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Biodegradation in water and sediment: simulation tests

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The aerobic biodegradation of DMSO has been assessed through OECD Guideline 303 A (Simulation Test - Aerobic Sewage Treatment. A: Activated Sludge Units) and EU Method C.10 (Biodegradation: Activated Sludge Simulation Test).

This higher-tier test, with 90.4 % of the substance degraded after 32 days for the concentration of 65 mg/L of DMSO, confirmed the good potential of biodegradation under specific conditions. Nevertheless, it is recommended to be careful about its concentration in effluent because toxic effects can appear.