Resumo

POZNYAK, Tatiana I.; MANZO, A.  e  MAYORGA, José Luis. Elimination of Chlorinated Unsaturated Hydrocarbons from Water by Ozonation: Simulation and Experimental Data Comparison. Rev. Soc. Quím. Méx [online]. 2003, vol.47, n.1, pp.58-65. ISSN 0583-7693.

The decomposition of chlorinated unsaturated hydrocarbons in water by ozone at constant pressure and temperature (20 °C) was realized experimentally in a semi-batch reactor (250-mL) in distilled water. The compounds were trichloroethylene (TCE) and tetra-chloroethylene (PCE). The kinetics of the pollutant ozonation is proposed in a mathematical model that includes the ozone's mass-transfer as well as the reaction kinetics between molecular ozone and chlorinated unsaturated hydrocarbons. Based on the computer simulation, the optimal conditions to perform the maximal removal of TCE and PCE from water are obtained. The optimal ozonation conditions in this case were as follows: the initial ozone concentration was 1.0 × 10⁻³ mole L⁻¹, the ozone-oxygen mixture flow was 5-L min⁻¹. The experimental data and simulation results show fit well.

Palavras-chave : Ozonation of water; simulation and elimination; trichloroethylene; tetrachloroethylene.

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