Journal of Surfactants and Detergents

, Volume 9, Issue 1, pp 69–75

Effect of temperature on the biodegradation of linear alkylbenzene sulfonate and alcohol ethoxylate

Authors

  • Daniel Prats
    • Department of Chemical EngineeringAlicante University
  • Carmen López
    • Department of Chemical EngineeringAlicante University
  • Diana Vallejo
    • Department of Chemical EngineeringAlicante University
  • Pedro Varó
    • Department of Chemical EngineeringAlicante University
    • Department of Chemical EngineeringAlicante University
Article

DOI: 10.1007/s11743-006-0377-8

Cite this article as:
Prats, D., López, C., Vallejo, D. et al. J Surfact Deterg (2006) 9: 69. doi:10.1007/s11743-006-0377-8

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.

Key Words

Activated sludgealcohol ethoxylatesbiodegradationlinear alkylbenzene sulfonatetemperature

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)

Copyright information

© AOCS Press 2006