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All Journal Scientific Contributions Oil and Gas LEMBARAN PUBLIKASI MINYAK DAN GAS BUMI (LPMGB)
Yanni Kussuryani
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Chemical Engineering, Chemistry & Bioengineering Energy

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EFFECT OF DIETANOLAMIDE (DEA) SURFACTANT ADDITION AND DEEP-SEA BACTERIA ACTIVITIES ON THE BIODEGRADABILITY OF ARTIFICIAL OILY WASTEWATER IN SEAWATER MEDIA Syafrizal Syafrizal; Rendy Budi Prastiko; Tri Partono; Yanni Kussuryani
Scientific Contributions Oil and Gas Vol 41 No 2 (2018)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.41.2.338

Abstract

Marine oil spills have bad impacts on the marine biota. Oil spill mitigation that is currently safe, effi cient, relatively cheap and easy to implement is bioremediation, that is degradation of oil spills biologically using microorganisms. Petroleum will be more easily dispersed in water when surfactants are added. The surfactants have the ability to increase the bioavailability of petroleum to facilitate bacteria contact with carbon sources as their feed. This study was intended to test the effect of addition of diethanolamide (DEA) surfactants to improve the ability of bacteria to degrade hydrocarbon compound in the seawater media. The biodegradation experiment was conducted in 8-liter seawater media and the ability of DEA surfactants to reduce surface tension, oil content, pH and nutrients on days 0, 1, 3, 6 and 10 were observed. GC-MS analysis was conducted to detect chemical component changes in petroleum. A bacterial consortium of Enterobacter sp., Pseudomonas sp., and Raoultella sp. was utilized. The oil was degraded up to 65.52% with biodegradation rate k = -0.1054 t in the media added with DEA surfactants. The aliphatic fraction detected was C17-C31 n-alkane compound and after biodegradation it became C20- C31. The results showed that DEA surfactants were able to improve the ability of bacterial consortium to degrade petroleum.
Surfactant Utilization In Oil Sludge Biode Gradation Using Slurry Bioreactor Syafrizal Syafrizal; Devitra Saka Rani; Yanni Kussuryani
Scientific Contributions Oil and Gas Vol 32 No 3 (2009)
Publisher : Testing Center for Oil and Gas LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/SCOG.32.3.851

Abstract

Oil sludge from petroleum industry effluent is classified as hazardous waste and requiredspecial treatment before discharge to the environment. Biodegradation using bacterialactivities is a general treatment for oil sludge processing. However, the bacterial abilityin oil sludge biodegradation is blocked by non-aqueous phase liquid of oil sludge. Twopossible 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.
Studi Microbial Enhanced Oil Recovery Skala Laboratorium Dan Penerapannya Di Lapangan Minyak Yanni Kussuryani
Lembaran publikasi minyak dan gas bumi Vol 50 No 1 (2016)
Publisher : BBPMGB LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/LPMGB.50.1.730

Abstract

Microbial Enhanced Oil Recovery (MEOR), merupakan teknologi yang dapat meningkatkan perolehan minyak dengan memanfaatkan aktivitas mikroba. Kegiatan penelitian MEOR dimulai dari isolasi dan identifi kasi mikroba; uji tabung guna menentukan mikroba dan nutrisi yang cocok untuk reservoir tertentu; uji Microbial Core Flooding/MCF dan uji coba MEOR di lapangan. Melalui uji tabung dan MCF, telah diperoleh mikroba dan nutrisi potensial yaitu kultur campuran dari sumur LDK 230 dengan starter KKL 11 dan medium M4 plus. Namun untuk uji coba lapangan berbagai faktor seperti kesesuaian antara karakteristik reservoir, kinerja mikroba dalam menghasilkan bioproduk, dan kondisi operasi masih perlu dipertimbangkan untuk keberhasilan teknologi MEOR, sehingga dapat diimplementasikan untuk peningkatkan perolehan minyak.
PRODUKSI BIOBUTANOL SEBAGAI BAHAN BAKAR TERBARUKAN MELALUI PROSES FERMENTASI Yanni Kussuryani; Devitra Saka Rani
Lembaran publikasi minyak dan gas bumi Vol 49 No 2 (2015)
Publisher : BBPMGB LEMIGAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29017/LPMGB.49.2.1193

Abstract

Selama ini, proses Hydrodesulphurization (HDS) sebagai unit pengurangan kadar sulfur yangada di kilang belum mampu menghilangkan sulfur bermolekul besar seperti diBenzothiophenedan derivatifnya seperti 4,6-dimethydiBenzothiophene (4,6-DMDBT). Pada penelitian ini, prosesdesulfurisasi secara oksidatif (oxidative desulphurization, ODS) dengan menggunakan katalis TiMCM-41C dan Ti-MCM-41S dipelajari untuk menurunkan kandungan sulfur pada proses pembuatanBBM. Penelitian ini terdiri dari beberapa tahapan, yaitu pembuatan katalis, karakterisasi katalis,uji coba proses ODS skala laboratorium dan analisis produk proses ODS. Hasil Uji BET SurfaceArea menunjukkan bahwa katalis Ti-MCM-41C dan Ti-MCM-41S memiliki diameter pori ratarata 27.92 Ã… dan 27.10 Ã… sehingga telah memenuhi spesififi kasi sebagai katalis mesopori. Kinerjakedua katalis dalam proses ODS skala laboratorium cukup tinggi dilihat dari terjadinya penurunankandungan senyawa sulfur yakni sebesar 83.98% dengan menggunakan Ti-MCM-41C dan 89.82%untuk Ti-MCM-41S
Co-Authors Devitra Devitra Saka Rani Devitra Saka Rani Dhiti Adiya Hanupurti Rendy Budi Prastiko Rino Nirwawan syafrizal Syafrizal Syafrizal Tri Partono