Stabilising nanofluids in saline environments
Nanofluids (i.e. nanoparticles dispersed in a fluid) have tremendous potential in a broad range of applications, including pharmacy, medicine, water treatment, soil decontamination, or oil recovery and CO 2 geo-sequestration. In these applications nanofluid stability plays a key role, and typically...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Published: |
Academic Press
2017
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| Online Access: | http://hdl.handle.net/20.500.11937/57059 |
| _version_ | 1848760004938563584 |
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| author | Al-Anssari, S. Arif, M. Wang, Shaobin Barifcani, Ahmed Iglauer, Stefan |
| author_facet | Al-Anssari, S. Arif, M. Wang, Shaobin Barifcani, Ahmed Iglauer, Stefan |
| author_sort | Al-Anssari, S. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Nanofluids (i.e. nanoparticles dispersed in a fluid) have tremendous potential in a broad range of applications, including pharmacy, medicine, water treatment, soil decontamination, or oil recovery and CO 2 geo-sequestration. In these applications nanofluid stability plays a key role, and typically robust stability is required. However, the fluids in these applications are saline, and no stability data is available for such salt-containing fluids. We thus measured and quantified nanofluid stability for a wide range of nanofluid formulations, as a function of salinity, nanoparticle content and various additives, and we investigated how this stability can be improved. Zeta sizer and dynamic light scattering (DLS) principles were used to investigate zeta potential and particle size distribution of nanoparticle-surfactant formulations. Also scanning electron microscopy was used to examine the physicochemical aspects of the suspension. We found that the salt drastically reduced nanofluid stability (because of the screening effect on the repulsive forces between the nanoparticles), while addition of anionic surfactant improved stability. Cationic surfactants again deteriorated stability. Mecha nisms for the different behaviour of the different formulations were identified and are discussed here. We thus conclude that for achieving maximum nanofluid stability, anionic surfactant should be added. |
| first_indexed | 2025-11-14T10:08:53Z |
| format | Journal Article |
| id | curtin-20.500.11937-57059 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:08:53Z |
| publishDate | 2017 |
| publisher | Academic Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-570592019-08-19T03:35:31Z Stabilising nanofluids in saline environments Al-Anssari, S. Arif, M. Wang, Shaobin Barifcani, Ahmed Iglauer, Stefan Nanofluids (i.e. nanoparticles dispersed in a fluid) have tremendous potential in a broad range of applications, including pharmacy, medicine, water treatment, soil decontamination, or oil recovery and CO 2 geo-sequestration. In these applications nanofluid stability plays a key role, and typically robust stability is required. However, the fluids in these applications are saline, and no stability data is available for such salt-containing fluids. We thus measured and quantified nanofluid stability for a wide range of nanofluid formulations, as a function of salinity, nanoparticle content and various additives, and we investigated how this stability can be improved. Zeta sizer and dynamic light scattering (DLS) principles were used to investigate zeta potential and particle size distribution of nanoparticle-surfactant formulations. Also scanning electron microscopy was used to examine the physicochemical aspects of the suspension. We found that the salt drastically reduced nanofluid stability (because of the screening effect on the repulsive forces between the nanoparticles), while addition of anionic surfactant improved stability. Cationic surfactants again deteriorated stability. Mecha nisms for the different behaviour of the different formulations were identified and are discussed here. We thus conclude that for achieving maximum nanofluid stability, anionic surfactant should be added. 2017 Journal Article http://hdl.handle.net/20.500.11937/57059 10.1016/j.jcis.2017.08.043 Academic Press fulltext |
| spellingShingle | Al-Anssari, S. Arif, M. Wang, Shaobin Barifcani, Ahmed Iglauer, Stefan Stabilising nanofluids in saline environments |
| title | Stabilising nanofluids in saline environments |
| title_full | Stabilising nanofluids in saline environments |
| title_fullStr | Stabilising nanofluids in saline environments |
| title_full_unstemmed | Stabilising nanofluids in saline environments |
| title_short | Stabilising nanofluids in saline environments |
| title_sort | stabilising nanofluids in saline environments |
| url | http://hdl.handle.net/20.500.11937/57059 |