Studies on the Adsorption Characteristics of Trichloroethylene onto Activated Carbon Fiber in Gaseous Phase.

Tanada, Seiki; Shinoda, Sanji; Nakamura, Takeo; Harada, Taketsugu; Ohtsu, Jun

doi:10.1248/jhs1956.38.93

Cited by 5 publications

(1 citation statement)

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“…For the specific case of MWCNT–TCE interactions, there was a decrease in adsorption of TCE with temperature as shown in Figure 5. This points to a mechanism of physisorption, which was also observed by Tanada et al [44] for activated carbon fiber. In the case of alumina coated CNTs, the change in pH does not affect the adsorption of TCE, while it has a marked effect on the adsorption kinetics of Cd(II) [41], also pointing to a physisorption based mechanism for TCE.…”

Section: Strategies For Tce Removal: Cnt Membranes and Hybridssupporting

confidence: 82%

Carbon Nanotube Based Groundwater Remediation: The Case of Trichloroethylene

et al. 2016

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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.

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Section: Strategies For Tce Removal: Cnt Membranes and Hybridssupporting

confidence: 82%

Carbon Nanotube Based Groundwater Remediation: The Case of Trichloroethylene

et al. 2016

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Green Silver Nanoparticles: Recent Trends and Technological Developments

et al. 2021

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Trichloroethylene Adsorption by Fibrous and Granular Activated Carbons: Aqueous Phase, Gas Phase, and Water Vapor Adsorption Studies

Karanfil

Dastgheib

2004

Environ. Sci. Technol.

105

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The important adsorption components involved in the removal of trichloroethylene (TCE) by fibrous and granular activated carbons from aqueous solutions were systematically examined. Namely, adsorption of TCE itself (i.e., TCE vapor isotherms), water molecules (i.e., water vapor isotherms), and TCE in water (i.e., TCE aqueous phase isotherms) were studied, side-by-side, using 20 well-characterized surface-modified activated carbons. The results showed that TCE molecular size and geometry, activated carbon surface hydrophilicity, pore volume, and pore size distribution in micropores control adsorption of TCE at relatively dilute aqueous solutions. TCE adsorption increased as the carbon surface hydrophilicity decreased and the pore volume in micropores of less than 10 A, especially in the 5-8 A range, increased. TCE molecules appeared to access deep regions of carbon micropores due to their flat geometry. The results indicated that characteristics of both adsorbate (i.e., the molecular structure, size, and geometry) and activated carbon (surface hydrophilicity, pore volume, and pore size distribution of micropores) control adsorption of synthetic organic compounds from water and wastewaters. The important micropore size region for a target compound adsorption depends on its size and geometry.

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Studies on the Adsorption Characteristics of Trichloroethylene onto Activated Carbon Fiber in Gaseous Phase.

Cited by 5 publications

References 0 publications

Carbon Nanotube Based Groundwater Remediation: The Case of Trichloroethylene

Carbon Nanotube Based Groundwater Remediation: The Case of Trichloroethylene

Green Silver Nanoparticles: Recent Trends and Technological Developments

Trichloroethylene Adsorption by Fibrous and Granular Activated Carbons: Aqueous Phase, Gas Phase, and Water Vapor Adsorption Studies

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