教師資料查詢 | 類別: 期刊論文 | 教師: 李奇旺 Chi-Wang Li (瀏覽個人網頁)

標題: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
語言英文
ISSN1383-5866;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
國別英國
公開徵稿
出版型式,電子版,紙本
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