Recovery of Ni(Ⅱ)from real electroplating wastewater using fixed-bed resin adsorption and subsequent electrodeposition
作者机构：State Key Joint Laboratory of Environment Simulation and Pollution ControlBeijing Key Laboratory for Emerging Organic Contaminants ControlSchool of EnvironmentTsinghua UniversityBeijing 100084China Department of Environmental EngineeringCollege of Chemistry and Environmental EngineeringShenzhen UniversityShenzhen 518060China Department of Chemical and Environmental EngineeringYale UniversityNew HavenCT 06511USA
出 版 物：《Frontiers of Environmental Science & Engineering》 (环境科学与工程前沿（英文）)
年 卷 期：2019年第13卷第6期
页 面：115-126页
核心收录：
学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学]
主 题：Nickel removal Ion exchange Electroplating wastewater Regeneration Electrodeposition
摘 要：Effective recovery of high-value heavy metals from electroplating wastewater is of great significance,but recovering nickel ions from real electroplating wastewater as nickel sheet has not been *** this study,the pilot-scale fixed-bed resin adsorption was conducted to recover Ni(Ⅱ)ions from real nickel plating wastewater,and then the concentrated Ni(Ⅱ)ions in the regenerated solution were reduced to nickel sheet via electrodeposition.A commercial cation-exchange resin was selected and the optimal resin adsorption and regeneration conditions were *** resin exhibited an adsorption capacity of 63 mg/g for Ni(Ⅱ)ions,and the average amount of treated water was 84.6 bed volumes(BV)in the pilot-scale *** the adsorption by two ion-exchange resin columns in series and one chelating resin column,the concentrations of Ni(Ⅱ)in the treated wastewater were below 0.1 mg/*** the regeneration of the spent resin using 3 BVof 4%(w/w)HC1 solution,1.5 BV of concentrated neutral nickel solution(30 g/L)was obtained and used in the subsequent electrodeposition *** the aeration method,alkali and water required in resin activation process were greatly reduced to 2 BV and 3 BV,*** the optimal electrodeposition conditions,95.6%of Ni(Ⅱ)in desorption eluent could be recovered as the elemental nickel on the cathode,llie total treatment cost for the resin adsorption and regeneration as well as the electrodeposition was calculated.
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