Electrocoagulation as a remediation tool for wastewaters containing arsenic |
| |
| Affiliation: | 1. School of Mechanical, Aerospace and Automotive Engineering, Faculty of Engineering, Environmental and Computing, Coventry University, Coventry, CV1 2JH, UK;2. Department of Biochemistry, University of Agriculture, Faisalabad, 38000, Pakistan;3. School of Engineering and Applied Science, Aston University, Aston Triangle, Birmingham, B4 7ET, UK;1. Faculty of Applied Ecology, Singidunum University, Pozeska 83a, 11030 Belgrade, Serbia;2. University of Novi Sad Faculty of Sciences, Department of Chemistry, Biochemistry and Environmental Protection, Trg D. Obradovi?a 3, 21000 Novi Sad, Serbia;3. Faculty of Technology, University of Novi Sad, Bulevar Cara Lazara 1, 21000 Novi Sad, Serbia;1. College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China;2. Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, PR China;3. College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, PR China;1. Department of Environmental Engineering, Gebze Technical University, 41400 Gebze, Turkey;2. University of Kocaeli, Department of Environmental Protection, 41275 Izmit, Kocaeli, Turkey;3. Department of Chemistry, Gebze Technical University, 41400 Gebze, Turkey |
| |
| Abstract: | This work shows results of electrocoagulation of solutions containing arsenic. The continuous flow treatment consisted of an electrocoagulation reactor with two parallel iron plates and a sedimentation basin.The results showed that the electrocoagulation process of a 100 mg/L As(V) solution could decrease the arsenic concentration to less than 2 mg/L in the effluent with a current density of 1.2 A/dm2 and a residence time of around 9 min. Liquid flow was 3 L/h, and the DC current was reversed each 2 min.Increasing the current density from 0.8 to 1.2 A/dm2, the Fe3+ and OH? dosages increase too, and thereby favouring the As removal. On the other hand, it seems that increasing the current density beyond a maximum value, the electrocoagulation process would not improve further. This could probably be explained by passivation of the anode. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
