Effect of tertiary amine carbon quantum dots incorporation on oil/water separation performance of membranes
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ID: 284338
2025
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Abstract
The significant production of oily industrial wastewater, fueled by industrial expansion, presents a major environmental risk and seriously threatens human health and the ecosystem. Traditional oily wastewater treatment processes suffer from drawbacks such as high energy consumption, low efficiency, and large footprint. This research aims to improve the efficiency of separation and antifouling properties of cellulose acetate (CA) tubular membranes for oil/water separation by incorporating tertiary amine carbon quantum dots (TQDs) into the membrane. The CA tubular membrane was fabricated using the dry-wet spinning technique. The TQDs increased the hydrophilicity of the CA membrane due to the presence of hydrophilic functional groups in the nanomaterial. The modified tubular membrane exhibited high permeance for pure water and diesel oil-water emulsion, measuring 586.8 ±30.0 L m2 h 1 bar 1 and 394.8 ±43.3 L m2 h 1 bar 1, respectively, with an impressive oil rejection rate of 99 %. The flux recovery and reversible fouling ratio increased to 89.81 % and 28.30 %, respectively, while the irreversible fouling ratio decreased to 10.19 %. The modified tubular membrane has a good long-term stability after 10 cycles of tests and effectively separated various oil (dodecane, diesel, canola oil, and engine oil)-water emulsions with a separation efficiency ranging from 97 % to 99 %. Overall, the tertiary amine carbon quantum dots-incorporated tubular membrane proved to be efficient in the separation of oil and water.
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| Authors | Lee, Kueir-Rarn |
| Journal | Malay Journal |
| Year | 2025 |
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| Keywords | Keywords not found |
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