Fipronil removal at various temperature and pollutant concentration by using Pseudomonas aeruginosa and Brevibacterium sp. in liquid media
K R Imaniar, T Tazkiaturrizki and A Rinanti*

Departement of Environmental Engineering, Faculty of Landscape Architecture and Environmental Technology, Universitas Trisakti, Jakarta, Indonesia

Abstract

Fipronil is one of the organochlorine pesticide that is persistent in the environment. Fipronil can be removed biologically by using bioremediation that utilizes the activity of microorganisms. This study aims to remove fipronil in Stone Mineral Salt solution (SMSs) media using Pseudomonas aeruginosa and Brevibacterium sp. with temperature and fipronil concentration as independent variables. Fipronil removal is carried out at a temperature of 20 - 45°C with a concentration of fipronil 20 - 70 mg/L. Based on the Gas Chromatography-Mass Spectrometry (GC-MS) test, optimum fipronil removal was obtained at 30°C for seven days with 40 mg/L of fipronil concentration. This shows that Pseudomonas aeruginosa and Brevibacterium sp. can remove fipronil with an efficiency of 90%, so this research can be continued to find out other physical parameters that affect fipronil removal in liquid media

Keywords: bioremediation, fipronil, Pseudomonas aeruginosa, Brevibacterium sp., GC-MS

Topic: Environmental Engineering