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dc.contributor.authorLi, Chenxien
dc.date2008-01-31 16:32:28.051
dc.date2008-01-31 22:37:34.381
dc.date.accessioned2008-02-01T20:27:31Z
dc.date.available2008-02-01T20:27:31Z
dc.date.issued2008-02-01T20:27:31Z
dc.identifier.urihttp://hdl.handle.net/1974/1017
dc.descriptionThesis (Master, Civil Engineering) -- Queen's University, 2008-01-31 22:37:34.381en
dc.description.abstractIn this project, three separate experiments were conducted to assess heavy metal removal from metal aqueous solutions and synthetic landfill leachate by adsorption using low-cost natural adsorbents. Fundamental batch investigations indicated that the 4.0-4.75 mm crushed mollusk shells and the Sphagnum peat moss were the best adsorbents for cadmium and nickel removal, respectively. Peat moss was also found to have the highest adsorption capacities for manganese and cobalt adsorption. The adsorption capacities of the peat moss and crushed mollusk shells used as natural adsorbents for the adsorption of cadmium and nickel from binary aqueous solutions in fixed-bed columns under continuous flow conditions were investigated. The life expectancy of each adsorbent in the fixed-bed columns was also assessed for different hydraulic loading rates. The flow rate of 1.5 mL/min (surface loading of 27.52 cm3/cm2•day) and bed depth of 15 cm were identified as the better operational conditions from the column testing. The results indicated that 47.9% and 42.7% cadmium and nickel removal efficiencies could obtained under these operational conditions, respectively. Finally, the peat moss and the crushed mollusk shells were packed in bench-scale down-flow fixed-bed columns to evaluate their adsorption capacities as natural low-cost adsorbents for the removal of heavy metals from aerated and non-aerated synthetic landfill leachate. The flow rate applied in this operation was 1.5 mL/min (surface loading of 27.52 cm3/cm2•day). Peat was found to have the best adsorption capacities in columns treating aerated synthetic leachate for cadmium (78.6%) and nickel (83.8%) removal efficiencies.en
dc.format.extent5000314 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoengen
dc.relation.ispartofseriesCanadian thesesen
dc.rightsThis publication is made available by the authority of the copyright owner solely for the purpose of private study and research and may not be copied or reproduced except as permitted by the copyright laws without written authority from the copyright owner.en
dc.subjectHeavy Metalen
dc.subjectAdsorptionen
dc.subjectSynthetic Landfill Leachateen
dc.subjectLow-Cost Natural Adsorbentsen
dc.titleBatch and Bench-Scale Fixed-Bed Column Evaluations of Heavy Metal Removals From Aqueous Solutions and Synthetic Landfill Leachate Using Low-Cost Natural Adsorbentsen
dc.typethesisen
dc.description.degreeM.Sc.en
dc.contributor.supervisorChampagne, Pascaleen
dc.contributor.departmentCivil Engineeringen
dc.degree.grantorQueen's University at Kingstonen


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