(For USM Staff/Student Only)

EngLib USM > Ω School of Chemical Engineering >

Performance of poly(vinyl alcohol) asymmetric membrane incorporated with graphene oxide for pervaporation dehydration of ethanol aqueous solution

Performance of poly(vinyl alcohol) asymmetric membrane incorporated with graphene oxide for pervaporation dehydration of ethanol aqueous solution / Muhammad Zuber Al Awwam Mustapa Kamal
Menggunakan kaedah penyongsangan fasa dan penuangan larutan, membrane polivinil alkohol/polyvinylidene fluorida (PVA/PVDF) yang digabungkan dengan graphene oksida (GO) telah disediakan dan dibandingkan dengan membran PVA/PVDF yang tulen. Membran yang terhasil telah dicirikan dengan menggunakan pengimbasan elektron mikroskopi (SEM), ujian tegangan mekanikal, dan ujian darjah pengembangan. Prestasi membran tersebut telah dikaji terhadap proses penyejattelapan dalam dehidrasi 95wt% larutan akueus etanol. Hasil kajian menunjukkan bahawa darjah pengampulan GO ke dalam membran PVA/PVDF meningkatkan jumlah fluks yang meresap dengan 296.6 g/m2.h berbanding 257.5 g/m2.h yang dicapai oleh membran PVA/PVDF tulen. Kajian lanjut mengenai sampel telapan telah menunjukkan bahawa sampel yang menelap melalui GO-PVA/PVDF membran telah mencapai faktor pemisahan yang lebih tinggi iaitu 557.6, lebih kurang dua kali ganda yang diperolehi oleh membran PVA/PVDF tulen dengan 249.5 sahaja. Oleh itu, keputusan ini membawa kepada indeks pemisahan penyejattelapan (PSI) yang lebih tinggi dicapai oleh membrane GO-PVA/PVDF berbanding membran PVA/PVDF tulen dengan masing masing 159,925 g/m2.h dan 59,690 g/m2.h. Kesimpulannya, keputusan ini memanifestasi penggabungan GO ke dalam membran dalam mencapai keseimbangan diantara jumlah penelapan fluks dan factor pemisahan, sekali gus meningkatkan prestasi membran terhadap proses penyejattelapan. _______________________________________________________________________________________________________ Using phase inversion and solution casting method, polyvinyl alcohol/polyvinylidene fluoride (PVA/PVDF) incorporated with graphene oxide (GO) membrane was prepared and compared with pure PVA/PVDF membranes. The resultant membranes were characterized by using scanning electron microscopy (SEM), mechanical tensile test, and degree of swelling. The resultant membranes performance were studied on the pervaporation of dehydration of 95wt% ethanol aqueous solution. The results showed that the incorporation of GO sheets onto the PVA/PVDF membrane increased the total permeate flux with 296.6 g/m2.h as compared to 257.5 g/m2.h achieved by pure PVA/PVDF membrane. Further characterization on the permeate samples showed that the permeate through GOPVA/ PVDF membrane exhibited higher separation factor of 557.6, approximate doubled the value obtained by pure PVA/PVDF membrane with 249.5 only. Thus, this lead to higher pervaporation separation index obtained by GO-PVA/PVDF membrane as compared pure PVA/PVDF membrane with 159,925 g/m2.h and 59,690 g/m2.h respectively. In conclusion, the incorporation of GO sheets onto the membrane capable to overcome the trade-off between the total permeation flux and separation factor, thus enhance the overall performance of the pervaporation process.
Contributor(s):
Muhammad Zuber Al Awwam Mustapa Kamal - Author
Primary Item Type:
Final Year Project
Identifiers:
Barcode : 00003107164
Accession Number : 875007284
Language:
English
Subject Keywords:
polyvinyl alcohol/polyvinylidene fluoride; graphene oxide; pervaporation process
First presented to the public:
5/1/2017
Original Publication Date:
4/27/2018
Previously Published By:
Universiti Sains Malaysia
Place Of Publication:
School of Civil Engineering
Citation:
Extents:
Number of Pages - 59
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2018-04-27 16:42:08.267
Date Last Updated
2019-01-07 11:24:32.9118
Submitter:
Mohd Jasnizam Mohd Salleh

All Versions

Thumbnail Name Version Created Date
Performance of poly(vinyl alcohol) asymmetric membrane incorporated with graphene oxide for pervaporation dehydration of ethanol aqueous solution1 2018-04-27 16:42:08.267