This master’s thesis studies the chemical oxidation of the wood preservative pentachlorophenol (PCP) by thermally activated sodium persulfate. Thermal activation of sodium persulfate at temperatures ranging from 23°C to 80°C was studied in aqueous media and soil slurry (20 % total solids). Oxidation tests were carried out at 60°C in aqueous media, soil slurry, soil slurry containing insoluble carbonates (10 % total solids) and soil slurry containing metals typically found on wood-treating sites, including: copper (1500 mg/kg), chrome (2000 mg/kg) and arsenic (1500 mg/kg). In aqueous media, 99 % of PCP was degraded with a reaction time of 6 hours. After 12 hours, PCP oxidation rates were: 86 % in soil slurry and 84 % in soil slurry containing metals. With a reaction time of 10 hours, 96 % of PCP was degraded in soil slurry containing insoluble carbonates. In experiments conducted in soil, soil oxidant demand (SOD) accelerated the degradation of persulfate and decreased PCP oxidation. pH control is a key element for the success of chemical oxidation of PCP by thermally activated persulfate.
| Date | 29 Oct 2014 |
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| Original language | French |
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| Awarding Institution | - École de technologie supérieure
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| Supervisor | Jean-Sébastien Dubé (Supervisor) |
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Bacon Savard, R. (Author),
Dubé (Supervisor),
29 Oct 2014Student thesis: Master's thesis › Master in Engineering: Engineering