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
- Illinois Waste Management and Research Center, Champaign, IL (United States)
- Univ. of Illinois, Chicago, IL (United States). Dept. of Mechanical Engineering
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.
- OSTI ID:
- 538217
- Journal Information:
- Industrial and Engineering Chemistry Research, Vol. 36, Issue 9; Other Information: PBD: Sep 1997
- Country of Publication:
- United States
- Language:
- English
Similar Records
Supercritical water oxidation kinetics, products, and pathways for CH{sub 3}- and CHO-substituted phenols
Thermal decomposition of CH{sub 3}CHO studied by matrix infrared spectroscopy and photoionization mass spectroscopy