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| Dechlorination and removal of hexachlorobenzene and influence factors in a sodium carbonate/glycerol system |
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Abstract Series of batch experiments were set up to evaluate the effects of hydrogen donors, bases, catalysts and temperature on the removal and dechlorination efficiencies (HRE and HDE) of hexachlorobenzene (HCB, as a case compound). The results indicated that the Na2CO3/glycerol system was an efficient BCD system for HCB. The amount of base significantly influenced the dechlorination efficiency of HCB in the Na2CO3/glycerol system. When the mass ratio of HCB: iron: Na2CO3: glycerol was 1:1:12:90, HRE and HDE were 99.9% and 91.9%, respectively. Some chlorobenzenes were completely dechlorinated to benzene and volatilized from the system. The research showed weak base could also effectively catalyze the removal and dechlorination of HCB, which was similar to strong base. Since the Na2CO3/glycerol system was efficient for the organochlorine compounds, like HCB, and reagents used were cheap and abundant could be a promising system for BCD application.
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Received: 30 March 2014
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