Reuse of aluminium-based water treatment sludge to immobilize a wide range of phosphorus contamination : equilibrium study with different isotherm models

DSpace/Manakin Repository

Show simple item record Zhao, Y.Q. Razali, Melanie Babatunde, A.O. Yang, Y. Bruen, Michael 2011-09-23T14:52:31Z 2011-09-23T14:52:31Z Taylor & Francis Group, LLC en 2007-10
dc.identifier.citation Separation Science and Technology en
dc.identifier.issn 0149-6395 (Print)
dc.identifier.issn 1520-5754 (Online)
dc.description.abstract The adsorption equilibrium of a wide range of phosphorus species by an aluminium-based water treatment sludge (Al-WTS) was examined in this study. Four kinds of adsorption-isotherm models, namely Langmuir, Freundlich, Temkin and Dubinin-Radushkevich, were used to fit the adsorption equilibrium data. In order to optimise the adsorption-isotherm model, correlation coefficient (R2) and four error functions were employed to facilitate the evaluation of fitting accuracy. Experiments have demonstrated that the Al-WTS may be an excellent raw material to adsorb P in polluted aqueous environment with adsorption ability in the order of KH2PO4 (ortho-P) > Na(PO3)6 (poly-P) > C10H14N5O7P·H2O (organic-P). More importantly, this study provides an entire comparison of the four isotherms in describing the P adsorption behaviour. By considering both the standard least-square based R2 and the results of four error functions analysis, this study reveals that the Freundlich isotherm appears to be the best model to fit the experimental equilibrium data. Langmuir and Temkin isotherms are also good models in current experimental conditions while Dubinin-Radushkevich isotherm poorly described the adsorption behaviour. The error analysis in this study provides vital evidence to reflect its role in facilitating the optimisation in adsorption isotherm study. Obviously, R2 seems inadequate in optimising multi-isotherm models due to its inherent bias resulting from the least-squares linearisation. en
dc.description.sponsorship Other funder en
dc.format.extent 333347 bytes
dc.format.mimetype application/pdf
dc.language.iso en en
dc.publisher Taylor & Francis en
dc.relation.requires Architecture, Landscape & Civil Engineering Research Collection en
dc.relation.requires Critical Infrastructure Group Research Collection en
dc.relation.requires Urban Institute Ireland Research Collection en
dc.rights This is an electronic version of an article published in Separation Science and Technology, 42 (12): 2705-2721 available online at: en
dc.subject Adsorption en
dc.subject Aluminium en
dc.subject Disposal en
dc.subject Drinking water treatment sludge en
dc.subject Phosphorus removal en
dc.subject Reuse en
dc.subject Wastewater treatment en
dc.subject.lcsh Phosphorus--Absorption and adsorption en
dc.subject.lcsh Water treatment plant residuals en
dc.subject.lcsh Water--Phosphorus content en
dc.subject.lcsh Water--Purification en
dc.title Reuse of aluminium-based water treatment sludge to immobilize a wide range of phosphorus contamination : equilibrium study with different isotherm models en
dc.type Journal Article en
dc.internal.availability Full text available en
dc.internal.webversions en
dc.status Peer reviewed en
dc.identifier.volume 42 en
dc.identifier.issue 12 en
dc.identifier.startpage 2705 en
dc.identifier.endpage 2721 en
dc.identifier.doi 10.1080/01496390701511531
dc.neeo.contributor Zhao|Y.Q.|aut| en
dc.neeo.contributor Razali|Melanie|aut| en
dc.neeo.contributor Babatunde|A.O.|aut| en
dc.neeo.contributor Yang|Y.|aut| en
dc.neeo.contributor Bruen|Michael|aut| en
dc.description.othersponsorship Environmental Protection Agency en

This item appears in the following Collection(s)

Show simple item record

This item is available under the Attribution-NonCommercial-NoDerivs 3.0 Ireland. No item may be reproduced for commercial purposes. For other possible restrictions on use please refer to the publisher's URL where this is made available, or to notes contained in the item itself. Other terms may apply.

If you are a publisher or author and have copyright concerns for any item, please email and the item will be withdrawn immediately. The author or person responsible for depositing the article will be contacted within one business day.

Search Research Repository

Advanced Search