Demonstration of ion exchange technology for phosphorus removal and recovery from municipal wastewater

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dc.contributor.authorGuida, Samuela
dc.contributor.authorRubertelli, Giorgia
dc.contributor.authorJefferson, Bruce
dc.contributor.authorSoares, Ana
dc.date.accessioned2021-04-28T10:29:14Z
dc.date.available2021-04-28T10:29:14Z
dc.date.issued2021-04-20
dc.description.abstractOrthophosphate (PO4-P) removal and recovery from municipal wastewater were investigated in a 10 m3/day hybrid anion exchanger (HAIX) demonstration plant. To date, HAIX resins have been investigated for PO4-P removal at laboratory scale with promising results but there is a need to investigate the application of the technology at larger scale, over extended operation whilst establishing an efficient regenerant management solution. The HAIX removed an average of 6 mg PO4-P /L to >0.3 mg PO4-P/L, within 430 bed volumes, with a capacity of 4.1 mg PO4-P/g resin. To manage the regenerant (NaOH 2%) efficiently, this was reused up to 8 times, reaching 785 mg PO4-P/L, but the adsorption capacity was compromised, and it decreased to 1.5 mg PO4-P/g resin. By adding calcium hydroxide to the saturated NaOH, 95% of the PO4-P was recovered as hydroxyapatite, and at the same time the regeneration effectiveness was re-established, as <0.3 mg PO4-P/L was reached again in the effluent. The treated NaOH was reused as regenerant solution, ensuring high effluent quality of <0.2 mg PO4-P/L. This study confirmed the capability of HAIX technology to remove and recover PO4-P from wastewater offering a solution which ensures both a high effluent quality and a circular economy approach.en_UK
dc.identifier.citationGuida S, Rubertelli G, Jefferson B, Soares A. (2021) Demonstration of ion exchange technology for phosphorus removal and recovery from municipal wastewater. Chemical Engineering Journal, Volume 420, Part 1, September 2021, Article number 129913en_UK
dc.identifier.issn1385-8947
dc.identifier.urihttps://doi.org/10.1016/j.cej.2021.129913
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/16621
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.subjectresource recoveryen_UK
dc.subjectcircular economyen_UK
dc.subjectregenerant managementen_UK
dc.subjection exchangeen_UK
dc.subjectPhosphorus removalen_UK
dc.titleDemonstration of ion exchange technology for phosphorus removal and recovery from municipal wastewateren_UK
dc.typeArticleen_UK

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