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dc.contributor.authorKumar, Prashanth Suresh
dc.contributor.authorEjerssa, Wondesen Workneh
dc.contributor.authorWegener, Carita Clarissa
dc.contributor.authorKorving, Leon
dc.contributor.authorDugulan, Achim Iulian
dc.contributor.authorTemmink, Hardy
dc.contributor.authorvan Loosdrecht, Mark C.M.
dc.contributor.authorWitkamp, Geert Jan
dc.date.accessioned2018-09-03T13:26:10Z
dc.date.available2018-09-03T13:26:10Z
dc.date.issued2018-08-20
dc.identifier.citationSuresh Kumar P, Ejerssa WW, Wegener CC, Korving L, Dugulan AI, et al. (2018) Understanding and improving the reusability of phosphate adsorbents for wastewater effluent polishing. Water Research 145: 365–374. Available: http://dx.doi.org/10.1016/j.watres.2018.08.040.
dc.identifier.issn0043-1354
dc.identifier.doi10.1016/j.watres.2018.08.040
dc.identifier.urihttp://hdl.handle.net/10754/628470
dc.description.abstractPhosphate is a vital nutrient for life but its discharge from wastewater effluents can lead to eutrophication. Adsorption can be used as effluent polishing step to reduce phosphate to very low concentrations. Adsorbent reusability is an important parameter to make the adsorption process economically feasible. This implies that the adsorbent can be regenerated and used over several cycles without appreciable performance decline. In the current study, we have studied the phosphate adsorption and reusability of commercial iron oxide based adsorbents for wastewater effluent. Effects of adsorbent properties like particle size, surface area, type of iron oxide, and effects of some competing ions were determined. Moreover the effects of regeneration methods, which include an alkaline desorption step and an acid wash step, were studied. It was found that reducing the adsorbent particle size increased the phosphate adsorption of porous adsorbents significantly. Amongst all the other parameters, calcium had the greatest influence on phosphate adsorption and adsorbent reusability. Phosphate adsorption was enhanced by co-adsorption of calcium, but calcium formed surface precipitates such as calcium carbonate. These surface precipitates affected the adsorbent reusability and needed to be removed by implementing an acid wash step. The insights from this study are useful in designing optimal regeneration procedures and improving the lifetime of phosphate adsorbents used for wastewater effluent polishing.
dc.description.sponsorshipThis work was performed in the TTIW-cooperation framework of Wetsus, European Centre Of Excellence For Sustainable Water Technology (www.wetsus.nl). Wetsus is funded by the Dutch Ministry of Economic Affairs, the European Union Regional Development Fund, the Province of Fryslân, the City of Leeuwarden and the EZ/Kompas program of the “Samenwerkingsverband Noord-Nederland”. We thank the participants of the research theme “Phosphate Recovery” for their financial support and helpful discussions.
dc.publisherElsevier BV
dc.relation.urlhttps://www.sciencedirect.com/science/article/pii/S0043135418306717
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Water Research. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Water Research, [, , (2018-08-20)] DOI: 10.1016/j.watres.2018.08.040 . © 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectPhosphate adsorption
dc.subjectWastewater effluent
dc.subjectRegeneration
dc.subjectReusability
dc.subjectSurface precipitation
dc.subjectCalcium adsorption
dc.titleUnderstanding and improving the reusability of phosphate adsorbents for wastewater effluent polishing
dc.typeArticle
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Division
dc.contributor.departmentEnvironmental Science and Engineering Program
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)
dc.identifier.journalWater Research
dc.eprint.versionPost-print
dc.contributor.institutionDepartment of Biotechnology, Applied Sciences, Delft University of Technology, Building 58, Van der Maasweg 9, 2629 HZ, Delft, The Netherlands
dc.contributor.institutionWetsus, European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9, 8911 MA, Leeuwarden, The Netherlands
dc.contributor.institutionChair for Mechanical Process Engineering / Water Technology, Faculty of Engineering, University Duisburg-Essen, Lotharstrasse 1, 47057 Duisburg, Germany
dc.contributor.institutionFundamental Aspects of Materials and Energy Group, Delft University of Technology, Mekelweg 15, 2629 JB, Delft, The Netherlands
dc.contributor.institutionSub-department of Environmental Technology, Wageningen University and Research, Bornse Weilanden 9, 6708 WG, Wageningen, The Netherlands
kaust.personWitkamp, Geert Jan
refterms.dateFOA2018-09-04T13:00:14Z
dc.date.published-online2018-08-20
dc.date.published-print2018-11


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