| Autor: |
Fuzil, Nurul Syazana, Othman, Nur Hidayati, Alias, Nur Hashimah, Marpani, Fauziah, Mat Shayuti, Muhammad Shafiq, Shahruddin, Munawar Zaman, Mohd Razlan, Mohd Rizuan, Abd Rahman, Norazah, Lau, Woei Jye, Othman, Mohd Hafiz Dzarfan, Ismail, Ahmad Fauzi, Kusworo, Tutuk Djoko, Ul-Hamid, Anwar |
| Zdroj: |
Journal of Environmental Chemical Engineering; June 2023, Vol. 11 Issue: 3 |
| Abstrakt: |
In this work, the surface of a PVDF-based hollow fiber membrane was modified by coating MoS2-TiO2to improve the performance of membrane distillation (MD). The MoS2-TiO2was first synthesized at different ratios using a one-step hydrothermal process. Then, the PVDF-based hollow fiber membrane was spun at various air gaps and PES was also added as an additive. As 5M5T (50 wt% MoS2and 50 wt% TiO2) possessed better physicochemical properties and narrow band gap, the 5M5T was mixed with trichloro(octadecyl)silane in (OTS) at various loading to form a dip-coating solution. The PP20 membrane (PVDF + PES) spun at a 20 cm air gap was used as a support for MD due to its high porosity and low membrane thickness. It was observed that the contact angle of the MoS2-TiO2/PP20 membrane increased significantly to 136.8 ± 2.33° when the membrane was coated with 0.2% of 5M5T MoS2-TiO2. The MD performances were investigated via an in-house MD system. The results revealed that the performances of MoS2-TiO2/PP20 membranes were much higher than previously reported membranes due to their enhanced hydrophobicity and porosity properties. It was observed that a higher operating temperature could elevate the permeate flux up to 23.3 kg·m−2·h−1,but less than 0.1% changes in the rejection rate. The results obtained in this work suggest that the MoS2-TiO2coated on the PVDF-based membrane can overcomes the typical permeability/rejection rate trade-off effect, which can play a significant role in enhancing MD performances. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
|
Full Text from ScienceDirect