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dc.contributor.advisorDeng, Baolinen
dc.contributor.authorVasireddy, Dhanarekhaen_US
dc.date.issued2006en_US
dc.date.submitted2005 Fallen
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.en_US
dc.descriptionTitle from title screen of research.pdf file viewed on (May 20, 2007)en_US
dc.descriptionIncludes bibliographical references.en_US
dc.descriptionVita.en_US
dc.descriptionThesis (M.S.) University of Missouri-Columbia 2006.en_US
dc.descriptionDissertations, Academic -- University of Missouri--Columbia -- Civil engineering.en_US
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.en_US
dc.identifier.merlin.b58539050en_US
dc.identifier.oclc132692601en_US
dc.identifier.otherVasireddyD-032207-T3142en_US
dc.identifier.urihttp://hdl.handle.net/10355/4287
dc.publisherUniversity of Missouri--Columbiaen_US
dc.relation.ispartof2005 Freely available theses (MU)en_US
dc.relation.ispartofcommunityUniversity of Missouri-Columbia. Graduate School. Theses and Dissertations. Theses. 2005 Theses
dc.subject.lcshWater -- Purification -- Adsorptionen_US
dc.subject.lcshWater -- Purification -- Arsenic removalen_US
dc.subject.lcshChitosanen_US
dc.titleArsenic adsorption onto iron-chitosan composite from drinking wateren_US
dc.typeThesisen_US
thesis.degree.disciplineCivil engineeringeng
thesis.degree.grantorUniversity of Missouri--Columbiaeng
thesis.degree.levelMastersen_US
thesis.degree.nameM.S.en_US


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