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Received August 11, 2015
Accepted November 6, 2015
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Application of hollow fiber supported liquid membrane as a chemical reactor for esterification of lactic acid and ethanol to ethyl lactate
Department of Chemical Engineering, Faculty of Engineering and Industrial Technology, Silpakorn University, Nakhon Pathom 73000, Thailand
ramakul_p@su.ac.th
Korean Journal of Chemical Engineering, January 2016, 33(1), 8-13(6), 10.1007/s11814-015-0233-5
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Abstract
Hollow fiber supported liquid membrane was applied as a reactor to synthesize ethyl lactate from lactic acid. Lactic acid in the feed solution was extracted by tri-n-octylamine (TOA) and stripped by ethanol with p-toluene sulfonic acid acting as the catalyst to form ethyl lactate. Central composite design (CCD) was used to determine the significant factors and their interactions. The response surface was applied for optimization. An optimized yield of 30% was predicted and its validity was evaluated by comparison with experimental results at different concentrations of lactic acid in the feed solution, with good agreement achieved.
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Kocherginsky NM, Yang Q, Seelam L, Sep. Purif. Technol., 171, 53 (2007)
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Ura P, Prakorn R, Weerawat P, J. Ind. Eng. Chem., 11(6), 926 (2005)
Sunsandee N, Leepipatpiboon N, Ramakul P, Korean J. Chem. Eng., 30(6), 1312 (2013)
Sunsandee N, Ramakul P, Pancharoen U, Leepipatpiboon N, Sep. Purif. Technol., 116, 405 (2013)
Leepipatpiboon N, Pancharoen U, Ramakul P, Korean J. Chem. Eng., 30(1), 194 (2013)
Ramakul P, Supajaroon T, Prapasawat T, Pancharoen U, Lothongkum AW, J. Ind. Eng. Chem., 15(2), 224 (2009)
Gao C, Ma C, Xu P, Biotechnol. Adv., 29, 930 (2011)
Bennett JS, Charles KL, Miner MR, Heuberger CF, Spina EJ, Bartels MF, Foreman T, Green Chem., 11(2), 166 (2009)
Tsai SP, Datta R, Henry M, Halpern Y, Frank JR, Membrane Tehcnol., 109, 12 (1999)
Yankov D, Molinier J, Albet J, Malmary G, Kyuchoukov G, Biochem. Eng. J., 21, 63 (2004)
Manzak A, Tutkun O, Can. J. Chem. Eng., 89(6), 1458 (2011)
Scholler C, Chaudhuri JB, Pyle DL, Biotechnol. Bioeng., 42, 50 (1993)
Porter MC, Handbook of Industrial Membrane Technology, Noyes Publications, Park Ridge, New Jersey (1990).
Mok YS, Lee WK, Sep. Sci. Technol., 29(6), 743 (1994)
Montgomery DC, Design and Analysis of Experiments, Wiley (2013).
Kavak D, Demir M, Bassayel B, Anagun AS, Des. Water Treat., 51, 1712 (2013)
