Biodegradation Study of Linear Alkylbenzensulfonates (LAS) in Tama River Sediment by Using Model Test Systems

Abstract

Biodegradation of linear alkylbenzensulfonate (LAS) in Tama River sediment was studied using two model test systems.
LAS consentration in the sediment decreased gradually at initial stage of the experiment, followed by linearly decreasing. Michaelis-Menten model was applied to the linear portion of the biodegradation curve and the maximum rates, V_max, for the degradation of total LAS and LAS constituents were estimated.
V_max values of total LAS were 0.689 and 0.792 mg·kg^-1·d^-1 for two model tests. V_max of LAS constituent became greater as the number of alkyl carbon in LAS decreased.