Novel Sorbents for Coal Conversion Wastewater Treatment. [3,5-Dichlorophenol]

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In this report results from a study undertaken to scale-up the clay modification procedure are described. Hitherto, adsorption of toxic organics found in coal conversion wastewater onto modified clays was carried out in a batch mode utilizing small amounts of the adsorbents. A realistic evaluation of the potential of modified clays as adsorbents under field conditions necessitates the development of continuous wastewater treatment schemes requiring larger amounts of the adsorbents. Hence a need arose for the scale-up of clay modification procedure. Three types of surfactant-modified clays, namely, cetylpyridinium-emathlite (CPC-EMAT), cetylpyridinium-montmorillonite (CPC-MONT), and cetylpyridinium hydroxy aluminum montmorillonite (CPC-HYDAL-MONT) were prepared by … continued below

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12 pages

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Fogler, H. S. January 1, 1989.

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In this report results from a study undertaken to scale-up the clay modification procedure are described. Hitherto, adsorption of toxic organics found in coal conversion wastewater onto modified clays was carried out in a batch mode utilizing small amounts of the adsorbents. A realistic evaluation of the potential of modified clays as adsorbents under field conditions necessitates the development of continuous wastewater treatment schemes requiring larger amounts of the adsorbents. Hence a need arose for the scale-up of clay modification procedure. Three types of surfactant-modified clays, namely, cetylpyridinium-emathlite (CPC-EMAT), cetylpyridinium-montmorillonite (CPC-MONT), and cetylpyridinium hydroxy aluminum montmorillonite (CPC-HYDAL-MONT) were prepared by a one-step method discussed in our previous report (ref.8). Emathlite (EMAT) is a commercial mixture of clay materials, whereas montmorillonite is a well-characterized, research-grade smectite. Comparison of the amounts of adsorbed surfactant prepared by this method and an earlier method showed that the two procedures yielded identical results. Using 3,5-dichlorophenol (DCP) as a toxic organic, packed bed adsorption experiments were carried out with CPC-EMAT and CPC-HYDAL-MONT as adsorbents. A step input of the adsorbate at different flow rates was used and the dynamic adsorption capacity of the adsorbents for the toxic organic (i.e. DCP) was determined. 12 refs., 5 figs., 3 tabs.

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OSTI; NTIS; GPO Dep.

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  • January 1, 1989

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Fogler, H. S. Novel Sorbents for Coal Conversion Wastewater Treatment. [3,5-Dichlorophenol], report, January 1, 1989; Ann Arbor, Michigan. (https://digital.library.unt.edu/ark:/67531/metadc1100077/: accessed July 16, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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