Surfactants Efficiency on Pentachlophenol Contaminated Wastewater Enhanced by Pseudomonas Putida AJ 785569

Abstract This study has objectives to assess the effects of some surfactants on (1) the bacterial growth, (2) PCP (800 mgL -1 ) rate removal, and at last (3) biofilm development. Three different surfactants are used in this case as anionic (SDS), no anionic Tween 80 (TW80) and cationic (CTAB). The results improve that there was an adsorption of PCP by the bacterial cells of around 30 mg . L -1 and PCP removal of around 720 mgL -1 after seven days. It appeared that the surfactant adding affected the bacterial growth and reach a maximum of PCP removal with SDS addition with a value 676.66 mg L -1 in S.WW then CTAB and TW80. Biofilm formation in BHI with PCP showed a clear acceleration and enhancement of this activity with SDS addition. Besides, biofilm morphotype of selected strain appeared affected in form, density, and colour after different situations of stress caused by various surfactants or PCP.