Carbon-60 nanoparticles: Adsorption and desorption of organic contaminants, and transport in soil

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dc.contributor.advisorTomson, Mason B.en_US
dc.creatorCheng, Xuekunen_US
dc.date.accessioned2018-12-03T18:32:50Zen_US
dc.date.available2018-12-03T18:32:50Zen_US
dc.date.issued2006en_US
dc.description.abstractC 60 is a new form of carbon with unique properties due to its small size. Since it has been predicted that C 60 will be manufactured by tons, there is no doubt that it will ultimately find their way to the environment. Because of the insolubility of C 60 in water, one might expect that it would not enter groundwater in great quantities. However, "nC 60 " (water-stable C 60 aggregates) can be formed in water by exchange of solvents, or simply by stirring, indicating that C 60 might be readily available in groundwater. Therefore it is necessary to investigate the transport of C 60 particles and their interactions with other environmental contaminants. The adsorption and desorption of naphthalene and 1,2-dichlorobenzene, two common organic contaminants, with nC 60 in water was investigated and sorption hysteresis was observed. Naphthalene adsorption-desorption with activated carbon particles and soil organic carbon was also conducted. Similar sorption hysteresis was observed. Experimental data were fitted with different sorption models. The Dual-Equilibrium desorption model fits experimental data well. Each DED model fitting parameter has similar values for all three forms of carbon, indicating the possibility to predict the carbonaceous nanomaterial-contaminant interactions from well known carbon materials. The transport of nC 60 through a soil column was characterized by flow-through apparatus. It was observed in the transport study that nC 60 have limited mobility in the soil column at typical groundwater velocity, but they were more mobile at higher velocities. The effect of adsorbed nC 60 on naphthalene is similar to that of soil organic carbon. This study provides useful information for the environmental risk assessment of C 60 fullerene.en_US
dc.format.extent185 ppen_US
dc.identifier.callnoTHESIS C.E. 2006 CHENGen_US
dc.identifier.citationCheng, Xuekun. "Carbon-60 nanoparticles: Adsorption and desorption of organic contaminants, and transport in soil." (2006) Diss., Rice University. <a href="https://hdl.handle.net/1911/103701">https://hdl.handle.net/1911/103701</a>.en_US
dc.identifier.digital305270093en_US
dc.identifier.urihttps://hdl.handle.net/1911/103701en_US
dc.language.isoengen_US
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.en_US
dc.subjectEnvironmental engineeringen_US
dc.subjectEnvironmental scienceen_US
dc.subjectHealth and environmental sciencesen_US
dc.subjectApplied sciencesen_US
dc.subjectCarbon-60 Naphthaleneen_US
dc.subjectOrganic contaminantsen_US
dc.subjectSoilen_US
dc.titleCarbon-60 nanoparticles: Adsorption and desorption of organic contaminants, and transport in soilen_US
dc.typeThesisen_US
dc.type.materialTexten_US
thesis.degree.departmentChemical and Biomolecular Engineeringen_US
thesis.degree.disciplineEngineeringen_US
thesis.degree.grantorRice Universityen_US
thesis.degree.levelDoctoralen_US
thesis.degree.nameDoctor of Philosophyen_US
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