PMID: 11606243Oct 19, 2001Paper

Elimination of cutting oil wastes by promoted hydrothermal oxidation

Journal of Hazardous Materials
Juan R PortelaEnrique Martínez de la Ossa

Abstract

Cutting oils are emulsionable fluids widely used in metalworking processes. Their composition is normally oil, water, and additives (fatty acids, surfactants, biocides, etc.) generating a toxic waste after a long use. Generally, it is a waste too dilute to be incinerated and it is difficult to treat biologically. Other conventional treatment methods currently used are not satisfactory from the environmental point of view. Wet air oxidation (WAO) and supercritical water oxidation (SCWO) are two forms of hydrothermal oxidation that have been proved to be effective processes to treat a wide variety of industrial wastes, but hardly tested for oily wastes. In the case of refractory wastes, WAO process is not efficient enough due to the moderate temperatures used. SCWO is a more powerful process since operating temperatures are usually around 600 degrees C, but the use of severe conditions leads to major disadvantages in the commercialization of the technology. In order to enhance WAO and SCWO efficiency at mild conditions, the use of free radical promoters has been studied in this work. Both normal and promoted hydrothermal oxidation have been tested to treat cutting oil wastes in a continuous flow system operating at 300-500 degree...Continue Reading

References

May 20, 1999·Journal of Hazardous Materials·J López BernalE Martínez de la Ossa
Aug 13, 2002·Water Research·Shiow Shyung LinChia Chrn Chen

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Citations

Jun 9, 2005·Journal of Hazardous Materials·Bambang VeriansyahYoun-Woo Lee
Apr 3, 2012·Environmental Science & Technology·Jose AbelleiraEnrique Nebot
Nov 5, 2008·Journal of Occupational and Environmental Hygiene·William A HeitbrinkThomas M Peters
Oct 6, 2007·Journal of Environmental Sciences (China)·Bambang Veriansyah, Jae-Duck Kim
Aug 23, 2005·Water Research·Christina ChengRafid M Alkhaddar
Feb 11, 2015·Environmental Technology·L ChachouK Bensadok
Oct 16, 2014·Environmental Science and Pollution Research International·Shiying ChenJicheng Bi
Sep 12, 2009·Journal of Hazardous Materials·Ali SinağSara Bilge Ozgürler
Apr 25, 2007·Journal of Occupational and Environmental Hygiene·William A HeitbrinkThomas J Slavin
Mar 12, 2008·Water Environment Research : a Research Publication of the Water Environment Federation·Wei-Jin GongDan-Li Xi

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