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Novel hybrid ceramic/carbon membrane for oil removal
In: Journal of Membrane Science. Elsevier: Amsterdam. ISSN 0376-7388; e-ISSN 1873-3123
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| Author keywords |
Ceramic membrane; Al2O3; Activated carbon (AC); Oily wastewater;Wastewater treatment |
| Auteurs | | Top |
- Fard, A.K.
- Bukenhoudt, A.
- Jacobs, M.
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| Abstract |
A low cost and high performing hybrid ceramic/carbon symmetric membrane has been fabricated and tested. The hybrid membrane was fabricated by mixing alumina powder with high surface area powdered activated carbon (PAC). The hybrid Al2O3/AC membrane has a developed complex network of micro and nano channels which enhanced the porosity of the membrane two fold compared to a pure Al2O3membrane. Furthermore, due to enhanced pore size and porosity, the hybrid membrane exhibited super-hydrophilic characteristics with the contact angle being close to zero. The increase in the membrane roughness enhanced the surface area of the membrane, which created an increase in the membrane surface area for the filtration path. The membrane exhibited a very high removal efficiency and retention (more than 99%) of oil from an oil-in-water emulsion stabilized by a surfactant. The membrane performance has been tested under harsh conditions such as a high oil concentration in a concentrated saline feed and no change in the separation efficiency or performance was observed with time. The membrane proved to be a good candidate for applications such as the treatment of oily wastewater or oil separation from seawater or from produced-water. |
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