REMOVAL OF FLUORIDE FROM WASTE WATER OF ALUMINIUM SMELTER BY ALUMINIUM ION LOADED ION EXCHANGE RESIN

被引：0
作者：
Padhi, B. K. [1 ]
Sharma, A. K. [1 ]
机构：
[1] Natl Aluminium Co Ltd, Alumina Refinery, R&D Lab, Damanjodi 763008, Orissa, India
来源：
TMS2011 SUPPLEMENTAL PROCEEDINGS, VOL 3: GENERAL PAPER SELECTIONS | 2011年
关键词：
Cation resin; Modification; Defluoridation; Adsorption; Complexation; AQUEOUS-SOLUTION; ADSORPTION; SORPTION;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Strong Acid Cation resin has sulphonic acid functional group (H+ form) possessing appreciable defluoridation capacity, which has been enhanced by chemical modification into Al3+ form by loading of Aluminium ions in H+ form of resin. The defluoridation process in case of Al3+ ion loaded resin was found to be 480 mg F-/kg, at 15 mg/L initial fluoride concentration. The nature and morphology of sorbents are characterized using XRD, FTIR and SEM analysis. The fluoride sorption has been explained using the Freundlich, Langmuir and Redlich-Peterson isotherms models. The calculated thermodynamic parameters such as Delta G degrees, Delta H degrees, Delta S degrees and sticking probability (S*) explains the nature of sorption. A Defluoridation Plant is in service at Aluminium Smelter of National Aluminium Company for treatment of the waste water for removing Fluoride and reutilise the water to minimise the water loss.
引用
收藏
页码：167 / 174
页数：8
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