Biodegradation Kinetic Studies for the Removal of Iso Propyl Alcohol (IPA)

Iso propyl alcohol (IPA) is a toxic volatile organic compound (VOC) that is emitted from various paint, pharmaceutical, lithography, and rubber manufacture industries. These emissions may lead to an adverse effect on air quality and thus endanger public health and welfare. The most serious requirements for removing VOCs from waste gases in recent years necessitate the development of innovative and cost-effective treatment alternatives. The aerobic biodegradation of IPA by an acclimated mixed culture obtained by sewage treatment plant is carried out in this study for the range of 200 – 700 mg/L of initial IPA concentration. Substrate inhibition occurred for more than 300 mg/L of IPA concentration. The results obtained in present study are fitted with the Haldane model with coefficient of determination (R 2 = 0.989). The biodegradation rate kinetic parameters are obtained for zero order and three and half order kinetic models.