Higher degree decomposition of harmful organic compounds containing chlorine by using molten salts

Yuzuru Sato, Daisuke Aoki, Yojiro Yamauchi, Tsutomu Yamamura

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

The decomposition of C6H5CI, which is similar to harmful compounds such as PCBs, was investigated using the basic molten salt mixtures, KOH- K2CO3 and NaOH-Na2CO 3. A sample of C6H5Cl was injected, together with a carrier gas, either imitation air (N2-21%O2) or N2, into the molten salts in the temperature range from liquidus to 700°C The exhaust was analyzed by using GC/MS both quantitatively and qualitatively. The concentration of C6H5Cl remaining in the exhaust was extremely low and the decomposition efficiency was at least 99.999% for both imitation air and N2 as carrier gas. However, C 6H5Cl was not completely decomposed to CO2 and H2O if the concentration of oxygen was lower than the stoichiometric ratio: instead many intermediate compounds were formed, and all were chlorine-free. The results indicated that the chlorine in C6H 5Cl was effectively removed by the alkali hydroxide-carbonate mixtures even if oxygen is not contained in the carrier gas. Potassium salts are somewhat better than the sodium salts in their capacity for decomposition.

Original languageEnglish
Title of host publicationMolten Salts XIV - Proceedings of the International Symposium
Pages216-225
Number of pages10
Publication statusPublished - 2006 Dec 1
Event206th ECS Meeting - Honolulu, HI, United States
Duration: 2004 Oct 32004 Oct 8

Publication series

NameProceedings - Electrochemical Society
VolumePV 2004-24

Other

Other206th ECS Meeting
CountryUnited States
CityHonolulu, HI
Period04/10/304/10/8

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Sato, Y., Aoki, D., Yamauchi, Y., & Yamamura, T. (2006). Higher degree decomposition of harmful organic compounds containing chlorine by using molten salts. In Molten Salts XIV - Proceedings of the International Symposium (pp. 216-225). (Proceedings - Electrochemical Society; Vol. PV 2004-24).