Blended chitosan and poly (vinyl alcohol) membranes for the prevaporation of methanol and methyl tert-butyl ether
Also available in printed version : TP248.25.M46 N674 2009 raf
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| Format: | Master's thesis |
| Language: | English |
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Universiti Teknologi Malaysia
2025
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| Online Access: | https://utmik.utm.my/handle/123456789/105663 |
| Abstract | Abstract here |
| _version_ | 1854975116359761920 |
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| author | Norhaslina Mohd. Sakri |
| author2 | Ghazali Mohd Nawawi, supervisor |
| author_facet | Ghazali Mohd Nawawi, supervisor Norhaslina Mohd. Sakri |
| author_sort | Norhaslina Mohd. Sakri |
| description | Also available in printed version : TP248.25.M46 N674 2009 raf |
| format | Master's thesis |
| id | utm-123456789-105663 |
| institution | Universiti Teknologi Malaysia |
| language | English |
| publishDate | 2025 |
| publisher | Universiti Teknologi Malaysia |
| record_format | dspace |
| record_pdf | Abstract |
| spelling | utm-123456789-1056632025-08-21T13:34:00Z Blended chitosan and poly (vinyl alcohol) membranes for the prevaporation of methanol and methyl tert-butyl ether Norhaslina Mohd. Sakri Ghazali Mohd Nawawi, supervisor Membrane separation Polyvinyl alcohol Membrane filters Also available in printed version : TP248.25.M46 N674 2009 raf In this research project, blended chitosan/poly(vinyl alcohol) (PVA) membranes were produced by mixing PVA and chitosan solutions. Chitosan (CS) was firstdissolved in acetic acid aqueous solution before PVA solution was added. The mixture was then cured at room temperature. The modified composite membrane was preparedby coating the mixture of chitosan and PVA solution onto the porous polysulfone membrane by the solution casting technique. The porous polysulfone substrate wasprepared via phase inversion process from a casting solution containing 12 wt% polysulfone, 11 wt% polyethylene glycol and 77 wt% N,N- dimethylacetamide. Theweight percent of chitosan in the membrane was varied from 20 wt. % to 100 wt. % while the membrane thickness was in the range of 15-30 ?m. The unmodified andmodified composite membranes with PVA were used in pervaporation separation of methanol/methyl-tert-butyl ether (MTBE) mixture. The swelling degree and the totalflux increased with increasing chitosan content in the membranes. 30 wt. % of methanol (MeOH) in feed was chose since it gave the optimal overall pervaporation characteristics in terms of flux and separation factor. The membrane containing chitosan 20 wt. % to 40 wt. % performed the best. At operating temperature of 50 oC for 20 wt % to 40 wt % of chitosan, the fluxes obtained are at 52.28 g/m2.hr and 66.92 g/m2.hr with the separation factors of 81.00 and 53.22 respectively. The effect of temperature on flux followed the Arrhenius relationship. The membrane showed excellent performance for separation of MeOH/MTBE mixture when the quantity of MeOH in feed is small. It is avery suitable process for the recovery purpose in order to remove excess MeOH in the MTBE system. hisham UTM 115 p. Thesis (Sarjana Kejuruteraan (Kimia)) - Universiti Teknologi Malaysia, 2009 2025-04-14T10:32:55Z 2025-04-14T10:32:55Z 2009-05 Master's thesis https://utmik.utm.my/handle/123456789/105663 valet-20140417-115031 vital:69238 ENG Fullview Closed Access UTM Complete Submitted Completion application/pdf Universiti Teknologi Malaysia |
| spellingShingle | Membrane separation Polyvinyl alcohol Membrane filters Norhaslina Mohd. Sakri Blended chitosan and poly (vinyl alcohol) membranes for the prevaporation of methanol and methyl tert-butyl ether |
| thesis_level | Master |
| title | Blended chitosan and poly (vinyl alcohol) membranes for the prevaporation of methanol and methyl tert-butyl ether |
| title_full | Blended chitosan and poly (vinyl alcohol) membranes for the prevaporation of methanol and methyl tert-butyl ether |
| title_fullStr | Blended chitosan and poly (vinyl alcohol) membranes for the prevaporation of methanol and methyl tert-butyl ether |
| title_full_unstemmed | Blended chitosan and poly (vinyl alcohol) membranes for the prevaporation of methanol and methyl tert-butyl ether |
| title_short | Blended chitosan and poly (vinyl alcohol) membranes for the prevaporation of methanol and methyl tert-butyl ether |
| title_sort | blended chitosan and poly vinyl alcohol membranes for the prevaporation of methanol and methyl tert butyl ether |
| topic | Membrane separation Polyvinyl alcohol Membrane filters |
| url | https://utmik.utm.my/handle/123456789/105663 |
| work_keys_str_mv | AT norhaslinamohdsakri blendedchitosanandpolyvinylalcoholmembranesfortheprevaporationofmethanolandmethyltertbutylether |