Ethanol separation using Sepabeads207 adsorbent

• Main Authors: Beden, M. A., Zaini, M. A. A., Abdullah, T. A. T.
• Format: Article
• Language: English
• Published: Penerbit UTM Press 2017
• Subjects: QD Chemistry
• Online Access: http://eprints.utm.my/id/eprint/76700/1/TuanAmranTuan2017_EthanolSeparationusingSepabeads207.pdf; http://eprints.utm.my/id/eprint/76700/; https://www.scopus.com/inward/record.uri?eid=2-s2.0-85021136589&doi=10.11113%2fjt.v79.9900&partnerID=40&md5=5711067a3a5f589aad749ede4f0ca865
• Institution: Universiti Teknologi Malaysia

This work was aimed at evaluating the ethanol separation using Sepabeads207 adsorbent. A 10 wt% of ethanol solution was used as a model fermentation broth. The separation of ethanol from the solution was performed in a tube containing Sepabeads207 at different operating conditions: temperatures, 20 to 40°C; solution pH, 4 to 7; and contact times, 5 to 25 minutes. Recovery of ethanol via stripping was studied between 15 and 35 minutes, and at different air temperatures of 80 to 95°C. The concentration of liquid ethanol was measured using gas chromatography and refractometer. A higher ethanol concentration by Sepabeads207 adsorption was obtained at 20°C and solution pH 4 for 5 minutes, while the recovery was performed better at 80°C for 15 minutes. By applying these conditions, 10 wt% of ethanol in the solution was concentrated to 46 wt%. The ethanol adsorption data are: i). capacity of 0.22 g ethanol/g adsorbent, ii). selectivity of 7.75 (g ethanol/g water (adsorbed)) / (g ethanol/g water (original solution)), and iii). efficiency of 100%. Sepabeads207 is a promising adsorbent for ethanol separation from the dilute ethanol solution.