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Hexadecyltrimethylammonium-modified fly-ash zeolite for sulfate removal in treated coal-fired power plant effluent |
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| รหัสดีโอไอ | |
| Creator | 1. Anyamanee Budput 2. Dickson Y.S. Yan 3. May Thu Than Htikea 4. Pummarin Khamdahsag 5. Visanu Tanboonchuy |
| Title | Hexadecyltrimethylammonium-modified fly-ash zeolite for sulfate removal in treated coal-fired power plant effluent |
| Publisher | Faculty of Engineering, Khon Kaen University |
| Publication Year | 2566 |
| Journal Title | Engineering and Applied Science Research |
| Journal Vol. | 50 |
| Journal No. | 4 |
| Page no. | 350-358 |
| Keyword | Adsorption, Fly ash, Power plant, Sulfate, Zeolite |
| URL Website | https://ph01.tci-thaijo.org/index.php/easr/index |
| Website title | Engineering and Applied Science Research |
| ISSN | 2539-6161 |
| Abstract | This research was conducted primarily to examine sulfate ion (SO42-) removal from aqueous solutions using zeolite NaP1 surface modified with hexadecyltrimethylammonium (HDTMA), or so-called MZ-HDTMA. To be suitable for SO42- removal conditions, the synthetic conditions of MZ-HDTMA were optimized utilizing a Box-Behnken design approach. Experiments were conducted considering three factors that influence synthesis, including the amount of HDTMA cationic surfactant (3.33-6.67 wt%), mixing time (0.5-2 h), and drying temperature (50-80°C). The zeolite NaP1 synthesized from fly ash and MZ-HDTMA were characterized to compare their characteristics using techniques including point of zero charge (pHpzc), scanning electron microscopy (SEM), and x-ray diffraction (XRD). The results from SO42- removal showed that the most significant effect was the weight percentage of HDTMA. Adsorption kinetic studies revealed that modified zeolite had a SO42- removal amount of 8.913 mg/g at equilibrium time and better fitted the pseudo-second-order model (R2 = 0.99). This study established that more than 80% of the SO42- in the aqueous solution was removed. |
