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Feasibility, system design, and economic evaluation of radiolytic degradation of 2,3,7,8-tetrachlorodibenzo-p-dioxin on soil

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Abstract:

This research shows that gamma irradiation is both a technically and economically feasible method to degrade chlorinated dioxins on soil. Approximately 99% degradation of dioxin on a model soil was achieved using gamma radiation at a dose of 800 kGy. In addition, this research determined the initial pathway of destruction, identified several controlling parameters, and developed a mass balance on degradation. The general applicability of this model behavior was successfully tested in a native contaminated soil where nearly 75% of the dioxin was destroyed at a dose of 450 kGy. Through a theoretical and conceptual understanding of radiolysis in soil, a sound basis for engineering design was established. Gamma radiation sources are commercially available, and this research outlines a new application of an established technology. A number of irradiator designs are proposed, and preliminary economic estimates are made to demonstrate that radiolysis can be a real alternative to incineration.

Keywords: DIOXIN; GAMMA IRRADIATION; HAZARDOUS WASTE; SOIL

Document Type: Research Article

DOI: http://dx.doi.org/10.2175/106143096X127361

Publication date: March 1, 1996

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  • Water Environment Research® (WER®) publishes peer-reviewed research papers, research notes, state-of-the-art and critical reviews on original, fundamental and applied research in all scientific and technical areas related to water quality, pollution control, and management. An annual Literature Review provides a review of published books and articles on water quality topics from the previous year.

    Published as: Sewage Works Journal, 1928 - 1949; Sewage and Industrial Wastes, 1950 - 1959; Journal Water Pollution Control Federation, 1959 - Oct 1989; Research Journal Water Pollution Control Federation, Nov 1989 - 1991; Water Environment Research, 1992 - present.
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