Impact of resin loading on ion exchange equilibrium for removal of organic matter and inorganic ions

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dc.contributor.authorPidoux, Lucie
dc.contributor.authorShorney-Darby, Holly
dc.contributor.authorVaudevire, Elisabeth
dc.contributor.authorMartijn, Bram
dc.contributor.authorJarvis, Peter
dc.contributor.authorCarra, Irene
dc.date.accessioned2022-02-25T11:21:15Z
dc.date.available2022-02-25T11:21:15Z
dc.date.issued2022-02-19
dc.description.abstractIon Exchange (IEX) applications for drinking water can be limited due to high volumes of brine, brine waste and treated water corrosivity. Reusing the resin by operating at reduced regeneration frequency can overcome this. However, assessing changes on the resin loading over reuse cycles is complex because multiple presaturant ions participate in the exchange and existing models only account for the exchange with one presaturant ion. This study developed a theoretical multicomponent model for the determination of IEX equilibria when the resin loading increases due to reuse. The model suggested that both electrostatic interactions and admicelle formation were the separation mechanisms. The model revealed that under reduced regeneration frequencies, brine use and waste generation can be reduced by more than 90%, where the bicarbonate-form resin offered the potential for lower corrosivity. However, changes in resin loading after 5 reuse cycles showed that the risk of corrosion increased. For the tested source water, reusing the bicarbonate-form resin every 5 cycles would achieve the most sustainable option with 41% NOM removal and 79% brine and waste reduction. Under these conditions, almost 100% of exchange capacity is recovered after regeneration.en_UK
dc.identifier.citationPidoux L, Shorney-Darby H, Vaudevire E, et al., (2022) Impact of resin loading on ion exchange equilibrium for removal of organic matter and inorganic ions. Journal of Hazardous Materials, Volume 431, June 2022, Article number 128530en_UK
dc.identifier.issn0304-3894
dc.identifier.urihttps://doi.org/10.1016/j.jhazmat.2022.128530
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/17604
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectadsorptionen_UK
dc.subjectequilibriumen_UK
dc.subjection exchangeen_UK
dc.subjectnatural organic matteren_UK
dc.subjectselectivityen_UK
dc.titleImpact of resin loading on ion exchange equilibrium for removal of organic matter and inorganic ionsen_UK
dc.typeArticleen_UK

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