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- W2039698520 abstract "Research Article| February 01 2008 Adsorptive removal of manganese(II) from the aqueous phase using iron oxide coated sand R. Buamah; R. Buamah 1Water Supply and Environmental Sanitation, Dept. of Civil Engineering, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana Tel.: +31(0)15 2151715 or +233(0)51 60235 Fax: +31(0)15 2122921 or +(0)51 60235; E-mail: r.buamah@unesco-ihe.org Search for other works by this author on: This Site PubMed Google Scholar B. Petrusevski; B. Petrusevski 2UNESCO-The Institute for Water Education, Delft, P.O. Box 3015, 2601, DA Delft, The Netherlands Search for other works by this author on: This Site PubMed Google Scholar J. C. Schippers J. C. Schippers 2UNESCO-The Institute for Water Education, Delft, P.O. Box 3015, 2601, DA Delft, The Netherlands Search for other works by this author on: This Site PubMed Google Scholar Journal of Water Supply: Research and Technology-Aqua (2008) 57 (1): 1–11. https://doi.org/10.2166/aqua.2008.078 Article history Received: October 04 2006 Accepted: June 25 2007 Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Cite Icon Cite Permissions Search Site Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAll JournalsThis Journal Search Advanced Search Citation R. Buamah, B. Petrusevski, J. C. Schippers; Adsorptive removal of manganese(II) from the aqueous phase using iron oxide coated sand. Journal of Water Supply: Research and Technology-Aqua 1 February 2008; 57 (1): 1–11. doi: https://doi.org/10.2166/aqua.2008.078 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex Iron oxide coated sand (IOCS) is a potential adsorbent for metallic ions, e.g. arsenic, lead, manganese etc., however the effect of process conditions and the mechanism of its adsorption of Mn(II) have not been thoroughly investigated. This study determined the capacity, rate, mechanisms involved and the effect of process conditions on the adsorption of Mn(II) onto IOCS using laboratory scale batch reactors with modeled water. Alkalinity and pH values of 8 and higher markedly affected the solubility of Mn(II) that is governed by manganese carbonate; solubility is very limited (1–2 mg/L or lower) even at low alkalinity (60 ppm).The IOCS demonstrated an increasing adsorption capacity ('K' values: 4.73–147) of Mn(II) from pH values 6 to 8. For the initial short term, comparable adsorption capacity was found at pH 6 under both oxic and anoxic conditions. This indicates that no significant quantities of adsorbed Mn(II) were oxidized at pH 6 to form extra capacity within that period.Kinetic studies using the linear driving force, Lagergren and potential driving second order kinetic (PDSOK) models revealed that the rate of manganese(II) adsorption onto aggregate IOCS declines after the initial phase likely due to the saturation of easily accessible adsorption capacities on grain surface and/or pH drop in the pores of the IOCS grains due to Mn(II) adsorption. The changing adsorption rate constants prevented the equilibrium concentration being predicted with the applied models. adorption, iron oxide coated sand, manganese(II) This content is only available as a PDF. © IWA Publishing 2008 You do not currently have access to this content." @default.
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- W2039698520 title "Adsorptive removal of manganese(II) from the aqueous phase using iron oxide coated sand" @default.
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