Continuous cultivation of <scp><i>Debaryomyces hansenii</i></scp> (LAF‐3 10 U) on dodecane in synthetic desalter effluent at varying dilution rates on dodecane

Desalter effluent (DE) is typically discharged into a petroleum wastewater treatment plant, but its high salt concentration deteriorates the biological treatment. This study used various dilution rates to investigate of synthetic DE containing dodecane under saline conditions using halotolerant yeast, Debaryomyces hansenii, determine optimum substrate for use in continuous stirred-tank reactors (CSTRs). A literature review indicated that this was first examine D. hansenii CSTR system. At low concentration, did not inhibit growth, and experimental data approached Monod model, with μmax Ks selected as 0.08 h−1 1575 mg L−1, respectively. The removal chemical oxygen demand (95.7% 85%) obtained at 0.007 0.026 d−1. Using system appeared be sustainable approach DE. Scale-up these laboratory findings industrial scale required confirm can treated equalization filtration tanks bioreactor. Adjusting rate provide sufficient time biodegradation hydrocarbon from by yeasts like hansenii.