A literature survey was conducted to collect information and summarize the methods available to capture iodine from fuel reprocessing off-gases. Techniques were categorized as either wet scrubbing or solid adsorbent methods, and each method was generally described as it might be used under reprocessing conditions. Decontamination factors are quoted only to give a rough indication of the effectiveness of the method. No attempt is made to identify a preferred capture method at this time, although activities are proposed that would provide a consistent baseline that would aid in evaluating candidate materials and technologies. v CONTENTS

This study presents a preliminary evaluation of the technical and economic feasibility of selected conceptual processes for pyrolytic conversion of organic feedstocks or the decomposition/detoxification of hazardous wastes by coupling the process to the geopressured-geothermal resource. of each process selected for evaluation including the technical evaluation of each. used and the evaluation of the technically viable process. section presents conclusions and recommendations. processes were selected for evaluation. These are pyrolytic conversion of biomass to petroleum like fluids, wet air oxidation (WAO) at subcritical conditions for destruction of hazardous waste, and supercritical water oxidation (SCWO) also for the destruction of hazardous waste. The scientific feasibility of all three processes has been previously established by various bench-scale and pilot-scale studies. The report presents a detailed discussion of the resource and Work supported by the U.S. Department of Energy, Assistant Secretary for Conservation and Renewable Energy Office of Utility Technologies, Under DOE Contract No. DE-AC07-76ID01570.

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The Cementitious Barriers Partnership is a multidisciplinary and multi-institutional collaborative project sponsored by the US Department of Energy (DOE) Office of Waste Processing. Its purpose is to develop a set of simulation tools to estimate as well as improve understanding of time-dependent structural, hydraulic, and chemical performance of cement barriers used in nuclear applications. The foundation of the simulation is individual models, described herein, that will ultimately be integrated to form the working simulation. The simulation can be used to assess cementitious materials in waste management applications or operating facilities. A summary of the project's documented accomplishments is given in this article.