Abstract
The effect of temperature on the biodegradation of linear alkylbenzene sulfonate (LAS) and alcohol ethoxylate (AE) was evaluated using method OECD 303 A, Confirmatory test (Husmann units). The experiments were performed using an initial surfactant concentration of 10 mg/L and working temperatures of 25, 15, and 9°C, keeping the biodegradation units inside a thermostatic chamber. In all cases, the removal of both surfactants tested, LAS and AE, was higher than 90%, regardless of the temperature used in the test. We observed that longer acclimation periods were needed by the microorganisms at lower temperatures.
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Abbreviations
- AE:
-
alcohol ethoxylate
- BiAS:
-
bismuth active substances
- cfu:
-
colony-forming units
- DO:
-
dissolyed oxygen
- DOC:
-
dissolved organic carbon
- EO:
-
ethylene oxide
- HPLC:
-
high-performance liquid chromatography
- LAS:
-
linear alkylbenzene sulfonate
- MBAS:
-
methylene-blue active substances
- MLSS:
-
mixed liquor suspended solids
- NOEC:
-
nonobserved effect concentration
- OECD:
-
Organisation for Economic Co-operation and Development
- SRT:
-
sludge retention time
- WWTP:
-
wastewater treatment plant(s)
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Prats, D., López, C., Vallejo, D. et al. Effect of temperature on the biodegradation of linear alkylbenzene sulfonate and alcohol ethoxylate. J Surfact Deterg 9, 69–75 (2006). https://doi.org/10.1007/s11743-006-0377-8
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DOI: https://doi.org/10.1007/s11743-006-0377-8