Separation of dilute hazardous organics by low pressure composite membranes
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Separation of dilute hazardous organics by low pressure composite membranes

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Published by U.S. Environmental Protection Agency, Hazardous Waste Engineering Research Laboratory in Cincinnati, OH .
Written in English

Subjects:

  • Membranes (Technology),
  • Membrane separation

Book details:

Edition Notes

StatementD. Bhattacharyya ... [et al.]
ContributionsBhattacharyya, D. 1941-, Hazardous Waste Engineering Research Laboratory
The Physical Object
Pagination1 v
ID Numbers
Open LibraryOL14713625M

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Reverse-osmosis membrane separation characteristics of various organics: prediction of separation by surface force - pore flow model and solute surface concentration by finite-element method. Thin-film, composite membranes have been used to remove major pesticides, carcinogenic substances, priority organic pollutants, etc. However, although low pressure polyamids membranes have suc- cessfully separated chlorinated phenolics, there was a water flux drop due to mem- brane/solute interactions. Separation of dilute hazardous organics by low pressure composite membranes [microform] / D. Bhattachar Polymeric separation media / edited by Anthony R. Cooper; Membrane and separation technology: the Australian perspective / Alan J. Jones; Membrane technology and industrial separation techniques / Peter R. Keller. Separation of Organic-Organic Liquid Mixtures by Pervaporation mainly determined by relative affinities of the feed components for the membrane and their unequal mobilities within the membrane. Hence permeate composition will vary from that of the feed. The separation basis of pervaporation is a solution diffusion mechanismFile Size: KB.

  Separation of liquid mixtures, especially organic liquid mixtures, is widely used in industrial processes but still faces challenges with respect to separation in a high-efficiency, low Cited by: Composite membranes consist of at least two structural elements made from different materials, as shown in Figure 5. A single-layer composite membrane (5A) consists of a thin, selective layer atop a microporous support. The support provides only mechanical strength, whereas the separation is performed by the thin top-layer. Membrane Separation Processes (1) •Dialysis-Hemodialysis •Electrodialysis thin-film composite operating at a feed pressure of to 1, psia •For desalinizing of brackish water containing less than wt% dissolved low-molecular-weight organic compounds, viruses, and bacteria. membrane separation technology to AD treatment, the application of membrane separation to other mining applications was also reviewed. Finally, a number of case studies on the application of membrane separation in mining operations are presented, with an emphasis on the cost impacts and improvements on the environmental performance.

Novel Ceramic-Polymer Composite Membranes for the Separation of Liquid Waste Principal Investigator: Yoram Cohen organic solutes from dilute solutions by pervaporation. One major disadvantage of polymeric membranes, however, is their low mechanical, chemical and thermal resistance. This has inhibited their use where harsh process. Williams, M., Separation and purification of dilute hazardous organics by ozonation-low pressure composite membrane process. M.S. thesis, Department of Chemical Engineering, Univ. of Kentucky, Lexington. Google Scholar. It has observed that in β-CD membranes 99% recovery of acetic acid from aqueous solution has been obtained and found to be the best membrane for separation of acetic acid from dilute solution. Osmotic pressure is the pressure that must be added to the concentrated solution side in order to stop the solvent flow through the membrane. Reverse osmosis is the process of reversing the flow, forcing water through a membrane from a concentrated solution to a dilute solution to produce filtered water.