摘要
采用电絮凝法处理Ni-EDTA废水,研究了溶液初始浓度、电解质浓度、反应时间及电流密度四个因素对水中污染物的去除效果影响。结果表明:在溶液pH为6.5,Ni-EDTA初始浓度为0.85 mmol·L^(-1),电流密度为2.5 m A·cm^(-2),Ni^(2+)与TOC去除率在50 min时达到最大值,分别为74.85%与60.50%。随着电流密度的升高,Ni^(2+)与TOC去除率在短时间后达到较高去除率。Ni^(2+)与TOC去除过程均符合一级动力学模型。对溶液进行三维荧光扫描,分析结果表明:水中的类富里酸经电絮凝降解为类色氨酸。
Ni-EDTA wastewater was treated by Electro-coagulation.The effects of initial concentration of solution,electrolyte concentration,reaction time and current density on the removal of pollutants in water were studied.The results showed that the maximum removal rate of Ni2+and TOC reached 74.85%and 60.50%respectively at the initial pH of 6.5,the initial concentration of Ni-EDTA 0.85 mmol·L-1 and the current density 2.5 mA·cm-2.With the increase of current density,the removal rates of Ni2+and TOC reach higher removal rates in a short time.Ni2+and TOC removal process are in line with the first-order kinetic model.The solution was subjected to three-dimensional fluorescence scanning.The analysis results showed that the fulvic acid in water was degraded to tryptophan by electrocoagulation.
作者
凌琪
包建宏
伍昌年
王晏平
LING Qi;BAO Jianhong;WU Changnian;WANG Yanping(Key Laboratory of Water Pollution Control and Wastewater Resources of Anhui Province,Anhui Jianzhu University,Hefei Anhui 230601,China;School of Environment and Energy Engineering,Anhui Jianzhu University,Hefei Anhui 230601,China)
出处
《阜阳师范学院学报（自然科学版）》
2018年第3期46-49,共4页
Journal of Fuyang Normal University(Natural Science)
基金
国家水体污染控制与治理科技重大专项课题(2014ZX07405003)
安徽省教育厅自然科学研究重点项目(KJ2016A816)资助
关键词
电絮凝
Ni-EDTA
电镀废水
三维荧光
动力学分析
electro-coagulation
Ni-EDTA
electroplating wastewater
three-dimensional fluorescence
kinetics analysis
