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dc.contributor.authorMwakabona, Hezron
dc.contributor.authorMlay, Hilda
dc.contributor.authorVan der Bruggen, Bart
dc.contributor.authorNjau, Karoli
dc.date.accessioned2023-10-04T09:30:30Z
dc.date.available2023-10-04T09:30:30Z
dc.date.issued2019-01-15
dc.identifier.urihttps://doi.org/10.1016/j.jhazmat.2018.08.088
dc.identifier.urihttps://dspace.nm-aist.ac.tz/handle/20.500.12479/2104
dc.descriptionThis research article was published in Journal of hazardous materials, Volume 362, 2019.en_US
dc.description.abstractDefluoridation properties of two Fe(III)-loaded plant biomass (Fe(III)-activated sisal fibre (Fe(III)-ASF) and post-alkalized Fe(III)-ASF (PA-Fe(III)-ASF)) distinguished by preparation pathways through exclusion/inclusion of post-alkalization are presented, with the aim of understanding the influence of post-alkalization in the preparation pathway to their fluoride removal properties. Findings reveal that PA-Fe(III)-ASF shows higher chemical stability with removal efficiency increasing towards acidic conditions, whereas Fe(III)-ASF manifests a lower chemical stability with removal efficiency increasing (in a wider pH range) with the increase in pH. This is attributable to the nature of the interactions between Fe(III) and the biomass surface functional groups. The removal efficiency by PA-Fe(III)-ASF has a strong positive correlation (0.98) to the surface charge/speciation induced by pH and the reverse is true for the Fe(III)-ASF. These findings therefore suggest that the principal fluoride removal mechanism is electrostatic interactions and ligand exchange for PA-Fe(III)-ASF and Fe(III)-ASF, respectively. Therefore, inclusion/exclusion of post-alkalization in preparation steps is an important aspect to consider in the production of Fe(III)-loaded biosorbents for water defluoridation for acquisition of specific defluoridation properties.en_US
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.subjectResearch Subject Categories::NATURAL SCIENCESen_US
dc.titleWater defluoridation by Fe (III)-loaded sisal fibre: Understanding the influence of the preparation pathways on biosorbents’ defluoridation propertiesen_US
dc.typeArticleen_US


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