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dc.contributor.author Masindi, Vhahangwele
dc.contributor.author Gitari, WM
dc.contributor.author Ngulube, T
dc.date.accessioned 2016-01-26T07:02:59Z
dc.date.available 2016-01-26T07:02:59Z
dc.date.issued 2015-09
dc.identifier.citation Masindi, V, Gitari, MW and Ngulube, T. Kinetics and equilibrium studies for removal of fluoride from underground water using cryptocrystalline magnesite. 2015. Journal of Water Reuse and Desalination, vol. 5(3), pp 282-292 en_US
dc.identifier.issn 2220-1319
dc.identifier.uri http://hdl.handle.net/10204/8372
dc.description Copyright: 2015 Taylor & Francis. Due to copyright restrictions, the attached PDF file only contains the abstract of the full text item. For access to the full text item, please consult the publisher's website. The definitive version of the work is published in Journal of Water Reuse and Desalination, Vol. 5(3), pp 282-292 en_US
dc.description.abstract In the present study, the defluoridation capabilities and adsorption mechanisms of cryptocrystalline magnesite were evaluated. All experiments were done by batch procedure. Conditions assessed include time, dosage, concentration, pH and the effects of competing ions. Optimum defluoridation conditions were observed to be 20 g/L magnesite, 2:100 solid:liquid ratio, 20 min of agitation and 60 mg/L fluoride concentration. Adsorption of fluoride by magnesite was observed to be independent of pH. Cryptocrystalline magnesite showed >99% efficiency for fluoride removal. Adsorption kinetics fitted better to a pseudo-second order than a pseudo-first-order thus confirming chemisorption. Adsorption data fitted better to a Langmuir than a Freundlich adsorption isotherm thus confirming monolayer adsorption. Cryptocrystalline magnesite successfully removed excess fluoride from aqueous solution to below Department of Water Affairs and Forestry water quality guidelines. As such, this material can be used for a point source defluoridation technique in rural areas and households in South Africa and other developing countries. Based on comparison studies, cryptocrystalline magnesite proved to have high adsorption capacity for fluoride removal and can be used as a substitute for conventional treatment methods. en_US
dc.language.iso en en_US
dc.publisher IWA Publishing en_US
dc.relation.ispartofseries Worklist;15134
dc.subject Adsorption en_US
dc.subject Defluoridation en_US
dc.subject Fluoride en_US
dc.subject Isotherms en_US
dc.subject Kinetics en_US
dc.subject Magnesite en_US
dc.title Kinetics and equilibrium studies for removal of fluoride from underground water using cryptocrystalline magnesite en_US
dc.type Article en_US


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