A Hollow-Fiber Membrane Extraction Process for Recovery and Separation of Lactic Acid from Aqueous Solution

2004 ◽  
pp. 671-688
Author(s):  
Hanjing Huang ◽  
Shang-Tian Yang ◽  
David E. Ramey
Keyword(s):  
Aqueous Solution ◽  
Lactic Acid ◽  
Hollow Fiber ◽  
Hollow Fiber Membrane ◽  
Extraction Process ◽  
Membrane Extraction ◽  
Fiber Membrane

scholarly journals Effect of coagulation bath temperature during preparation of PES hollow fiber supported liquid membrane for acetic acid removal

2017 ◽  
Vol 19 ◽  
pp. 118 ◽  
Author(s):  
Sathiya Sanmugam ◽  
Norlisa Harruddin ◽  
Syed M Saufi
Keyword(s):  
Aqueous Solution ◽  
Acetic Acid ◽  
Hollow Fiber ◽  
Liquid Membrane ◽  
Hollow Fiber Membrane ◽  
Bath Temperature ◽  
Supported Liquid Membrane ◽  
Coagulation Bath ◽  
Fiber Membrane ◽  
Coagulation Bath Temperature

<p>Acetic acid is a byproduct of acid hydrolysis of biomass during sugar recovery step in biofuel production. Acetic acid can inhibit the enzyme used during fermentation of sugar to the ethanol. Hollow fiber supported liquid membrane (SLM) was used in this study to remove acetic acid from aqueous solution. Liquid membrane was formulated using trioctylamine and 2-ethyl hexanol as a carrier and solvent, respectively. The hollow fiber membrane support was prepared from 15 wt.% polyethersulfone, 42.5 wt.% polyethyleneglycol 200 and 42.5 wt.% dimethylacetamide. The effect of coagulation bath temperature (CBT) at 30<sup>º</sup>C, 40<sup>º</sup>C and 50<sup>º</sup>C during hollow fiber membrane spinning process was investigated. The porosity of the membrane increased as the CBT increased. The porosity of the membrane prepared using CBT of 30ºC, 40<sup>º</sup>C and 50<sup>º</sup>C were 35.7%, 46.7% and 61.6%, respectively. SLM process using hollow fiber membrane prepared at 50ºC of coagulation bath was able to remove 52% of acetic acid from the aqueous solution.</p><p>Chemical Engineering Research Bulletin 19(2017) 118-122</p>

scholarly journals Concentration of ethanol from its aqueous solution by pervaporation using porous polypropylene hollow-fiber membrane.

MEMBRANE ◽  
1986 ◽  
Vol 11 (4) ◽  
pp. 231-238 ◽  
Author(s):  
Haruhiko OHYA ◽  
Hiroaki MATSUMOTO ◽  
Yohichi NEGISHI ◽  
Kanji MATSUMOTO
Keyword(s):  
Aqueous Solution ◽  
Hollow Fiber ◽  
Hollow Fiber Membrane ◽  
Fiber Membrane

scholarly journals Ethanol Recovery from Low-Concentration Aqueous Solutions Using Membrane Contactors with Ionic Liquids

2015 ◽  
Vol 22 (4) ◽  
pp. 565-575 ◽  
Author(s):  
Karina Snochowska ◽  
Michał Tylman ◽  
Władysław Kamiński
Keyword(s):  
Ionic Liquid ◽  
Aqueous Solutions ◽  
Hollow Fiber ◽  
Ethanol Concentration ◽  
Hollow Fiber Membrane ◽  
Large Mass ◽  
Membrane Extraction ◽  
Fiber Membrane ◽  
Membrane Contactors ◽  
Extracting Solvent

Abstract Recovery of alcohols from diluted aqueous solutions is highly energy-intensive. In order to reduce the costs of concentration of alcohols, membrane processes (including membrane extraction) are used. This paper reports the results of ethanol concentration from diluted aqueous solutions using a hollow fiber membrane contactor with ionic liquid. The studies were performed using a contactor with microporous hollow fiber membranes. The membrane creates a barrier between the feed and extracting solvent, also providing a large mass transfer area. In the process, selected ionic liquid presenting different selectivity towards ethanol was used as extractant. The experiments were performed with feed concentrations of ethanol ranging from 1 to 5 wt.% and various feed flow rates ranging from 1 to 8 dm3/h.

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