BIOREMEDIASI LAHAN TERCEMAR MINYAK TANAH DENGAN METODA BIOPILE

Abstract

Biopile is one of several bioremediation methods in compost production process. A pile of compost in general is used as loosening material to increase porosity by providing better permeability. The aim of this research were to remove hydrocarbon contaminant in soils, and to identify soil microorganisms, which degraded the hydrocarbon using compost biopile technique. Kerosene was used as the hydrocarbon compound. Reactors, which were equipped with aerators, were prepared for conducting this research. Variations of compost addition were 15%, 20%, 25%, and 30% of the reactor volume, whereas the microorganism composition were 8%, 10%, 12%, and 14% of the reactor volume. Environmental condition of the reactor was maintained at pH values of 6-9, temperature of 27-30ºC, and soil humidity of 50-75%, with air supply of 2 kPa. The results of this research showed that the optimal removal of Total Petroleum Hydrocarbon (TPH) was obtained at compost addition variation of 25% with microorganism composition of 14%. The optimum TPH removal efficiency was 84.08%. The TPH removal occurred optimally in temperature range of 28-30ºC, pH range of 6.61-6.94, and humidity range of 48.83-76.58%. Microorganisms which degraded the hydrocarbon compound comprised Micrococcus (family Micrococcaceae), Spirillum (family Spirillaceae) and Bacillus (family Bacillaceae).