Distribution of phenanthrene between soil and an aqueous phase in the presence of anionic micelle-like amphiphilic polyurethane particles

Sorption of micelle-like amphiphilic polyurethane (APU) particles to soil was studied and compared to that of a model anionic surfactant, sodium dodecyl sulfate (SDS). Three types of APU particles with different hydrophobicity were synthesized from urethane acrylate anionomers (UAA) and used in this...

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Bibliographic Details
Published in:Journal of hazardous materials 2003-12, Vol.105 (1), p.179-197
Main Authors: Lee, Kangtaek, Choi, Heon-Sik, Kim, Ju-Young, Ahn, Ik-Sung
Format: Article
Language:English
Subjects:
Adsorption
Amphiphilic polymer
Applied sciences
Earth sciences
Earth, ocean, space
Engineering and environment geology. Geothermics
Environmental Pollution - prevention & control
Exact sciences and technology
Hydrophobicity
Micelle
Particle Size
Phenanthrene
Phenanthrenes - chemistry
Pollution
Pollution sources. Measurement results
Pollution, environment geology
polyurethane
Polyurethanes - chemistry
sodium dodecyl sulfate
Soil and sediments pollution
Soil Pollutants - analysis
solubility
Sorption
Surface-Active Agents
Water Pollutants, Chemical - analysis
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Summary:Sorption of micelle-like amphiphilic polyurethane (APU) particles to soil was studied and compared to that of a model anionic surfactant, sodium dodecyl sulfate (SDS). Three types of APU particles with different hydrophobicity were synthesized from urethane acrylate anionomers (UAA) and used in this study. Due to the chemically cross-linked structure, APU exhibited less sorption to the soil than SDS and a greater reduction in the sorption of phenanthrene, a model soil contaminant, to the soil was observed in the presence of APU than SDS even though the solubility of phenanthrene was higher in the presence of SDS than APU. A mathematical model was developed to describe the phenanthrene distribution between soil and an aqueous phase containing APU particles. The sorption of phenanthrene to the test soil could be well described by Linear isotherm. APU sorption to the soil was successfully described by Langmuir and Freundlich isotherms. The partition of phenanthrene between water and APU were successfully explained with a single partition coefficient. The model, which accounts for the limited solubilization of phenanthrene in sorbed APU particles, successfully described the experimental data for the distribution of phenanthrene between the soil and the aqueous phase in the presence of APU.
ISSN:0304-3894
1873-3336
DOI:10.1016/j.jhazmat.2003.08.012