Science Inventory

PERVAPORATION USING ADSORBENT-FILLED MEMBRANES

Citation:

Ji, W. AND S K. Sikdar*. PERVAPORATION USING ADSORBENT-FILLED MEMBRANES. DOI: 10.1021/ie95036 INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH. American Chemical Society, Washington, DC, 35(4):1124-1132, (1996).

Impact/Purpose:

information

Description:

Membranes containing selective fillers, such as zeolites and activated carbon, can improve the separation by pervaporation. Applications of adsorbent-filled membranes in pervaporation have been demonstrated by a number of studies. These applications include removal of organic compounds from water, dehydration of azeotropic mixtures, and organic/organic separation. Three different types of adsorbents have been evaluated: zeolites, activated carbon, and carbon molecular sieves. Experimental results show the most promising filled membrane is the silicalitefilled poly(dimethylsiloxane) (PDMS) membrane which can be effectively used in the removal of organic compounds from water. The transport of species through adsorbent-filled membranes occurs by a sorption-diffusion mechanism. Sorption of species in the filled rubbery membranes can be described by a dual sorption model. Modeling of the transport process through filled membranes involves mass-transfer resistances in the different phases of the membranes: in the polymer phase, in the adsorbent phase, and in a polymer-adsorbent interface. Several models based on resistance-in-series mechanisms that were developed to describe the experimental results were reviewed.

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Record Details:

Record Type: DOCUMENT (JOURNAL/PEER REVIEWED JOURNAL)
Product Published Date: 04/01/1996
Record Last Revised: 12/04/2008
OMB Category: Other
Record ID: 128569

Organization:

U.S. ENVIRONMENTAL PROTECTION AGENCY

OFFICE OF RESEARCH AND DEVELOPMENT

NATIONAL RISK MANAGEMENT RESEARCH LABORATORY

SUSTAINABLE TECHNOLOGY DIVISION

IMMEDIATE OFFICE