Reduction and Elimination of Humic Acid Fouling in Air Sparged Membrane Distillation Using Nanocarbon Immobilized Membrane
In this paper, we present the treatment of humic acid solution via carbon nanotube immobilized membrane (CNIM) distillation assisted by air sparging (AS). Carbon nanotubes offer excellent hydrophobicity to the modified membrane surface and actively transport water vapor molecules through the membran...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-05-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/27/9/2896 |
| _version_ | 1797503635658113024 |
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| author | Mitun Chandra Bhoumick Sagar Roy Somenath Mitra |
| author_facet | Mitun Chandra Bhoumick Sagar Roy Somenath Mitra |
| author_sort | Mitun Chandra Bhoumick |
| collection | DOAJ |
| description | In this paper, we present the treatment of humic acid solution via carbon nanotube immobilized membrane (CNIM) distillation assisted by air sparging (AS). Carbon nanotubes offer excellent hydrophobicity to the modified membrane surface and actively transport water vapor molecules through the membrane to generate higher vapor flux and better rejection of humic acid. The introduction of air sparging in the membrane distillation (MD) system has changed the humic substance fouling by changing the colloidal behavior of the deposits. This modified MD system can sustain a higher run time of separation and has enhanced the evaporation efficiency by 20% more than the regular membrane distillation. The air sparging has reduced the deposition by 30% in weight and offered lesser fouling of membrane surface even after a longer operating cycle. The water vapor flux increased with temperature and decreased as the volumetric concentrating factor (VCF) increased. The mass transfer coefficient was found to be the highest for the air sparged—carbon nanotube immobilized membrane (AS-CNIM) integrated membrane distillation. While the highest change in mass transfer coefficient (MTC) was found for polytetrafluoroethylene (PTFE) membrane with air sparging at 70 °C. |
| first_indexed | 2024-03-10T03:53:31Z |
| format | Article |
| id | doaj.art-4557e22f8db5439db60023c4d596c96e |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-10T03:53:31Z |
| publishDate | 2022-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-4557e22f8db5439db60023c4d596c96e2023-11-23T08:51:16ZengMDPI AGMolecules1420-30492022-05-01279289610.3390/molecules27092896Reduction and Elimination of Humic Acid Fouling in Air Sparged Membrane Distillation Using Nanocarbon Immobilized MembraneMitun Chandra Bhoumick0Sagar Roy1Somenath Mitra2Department of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark College of Engineering, University Heights, Newark, NJ 07102, USADepartment of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark College of Engineering, University Heights, Newark, NJ 07102, USADepartment of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark College of Engineering, University Heights, Newark, NJ 07102, USAIn this paper, we present the treatment of humic acid solution via carbon nanotube immobilized membrane (CNIM) distillation assisted by air sparging (AS). Carbon nanotubes offer excellent hydrophobicity to the modified membrane surface and actively transport water vapor molecules through the membrane to generate higher vapor flux and better rejection of humic acid. The introduction of air sparging in the membrane distillation (MD) system has changed the humic substance fouling by changing the colloidal behavior of the deposits. This modified MD system can sustain a higher run time of separation and has enhanced the evaporation efficiency by 20% more than the regular membrane distillation. The air sparging has reduced the deposition by 30% in weight and offered lesser fouling of membrane surface even after a longer operating cycle. The water vapor flux increased with temperature and decreased as the volumetric concentrating factor (VCF) increased. The mass transfer coefficient was found to be the highest for the air sparged—carbon nanotube immobilized membrane (AS-CNIM) integrated membrane distillation. While the highest change in mass transfer coefficient (MTC) was found for polytetrafluoroethylene (PTFE) membrane with air sparging at 70 °C.https://www.mdpi.com/1420-3049/27/9/2896air spargingmembrane foulingcarbon nanotubeshydrophobic membrane and evaporation efficiency |
| spellingShingle | Mitun Chandra Bhoumick Sagar Roy Somenath Mitra Reduction and Elimination of Humic Acid Fouling in Air Sparged Membrane Distillation Using Nanocarbon Immobilized Membrane Molecules air sparging membrane fouling carbon nanotubes hydrophobic membrane and evaporation efficiency |
| title | Reduction and Elimination of Humic Acid Fouling in Air Sparged Membrane Distillation Using Nanocarbon Immobilized Membrane |
| title_full | Reduction and Elimination of Humic Acid Fouling in Air Sparged Membrane Distillation Using Nanocarbon Immobilized Membrane |
| title_fullStr | Reduction and Elimination of Humic Acid Fouling in Air Sparged Membrane Distillation Using Nanocarbon Immobilized Membrane |
| title_full_unstemmed | Reduction and Elimination of Humic Acid Fouling in Air Sparged Membrane Distillation Using Nanocarbon Immobilized Membrane |
| title_short | Reduction and Elimination of Humic Acid Fouling in Air Sparged Membrane Distillation Using Nanocarbon Immobilized Membrane |
| title_sort | reduction and elimination of humic acid fouling in air sparged membrane distillation using nanocarbon immobilized membrane |
| topic | air sparging membrane fouling carbon nanotubes hydrophobic membrane and evaporation efficiency |
| url | https://www.mdpi.com/1420-3049/27/9/2896 |
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