A new regeneration approach to cation resins with aluminum salts: application of desalination by its mixed bed |
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| Authors: | Zhigang Liu Shaomin Zhu and Yansheng Li |
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| Institution: | (1) Department of Chemistry, Faculty of Arts and Sciences, Karadeniz Technical University, 61080 Trabzon, Turkey;(2) Karadeniz Technical University, Ma?ka Vocational School, Ma?ka, Trabzon, Turkey; |
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| Abstract: | 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 Al3+ 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 Al3+ 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. |
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