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http://dx.doi.org/10.12652/Ksce.2013.33.4.1463

Trichloroethylene (TCE) Removal Capacity of Synthesized Calcium Sulfoaluminate Minerals in Hydrated Cement-based Materials  

Ha, Min-Gyu (Hanyang University)
Ghorpade, Praveen A. (Hanyang University)
Kim, Jeong-Joo (Hanyang University)
Park, Joo-Yang (Hanyang University)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.33, no.4, 2013 , pp. 1463-1469 More about this Journal
Abstract
Portland cement used as binding material in combination of ferrous iron for reductive dechlorination of chlorinated organics is already widely studied topic by several researchers. However there is no clear evidence about the component solely responsible in cement for trichloroethylene (TCE) dechlorination. Many researchers suspect that the ettringite, monosulfate phases associated with hydration of cement are responsible active agents for TCE dechlorination. This study deals with synthesizing different pure crystalline minerals like ettringite and monosulfate phases of cement hydration and check individual phase's TCE dechlorinating capacity in combination with ferrous iron. The results indicated that the synthesized minerals showed no reduction capacity for TCE. The findings in the present study is significant as it shows that ettringite and monosulfate phases which were suspected minerals by previous researchers for TCE dechlorination are not reactive. Hence it is suspected that some other mineral or mineral form in cement phase could be responsible for TCE degradation.
Keywords
Monosulfate; Ettringite; Cement; Ferrous iron; Trichloroethylene;
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