Mesoporous zirconium pyrophosphate for the adsorption of fluoride from dilute aqueous solutions
學年 110
學期 1
出版（發表）日期 2022-01-01
作品名稱 Mesoporous zirconium pyrophosphate for the adsorption of fluoride from dilute aqueous solutions
作品名稱（其他語言）
著者 Ching-Lung Chen; Yu-Jen Shih; Jenn Fang Su; Kuan-Ling Chen; Chin-Pao Huang
單位
出版者
著錄名稱、卷期、頁數 Chemical Engineering Journal 427, 132034
摘要 Mesoporous zirconium pyrophosphate(ZPP) adsorbents were synthesized, with six quaternary ammonium salts (Quats), namely, Octyltrimethylammonium (OTMA, C8), Decyltrimethylammonium (DCTMA, C10), Dodecyltrimethylammonium (DDTMA, C12), Tetradecyltrimethylammonium (TDTMA, C14), Hexadecyltrimethylammoium (HDTMA, C16), and Octadecyltrimethylammonium (ODTMA, C18), as template for studying fluoride adsorption. Quats of long carbon chain length significantly affected the specific surface area of mesoporous ZPP adsorbents. C18-ZPP exhibited the largest specific surface area and fluoride adsorption density. Fluoride adsorption density remained constant at pH < 7.0, decreased sharply as pH increased beyond 7, and became minimal at pH > 10–11. Langmuir adsorption isotherm described fluoride adsorption characteristics well. Results showed that mesoporous ZPP synthesized with C18 at Zr to C18 molar ratio of 0.57:1 exhibited the best fluoride adsorption capacity (32 mmol/g) among all ZPP adsorbents prepared at various Zr to C18 molar ratios. C18-ZPP exhibited two-fold increase in fluoride removal capacity compared to plain ZPP. The reusability of C18-ZPP was assessed by running fluoride removal at least five cycles. Mesoporous ZPP is a promising adsorbent for fluoride removal from water with much enhanced adsorption capacity, regenerability, and reusability.
關鍵字 Mesoporous;Zirconium pyrophosphate;Quaternary ammonium salts;Fluoride;Regeneration
語言 en_US
ISSN 1385-8947
期刊性質 國外
收錄於 SCI
產學合作
通訊作者
審稿制度 否
國別 TWN
公開徵稿
出版型式 ,電子版
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機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/122539 )