SURFACTANT UTILIZATION IN OIL SLUDGE BIODE GRADATION USING SLURRY BIOREACTOR  

Oleh:

Syafrizal ; Kussuryani, Yanni ; Rani, Devitra Saka

Jenis: Article from Journal - ilmiah nasional
Dalam koleksi: Lemigas Scientific Contributions to Petroleum Science & Technology vol. 32 no. 03 (Dec. 2009), page 201.
Topik: Nonionic Surfactant; Oil Sludge; Biodegradation; Bioavailability; Slurry Bioreactor

Ketersediaan

Perpustakaan PKPM Nomor Panggil: L15.1 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

Oil sludge from petroleum industry ejjluent is classified as hazardous waste and re­quired special treatment before discharge to the environment. Biodegradation using bacte­rial activities is a general treatment for oil sludge processing. However, the bacterial abil­ity in oil sludge biodegradation is blocked by non-aqueous phase liquid of oil sludge. Two possible ways of enhancing the bioavailability of oil sludge are surfactants application and slurry bioreactors system. The objective of this study is to obtain the surfactant which can increase oil sludge biodegradation using simple slurry bioreactor. The surfactant se­lection obtained Emulsogen LP (58% effectiveness) which was examined based on HLB value, nonionic character, and surfactant effectiveness. Emulsogen LP is readily biode­gradable which reached 93% biodegradability in 15 days. The biodegradation test showed that Emulsogen LP addition on its Critical Micelle Concentration (10 mg/L) enhanced oil sludge biodegradation in 3 bacterial cultures of Pseudomonas aeruginosa, Bacillus subtilis, and Actinobacter baumanni after 48 hours. By surfactant addition, oil sludge biodegrada­tion reached 37-49% whereas without surfactant addition it only reached 28-33%. The highest oil sludge biodegradation was obtained in P aeruginosa cultures with Emulsogen LP addition (49%). The surfactant addition had no effect on microbial growth. Moreover, P aeruginosa population was increased by surfactant addition.

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