@article { author = {Daniel, R. and Prabhakara Rao, A.V.S.}, title = {An Efficient Removal of Arsenic from Industrial Effluents using Electro-coagulation as Clean Technology Option}, journal = {International Journal of Environmental Research}, volume = {6}, number = {3}, pages = {711-718}, year = {2012}, publisher = {University of Tehran/Springer}, issn = {1735-6865}, eissn = {2008-2304}, doi = {10.22059/ijer.2012.542}, abstract = {This paper is a preliminary communication of a study on removal and recovery of heavy metalsfrom industrial waste waters using electro-coagulation (EC) technique. The larger study envisages use of solarenergy for producing the D.C. current, and simple chemical methods of standard methods in chemistry like useof hydrochloric acid, hydrogen sulfide, collection of precipitate, incineration and getting metal oxides in themost economical way of metal recovery. However, this paper reports on the removal of Arsenic (As) fromindustrial effluent using electro-coagulation (EC) technique. The optimization has been performed to increasethe removal efficiency of As by varying initial pH (2-10), time of electrolysis (5-30min) and current density(0.8-4.8 A/dm2). For the first time, we notice that the current density 4.8 A/dm2 has been observed to producethe quickest removal (99.9%) within 10min. The phenomenal COD reduction from 400mg/l to 30mg/l withelectrolysis time of 15min is a significant finding, to achieve this type of COD reduction by the existingmethods generate huge quantities of sludge. The sludge formed in the reaction vessel also have been Investigated.}, keywords = {Combined Al-Fe electrode system,wastewater,Initial pH,Current density,Electrolysis tim,COD}, url = {https://ijer.ut.ac.ir/article_542.html}, eprint = {https://ijer.ut.ac.ir/article_542_e76e7059a4c454152c67ef0399b92f99.pdf} }