OIL SLUDGE BIODEGRADATION USING BIOPILE REACTOR WITH ADDITIONS OF MICROBIAL CONSORTIUM, BULKING AGENT AND INORGANIC NUTRIENTNadia Safira, Wiwit Sri Yuliastuti, Aziz Purnomo Hakim, Agoes Soegianto, Fatimah, Sri Sumarsih, Hanif Yuliani and Ni’matuzahroh
Oil sludge is a form of hydrocarbon sludge that comes from oil refining industry, where sludge is obtained from the result of oil drilling and from the sediment in the tank. Biopile is one of many attempts to prevent oil pollution. This study was to know the effects of variation of adding microbial consortium, bulking agent(rice husk), inorganic nutrient and length of incubation time on total microbial (CFU/g) and reduction of residual weight of hydrocarbon in oil sludge (g/g) on biodegradation using biopile reactor. Parameters measured were total microbial (CFU/g), reduction of residual weight of hydrocarbon in oil sludge which were measured with gravimetric method (g/g), and pH that measured using soil tester. The results showed that variation of treatments and incubation time had an effect on total of microbial count (CFU/g) and residual hydrocarbon in oil sludge (g/g). The variation that reached the highest biodegradation percentage was V3 with value of 44.84% on day 21st with log of total microbial count as much as 8.71 (CFU/g), final TPH (Total Petroleum Hydrocarbon) 0.22 (g/g), and pH 7.36.