@article {Yu:2012:1061-4303:2115,
	author = "Yu, Shi-Hua and Dong, Xiao-Le and Gong, Hong and Jiang, Heng and Liu, Zhi-Gang",
	title = "Adsorption Kinetic and Thermodynamic Studies of Phosphate onto Tantalum Hydroxide",
	journal = "Water Environment Research",
	volume = "84",
	number = "12",
	year = "2012",
	abstract = "Tantalum hydroxide exhibits the ability for the removal of phosphate from aqueous solution. The kinetic study, adsorption isotherm, thermodynamic study, desorption, and foreign anions effect were examined in batch experiments. The kinetic process was very well described by a pseudo-second-order rate model. The adsorption isotherms showed that phosphate uptake fitted with a Langmuir-type model very well, with an increase of PO<SUB>4</SUB><SUP>3-</SUP> adsorption capacity from 78.5 to 97.0 mg/g when the temperature increased from 298 to 338 K. The negative values of <I>&#916;G<SUP>0</SUP></I> and the positive values of <I>&#916;H<SUP>0</SUP></I> indicated that the phosphate adsorption process was spontaneous and endothermic naturally. While the <I>&#916;S<SUP>0</SUP></I> values obtained were positive, indicating an increase in randomness at the solid-liquid interface during the adsorption. Foreign anions tests showed that the presence of competitive ions cause minimal interference with the adsorption of phosphate on tantalum hydroxide.",
	pages = "2115-2122",
	url = "http://www.ingentaconnect.com/content/wef/wer/2012/00000084/00000012/art00006",
	doi = "doi:10.2175/106143012X13415215906933",
	keyword = "desorption, kinetics, mechanism, phosphate adsorption, tantalum hydroxide, thermodynamics"
}