期刊論文
| 學年 | 104 |
|---|---|
| 學期 | 1 |
| 出版（發表）日期 | 2015-12-17 |
| 作品名稱 | Recovery of Fluoride as Perovskite-like Minerals from Industrial Wastewater |
| 作品名稱（其他語言） | |
| 著者 | Lee, Meng-Ting; Li, Chi-Wang; Liu, Jhy-Chern |
| 單位 | |
| 出版者 | |
| 著錄名稱、卷期、頁數 | Separation and Purification Technology 156(3), pp.1057-1063 |
| 摘要 | This study investigated the recovery of fluoride (626.5 mg/L) from an industrial wastewater as perovskite-like minerals. Effects of equilibrium pH (pHeq), molar ratio of Na to F (Na/F), and types of pH reagents were examined. Fluoride was recovered and confirmed by XRD as elpasolite (K2NaAlF6) when pH reagent was KOH. High fluoride removal efficiency (>94.7%) was found at Na/F of 3/6, Al/F of 1/6, room temperature, and pHeq range of 4.2–5.7. Satisfactory K2NaAlF6 recovery and fluoride removal were found as Na/F reduced to 1/6. Fluoride was recovered as cryolite (Na3AlF6) when NaOH was the pH reagent at Na/F of 12/6, Al/F of 1/6 and pHeq range of 5.5–7.2, and good fluoride removal efficiency (>94.5%) was found. Size analysis and sedimentation test showed that both K2NaAlF6 and Na3AlF6 could be easily separated from water. The current study demonstrated simple and energy-efficient alternatives for fluoride recovery as potentially reusable minerals from wastewater. |
| 關鍵字 | Cryolite;Elpasolite;Fluoride;Perovskite-like minerals;Wastewater |
| 語言 | en |
| ISSN | 1383-5866;1873-3794 |
| 期刊性質 | 國外 |
| 收錄於 | SCI EI |
| 產學合作 | |
| 通訊作者 | Liu, Jhy-Chern |
| 審稿制度 | 否 |
| 國別 | GBR |
| 公開徵稿 | |
| 出版型式 | ,電子版,紙本 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/104329 ) |