Effect of ethylene vinyl acetate content on the performance of VMD using HDPE co-blending membrane
| Autor: | Jun Xiang, Zhao Li, Xuekui Wang, Na Tang, Xinxin Hua, Jiating Wang, Cheng Penggao, Lei Zhang |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
chemistry.chemical_classification
Environmental Engineering Materials science General Chemical Engineering Ethylene-vinyl acetate 02 engineering and technology General Chemistry Polymer Permeation Polyethylene 021001 nanoscience & nanotechnology Membrane distillation Biochemistry Polyester chemistry.chemical_compound Membrane 020401 chemical engineering chemistry Chemical engineering High-density polyethylene 0204 chemical engineering 0210 nano-technology |
| Zdroj: | Chinese Journal of Chemical Engineering. 27:1058-1066 |
| ISSN: | 1004-9541 |
| Popis: | Membranes were fabricated with high-density polyethylene (HDPE) and ethylene vinyl acetate (EVA) blend through thermally induced phase separation and were then used for vacuum membrane distillation (VMD). The membranes were supported by nonwoven polyester fabric with a special cellular structure. Different membrane samples were obtained by adjusting the polymer concentration, HDPE/EVA weight ratio, and coagulation bath temperature. The membranes were characterized by scanning electron microscopy (SEM) analysis, contact angle test, and evaluation of porosity and pore size distribution. A series of VMD tests were conducted using aqueous NaCl solution (0.5 mol·L−1) at a feed temperature of 65 °C and permeate side absolute pressure of 3 kPa. The membranes showed excellent performance in water permeation flux, salt rejection, and long-term stability. The HDPE/EVA co-blending membranes exhibited the largest permeation flux of 23.87 kg·m−2·h−1 and benign salt rejection of ≥ 99.9%. |
| Databáze: | OpenAIRE |
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