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Price: Printed Copy A07 Microfiche AOl Codes are used for pricing all publications. The code is determined by the number of pages in the publication. Information pertaining to the pricing codes can be found in the current issues of the following publications, which are generally available in most libraries: Energy Research Abstracts (ERA); Government Reports Announcements and Index (GRA and I); Scientific and Technical

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This study investigated the effect of underwater plasma discharge on the chemical regeneration of spent granular activated carbon (GAC). The maximum recovery rate for iodine number was 69% with chemical regeneration of the spent GAC. Chemical regeneration along with underwater plasma discharge (600 W) could achieve 7-24% higher iodine numbers comparing with the chemical alone regeneration. We could achieve 89% of iodine number recovery upon adding NaOH 20% and ethanol 50%, with discharging plasma. Adsorption of hydrophobic organic materials by both virgin and regenerated GACs exhibited similar removal rates whereas hydrophilic materials were not readily removed by the regenerated GAC.

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