Sorption of hydrophobic organic compound

Murphy, E.M., Zachara, J.M., and Smith, S.C. Influence of mineral-bound humic substances on the sorption of hydrophobic organic compounds. Environ. Scl Technol, 24(10) 1507-1516, 1990. 

Perlinger, J.A., Eisenreich, S.J., and Capel, P.D. Application of headspace analysis to the study of sorption of hydrophobic organic compounds to a-ALOj, Environ. Sci. TechnoL., 27(5) 928-937, 1993. 

It is also recognized that the sorption of hydrophobic organic compounds onto dissolved organic matter can significantly increase the solubility of the compounds under aqueous conditions. The importance of solubility in determining the fate of PPCPs will be discussed in Section 3.3.2. Where available, the sorption data can be htted to the Freundlich equation [Eq. (3.17)] to derive sorption parameters for the matrix ... 

Carmo, A. M., L. S. Hundal, and M. L. Thompson, Sorption of hydrophobic organic compounds by soil materials Application of unit equivalent Freundlich coefficients , Environ. Sci. Technol., 34,4363-4369 (2000). 

Georgi, A., Sorption of Hydrophobic Organic Compounds by Dissolved Humic Materials, Umweltforschungszentrum Leipzig-Halle, Leipzig, Germany, 1998 (in German). 

Curtis G. P., Reinhard M., and Roberts P. V. (1986) Sorption of hydrophobic organic compounds by sediments. In Geochemical Processes at Mineral Surfaces, ACS Symp. Ser. (eds. J. A. Davis and K. F. Hayes). American Chemical Society, Washington, DC, vol. 323, pp. 191-216. 

The most promising is the application of the Taylor-vortex column with Taylor-Couette flow. Sorption of hydrophobic organic compounds can lead to under estimation of actual removal efficiency of wastewater treatment, as weU as cross-contamination of the batches of the effluent due to release ofthe sorbed solute molecules. This is supported by the results ofthe laboratory studies, along with the ease ofthe potential scale-up. The critical part in the context ofthe removal of organic compounds from wastewater(s) is the material of the inner cylinder. The surface of the inner cylinder provides a potential sorption surface for hydrophobic organic molecules. Since the PTFE price could be prohibitive for the scale-up, stainless steel, or other materials should be explored as replacements for potential industrial applications. 

The sorption and desorption of chlorinated pesticides limits the potential success of electro-osmotic transport. The sorption of hydrophobic organic compounds (HOCs) is a partitioning type of process and can be represented by linear isotherms until aqueous phase solubility is approached (Chiou, Peters, and Freed, 1979). Karickhoff (1981) reported that the sorption isotherm was linear for HOCs up to half of the aqueous phase solubility level of the solute. Although HOCs adsorb to mineral surfaces mainly due to van der Waals forces (Schwarzenbach, Gschwend,... 

In addition to naturally occurring organic carbon, black carbon can contribute to the sorption of hydrophobic organic compounds in soils and sediments. Black carbon is elemental carbon, formed mainly by... 

Unfortunately, cation exchange does not lend itself to simple mathematical description as does idealized sorption of hydrophobic organic compounds. For low concentrations of a contaminant ion in a constant background of other ions, however, the ion exchange process often is treated approximately as a linear partitioning process, and use of a simple retardation factor in a transport model may be justified. Distribution coefficients for ionic contaminants in an aquifer are usually determined experimentally. Typically, a batch test is performed in which the ionic concentration on a fixed volume of aquifer solids and the ionic concentration in the associated pore waters are analyzed the distribution coefficient is taken as the ratio of the concentrations. Because sorption by ion exchange is affected by the concentrations of all other ions in the groundwater, the... 

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