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The decomposition of sodium dodecylbenzene sulfonate (SDBS) in water by means of ultrasound irradiation at 20kHz was investigated. Experiments were conducted at surfactant concentrations of 175, 260 and 350mgl −1 , liquid volumes of 120, 170 and 220ml, temperatures of 20, 30 and 45°C and applied power of 40, 80 and 125W. The extent of degradation was followed monitoring substrate and organic...
Zero-valent iron improves the transformation of DDT [1,1,1-trichloro-2,2-bis(p-chlorophenyl)ethane] and its metabolites in aged and highly contaminated lake sediment under biotic conditions. The addition of Fe 0 has a strong effect on transformation rates at 22°C and 9°C, the most enhanced degradation being obtained for DDT and DDOH [2,2-bis(p-chlorophenyl)ethanol]. At 22°C and 10 weeks’ incubation,...
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