Дисертації з теми "Soil remediation"
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Mewett, John University of Ballarat. "Electrokinetic remediation of arsenic contaminated soils." University of Ballarat, 2005. http://archimedes.ballarat.edu.au:8080/vital/access/HandleResolver/1959.17/12797.
Masters of Applied Science
Mewett, John. "Electrokinetic remediation of arsenic contaminated soils." Thesis, University of Ballarat, 2005. http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/68354.
Masters of Applied Science
Mewett, John. "Electrokinetic remediation of arsenic contaminated soils." University of Ballarat, 2005. http://archimedes.ballarat.edu.au:8080/vital/access/HandleResolver/1959.17/14633.
Masters of Applied Science
Eftekhari, Farzad. "Foam-surfactant technology in soil remediation." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0018/MQ54314.pdf.
Spracklin, Katherine Helen. "The remediation of industrially contaminated soil." Thesis, University of Newcastle Upon Tyne, 1992. http://hdl.handle.net/10443/656.
Niarchos, Georgios. "Electrodialytic Remediation of PFAS-Contaminated Soil." Thesis, KTH, Vatten- och miljöteknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-239878.
Per- och polyfluoralkylsubstanser (PFAS) är en grupp av antropogena alifatiska föreningar, allmäntkända för sin miljöpåverkan och toxicitet för levande varelser. Medan de är allestädes närvarande imiljön har intresset varit inriktat på förorenad mark, som kan fungera som primär mottagare och källatill grundvattenförorening. Elektrokinetisk teknik är baserad på jonernas rörelse under effekten av ettelektriskt fält. Detta kan vara en lovande lösningsmedel, eftersom PFAS är vanligtvis närvarande i sinanjoniska form. Föroreningarna kan sedan koncentreras mot anoden, vilket reducerar en plums volymoch eventuellt extraherar ämnena från jorden. Det preliminära målet med den föreliggande studien varatt utvärdera potentialen att använda elektrodialys för sanering av PFAS-förorenad jord för förstagången. Experimenten kördes med naturliga förorenade jordprover, härrörande från enbrandbekämpningsplats vid Arlanda flygplats, och i Kallinge, Sverige, samt i konstgjort spikedsol.Elektroder placerades i elektrolytfyllda kamrar och separerades av jorden med jonbytesmembran förpH-kontroll. Totalt genomfördes fem experiment. Två olika inställningar testades, en typisk 3-facksEKR-cell och en 2-facksinställning, vilket möjliggör pH-ökning och underlättar PFAS-desorption. Tvåolika strömtätheter testades; 0,19 mA cm-2 och 0,38 mA cm-2. Efter tjugo dagar skärs jorden i tio delari längdriktningen och trippelprover analyserades för PFAS-koncentrationer, med HPLC-MS / MS.Sexton av de tjugosex screenade PFAS: erna detekterades över MDL i de naturliga markproverna.Majoriteten av de upptäckta PFAS-värdena visade en positiv trend av elektromigration mot anodenunder båda strömtätheten, varvid endast längre kedjiga föreningar (c> 8) var immobila. Detta kanhänföras till den starkare sorptionspotentialen hos långkedjiga PFAS-molekyler, vilket har rapporteratsi tidigare sorptionsstudier. Massbalansfördelning för ett experiment med hög strömtäthet (0,38 mA cm-2) visade att 73,2% av Σ26PFAS koncentrerades mot anoden, med 59% vid jorden närmare anoden, 5,7%vid anjonbytarmembranet och 8,5% vid anolyten. Det visade också högre rörlighet för kortkedjigamolekyler (c≤6), eftersom de var de enda föreningarna som skulle extraheras från jord och koncentrerasi anolyten. Högre strömtätheter var inte direkt korrelerade med högre elektromigrationshastigheter,avseende bristen på massbalansdata för experimenten med låg strömtäthet. Oavsett elektrodialys kandet vara ett lönsamt alternativ för PFAS-markrening och ytterligare forskning för att uppmuntraförståelsen för migrationsmekanismen, liksom kombinationen med andra behandlingsmetoder främjas.
Anunike, Chidinma. "Deployment of calcium polysulphide for the remediation of chromite ore processing residue." Thesis, University of Aberdeen, 2015. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=227912.
Walter, David J. "Soil enhancement by fluid injection for in situ treatment of contaminated soil." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0008/NQ52695.pdf.
Williamson, Derek Guthrie. "Relating release and biodegradation kinetics in soils containing aged mixtures of hydrocarbons /." Digital version accessible at:, 1998. http://wwwlib.umi.com/cr/utexas/main.
McNear, David H. "The plant soil interface nickel bioavailability and the mechanisms of plant hyperaccumulation /." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file [ ] Mb., 234 p, 2006. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pqdiss&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:3205442.
Kamari, Azlan. "Chitosans as soil amendments for the remediation of metal contaminated soil." Thesis, University of Glasgow, 2011. http://theses.gla.ac.uk/2595/.
Choi, Chung-ming. "Land contamination and its remediation methods : a case study in Hong Kong /." Hong Kong : University of Hong Kong, 1995. http://sunzi.lib.hku.hk/hkuto/record.jsp?B14709156.
Tsang, Chiu Wa. "Nonequilibrium transport of heavy metals in soils and its influence on soil remediation /." View abstract or full-text, 2006. http://library.ust.hk/cgi/db/thesis.pl?CIVL%202006%20TSANG.
Green, Russell A. "Energy-Based Evaluation and Remediation of Liquefiable Soils." Diss., Virginia Tech, 2001. http://scholar.lib.vt.edu/theses/available/etd-08132001-170900.
Md, Som Amelia. "The impact of biochar on soil processes and its potential in soil remediation." Thesis, University of Cambridge, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.648221.
Sandhu, Harjinder. "Sorption of lead and arsenic on soil components and effectiveness of phosphates for remediating lead and arsenic contaminated soils." Morgantown, W. Va. : [West Virginia University Libraries], 2001. http://etd.wvu.edu/templates/showETD.cfm?recnum=1923.
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Schmidt, Monica A. "Genetically-engineered Populus hybrids and metalliferous soil remediation." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape7/PQDD_0019/NQ46418.pdf.
Williamson, Kimberley. "Soil - vegetation based remediation studies of landfill leachate." Thesis, Bangor University, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.393608.
Schoen, William R. "Steam remediation of contaminated soil : a simulation study." Thesis, Monterey, California. Naval Postgraduate School, 1994. http://hdl.handle.net/10945/26267.
Orueetxebarria, Mikel. "Remediation of heavy metal contaminated soil using bonemeal." Thesis, University of Nottingham, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.417229.
Gidudu, Brian. "Biosurfactant Enhanced Bioelectrokinetic Remediation of Petrochemical Contaminated Soil." Diss., University of Pretoria, 2019. http://hdl.handle.net/2263/79238.
Dissertation (MEng)--University of Pretoria, 2019.
Environmental Engineering
MEng
Unrestricted
Malheiro, Catarina Correia de Lemos. "Biochar effects on the soil quality and remediation." Master's thesis, Universidade de Aveiro, 2016. http://hdl.handle.net/10773/17692.
A contaminação dos solos é um problema mundial que necessita de uma resolução. Várias técnicas foram e têm vindo a ser desenvolvidas para verificar a sua eficácia em remover contaminantes orgânicos e inorgânicos dos solos. O biochar é um material carbonáceo que, além de ser um produto de reestruturação de solos, pode imobilizar compostos químicos devido à sua grande área de superfície específica reativa, tornando-os não disponíveis para o biota do solo. Assim, o objetivo deste estudo foi testar a capacidade do biochar em imobilizar dimetoato em solos agrícolas, e, deste modo, diminuir a sua toxicidade para os organismos do solo. Para testar esta hipótese, duas taxas de biochar – 2.5% e 5% (m/m) – e dois organismos modelo – o colêmbolo Folsomia candida e a planta Brassica rapa – foram escolhidos para estudar a imobilização do pesticida pelo biochar através da avaliação das alterações na toxicidade do dimetoato aquando da inclusão do biochar no solo. Como complemento, análises químicas foram, também, realizadas ao solo e à água dos poros do solo para averiguar se a concentração química diminuiu. No teste de reprodução com colêmbolos, a produção de juvenis e a taxa de sobrevivência foram afetados positivamente com o tratamento do biochar, independentemente da sua percentagem no solo. Em relação ao teste com as plantas, parâmetros como o comprimento e o peso fresco das partes aéreas destas foram, também, afetadas positivamente com a adição do biochar; contudo, a sua influência foi menos eficiente porque houve uma curva dose-resposta para o pesticida. Com estes resultados, conclui-se que o biochar pode diminuir os efeitos induzidos pelo dimetoato, ao diminuir a sua biodisponibilidade para a fauna e flora do solo.
Soil contamination is a worldwide problem urging for resolution. Several techniques are being developed and upgraded to see their efficacy in removing organic and inorganic contaminants from soils. Biochar is a carbonaceous material that, aside from being a soil amendment, can immobilize chemical compounds due to a large and reactive specific surface area, potentially turning them unavailable for the soil biota. Therefore, the aim of this study was to test the biochar’s capacity to immobilize dimethoate in agricultural soils and, therefore, decrease the toxicity to soil organisms. To test this hypothesis, two biochar rates – 2.5% and 5% (w/w) - and two standardized organisms - the collembolan Folsomia candida and the plant Brassica rapa - were chosen to assess pesticide immobilization by biochar by evaluating changes in dimethoate toxicity upon soil amendment. As a complement, chemical analyses were also performed on the soil and on the soil’s pore water to check if the chemical concentration decreased. In the reproduction test with collembolans, the offspring production and the survival rate were affected positively with the biochar treatment, independent of the percentage of biochar in soil amendment. For the germination test, endpoints such as length and fresh weight of the aerial part of the plants were also affected positively with biochar addition; however, biochar’s influence was less efficient because there was still a dose-response curve for dimethoate observed. With these results, we can conclude that biochar can alleviate dimethoate pollution, by decreasing the bioavailability to soil fauna and flora.
Tejowulan, Raden Sri. "Remediation of trace metal contaminated soils." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0030/NQ64679.pdf.
Zhang, Weihua. "Chemical-enhanced washing for remediation of heavy metal- and petroleum hydrocarbon-contaminated soils /." View abstract or full-text, 2006. http://library.ust.hk/cgi/db/thesis.pl?CIVL%202006%20ZHANGW.
Malgaretti, Maura. "Decabromodiphenyl ether fate in soil system : sorption in soil matrices and new perspective for soil remediation." Thesis, University of Strathclyde, 2016. http://digitool.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=27554.
Dzenitis, John M. "Soil chemistry effects and flow prediction in remediation of soils by electric fields." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/10973.
Loverde, Laura Elizabeth. "Effect of rate-limited interfacial tension reductions on the displacement of residual NAPLs during surfactant flushing." Thesis, Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/19280.
Welker, Andrea Louise. "In-situ remediation of contaminated soils using prefabricated vertical drains /." Digital version accessible at:, 1998. http://wwwlib.umi.com/cr/utexas/main.
Nardone, Marco. "Remediation of soil and groundwater by Vacuum Enhanced Recovery." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0011/MQ52619.pdf.
Yuan, Tao 1968. "Remediation of a soil contaminated with polyaromatic hydrocarbons (PAHs)." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=111845.
Catalytic hydrogenation of naphthalene, acenaphthylene, ancenaphthene, anthracene, phenanthrene, chrysene and benzo[a]pyrene over alumina supported palladium (5% Pd0/gammaAl2O3) commercial catalyst were investigated in either a batch reaction mode or a continuous reaction system in H2-scCO2 (∼5% v/v). The hydrocarbon compounds were efficiently reduced to their corresponding fully saturated polycyclic hydrocarbon homologs with mild conditions of temperature (90°C) and pressure (60 psi H2 or 3000 psi H2-scCO2). The bacterial reverse mutation assay demonstrated that both the fully and partially hydrogenated products of chrysene and benzo[a]pyrene were devoid of mutagenic activity.
A laboratory study was conducted on the surfactant-assisted mobilization of PAH compounds combined with reagent regeneration and detoxification steps to generate innocuous products. Five minutes of ultrasonication of field contaminated soil with a 3% (w/v) surfactant suspension mobilized appreciable quantities of all PAH compounds. Formulating the Brij 98 surfactant in 0.1 M phosphate buffer (pH 8.0) mobilized the largest quantities of PAH compounds and the recovery of surfactant (>90%) but soil residues exceeded permissible maxima for five- and six-ring analytes. Five successive washes were required to reduce the residual fraction to permissible levels. The mobilized PAH compounds were then detoxified at line by catalytic hydrogenation in a 5% H2-scCO2 (v/v) atmosphere.
New palladium hydrogenation catalysts were fabricated in the laboratory with specific processes on various supports. The hydrogenation of phenanthrene and benzo[a]pyrene in a fixed bed micro reactor demonstrated that the catalyst that was fabricated from organosoluble precursor loaded on aluminum oxide (2.5% Pd0/gammaAl2O3) was four times more efficient than the commercial catalyst that was used for PAH hydrogenations.
Tsang, Jennifer Arr, and 曾昭雅. "Dioxin contamination in soil: remediation technology and environmental management." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2003. http://hub.hku.hk/bib/B31255644.
O'Brien, Peter. "Soil Function Following Remediation Using Ex Situ Thermal Desorption." Diss., North Dakota State University, 2017. https://hdl.handle.net/10365/26739.
Burghardt, Julie Marie. "Laboratory study evaluating thermal remediation of tetrachloroethylene impacted soil." Thesis, Kingston, Ont. : [s.n.], 2007. http://hdl.handle.net/1974/967.
Ahmad, Mushtaque. "Persulfate activation by major soil minerals." Pullman, Wash. : Washington State University, 2008. http://www.dissertations.wsu.edu/Thesis/Fall2008/m_ahmad_032409.pdf.
Title from PDF title page (viewed on Apr. 17, 2009). "Department of Civil and Environmental Engineering." Includes bibliographical references (p. 15-18).
Steele, Mark. "Ex-situ remediation of a metal-contaminated superfund soil using selective extractants." Virtual Press, 1997. http://liblink.bsu.edu/uhtbin/catkey/1048379.
Department of Natural Resources and Environmental Management
Merker, Marissa C. "Persulfate transport in two low-permeability soils." Pullman, Wash. : Washington State University, 2010. http://www.dissertations.wsu.edu/Thesis/Summer2010/M_Merker_061610.pdf.
Title from PDF title page (viewed on July 23, 2010). "Department of Civil and Environmental Engineering." Includes bibliographical references (p. 15-17).
Kogbara, Reginald Baribor. "Process envelopes for and biodegradation within stabilised/solidified contaminated soils." Thesis, University of Cambridge, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.609546.
Kostarelos, Konstantinos. "Surfactant enhanced aquifer remediation at neutral buoyancy /." Digital version accessible at:, 1998. http://wwwlib.umi.com/cr/utexas/main.
Wan, Cheung Kuen. "Composting as a bioremediation technology for remediation of PAHs contaminated soil." HKBU Institutional Repository, 2000. http://repository.hkbu.edu.hk/etd_ra/219.
Miraglio, Michael Andrew. "Base-activated persulfate treatment of contaminated soils with pH drift from alkaline to circumneutral." Pullman, Wash. : Washington State University, 2009. http://www.dissertations.wsu.edu/Thesis/Spring2009/M_Miraglio_040809.pdf.
Title from PDF title page (viewed on May 21, 2009). "Department of Civil and Environmental Engineering." Includes bibliographical references (p. 14-15).
Ogunkeyede, Akinyemi Olufemi. "Conventional and microwave pyrolysis remediation of crude oil contaminated soil." Thesis, University of Nottingham, 2016. http://eprints.nottingham.ac.uk/35190/.
Penn, Madeleine Lisa Mary. "Electrokinetic soil remediation : effects of pH, temperature and chemical reactions." Thesis, University of Cambridge, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.266331.
Arwidsson, Zandra. "Organic complexing agents for remediation of heavy metal contaminated soil /." Örebro : Örebro University, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-7913.
Rana, Nadeem Ahmed. "A laboratory study on bioremediation of a diesel-contaminated fine-textured soil." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0001/MQ44253.pdf.
Punt, Monique M. "Microwave-enhanced extraction of organic contaminants from soil." Thesis, McGill University, 1997. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=27393.
The dielectric properties of several mixtures of acetone and hexane over a temperature range from 25$ sp circ$C to 50$ sp circ$C were measured. The dielectric constants of these mixtures were found not to vary significantly with temperature.
A study of microwave absorption by heterogeneous mixtures showed that adding a solid material to a low dielectric constant solvent resulted in energy being preferentially absorbed by the solid.
The results of laboratory extraction tests showed that the ability of the MAP technique to extract contaminants was affected by the organic matter content of soil, particularly in the presence of water.
Use of a closed-vessel system yielded a 60% to 175% increase in the extraction of PAHs from a low organic-content soil relative to that achieved in an open-vessel system. (Abstract shortened by UMI.)
Fallgren, Paul Harold. "Parameter-based models estimating microbial hydrocarbon-degrading activity in a diesel-contaminated soil." Laramie, Wyo. : University of Wyoming, 2007. http://proquest.umi.com/pqdweb?did=1320951271&sid=1&Fmt=2&clientId=18949&RQT=309&VName=PQD.
Yu, Miao. "Effect of persulfate formulations on soil permeability." Pullman, Wash. : Washington State University, 2010. http://www.dissertations.wsu.edu/Thesis/Summer2010/m_yu_061410.pdf.
Title from PDF title page (viewed on July 30, 2010). "Department of Civil and Environmental Engineering." Includes bibliographical references (p. 13-14).
Boxill, Lois E. C. "Foundation remediation of existing structures using ground densification methods." Thesis, Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/21792.
Bassi, Raman. "A laboratory study to remediate a metal-contaminated soil /." Thesis, McGill University, 2000. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=36751.
Finally, a large-scale experiment involving soil columns (height = 1.0 m; internal diameter = 0.2 m) was carried out to develop an in situ soil flushing system to remediate the metal-contaminated soil. Citric acid was supplied into the soil columns through a subsurface irrigation system. This process resulted in an overall extraction of Zn, Cu, Cd, and Pb ions from the soil columns at 83.27%, 1.47%, 16.70%, and 26.55%, respectively. Results obtained in different experimental protocols suggested that continuous flushing of the soil is a suitable method for extracting metal ions from the contaminated soil using citric acid.
The metal-rich leachate was effectively treated with chitosan flakes. Results indicate that for 0.1 M citric acid leachate containing 0.06, 0.02, 0.003, and 5.87 mumoles ml-1 of Zn, Cu, Cd, and Pb, respectively, about 20 g of chitosan would be sufficient to remove about 50% of the contaminants from one liter of leachate in 6 h. Various batch experiments involving pure solutions of metal ions as well as the metal-rich leachate were conducted to establish the metal adsorption properties of chitosan under various physico-chemical conditions. The controlled parameters were the amount of chitosan, reaction time with and without shaking, and the pH of the solution. The sorption of metal ions from pure metal solutions and the leachate was not improved by the agitation, and the maximum adsorption of metal ions onto chitosan flakes occurred at pH 6.0. Sorption equilibrium studies were also conducted with a constant sorbent weight and varying initial concentration of metal ions. The experimental data of adsorption from the solutions, containing metal ions, were found to correlate well with the Langmuir isotherm equation.
Dominguez, Elena. "Phytoremediation of soils contaminated by used motor oil." Virtual Press, 2002. http://liblink.bsu.edu/uhtbin/catkey/1246470.