Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9609843 | Applied Catalysis B: Environmental | 2005 | 9 Pages |
Abstract
The hydrolysis reaction of 1,1,2,2-tetrachloroethane (TeCA) is significantly enhanced by sorption on activated carbon. TeCA is quantitatively transformed into trichloroethene (TCE) at moderate pH values. This transformation is exploited as the basic step of a site-adapted groundwater-cleanup technology. The volatility of TCE is a factor of 23 higher than that of TeCA such that the partially dehydrochlorinated product can be easily stripped out of the groundwater flow. The base-mediated and the neutral dehydrochlorination of TeCA were studied as a function of temperature and pH value in batch and column experiments. Surprisingly, it was found that despite high loadings of the sorbent with TeCA and TCE (â¥20 wt.%) the TeCA remains available for the hydrolysis reaction.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Catalysis
Authors
Katrin Mackenzie, Juergen Battke, Robert Koehler, Frank-Dieter Kopinke,