Emerging Technologies in Hazardous Waste Management III (ACS by D. William Tedder, Frederick G. Pohland

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By D. William Tedder, Frederick G. Pohland

Describes actual and chemical applied sciences for treating and handling reliable, liquid, and gaseous wastes. contains assurance of soil decontamination and remediation; therapy of unstable waste compounds; and remedy of radioactive and combined wastes. presents an in-depth overview of cutting-edge supercritical water extraction know-how. Examines in situ and ex situ applied sciences for strong decontamination. provides reviews of photo-assisted decomposition applied sciences for wastewater therapy. presents insurance of leading edge subject matters, together with comparability of complicated oxidation approaches; decision of biodegradation kinetics with respirometry and staff contribution equipment; and therapy of volatiles with gas-phase bioreactors.

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Extra info for Emerging Technologies in Hazardous Waste Management III (ACS Symposium Series) (Bk. 3)

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Intermediate reactions (Adapted from réf. ; ACS Symposium Series; American Chemical Society: Washington, DC, 1993. 4 28 EMERGING TECHNOLOGIES IN HAZARDOUS WASTE MANAGEMENT III f o r m a l d e h y d e may only be a t t a c k e d by h y d r o x y l ; calculations supporting this notion of Peyton's are shown in Figure 7) (13). Combining items (1) and (2) gives Table 1. ch002 (3) High organics concentrations. Organics per s e are not a problem for the kinetics of any oxidation process, although the stoichiometric requirements for o x i d a n t ( s ) a n d light (where applicable) will clearly i n c r e a s e with organic content.

High destruction efficiencies may be achieved at low reactor residence times (approximately 1 minute or less) for temperatures above 550°C. Under these conditions, no NOx compounds are produced. The high solubility of organics and oxygen and the low solubility of salts in supercritical water make it an attractive medium for both oxidation and salt separation. This paper reviews critical technology components and operations required for commercial-scale development of supercritical water oxidation (SCWO).

Killilea , Glenn T. Hong , and Herbert E. , Bloomfield, NJ 07003 2 3 Hazardous organic wastes, including chlorinated hydrocarbons, in aqueous media containing salts can be effectively oxidized by treatment above the critical point of pure water (374°C, 221 bar). High destruction efficiencies may be achieved at low reactor residence times (approximately 1 minute or less) for temperatures above 550°C. Under these conditions, no NOx compounds are produced. The high solubility of organics and oxygen and the low solubility of salts in supercritical water make it an attractive medium for both oxidation and salt separation.

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