title: Carbon Nanotube Based Groundwater Remediation: The Case of Trichloroethylene.
abstract: Adsorption of chlorinated organic contaminants (COCs) on carbon nanotubes (CNTs) has been gaining ground as a remedial platform for groundwater treatment. Applications depend on our mechanistic understanding of COC adsorption on CNTs. This paper lays out the nature of competing interactions at play in hybrid, membrane, and pure CNT based systems and presents results with the perspective of existing gaps in design strategies. First, current remediation approaches to trichloroethylene (TCE), the most ubiquitous of the COCs, is presented along with examination of forces contributing to adsorption of analogous contaminants at the molecular level. Second, we present results on TCE adsorption and remediation on pure and hybrid CNT systems with a stress on the specific nature of substrate and molecular architecture that would contribute to competitive adsorption. The delineation of intermolecular interactions that contribute to efficient remediation is needed for custom, scalable field design of purification systems for a wide range of contaminants.
authors.affiliation: Department of Polymer Science, The University of Akron, Akron, OH 44325, USA. kcj4@uakron.edu.
authors.forename: Kshitij C
authors.initials: KC
authors.lastname: Jha
authors.affiliation: Department of Polymer Science, The University of Akron, Akron, OH 44325, USA. zl23@zips.uakron.edu.
authors.forename: Zhuonan
authors.initials: Z
authors.lastname: Liu
authors.affiliation: Center for Nanoscale Multifunctional Materials, Wright State University, Dayton, OH 45435, USA. vijwani.2@wright.edu.
authors.forename: Hema
authors.initials: H
authors.lastname: Vijwani
authors.affiliation: Center for Nanoscale Multifunctional Materials, Wright State University, Dayton, OH 45435, USA. nadagouda.mallikarjuna@epa.gov.
authors.forename: Mallikarjuna
authors.initials: M
authors.lastname: Nadagouda
authors.affiliation: Center for Nanoscale Multifunctional Materials, Wright State University, Dayton, OH 45435, USA. sharmila.mukhopadhyay@wright.edu.
authors.forename: Sharmila M
authors.initials: SM
authors.lastname: Mukhopadhyay
authors.affiliation: Department of Polymer Science, The University of Akron, Akron, OH 44325, USA. mtsige@uakron.edu.
authors.forename: Mesfin
authors.initials: M
authors.lastname: Tsige
mesh_terms: D000327:Adsorption; D002384:Catalysis; D052918:Environmental Restoration and Remediation / Q000379:methods; D005374:Filtration; D060587:Groundwater / Q000737:chemistry*; D019216:Metals, Heavy / Q000737:chemistry; D037742:Nanotubes, Carbon / Q000737:chemistry / Q000648:ultrastructure; D014241:Trichloroethylene / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000737:chemistry; D014877:Water Pollution, Chemical
chemical_list: D019216:Metals, Heavy; D037742:Nanotubes, Carbon; D014874:Water Pollutants, Chemical; D014241:Trichloroethylene
keywords: CNT hybrid; CNT membrane; VOC removal; biomimetic; carbon nanotubes; groundwater remediation; hierarchical catalysis; trichloroethylene