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Mg/Al double-metal hydroxide regeneration of anion exchange resin by electric field intensification.
- Source :
-
Water Science & Technology . 2017, Vol. 75 Issue 6, p1309-1318. 10p. - Publication Year :
- 2017
-
Abstract
- Fouled anion exchange resins were regenerated by electric field intensification of Mg/Al doublemetal hydroxides. Regenerative experiments were performed with varying voltages (10-30 V) and dosages of Mg/Al hydroxides (0.045-0.135 mol and 0.015-0.045 mol, respectively) for 1-5 h. Optimal results were obtained under the following regenerative conditions: 20 V, 4 h, and 0.09/0.03 mol of Mg/Al hydroxides. The maximum regenerative capacity of resins was increased to 41.07%. The regenerative mechanism was presented by Fourier-transform infrared spectrum of resins and Mg/Al hydroxides, and the regenerative degree was analyzed with respect to conductivity, pH value, and electric current. Mg/Al hydroxides were also recycled after the regeneration. This method was proven to be cost-effective and environmentally friendly. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 02731223
- Volume :
- 75
- Issue :
- 6
- Database :
- Academic Search Index
- Journal :
- Water Science & Technology
- Publication Type :
- Academic Journal
- Accession number :
- 122030177
- Full Text :
- https://doi.org/10.2166/wst.2016.588