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Adsorption of Ni2+, Cd2+, PO4 3- and NO3 - from aqueous solutions by nanostructured microfibrillated cellulose modified with carbonated hydroxyapatite
Lappeenranta University of Technology, Finland.
Lappeenranta University of Technology, Finland.
Mälardalen University, School of Business, Society and Engineering, Future Energy Center.ORCID iD: 0000-0003-0231-564X
University of Minnesota, United States.
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2014 (English)In: Chemical Engineering Journal, ISSN 1385-8947, Vol. 252, p. 64-74Article in journal (Refereed) Published
Abstract [en]

The adsorption of Ni2+, Cd2+, PO4 3- and NO3 - by carbonated hydroxyapatite (CHA) modified microfibrillated cellulose (MFC) was studied in the aqueous solution. The modified adsorbent was characterized using elemental analysis, FTIR, SEM and EDAX analysis. The adsorption studies were conducted in batch mode. The effects of pH, contact time, the concentration of metals and the regeneration efficiency were studied. The removal of Ni2+, Cd2+, PO4 3- and NO3 - was not pH dependent. The maximum removal capacities of the CHA/MFC adsorbent for Ni2+, Cd2+, PO4 3- and NO3 - were 2.021, 1.224, 0.843 and 0.209mmol/g, respectively. The Langmuir and Sips models were representative to simulate adsorption isotherms. The results of adsorption kinetic indicate that adsorption was very fast for all studied compounds.

Place, publisher, year, edition, pages
2014. Vol. 252, p. 64-74
Keywords [en]
Adsorption, Carbonated hydroxyapatite (CHA), Isotherms, Nanocellulose, Water treatment
National Category
Engineering and Technology Natural Sciences
Identifiers
URN: urn:nbn:se:mdh:diva-25228DOI: 10.1016/j.cej.2014.04.101ISI: 000339601000009Scopus ID: 2-s2.0-84901198503OAI: oai:DiVA.org:mdh-25228DiVA, id: diva2:724768
Available from: 2014-06-13 Created: 2014-06-13 Last updated: 2016-05-13Bibliographically approved

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Johansson Westholm, Lena

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CiteExportLink to record
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Citation style
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