Co-transport of Carboxyl-functionalized Multi-walled Carbon Nanotubes and Kaolinite in Saturated Porous Media

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dc.contributor.advisorLi, Qilin
dc.contributor.committeeMemberAlvarez, Pedro J
dc.contributor.committeeMemberTomson, Mason B
dc.creatorWang, Tianxiao
dc.date.accessioned2016-02-05T15:20:56Z
dc.date.available2016-02-05T15:20:56Z
dc.date.created2015-05
dc.date.issued2015-04-22
dc.date.submittedMay 2015
dc.date.updated2016-02-05T15:20:56Z
dc.description.abstractCo-transport behavior of carboxylated multiwalled carbon nanotubes (COOH-MWCNTs) and kaolinite in various solution ionic strength (IS) and pH were investigated. Results on electrophoretic mobility of CNT, kaolinite and quartz sand as well as particle size of CNT-kaolinite mixture, CNT alone and kaolinite alone were consistent with the DLVO theory. Large particle sizes of kaolinite-CNT mixture revealed potential heteroaggregations especially at 1 mM NaCl, pH=3 and 10 mM NaCl and pH=9. Deposition of CNT was enhanced during the co-transport at 1mM NaCl and pH=3 due to the low mobility of CNT-kaolinite heteroaggregate while decreased at pH=5 in 1 mM NaCl, pH=9 in 10 mM NaCl and pH=9 in 100 mM NaCl because of site blocking by kaolinite. Kaolinite mobility increased in the presence of CNT at pH=3 in 1 mM NaCl caused by site blocking and at pH=9 in 10 mM NaCl resulted from low single collector efficiency of large particles.
dc.format.mimetypeapplication/pdf
dc.identifier.citationWang, Tianxiao. "Co-transport of Carboxyl-functionalized Multi-walled Carbon Nanotubes and Kaolinite in Saturated Porous Media." (2015) Master’s Thesis, Rice University. <a href="https://hdl.handle.net/1911/88383">https://hdl.handle.net/1911/88383</a>.
dc.identifier.urihttps://hdl.handle.net/1911/88383
dc.language.isoeng
dc.rightsCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.
dc.subjectCo-transport
dc.subjectCNT
dc.subjectKaolinite
dc.titleCo-transport of Carboxyl-functionalized Multi-walled Carbon Nanotubes and Kaolinite in Saturated Porous Media
dc.typeThesis
dc.type.materialText
thesis.degree.departmentCivil and Environmental Engineering
thesis.degree.disciplineEngineering
thesis.degree.grantorRice University
thesis.degree.levelMasters
thesis.degree.nameMaster of Science
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