Supercritical Water Oxidation Technology

Tester, Jefferson W.; Holgate, H. Richard; Armellini, Fred J.; Webley, Paul A.; Killilea, William R.; Hong, Glenn T.; Barner, H. E.

doi:10.1021/bk-1993-0518.ch003

Cited by 206 publications

(126 citation statements)

References 0 publications

Supporting

Mentioning

123

Contrasting

Order By: Relevance

“…Solution densities are also reasonably high in SCWO/hydrothermal systems (0.1 to 0.9 g/cm3), allowing reasonably high waste throughputs (7). Because required organic oxidation temperatures are below 60O0C, NO, gases are not generated (8). In addition, hydrothermal processing/SCWO reactors are totally enclosed treatment facilities, in which gaseous and liquid effluents can be analyzed and retained, if necessary, before their release to the environment.…”

Section: In'ixoductionmentioning

confidence: 99%

Base hydrolysis and hydrothermal processing of PBX-9404 explosive

Sanchez¹,

Flesner²,

Spontarelli³

et al. 1994

View full text Add to dashboard Cite

Section: In'ixoductionmentioning

confidence: 99%

Base hydrolysis and hydrothermal processing of PBX-9404 explosive

Sanchez¹,

Flesner²,

Spontarelli³

et al. 1994

View full text Add to dashboard Cite

“…Super critical water (SCW, Tc=647K, Pc=22.1MPa) has several distinctive properties which are very differently from the water under normal conditions. SCW with low density, low dielectric constant, and low ionization constant can provide a homogeneous reaction environment for organics, oxygen and carbon dioxide, thereby obviating interphase transfer and leading to fast reaction rates [6][7]. Organic matters can be rapidly, thoroughly decomposed into small molecular compounds such as CO 2 , N 2 , and H2O less than 1min, and heteroatoms are converted to corresponding acids or salts.…”

Section: Introductionmentioning

confidence: 99%

Oxidation of Dyeing Sludge in Supercritical Water

Wang

et al. 2018

IOP Conf. Ser.: Mater. Sci. Eng.

View full text Add to dashboard Cite

Abstract. In this study, the effect of SCWO treatment, transformation characteristics of heavy metals and corrosion of Ni-based alloy 625 during dyeing sludge supercritical water oxidation (SCWO) were investigated. The experiment carried out at 580℃, 25MPa, oxidation coefficient of 1.3, reaction residence time 10min. The removal rate of COD reached 99.3% at the optimum reaction conditions which means the COD is almost completely destructed. Results of heavy metals determination showed that the concentration of Cu in the liquid products was 0.266mg/L, while Zn and Pb could not be detected under the experimental conditions. This implied that Cu, Zn and Pb in residues after SCWO treatment were more stable than that in raw sludge. The corrosion behaviour of Ni-based alloy 625 was discussed in different conditions. Consequently, it is believed that SCWO treatment is an effective alternative for safety disposal of dyeing sludge.

show abstract

“…In 1999, Hiroyuki Yoshida, showed that a relatively large amount of oil, organic acids, and amino acids could be extracted from fish, squid entrails and meat wastes by subcritical water treatment. 12,13 The essential oil from plants has been extracted by using subcritical water. Usually the oil in these plants is traditionally extracted either using steam distillation 5,6 or solvent extraction.…”

Section: Introductionmentioning

confidence: 99%

Extraction of cottonseed oil using subcritical water technology

et al. 2010

View full text Add to dashboard Cite

This work represents the extraction of cottonseed oil using subcritical water. The extraction efficiencies of different range temperatures (180-280 C), having mean particle size range from 3 mm to less than 0.5 mm, water:seed ratios of 0.5:1, 1:1, and 2:1, and extraction times in the range of 5-60 min were all investigated. The composition of the extracted oil, using the subcritical water, was analyzed by gas-liquid chromatography and compared with that extracted using traditional hexane extraction. The results showed that the optimum temperature, mean particle size, water:seed ratio, and extraction time were 270 C, \0.5 mm, 2:1, and 30 min, respectively. In addition the extracted oil was identical to that extracted using the traditional hexane method.

show abstract

Supercritical Water Oxidation Technology

Cited by 206 publications

References 0 publications

Base hydrolysis and hydrothermal processing of PBX-9404 explosive

Base hydrolysis and hydrothermal processing of PBX-9404 explosive

Oxidation of Dyeing Sludge in Supercritical Water

Extraction of cottonseed oil using subcritical water technology

Contact Info

Product

Resources

About