Apparatus and method for two-stage oxidation of wastes

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An apparatus and method for oxidizing wastes in a two-stage process. The apparatus includes an oxidation device, a gas-liquid contacting column and an electrocell. In the first stage of the process, wastes are heated in the presence of air to partially oxidize the wastes. The heated wastes produce an off-gas stream containing oxidizable materials. In the second stage, the off-gas stream is cooled and flowed through the contacting column, where the off-gas stream is contacted with an aqueous acid stream containing an oxidizing agent having at least two positive valence states. At least a portion of the oxidizable materials are ... continued below

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14 p.

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Fleischman, S. D. September 28, 1993.

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Description

An apparatus and method for oxidizing wastes in a two-stage process. The apparatus includes an oxidation device, a gas-liquid contacting column and an electrocell. In the first stage of the process, wastes are heated in the presence of air to partially oxidize the wastes. The heated wastes produce an off-gas stream containing oxidizable materials. In the second stage, the off-gas stream is cooled and flowed through the contacting column, where the off-gas stream is contacted with an aqueous acid stream containing an oxidizing agent having at least two positive valence states. At least a portion of the oxidizable materials are transferred to the acid stream and destroyed by the oxidizing agent. During oxidation, the valence of the oxidizing agent is decreased from its higher state to its lower state. The acid stream is flowed to the electrocell, where an electric current is applied to the stream to restore the oxidizing agent to its higher valence state. The regenerated acid stream is recycled to the contacting column.

Physical Description

14 p.

Notes

INIS; OSTI as DE96004920

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  • Other Information: PBD: 28 Sep 1993

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  • Other: DE96004920
  • Report No.: PATENTS-US--A8127364
  • Grant Number: AC09-89SR18035
  • Office of Scientific & Technical Information Report Number: 219249
  • Archival Resource Key: ark:/67531/metadc667138

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • September 28, 1993

Added to The UNT Digital Library

  • June 29, 2015, 9:42 p.m.

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  • Nov. 2, 2015, 4:42 p.m.

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Fleischman, S. D. Apparatus and method for two-stage oxidation of wastes, text, September 28, 1993; Aiken, South Carolina. (digital.library.unt.edu/ark:/67531/metadc667138/: accessed December 15, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.