Home Books eBooks Journals References & Proceedings Authors, Editors, Reviewers A-Z Product Index Awards
Advances in Molten Salts

ISSN:
1-56700-142-4 (Print)

Organic Waste Processing using Molten Salt Oxidation

Peter C. Hsu
Lawrence Livermore National Laboratory P.O. Box 808 Livermore, С A 94551-0808

David L. Hippie
Lawrence Livermore National Laboratory P.O. Box 808 Livermore, С A 94551-0808

Kenneth G. Foster
Lawrence Livermore National Laboratory P.O. Box 808 Livermore, С A 94551-0808

Robert W. Hopper
Lawrence Livermore National Laboratory P.O. Box 808 Livermore, С A 94551-0808

Timothy D. Ford
Lawrence Livermore National Laboratory P.O. Box 808 Livermore, С A 94551-0808

Abstract

Molten Salt Oxidation (MSO) is a thermal means of oxidizing (destroying) the organic constituents of mixed wastes, hazardous wastes, and energetic materials while retaining inorganic and radioactive constituents in the salt. For this reason, MSO is considered a promising alternative to incineration for the treatment of a variety of organic wastes. The U. S. Department of Energy's Office of Environmental Management (DOE/EM) is currently funding research that will identify alternatives to incineration for the treatment of organic-based mixed wastes. (Mixed wastes are defined as waste streams which have both hazardous and radioactive properties.) One such project is Lawrence Livermore National Laboratory's Expedited Technology Demonstration of Molten Salt Oxidation (MSO). The goal of this project is to conduct an integrated demonstration of MSO, including off-gas and spent salt treatment, and the preparation of robust solid final forms. Livermore National Laboratory (LLNL) has constructed an integrated pilot-scale MSO treatment system in which tests and demonstrations are presently being performed under carefully controlled (experimental) conditions. The system consists of a MSO process vessel with dedicated off-gas treatment, a salt recycle system, feed preparation equipment, and equipment for preparing ceramic final waste forms. In this paper we describe the integrated system and discuss its capabilities as well as preliminary process demonstration data. A primary purpose of these demonstrations is to identify the most suitable waste streams and waste types for MSO treatment.