A new regeneration approach to cation resins with aluminum salts: application of desalination by its mixed bed

2012年第6卷第1期

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《环境科学与工程前沿（英文）》 >> 2012年第6卷第1期 doi: 10.1007/s11783-010-0262-6

A new regeneration approach to cation resins with aluminum salts: application of desalination by its mixed bed

School of Environmental & Chemical Engineering, Dalian Jiaotong University, Dalian 116028, China

发布日期： 2012-02-01

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摘要

A novel method for the regeneration of cation exchange resins by aluminum (Al) salts was investigated in order to improve the regeneration efficiency of resins and reduce the dosage of regenerant. The influences of Al concentration and the pH of regeneration solution on resin transformation had been studied. The desalination experiments were carried out to evaluate the characteristics of the Al form resins. Experimental results showed that the regeneration rate of resins was strictly dependent on Al concentration and the pH of the solution. Compared to the conventional regeneration method, the Al form mixed bed exhibited the same desalination capability as the H form mixed bed (MB), and the total organic carbon (TOC) removal was up to 90%, clearly higher than that of the H form. Al salt solution could be utilized repeatedly to regenerate Al form resins.

关键词

aluminum (Al) form resins ; desalination ; mixed bed (MB) ; regeneration