Carbon Nanotube Enhanced Filtration and Dewatering of Kerosene
Current approaches to dewatering aviation fuel such as kerosene are adsorption by activated charcoal, gravity separation, etc. The objective of this work is to develop and demonstrate the filtration and dewatering of kerosene using a carbon nanotube immobilised membrane (CNIM). Highly hydrophobic me...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-06-01
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| Series: | Membranes |
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| Online Access: | https://www.mdpi.com/2077-0375/12/6/621 |
| _version_ | 1797484509702127616 |
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| author | Sumona Paul Mitun Chandra Bhoumick Sagar Roy Somenath Mitra |
| author_facet | Sumona Paul Mitun Chandra Bhoumick Sagar Roy Somenath Mitra |
| author_sort | Sumona Paul |
| collection | DOAJ |
| description | Current approaches to dewatering aviation fuel such as kerosene are adsorption by activated charcoal, gravity separation, etc. The objective of this work is to develop and demonstrate the filtration and dewatering of kerosene using a carbon nanotube immobilised membrane (CNIM). Highly hydrophobic membranes were prepared by immobilising carbon nanotube (CNTs) over polytetrafluoroethylene (PTFE) and polyvinylidene difluoride (PVDF) microfiltration membrane for the dewatering of ppm level water from kerosene. The effects of different CNT concentrations on membrane morphology, hydrophobicity, porosity, and permeability were characterised. After immobilising CNT into membranes, the contact angle increased by 9%, 16%, and 43% compared to unmodified 0.1 μm PTFE, 0.22 μm PTFE and 0.22 μm PVDF membranes, respectively. The CNIM showed remarkable separation efficiency for the fuel-water system. The micro/nano water droplets coalesced on the CNT surface to form larger diameters of water droplets detached from the membrane surface, leading to enhanced water rejection. In general, the water rejection increased with the amount of CNT immobilised while the effective surface porosity over pore length and flux decreased. PTFE base membrane showed better performance compared to the PVDF substrate. The CNIMs were fabricated with 0.1 and 0.22 μm PTFE at an optimised CNT loading of 3 and 6 wt.%, and the water rejection was 99.97% and 97.27%, respectively, while the kerosene fluxes were 43.22 kg/m<sup>2</sup>·h and 55.44 kg/m<sup>2</sup>·h respectively. |
| first_indexed | 2024-03-09T23:05:25Z |
| format | Article |
| id | doaj.art-eaa45d415b774120babfa2c43ef222a8 |
| institution | Directory Open Access Journal |
| issn | 2077-0375 |
| language | English |
| last_indexed | 2024-03-09T23:05:25Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Membranes |
| spelling | doaj.art-eaa45d415b774120babfa2c43ef222a82023-11-23T17:54:57ZengMDPI AGMembranes2077-03752022-06-0112662110.3390/membranes12060621Carbon Nanotube Enhanced Filtration and Dewatering of KeroseneSumona Paul0Mitun Chandra Bhoumick1Sagar Roy2Somenath Mitra3Department of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark, NJ 07102, USADepartment of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark, NJ 07102, USADepartment of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark, NJ 07102, USADepartment of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark, NJ 07102, USACurrent approaches to dewatering aviation fuel such as kerosene are adsorption by activated charcoal, gravity separation, etc. The objective of this work is to develop and demonstrate the filtration and dewatering of kerosene using a carbon nanotube immobilised membrane (CNIM). Highly hydrophobic membranes were prepared by immobilising carbon nanotube (CNTs) over polytetrafluoroethylene (PTFE) and polyvinylidene difluoride (PVDF) microfiltration membrane for the dewatering of ppm level water from kerosene. The effects of different CNT concentrations on membrane morphology, hydrophobicity, porosity, and permeability were characterised. After immobilising CNT into membranes, the contact angle increased by 9%, 16%, and 43% compared to unmodified 0.1 μm PTFE, 0.22 μm PTFE and 0.22 μm PVDF membranes, respectively. The CNIM showed remarkable separation efficiency for the fuel-water system. The micro/nano water droplets coalesced on the CNT surface to form larger diameters of water droplets detached from the membrane surface, leading to enhanced water rejection. In general, the water rejection increased with the amount of CNT immobilised while the effective surface porosity over pore length and flux decreased. PTFE base membrane showed better performance compared to the PVDF substrate. The CNIMs were fabricated with 0.1 and 0.22 μm PTFE at an optimised CNT loading of 3 and 6 wt.%, and the water rejection was 99.97% and 97.27%, respectively, while the kerosene fluxes were 43.22 kg/m<sup>2</sup>·h and 55.44 kg/m<sup>2</sup>·h respectively.https://www.mdpi.com/2077-0375/12/6/621dewateringfiltrationhydrophobiccarbon nanotubesfuel-water system |
| spellingShingle | Sumona Paul Mitun Chandra Bhoumick Sagar Roy Somenath Mitra Carbon Nanotube Enhanced Filtration and Dewatering of Kerosene Membranes dewatering filtration hydrophobic carbon nanotubes fuel-water system |
| title | Carbon Nanotube Enhanced Filtration and Dewatering of Kerosene |
| title_full | Carbon Nanotube Enhanced Filtration and Dewatering of Kerosene |
| title_fullStr | Carbon Nanotube Enhanced Filtration and Dewatering of Kerosene |
| title_full_unstemmed | Carbon Nanotube Enhanced Filtration and Dewatering of Kerosene |
| title_short | Carbon Nanotube Enhanced Filtration and Dewatering of Kerosene |
| title_sort | carbon nanotube enhanced filtration and dewatering of kerosene |
| topic | dewatering filtration hydrophobic carbon nanotubes fuel-water system |
| url | https://www.mdpi.com/2077-0375/12/6/621 |
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