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http://dx.doi.org/10.14481/jkges.2014.15.12.5

A Study for the Removal of Phosphorous Using Coated Exfoliated Vermiculite  

Kim, Seogku (Department of Environmental Engineering, Korea Institute of Construction Technoloy)
Lee, Taeyoon (Department of Environmental Engineering, Pukyong National University)
Publication Information
Journal of the Korean GEO-environmental Society / v.15, no.12, 2014 , pp. 5-13 More about this Journal
Abstract
In this study, exfoliated vermiculite (EV) coated with glycerol was tested for its abiility to remove phosphorus in aqueous solution. The glycerol modified vermiculite (GS) was prepared with EV/glycerol ratio of 1/4 where glycerol contained 4 mol% $H_2SO_4$ and heated until designated temperature. GS heated at $380^{\circ}C$ showed that the specific surface area was $53.1m^2/g$ and mass loss due to oxidation of carbon was maximum from TGA analysis. Removal of phosphorus using GS heated at $380^{\circ}C$ was well explained by Langmuir isotherm model and maximum sorption capacity of 714.3 mg/kg is comparable or greater than those of other clay orignated sorbents for phosphorus.
Keywords
Exfoliated vermiculite; Glycerol; Phosphorus; Adsorption; Maximum sorption capacity;
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Times Cited By KSCI : 2  (Citation Analysis)
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