PENGARUH EPOKSIDASI MINYAK BIJI NYAMPLUNG (calophyllum inophyllum L) DAN KOSURFAKTAN TERHADAP KINERJA SODIUM LIGNOSULFONAT (SLS) UNTUK ENHANCED OIL RECOVERY (EOR)

FITRIANI, Prof. Ir. Suryo Purwono, MA.Sc., Ph.D;Ahmad Tawfiequrrahman Y. ST, MT, D.Eng

2016 | Tesis | S2 Teknik Kimia

Rendahnya kemampuan produksi minyak bumi Indonesia disebabkan karena lapangan minyak Indonesia sebagian besar merupakan sumur-sumur tua (mature fields), sehingga produksi minyaknya rendah. Dalam rangka menanggulangi turunnya produksi minyak bumi, telah dikembangkan teknologi Enhanced Oil Recovery (EOR). Salah satu teknologi EOR yaitu injeksi kimia yang dapat berupa surfaktan. Senyawa epoksida dibuat dari minyak biji nyamplung (callophylum inophyllum L) yang terlebih dahulu disabunkan. Reaksi epoksidasi dilakukan secara in-situ yang terdiri dari asam asetat dan hidrogen peroksida dan tahap selanjunya adalah reaksi asam perasetat dengan sabun. Reaksi dilakukan dalam reaktor batch yang dilengkapi pengaduk dengan variasi suhu 30, 40, 50, dan 600C dengan variasi waktu reaksi selama 15, 30, 60, dan 90 mneit. Model kinetika reaksi epoksidasi diasumsikan mengikuti model pseudo-first dan berdasarkan persamaan Arrhenius diperoleh konstanta kecepatan reaksi epoksidasi minyak biji nyamplung adalah 16333,93 exp (-(45,96 kJ/mol)/T). Hasil penelitian menunjukkan bahwa penambahan 1-oktanol memberikan hasil yang lebih baik dibandingkankan 1-dekanol, dengan nilai IFT sebesar 2,2 x 10-3 mN/m. Kata kunci : Sodium Lignosulfonat (SLS), minyak biji nyamplung, epoksidasi, kosurfaktan, tegangan antarmuka, Enhanced Oil Recovery (EOR).

The low capacity of petroleum productivity in Indonesia is caused by the majority of oil fields in Indonesia are mature fields with very low oil production. In order to overcome the declining in petroleum production, Enhanced Oil Recovery (EOR) technology is done. One of the EOR technology is chemical injection in the form of surfactant. The compounds were made from oil nyamplung seeds (Callophylum inophyllum L) which has been saponified beforehand. Epoxidation reaction was carried out in in-situ process, consisting of acetic acid and hydrogen peroxide, then followed by reaction between peracetic acid and soap. The reaction was conducted in a batch reactor equipped with a stirrer with the temperature variations of 30, 40, 50, and 600C and the reaction time variations for 15, 30, 60 and 90 minutes. Epoxidation reaction kinetics model was assumed to be the pseudo-first model, and based on the Arrhenius equation, it was obtained that the constant of epoxidation reaction rate of nyamplung oil was 16333.93 exp(-(45.96 kJ/mol)/T). The results proved that the replenishment of 1-octanol has provided better results when compared with 1-dekanol, with IFT of 2.2 x 10-3 mN / m. Keywords: Sodium Lignosulfonate (SLS), nyamplung seed oil, epoxidation, co-surfactant, interfacial tension, Enhanced Oil Recovery (EOR).

Kata Kunci : Sodium Lignosulfonate (SLS), nyamplung seed oil, epoxidation, co-surfactant, interfacial tension, Enhanced Oil Recovery (EOR).