Removal of hazardous anions from aqueous solutions by La(III)- and Y(III)-impregnated alumina
- National Inst. of Materials and Chemical Research, Ibaraka (Japan)
- Keimyung Univ., Daegu City (Korea, Democratic People`s Republic of)
New adsorbents, La(III)- and Y(III)-impregnated alumina, were prepared for the removal of hazardous anions from aqueous solutions. A commercially available alumina was impregnated with La(III) or Y(III) ions by the adsorption process. The change in the surface charge due to the impregnation was measured by acid/base titration. The adsorption rate and the capacity of the alumina for La(III) and Y(III) ions were determined. The adsorption characteristics of the La(III)- and Y(III)-impregnated alumina and the original alumina for fluoride, phosphate, arsenate and selenite ions were analyzed under various conditions. The pH effect, dose effect, and kinetics were studied. The removal selectivity by the impregnated alumina was in the order fluoride > phosphate > arsenate > selenite. The impregnated alumina has been successfully applied for the removal of hazardous anions from synthetic and high-tech industrial wastewaters.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 415107
- Journal Information:
- Separation Science and Technology, Journal Name: Separation Science and Technology Journal Issue: 10 Vol. 31; ISSN 0149-6395; ISSN SSTEDS
- Country of Publication:
- United States
- Language:
- English
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