Dechlorination of chloriated hydrocabons by zero-valent silicon in the presence of metal ions

Chun chi Lee, Ruey an Doong, Yen jung Lai

Research output: Contribution to journalConference articlepeer-review


The dechlorination of chlorinated hydrocarbons by Si(O) in the presence of heavy metals was studied to understand the feasibility of coupled reduction of chlorinated hydrocarbons and heavy metal ions. A complete dechlorination of CCl 4 was observed within 10 min at pH 8.5. Addition of heavy metal ions including Cu(II), Co(II), and Ni(II) lowered the production rate of hydrogen gas and dechlorination efficiency of CCl 4, due to the competition of active sites between CCl 4 and metal ions. However, Ni(II) promoted the dechlorination efficiency and rate of tetrachloroethylene. XPS and ICP-MS results showed that Ni(II) was transformed to zero-valent metal to enhance the dechlorination of chlorinated hydrocarbons. This is an abstract of a paper presented at the 229th ACS National Meeting (San Diego, CA 3/13-17/2005).

Original languageEnglish (US)
Pages (from-to)ENVR-115
JournalACS National Meeting Book of Abstracts
Issue number1
StatePublished - 2005
Externally publishedYes
Event229th ACS National Meeting - San Diego, CA., United States
Duration: Mar 13 2005Mar 17 2005

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)


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