Performance of a semi-industrial scale gasification process for the destruction of polychlorinated biphenyls.
Journal of the Air & Waste Management Association, November, 2006 by Mendoza, Alberto; Caballero, Porfirio; Villarreal, Juan A.; Viramontes, Ricardo
ABSTRACT
A semi-industrial scale test was conducted to thermally treat mixtures of spent oil and askarels at a concentration of 50,000 ppm and 100,000 ppm of polychlorinated biphenyls (PCBs) under a reductive atmosphere. In average, the dry-basis composition of the synthesis gas (syngas) obtained from the gasification process was: hydrogen 46%, CO 34%, C[O.sub.2] 18%, and C[H.sub.4] 0.8%. PCBs, polychlorinated dibenzo-p-dioxins, and polychlorinated dibenzofurans (PCDDs/PCDFs) in the gas stream were analyzed by high-resolution gas chromatography (GC)-mass spectrometry. The coplanar PCBs congeners 77, 105, 118,156/157, and 167 were detected in the syngas at concentrations 99.9999% for both tests conducted. The concentration of PCDDs/PCDFs in the syngas were...
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