Study on stripping phase conditions on the levulinic acid extraction using supported liquid membrane

V., Rajendaran and S. M., Saufi and M. A. K., Zahari and A. W., Mohammad (2019) Study on stripping phase conditions on the levulinic acid extraction using supported liquid membrane. Journal of Mechanical Engineering and Sciences (JMES), 13 (3). 5625 -5636. ISSN 2289-4659 (print); 2231-8380 (online). (Published)

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Supported liquid membrane (SLM) is the most effective technique to extract and recover the desired product from the biomass products in a single step. The study of the operation parameters in SLM system is very important to improve the yield of extraction and recovery of the product. In this study, different types of stripping agents such as sodium hydroxide (NaOH), sodium carbonate, hydrochloric acid, trimethylamine, and water were tested in the SLM system to extract levulinic acid (LA). By using 0.3 M trioctylamine in 2-ethyl-1-hexanol as liquid membrane phase, it was found that NaOH was the best stripping agent to extract LA. The concentration of the NaOH stripping agent was varied from 0.25 M to 1 M. The best stripping agent concentration was 0.5 M, which gave an LA extraction of 86% from a 10 g/L LA aqueous solution. The flow rate of the feed and stripping phase was investigated from 25 mL/min to 125 mL/min. SLM operated at 75 L/min was found to be adequate in reducing the boundary layer thickness at both sides of the SLM phases without any leakage of the liquid membrane and breakage of the matrix support. At the best stripping condition, 89% of the LA was extracted using 0.5 M NaOH that operated at flow rate of 75 mL/min.

Item Type: Article
Additional Information: Indexed by Scopus
Uncontrolled Keywords: Supported liquid membrane; Liquid extraction; Stripping phase; Levulinic acid
Subjects: Q Science > QD Chemistry
T Technology > TP Chemical technology
Faculty/Division: Faculty of Chemical & Natural Resources Engineering
Institute of Postgraduate Studies
Depositing User: Mrs Norsaini Abdul Samat
Date Deposited: 21 Nov 2019 04:30
Last Modified: 25 Oct 2021 07:40
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