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- Title
Batch and Column Operations for the Removal of Fluoride from Aqueous Solution Using Bottom Ash.
- Authors
Ramesh, S. T.; Gandhimathi, R.; Nidheesh, P. V.; Taywade, M.
- Abstract
Millions of people rely on drinking water that contains excess fluoride. In fluoride endemic areas, especially small communities with staggered habitat, defluoridation of potable water supply is still a problem. In this study, adsorption potential of bottom ash was investigated for defluoridation of drinking water using batch and continuous fixed bed column studies. Batch sorptive defluoridation conducted under experimental conditions such as pH, temperature, particle size, agitation time and dosage. Adsorption isotherms have been modeled by Langmuir and Freundlich isotherms. The fluoride sorption capacity at a breakthrough point for bottom ash was greatly influenced by bed depth. The results were then analyzed using the Bed Depth Service Time (BDST) Model, and various performance parameters like Adsorption Capacity, Critical Bed Depth, and Adsorption Rate Constant were evaluated. With the observed data the Thomas model and the Yoon Nelson model fitted well and the constants were found.
- Subjects
FLUORIDES; AQUEOUS solutions; WATER supply; ATMOSPHERIC temperature; DATA analysis; ADSORPTION (Chemistry); DRINKING water purification
- Publication
Environmental Research, Engineering & Management / Aplinkos Tyrimai, Inžinerija ir Vadyba, 2012, Vol 60, Issue 2, p12
- ISSN
1392-1649
- Publication type
Article
- DOI
10.5755/j01.erem.60.2.1396