A new configuration of membrane stack for retrieval of nickel absorbed in resins.
A new configuration integrated ion exchange effect system with both electro-migration and electrochemical reaction in a single cell was developed to effectively retrieve metal ions from simulated wastewater using ion exchange resins without additive chemicals. By simply assembling cation exchange resins and anion exchange resins separated by homogeneous membranes, we found that the system will always be acidic in the concentrate compartment so that ion exchange resins could be in-situ regenerated without hydroxide precipitation. Such a realizable design will be really suitable for wastewater purification.
Chen
Xue-fen
XF
Department of Environmental Engineering, Zhejiang University, Hangzhou 310027, China.
Wu
Zu-cheng
ZC
D000042:Absorption; D002852:Chromatography, Ion Exchange / Q000379:methods*; D004563:Electrochemistry / Q000379:methods*; D007475:Ion Exchange Resins / Q000737:chemistry*; D008567:Membranes, Artificial; D009532:Nickel / Q000737:chemistry* / Q000302:isolation & purification*; D014462:Ultrafiltration / Q000379:methods*; D014873:Water Pollutants / Q000302:isolation & purification*; D018508:Water Purification / Q000379:methods
D007475:Ion Exchange Resins; D008567:Membranes, Artificial; D014873:Water Pollutants; D009532:Nickel