The suitability of catalytic supercritical water oxidation (SCWO) technology for oily wastewater treatment is investigated. The effect of temperature, reaction time, oxygen excess, etc. on the extent of water purification is evaluated. The use of Cu2+, Mn2+, and Co2+ salts as catalysts accelerates the reaction and ensures a satisfactory level of water purification at temperatures as low as 380°C. The chemical oxygen demand (COD) decreases by more than 90% in the presence of Cu2+. Mn2+ and Co2+ are also fairly effective wastewater treatment catalysts. On the whole, CSWO is a highly effective process for removing organic compounds from oil wastewaters.
Similar content being viewed by others
References
A. F. Ahmed, J. Ahmad, Y. Basma, et al., J. Hazard. Mater., 141, 557-564 (2007).
C. MachinRamirez, A. I. Okohc, D. Morales, et al., Chemosphere, 70, 737-744 (2008).
G. H. Chen and G. H. He, Sep. Purif. Technol., 31, 83-89 (2003).
S. G. Poulopoulos, E. C. Voutsas, H. P. Grigoropoulou, et al., J. Hazard. Mater., 117, 135-139 (2005).
S. B. Hou, X. M. Xuan, J. P. Jia, et al., Shanghai Chemical Industry [in Chinese], 9, 11-14 (2003).
W. Tester and J. A. Cline, Corrosion, 55, 1088-1100 (1999).
P. Kritzer and E. Dinjus, Chem. Eng. J., 83, 207-214 (2001).
M. Modell, US Patent 4,338,199 (1982).
Y. Takahashi, T. Wydeven, and C. Koo, Adv. Space Res., 99, 483-487 (1991).
M. Watanabe, M. Mochiduki, S. Sawamoto, et al., J. Supercrit. Fluids, 20, 257-266 (2001).
L. H. Meng, Y. H. Xu, and Y. D. Huang, Environ. Protect. Chem. Indust. [in Chinese], 20, 1618 (2000).
B. T. Xiang, T. Wang, and Z. Y. Shen, Huanjing Kexue Xuebo [in Chinese], 22, 17-20 (2002).
J. W. Ding, F. Q. Chen, S. F. Wu, et al., Environ. Pollut. Control. [in Chinese], 22, 13 (2000).
B. T. Xiang, T. Wang, J. Liu, et al., Environ. Protect. Chem. Indust. [in Chinese], 19, 75-77 (1999).
C. C. Zhao and D. F. Zhao, Chongquing Environ. Sci.[in Chinese], 23, 45-48 (2010).
F. Takahashi, Z. R. Sun, K. Fukushi, et al., J. Supercrit. Fluids, 61, 126-133 (2012).
K. Kobiro, K. Sumoto, Y. Okimoto, et al., J. Supercrit. Fluids, 77, 63-69 (2013).
P. G. Duan, X. J. Bai, Y. P. Xu, et al., Fuel, 109, 225-233 (2013).
M. Dreher, B. Johnson, A. A. Peterson, et al., J. Catal., 301, 38-45 (2013).
J. G. Dickinson, J. T. Poberezny, and P. E. Savage, Appl. Catal. B: Environmental, 123-124, 357-366 (2013).
Author information
Authors and Affiliations
Corresponding author
Additional information
Translated from Khimiya i Tekhnologiya Topliv i Masel, No. 1, pp. 53 – 55, January– February, 2015.
Rights and permissions
About this article
Cite this article
Yu, L., Chen, Y. & He, F. Catalytic Supercritical Water Oxidation of Oily Wastewater. Chem Technol Fuels Oils 51, 87–92 (2015). https://doi.org/10.1007/s10553-015-0578-9
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10553-015-0578-9