Sorption on nonionic surfactants on sediment materials
Article Abstract:
The sorption behavior of alcohol ethoxylates within a sediment and water environment appeared to be most affected by the concentration of Oxyethylene groups. Little effect on sorption was observed due to Ca2+ concentration, concentration of suspended solids or sediment composition. A small effect on sorption behavior was caused by the ionic strength and pH of the solution. The sorption mechanism appears to be based on the hydrogen bond dynamics involving the oxethylene groups, resulting in adsorption.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1997
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Determination of Henry's constants of organic compounds of low volatility: methylanilines in methanol-water
Article Abstract:
The determination of the Henry's constants of low volatility organic compounds by a flow-through gas-liquid equilibration method is discussed. Four hydrophobic ionogenic organic compounds were analyzed as a function of composition of the methanol-water mixed solvent. The suitability of the method for determining transport and fate of hydrophobic ionogenic organic compounds with relatively high solubilities and relatively low Henry's constants was demonstrated.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1992
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Sorption of phenanthrene from water onto alumina coated with dianionic surfactants
Article Abstract:
The adsorption of phenanthrene from water to dianionic DOWFAX surfactants was investigated to determine whether sorption of nonionic organic compounds are affected by their partitioning phases. The results revealed that partitioning of phenanthrene between water and surfactant monolayers and bilayers is more efficient than between the corresponding surfactants phases. They provide evidence that DOWFAX surfactants are efficient sorbents of phenanthrene.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1996
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- Abstracts: In situ and laboratory determined first-order degradation rate constants of specific organic compounds in an aerobic aquifer
- Abstracts: Scavenging of polycyclic aromatic hydrocarbons by rain. Concentrations and distributions of polycyclic aromatic hydrocarbons and polychlorinated biphenyls in rainwater
- Abstracts: Hydration-facilitated sorption of specifically interacting organic compounds by model soil organic matter. Competitive sorption between atrazine and other organic compounds in soils and model sorbents
- Abstracts: Comparison of butyric acid, ethanol, lactic acid, and propionic acid as hydrogen donors for the reductive dechlorination of tetrachloroethene
- Abstracts: Reduced mineralization of low concentrations of phenanthrene because of sequestering in nonaqueous-phase liquids