Polyion Complex Chitosan Membrane Consisting of Sodium Alginate/Chitosan for the Pervaporation Separation of Methanol/Methyl tert-butyl Ether Mixtures

The polyion complex (PIC) composite membranes consisting of chitosan (CS) and sodium alginate (SA) were prepared for the separation of methanol/methyl tert-butyl ether (MTBE) mixtures via pervaporation process. Membrane morphologies showed that CS and SA were homogenously intermixed for all blended ratio tested. Swelling characteristics observed all membranes were readily swelled in the solution mixtures containing more methanols. Separation performance of the membranes via pervaporation was performed on the effect of SA composition in the membrane blend, effect of MTBE concentration in the feed and effect of feed temperature. Overall separation performances showed that the membranes were highly permselective towards methanol due to the affinity and polarity for all the studied parameters.

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Pervaporation separation of MTBE (methyl tert-butyl ether) and methanol mixtures through polyion complex composite membranes consisting of sodium alginate/chitosan

Journal of Membrane Science ◽

10.1016/s0376-7388(00)00339-2 ◽

2000 ◽

Vol 174 (1) ◽

pp. 1-15 ◽

Cited By ~ 55

Author(s):

Sang-Gyun Kim ◽

Gyun-Taek Lim ◽

Jonggeon Jegal ◽

Kew-Ho Lee

Keyword(s):

Sodium Alginate ◽

Composite Membranes ◽

Methyl Tert Butyl Ether ◽

Butyl Ether ◽

Polyion Complex ◽

Tert Butyl ◽

Pervaporation Separation

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Composite Chitosan Membranes for the Separation of Methanol/methyl tert-butyl Ether Mixtures

Jurnal Teknologi ◽

10.11113/jt.v67.2729 ◽

2014 ◽

Vol 67 (2) ◽

Cited By ~ 1

Author(s):

Mohd Ghazali Mohd Nawawi ◽

Zafifah Zamrud

Keyword(s):

Surface Morphology ◽

Composite Membranes ◽

Operating Conditions ◽

Methanol Concentration ◽

Methyl Tert Butyl Ether ◽

Optimum Operating ◽

Butyl Ether ◽

Tert Butyl ◽

Separation Factors ◽

Swelling Characteristics

Composite membranes from chitosan blended with different ratios of chitosan were developed for the pervaporation of methanol/methyl tert-butyl ether mixtures. The composite membranes were characterized for surface morphology and sorption. Surface morphology showed chitosan and PVA were homogenously blend for all chitosan composition. Swelling characteristics of composites membrane were affected by methanol concentration as well as chitosan composition in the blend. Increasing feed temperatures and methanol concentration in the feed in pervaporation increased the flux and decreased the separation factor. The composite membranes containing 20 to 40 wt% chitosan was chosen as the preferred membrane formulation to yield fluxes ranging from 50 to 70 g/m2hr with separation factors ranging from 55 to 80 at optimum operating conditions of 30 wt% methanol in the feed and feed temperature of 50 0C.

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Blended Chitosan and Polyvinyl Alcohol Membrane for Pervaporation Separation Methanol/Methyl tert-Butyl Ether Mixture. (II) Effect of Operating Parameters

Jurnal Teknologi ◽

10.11113/jt.v65.1276 ◽

2013 ◽

Vol 65 (1) ◽

Author(s):

M. G. Mohd Nawawi ◽

Zafifah Zamrud ◽

Z. Idham ◽

O. Hassan ◽

N. Mohd Sakri

Keyword(s):

Polyvinyl Alcohol ◽

Separation Factor ◽

Composite Membranes ◽

Methyl Tert Butyl Ether ◽

Butyl Ether ◽

Blend Membrane ◽

Membrane Flux ◽

Ether Mixture ◽

Feed Temperature ◽

Pervaporation Separation

Blend chitosan and polyvinyl alcohol (PVA) composite membranes were developed by mixing PVA and chitosan solutions at appropriate ratios. Pervaporation separation of the membrane was tested for methanol and MTBE mixture at different feed concentrations and temperature. The pervaporation performances were studied and evaluated and compared to the composite chitosan membrane. Flux increased with the increasing concentration of methanol in the feed. Separation factor was highest for the 20 wt% chitosan-containing blend membrane. The blend membrane containing 20-40 wt% of chitosan at feed temperature of 50⁰C exhibited permeation flux in between 52.28 g/m2.hr to 66.92 g/m2.hr with the separation factor of 53.22 to 81.00.

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