corresponding mineralization rate was 56.9%,within 8 minutes by EC/PDS system under the conditions of the the initial concentration of TCH 50 mg/L,the current intensity 75 mA,the PDS concentration of 0.2 mmol/L,and the pH=6.Compared with the Fe^(2+)/PDS system,both EC and EC/PDS systems cound significantly achieve increased TCH degradation quantity and degradation efficiency and the degradation performance of TCH in three systems was EC/PDS system>EC system>Fe^(2+)/PDS system.
作者
刘建新
姚创
邓运泉
陈威宇
伦见强
吴文滔
陈宇丹
杨司逸
Liu Jianxin;Yao Chuang;Deng Yunquan;Chen Weiyu;Lun Jianqiang;Wu Wentao;Chen Yudan;Yang Siyi(Guangdong Research Institute of Engineering and Technology Co.,Ltd.,Guangdong Wastewater Treatment Engineering Technology Center of Standard&Efficiency Increasing and Resource Recycling,Guangzhou 510440;College of Resources and Environment,Zhongkai University of Agriculture and Engineering,Guangzhou 510225,China)
出处
《广东化工》
CAS
2023年第10期21-24,共4页
Guangdong Chemical Industry
关键词
电絮凝
活化
过硫酸钾
高级氧化
盐酸四环素
electrocoagulation
activation
potassium persultfate
advanced oxidation process
tetracycline hydrochloride
作者简介
刘建新(1990-),男,山西大同人,硕士,工程师,主要研究方向为污废水处理技术开发及应用研究;通讯作者:姚创。
