Malaysian Journal of Analytical Sciences Vol 19 No 1 (2015): 1 – 7

 

 

 

OPTIMIZATION STUDY FOR BUTANOL EXTRACTION FROM BUTANOL-WATER USING FATTY ACID METHYL ESTER (FAME) AS SOLVENT

 

(Kajian Pengoptimuman Pengekstrakan Butanol Daripada Campuran  Butanol-Air Menggunakan Asid Lemak Metil Ester (FAME) Sebagai Pelarut)

 

Nurul Izzati Ab Rahim , Mohd Irfan Hatim Mohamed Dzahir*, Wan Nurul Hidayah Wan Othman

 

School of Bioprocess Engineering,

Universiti Malaysia Perlis, Kompleks Pengajian Jejawi 3, 02600 Arau, Perlis, Malaysia

 

*Corresponding author: irfan@unimap.edu.my

 

 

Abstract

The oil crisis, warned the humanity’s depends on oil was not sustainable and recently, there are plenty of renewable resources had been developed. Much attention has been given to the solvent extraction process to separate butanol from butanol-water mixture using fatty acid methyl ester (FAME) as a solvent. In this respect, the use of FAME as a green solvent which are locally available has greater potential for butanol extraction process. Therefore, an experimental work has been carried out to study its feasibility as a potential solvent. A single stage extraction process as performed to evaluate the ability to achieve optimal extract butanol. The extraction process was carried out to evaluate the distribution coefficient of butanol with the effects of other parameters such as reaction temperature (50-70 ^oC) and butanol-water mixture to solvent ratio (1:1, 1:1.5, 1:2). The constant parameter is the stirring speed (300 rpm). Response Surface Methodology (RSM) in conjunction with the Central Composition Design (CCD) as employed to statistically evaluate and optimize the butanol extraction process. It was found that the distribution coefficient has achieved an optimum level of 1.92% at the following conditions: (i) butanol-water mixtures to solvent ratio (1:1.48) and (ii) reaction temperature (62.75 ^oC).

 

Keywords: liquid-liquid extraction, butanol separation, green solvent, FAME

 

Abstrak

Krisis pengurangan minyak, memberi amaran kebergantungan kepada minyak tidak akan berkekalan dan kini terdapat banyak sumber yang boleh diperbaharui telah dibangunkan. Tumpuan yang khusus diberikan kepada proses pengekstrakan pelarut untuk memisahkan butanol dari campuran butanol-air menggunakan metil ester asid lemak (FAME) sebagai satu pelarut. Oleh yang demikian, penggunaan FAME sebagai satu pelarut semula jadi dan mudah didapati di sini mempunyai lebih banyak potensi untuk proses pengekstrakan butanol. Lantaran itu, satu eksperimen telah dijalankan untuk mengkaji potensi FAME sebagai satu bahan pelarut. Satu proses pengekstrakan peringkat dijalankan untuk mengkaji keupayaan optimum pengunaan butanol. Proses pengekstrakan dijalankan untuk menilai pekali taburan butanol dengan kesan parameter  seperti suhu tindak balas dan campuran butanol-air kepada nisbah pelarut (1:1, 1:1.5, 1:2). Parameter yang  dimalarkan adalah kelajuan kacauan. Kaedah Tindakbalas Permukaan (RSM) bersama-sama dengan ‘Central Composition Design‘(CCD) dilaksanakan untuk menilai dan mengoptimumkan proses pengekstrakan butanol. Hasil kajian menunjukkan pekali taburan telah mencapai satu tahap optimum iaitu 1.92% di syarat-syarat berikut: (i) campuran butanol-air kepada nisbah pelarut (1:1.48) dan (ii)suhu tindak balas (62.75 ^oC).

 

Kata kunci: pengekstrakan Cecair-cecair tunggal, pemisahan butanol, pelarut semulajadi, FAME

 

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