Passivation mechanism of electrocoagulation process in removing heavy metals from wastewater
XU Long-qian1, LIU Shu-li1, XU Xiao-jun1, CAO Guang-zhu2
1. Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China; 2. Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China
Abstract: The latest research progress in the passivation mechanism of electrocoagulation method serving in the treatment of heavy metals containing wastewater is reviewed.The influences of treatment modes,power supply types,pH value and electrolytes (anions) on the electrocoagulation process of electrode are analyzed and discussed.The existing problems and future perspectives for the application of electrocoagulation method on heavy metal removal are discussed and expected.
徐龙乾, 刘树丽, 徐晓军, 曹广祝. 电絮凝法在重金属废水处理中钝化机理的研究进展[J]. 现代化工, 2017, 37(12): 33-37.
XU Long-qian, LIU Shu-li, XU Xiao-jun, CAO Guang-zhu. Passivation mechanism of electrocoagulation process in removing heavy metals from wastewater. Modern Chemical Industry, 2017, 37(12): 33-37.
[1] 刘玉玲,陆君,马晓云,等.电絮凝过程处理含铬废水的工艺及机理[J].环境工程学报,2014,8(9):3640-3644. [2] 郑志勇,徐海音,宋佩佩,等.电絮凝在水处理中的研究进展[J].现代化工,2015,35(4):29-32. [3] Heidmann I,Calmano W.Removal of Cr(Ⅵ) from model wastewaters by electrocoagulation with Fe electrodes[J].Sep Purif Technol,2008,61(1):15-21. [4] Neši Ać S.Key issues related to modelling of internal corrosion of oil and gas pipelines-A review[J].Corros Sci,2007,49:4308-4338. [5] Brahmi K,Bouguerra W,Belhsan H.Use of electrocoagulation with aluminum electrodes to reduce hardness in tunisian phosphate mining process water[J].Mine Water Environ,2015,35(3):1-8. [6] Mahesh S,Garg K K,Srivastava V C,et al.Continuous electrocoagulation treatment of pulp and paper mill wastewater:Operating cost and sludge study[J].RSC Advances,2016,6(20):16223-33. [7] Yang Z H,Xu H Y,Zeng G M,et al.The behavior of dissolution/passivation and the transformation of passive films during electrocoagulation:Influences of initial pH,Cr(Ⅵ) concentration,and alternating pulsed current[J].Electrochim Acta,2015,153:149-158. [8] Huang C H,Chen L,Yang C L.Effect of anions on electrochemical coagulation for cadmium removal[J].Sep Purif Technol,2009,65(2):137-146. [9] Guzman A,Nava J L,Coreno O,et al.Arsenic and fluoride removal from groundwater by electrocoagulation using a continuous filter-press reactor[J].Chemosphere,2016,144:2113-2120. [10] Flores O J,Nava J L,Carreño G,et al.Arsenic removal from groundwater by electrocoagulation in a pre-pilot-scale continuous filter press reactor[J].Chem Eng Sci,2013,97:1-6. [11] 罗亚田,曾勇辉,张列宇,等.电凝聚过程中消除电极钝化方法的研究进展[J].能源环境保护,2006,20(3):4-6. [12] de Mello Ferreira A,Marchesiello M,Thivel P X.Removal of copper,zinc and nickel present in natural water containing Ca2+ and ions by electrocoagulation[J].Sep Purif Technol,2013,107:109-117. [13] Nguyen D D,Ngo H H,Guo W,et al.Can electrocoagulation process be an appropriate technology for phosphorus removal from municipal wastewater?[J].Sci Total Environ,2016,563-564:549-556. [14] Mansoorian H J,Mahvi A H,Jafari A J.Removal of lead and zinc from battery industry wastewater using electrocoagulation process:Influence of direct and alternating current by using iron and stainless steel rod electrodes[J].Sep Purif Technol,2014,135:165-175. [15] Vasudevan S,Lakshmi J.Effects of alternating and direct current in electrocoagulation process on the removal of cadmium from water-A novel approach[J].Sep Purif Technol,2011,80(3):643-651. [16] 虞少嵚,熊道文,陈湘斌,等.周期换向电絮凝法用于处理含铬废水研究[J].中国环境科学,2014,34(1):118-122. [17] Keshmirizadeh E,Yousefi S,Rofouei M K.An investigation on the new operational parameter effective in Cr(Ⅵ) removal efficiency:A study on electrocoagulation by alternating pulse current[J].J Hazard Mater,2011,190(1/2/3):119-124. [18] Shu J,Liu R,Liu Z,et al.Manganese recovery and ammonia nitrogen removal from simulation wastewater by pulse electrolysis[J].Sep Purif Technol,2016,168:107-113. [19] Aoudj S,Khelifa A,Drouiche N,et al.Simultaneous removal of chromium(Ⅵ) and fluoride by electrocoagulation-electroflotation:Application of a hybrid Fe-Al anode[J].Chem EngJ,2015,267:153-162. [20] Wang Y,Lin H,Jin F,et al.Electrocoagulation mechanism of perfluorooctanoate (PFOA) on a zinc anode:Influence of cathodes and anions[J].Sci Total Environ,2016,557/558:542-550. [21] Pyun S I,Moon S M,Ahn S H,et al.Effects of Cl-,NO3- and SO2-4 ions on anodic dissolution of pure aluminum in alkaline solution[J].Corros Sci,1999,41(4):653-667. [22] Barı Aşçı S,Turkay O.Domestic greywater treatment by electrocoagulation using hybrid electrode combinations[J].J Water Process Eng,2016,10:56-66. [23] Shu J,Liu R,Liu Z,et al.Simultaneous removal of ammonia and manganese from electrolytic metal manganese residue leachate using phosphate salt[J].J Clean Prod,2016,135:468-75. [24] Hu C Y,Lo S L,Kuan W H.Effects of co-existing anions on fluoride removal in electrocoagulation (EC) process using aluminum electrodes[J].Water Res,2003,37(18):4513-4523. [25] Kabda Aşlı I,Arslan-Alaton I,Ölmez-Hancı T,et al.Electrocoagulation applications for industrial wastewaters:A critical review[J].Environ Technol Rev,2012,1(1):2-45. [26] 谭竹,杨朝晖,徐海音,等.铝铁电极联用电絮凝法处理Cu-EDTA络合废水[J].环境工程学报,2014,8(8):3167-3173. [27] Kuokkanen V,Kuokkanen T,Ramo J,et al.Electrocoagulation treatment of peat bog drainage water containing humic substances[J].Water Res,2015,79:79-87. [28] Chen X,Chen G,Yue P L.Separation of pollutants from restaurant wastewater by electrocoagulation[J].Sep Purif Technol,2000,19(1/2):65-76.