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Title: Oxidation of CH{sub 3}CHO by O{sub 3} and H{sub 2}O{sub 2} mixtures in supercritical CO{sub 2} in a perfectly stirred reactor

Abstract

Organic waste streams must be handled in an environmentally benign manner. The authors present an alternative to incineration for such waste streams. The process involves the dissolution of the organic byproducts into supercritical carbon dioxide and the subsequent oxidation of these compounds by ozone and hydrogen peroxide. The feasibility of the process is examined through numerical calculations on a surrogate organic species, CH{sub 3}CHO. A parametric matrix of the optimal conditions that allow for complete destruction of acetaldehyde (into CO{sub 2} and H{sub 2}O) and the reaction pathways are evaluated. The oxidation process is exothermic, with as little as 2% acetaldehyde and 4% ozone (in a bath containing 94% supercritical CO{sub 2}) reacting to produce an almost 600 K rise in temperature. The calculations indicate that the use of nonideal equations of state provides results that are negligibly different from those obtained using the ideal gas relationship.

Authors:
 [1];  [2]
  1. Illinois Waste Management and Research Center, Champaign, IL (United States)
  2. Univ. of Illinois, Chicago, IL (United States). Dept. of Mechanical Engineering
Publication Date:
OSTI Identifier:
538217
Resource Type:
Journal Article
Resource Relation:
Journal Name: Industrial and Engineering Chemistry Research; Journal Volume: 36; Journal Issue: 9; Other Information: PBD: Sep 1997
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; 54 ENVIRONMENTAL SCIENCES; ACETALDEHYDE; OXIDATION; SUPERCRITICAL GAS EXTRACTION; CARBON DIOXIDE; OZONE; HYDROGEN PEROXIDE; CHEMICAL REACTION KINETICS; INDUSTRIAL WASTES

Citation Formats

Nelson, W.M., and Puri, I.K. Oxidation of CH{sub 3}CHO by O{sub 3} and H{sub 2}O{sub 2} mixtures in supercritical CO{sub 2} in a perfectly stirred reactor. United States: N. p., 1997. Web. doi:10.1021/ie970106b.
Nelson, W.M., & Puri, I.K. Oxidation of CH{sub 3}CHO by O{sub 3} and H{sub 2}O{sub 2} mixtures in supercritical CO{sub 2} in a perfectly stirred reactor. United States. doi:10.1021/ie970106b.
Nelson, W.M., and Puri, I.K. Mon . "Oxidation of CH{sub 3}CHO by O{sub 3} and H{sub 2}O{sub 2} mixtures in supercritical CO{sub 2} in a perfectly stirred reactor". United States. doi:10.1021/ie970106b.
@article{osti_538217,
title = {Oxidation of CH{sub 3}CHO by O{sub 3} and H{sub 2}O{sub 2} mixtures in supercritical CO{sub 2} in a perfectly stirred reactor},
author = {Nelson, W.M. and Puri, I.K.},
abstractNote = {Organic waste streams must be handled in an environmentally benign manner. The authors present an alternative to incineration for such waste streams. The process involves the dissolution of the organic byproducts into supercritical carbon dioxide and the subsequent oxidation of these compounds by ozone and hydrogen peroxide. The feasibility of the process is examined through numerical calculations on a surrogate organic species, CH{sub 3}CHO. A parametric matrix of the optimal conditions that allow for complete destruction of acetaldehyde (into CO{sub 2} and H{sub 2}O) and the reaction pathways are evaluated. The oxidation process is exothermic, with as little as 2% acetaldehyde and 4% ozone (in a bath containing 94% supercritical CO{sub 2}) reacting to produce an almost 600 K rise in temperature. The calculations indicate that the use of nonideal equations of state provides results that are negligibly different from those obtained using the ideal gas relationship.},
doi = {10.1021/ie970106b},
journal = {Industrial and Engineering Chemistry Research},
number = 9,
volume = 36,
place = {United States},
year = {Mon Sep 01 00:00:00 EDT 1997},
month = {Mon Sep 01 00:00:00 EDT 1997}
}