Sorption and desorption rates of carbon tetrachloride and 1,2 dichlorobenzene to three organobentonites and a natural peat soil
Article Abstract:
Carbon tetrachloride (CC14) and 1,2-dichlorobenzene (1,2-DCB) sorption and desorption rates show that there are marked differences in sorption rates between organobentonites and peat soil. Experimental results show that organobentonites absorb 1,2-DCB faster. It also confirmed that CC14 has a faster mass transfer rate and that organobentonite alkyl chain lengths were insignificant in mass transfer rates. It also mentioned that solute desorption was slower than uptake for two organobentonites and that a local equilibrium assumption would satisfactorily describe CC14 and 1,2-DCB in most environmental applications.
Comment:
Carbon tetrachloride & 1,2-dichlorobenzene sorption/desorption rate show difference in organobentonites & peat sorption rate
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1998
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Effect of Triton X-100 on the rate of trichloroethene desorption from soil to water
Article Abstract:
The influence of Triton X-100, soil contaminant contact time and soil organic carbon content on the desorption of trichloroethene (TCE) from soil to water was studied by batch sorption experiments and continuous-flow stirred tank reactor experiments. The soil samples used in the study were collected from a contaminated sand-and-gravel aquifer at Picatinny Arsenal, NJ. Results show that the addition of Triton X-100 increased the mass-transfer coefficient of TCE. It was also found that the organic matter content of the soils has a strong effect on the rate-limited diffusion of the contaminants.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1995
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Sorption and desorption rates of carbon tetrachloride and 1,2-dichlorobenzene to three organobentonites and a natural peat soil
Article Abstract:
Carbon tetrachloride (CCl4) and 1,2-dichlorobenzene (1,2-DCB) sorption and desorption rates show that there are marked differences in sorption rates between organobentonites and peat soil. Experimental results show that organobentonites absorb 1,2-DCB faster, that CCl4 has a faster mass transfer rate, that organobentonite alkyl chain lengths were insignificant in mass transfer rates, that solute desorption was slower that uptake for two organobentonites and that a local equilibrium assumption would satisfactorily describe CCl4 and 1,2-DCB in most environmental applications.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1998
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