Electro-assisted regeneration of ion exchange resins |
| |
Authors: | Zhigang LIU Ying WANG Yansheng LI Hui CHANG |
| |
Institution: | (1) School of Environmental & Chemical Engineering, Dalian Jiaotong University, Dalian, 116021, China |
| |
Abstract: | Electro-assisted regeneration (EAR) for the mixed bed of strongly acidic cation and weakly basic anion exchange resins with
the Al(OH)3 suspension in a three-compartment cell was investigated. The desalination experiments were carried out to evaluate
the characteristic of the regenerated mixed resins. Experimental results showed that the efficiency of resin regeneration
was strictly dependent on the voltage, regeneration time, and feed regenerant flow rate. The amount of the effluent reached
50 times the volume of the resins bed, and the conductivity was less than 1.0 μs/cm. Compared to the conventional ER, the
total effluent volume of EAR was about 1000 mL more than that of ER under the same conditions, and the outlet conductivity
was significantly lower. The desalination and regeneration reaction mechanisms of the mixed resins indicated the regeneration
efficiency of resin with Al(OH)3 as the regenerant was much higher than that with H2O. |
| |
Keywords: | electro-assisted regeneration (EAR) Al form resins desalination Al(OH)3 |
本文献已被 万方数据 SpringerLink 等数据库收录! |
|