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Student Number 85326003
Author Chun-Chih Kuo(T)
Author's Email Address No Public.
Statistics This thesis had been viewed 266 times. Download 11 times.
Department Graduate Institute of Environmental Engineering
Year 1997
Semester 2
Degree Master
Type of Document Master's Thesis
Language zh-TW.Big5 Chinese
Title The Effects of Surfactants for the Sorption of Nonionic Organic Compound by Peat and Natural Soil in Aqueous System
Date of Defense
Page Count 3
Keyword
  • CMC
  • NOCs
  • Partition
  • Solubility Enhancement
  • Sorption
  • Surfactant
  • Abstract The solubility enhancement of nonionic organic compounds
    (NOCs) by surfactant The solubility enhancement of nonionic
    organic compounds (NOCs) by surfactants plays an important role
    in chemical and biological remediation of contaminated soils and
    sediments. The sorption of nonionic surfactants (Triton X-100,
    Triton X-305 and Triton X-405) and its effect on distribution of
    benzene, toluene, ethylbenzene, p-xylene, lindane, \-BHC, and
    heptachlor epoxide in natural and organic soil - water systems
    were investigated.               Because of its
    low molecular weight and high polarity, TX-100 when incorporated
    with Soil Organic Matter (SOM) became unfavorable partition
    medium for organic-chlorinated pesticides. Obviously, as the
    amount of the TX-100 increase, the partition coefficient was
    decrease. On the other hand, increasing TX-100 equilibrium
    concentration can promote the sorption of BTEX on SOM. The
    relative high water solubility of BTEX and the k-k interaction
    with surfactants in SOM may result in a decrease in the
    partition coefficients in the order KdKmnKcmc.   The
    effect of nonionic surfactants on the sorption of organic-
    chlorinated pesticides on organic soil follow the same trend in
    the order KdKmnKcmc. However, in the BTEX-soil system, not
    only can the organic matter content be increased due to the
    sorption of TX surfactants, but the incorporated organic phase
    may favor BTEX partitioning. As a result, the partition
    coefficient decrease in the order KdKmnKcmc. Sorption of
    TX-405 by organic soil may result in the change of the Cohesive
    Energy Densities (CEDs) of SOM. This can be attributed to the
    change of Kom value from KcmcKmnKd to KdKmnKcmc.
    Table of Content
    Reference
    Advisor
  • Lee Jiunn-Fwu(T)
  • Files No Any Full Text File.
    Date of Submission

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