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Removal of ortho-phosphate from aqueous solution by adsorption onto dolomite

Date
2014
Abstract
An experimental study on the adsorption of phosphate onto cost effective fine dolomite powder is presented. The effect of solution pH, solution ionic strength and adsorption isotherm were examined. The adsorption of phosphate was pH dependent and phosphate adsorption favoured acidic conditions. The adsorption was significantly influenced by solution ionic strength indicating outer-sphere complexation reactions. The experimental data further indicated that the removal of phosphate increased with increase in the ionic strength of solution. The experimental data were modelled with different isotherms: Langmuir, Freundlich and Redlichâ Peterson isotherms. It was found that the Redlichâ Peterson isotherm depicted the equilibrium data most accurately. The overall kinetic data fitted very well the pseudo-first-order rate model.
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Description
peer-reviewed
Publisher
Elsevier
Citation
Journal of Environmental Engineering;2 (2), pp. 1123-1130
Collections
Bernal Institute
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Walker_2014_Removal.pdf
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Keywords
phosphate nutrient, phosphate adsorption, dolomite, wastewater treatment
ULRR Identifiers
https://researchrepository.ul.ie/handle/10344/7255
 https://doi.org/10.34961/4684
Funding code
Funding Information
Sustainable Development Goals
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Type
Article
Rights
https://creativecommons.org/licenses/by-nc-sa/1.0/
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