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dc.contributor.authorKumar, Prashanth Suresh
dc.contributor.authorKorving, Leon
dc.contributor.authorKeesman, Karel J.
dc.contributor.authorvan Loosdrecht, Mark C. M.
dc.contributor.authorWitkamp, Geert Jan
dc.date.accessioned2021-07-07T07:43:05Z
dc.date.available2021-07-07T07:43:05Z
dc.date.issued2019
dc.identifier.citationSuresh Kumar, P., Korving, L., Keesman, K. J., van Loosdrecht, M. C. M., & Witkamp, G.-J. (2019). Effect of pore size distribution and particle size of porous metal oxides on phosphate adsorption capacity and kinetics. Chemical Engineering Journal, 358, 160–169. doi:10.1016/j.cej.2018.09.202
dc.identifier.issn1873-3212
dc.identifier.issn1385-8947
dc.identifier.doi10.1016/j.cej.2018.09.202
dc.identifier.urihttp://hdl.handle.net/10754/670050
dc.description.abstractPhosphate is a vital nutrient but its presence in surface waters even at very low concentrations can lead to eutrophication. Adsorption is often suggested as a step for reducing phosphate down to very low concentrations. Porous metal oxides can be used as granular adsorbents that have a high surface area and hence a high adsorption capacity. But from a practical point of view, these adsorbents also need to have good adsorption kinetics. The surface area of such adsorbents comes from pores of varying pore size and the pore size distribution (PSD) of the adsorbents can affect the phosphate adsorption kinetics. In this study, the PSD of 4 different adsorbents was correlated with their phosphate adsorption kinetics. The adsorbents based on iron and aluminium (hydr)oxide were grinded and the adsorption performance was studied as a function of their particle size. This was done to identify diffusion limitations due to the PSD of the adsorbents. The phosphate adsorption kinetics were similar for small particles of all the adsorbents. For larger particles, the adsorbents having pores larger than 10 nm (FSP and DD6) showed faster adsorption than adsorbents with smaller pores (GEH and CFH). Even though micropores (pores < 2 nm) contributed to a higher portion of the adsorbent surface area, pores bigger than 10 nm were needed to increase the rate of adsorption.
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 Ministryof Economic Affairs, the European Union Regional Development Fund,the Province of Fryslân, the City of Leeuwarden and the EZ/Kompasprogram of the“Samenwerkingsverband Noord-Nederland”. We thankthe participants of the research theme“Phosphate Recovery”for theirfinancial support and helpful discussions.
dc.publisherElsevier BV
dc.relation.urlhttps://linkinghub.elsevier.com/retrieve/pii/S1385894718319193
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in CHEMICAL ENGINEERING JOURNAL. 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 CHEMICAL ENGINEERING JOURNAL, [358, , (2019)] DOI: 10.1016/j.cej.2018.09.202 . © 2019. 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.subjectParticle size
dc.subjectPore size distribution
dc.subjectAdsorption kinetics
dc.subjectDiffusion
dc.subjectPorous metal oxide
dc.titleEffect of pore size distribution and particle size of porous metal oxides on phosphate adsorption capacity and kinetics
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.journalCHEMICAL ENGINEERING JOURNAL
dc.identifier.wosutWOS:000450105700016
dc.eprint.versionPre-print
dc.contributor.institutionWetsus, European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9, 8911 MA, Leeuwarden, The Netherlands
dc.contributor.institutionDepartment of Biotechnology, Applied Sciences, Delft University of Technology, Building 58, Van der Maasweg 9, 2629 HZ Delft, The Netherlands
dc.contributor.institutionBiobased Chemistry and Technology, Wageningen University, Bornse Weilanden 9, 6708 WG, Wageningen, The Netherlands
dc.identifier.volume358
dc.identifier.pages160-169
kaust.personWitkamp, Geert Jan


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