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dc.contributor.advisorDeng, Baolineng
dc.contributor.authorVasireddy, Dhanarekhaeng
dc.date.issued2006eng
dc.date.submitted2005 Falleng
dc.descriptionThe entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file.eng
dc.descriptionTitle from title screen of research.pdf file viewed on (May 20, 2007)eng
dc.descriptionIncludes bibliographical references.eng
dc.descriptionVita.eng
dc.descriptionThesis (M.S.) University of Missouri-Columbia 2006.eng
dc.descriptionDissertations, Academic -- University of Missouri--Columbia -- Civil engineering.eng
dc.description.abstractTo develop an inexpensive adsorbent, suitable for arsenic removal from drinking water, iron-chitosan based sorbents were selected. Chitosan is a biopolymer derived from chitin, a polysaccharide and is available commercially in the form of flakes. To be used in an adsorption system, chitosan should be made in the form of a bead. In this process, two types of beads were prepared 1) Iron-chitosan (CFeN), and 2) Iron-chitosan coated perlite (CFeN+Perlite). These beads were characterized using Scanning Electron Microscopy (SEM), Energy Dispersive x-ray Spectrometry (EDS) and X-ray Photoelectron Spectroscopy (XPS). The adsorption isotherm studies of arsenic on CFeN and CFeN+Perlite beads were determined using Langmuir model. The effect of pH and competing ions on arsenic removal for CFeN was determined. For CFeN adsorbent, high removals of arsenate were obtained at pH range 5.8-7.8, with maximum removal occurring around pH 5.8. Arsenite removal is also efficient with the maximum removal occurring around pH 8. From the isotherm studies, it was found that the maximum adsorption of arsenate and arsenite onto iron-chitosan coated perlite was almost half that of iron-chitosan.eng
dc.identifier.merlin.b58539050eng
dc.identifier.oclc132692601eng
dc.identifier.otherVasireddyD-032207-T3142eng
dc.identifier.urihttp://hdl.handle.net/10355/4287eng
dc.publisherUniversity of Missouri--Columbiaeng
dc.relation.ispartof2005 Freely available theses (MU)eng
dc.relation.ispartofcommunityUniversity of Missouri-Columbia. Graduate School. Theses and Dissertations. Theses. 2005 Theseseng
dc.subject.lcshWater -- Purification -- Adsorptioneng
dc.subject.lcshWater -- Purification -- Arsenic removaleng
dc.subject.lcshChitosaneng
dc.titleArsenic adsorption onto iron-chitosan composite from drinking watereng
dc.typeThesiseng
thesis.degree.disciplineCivil engineering (MU)eng
thesis.degree.grantorUniversity of Missouri--Columbiaeng
thesis.degree.levelMasterseng
thesis.degree.nameM.S.eng


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