CEMENTATION AS A METHOD OF REMEDIATION OF SOIL CONTAMINATED WITH XYLENE

The research was performed to evaluate usability of stabilization/solidification (S/S) processes in permanent separation of the surface of soil contaminated with xylene in order to reduce its emis-sion to the environment. For the needs of the experiment, soil samples were prepared with the same amounts of solvent and then, after averaging their physicochemical composition, stabilized with Port-land cement CEM II 32,5 R. In the course of stabilization/solidification process, all emitted gaseous contaminants were monitored. The effect of a binder dose on xylene emission was evaluated based on the momentary concentrations (C8H10) monitored above the surface of reactive mixture using a flame-ionization detector. Simultaneously, contaminated air was run through pipes filled with acti-vated carbon. Then, based on chromatographic analysis of xylene vapors adsorbed on activated car-bon, the measured momentary concentrations were verified. 1