Recovery of Fluoride as Perovskite-like Minerals from Industrial Wastewater
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 )