Chemical changes of TCE and PCE in the process of activated carbon adsorption-supercritical extraction

摘要

The objective of this study is to obtain the knowledge about the chemical changes of trichlorethylene (TCE) or tetrachloroethylene (PCE) in the processes of activated carbon adsorption and extraction by supercritical carbon dioxide. TCE was extracted from 3 kinds of TCE loaded activated carbon samples-adsorbed from 100ppm of aqueous solution, adsorbed from N_2 gas blown through TCE saturated aqueous solution and adsorbed directly.