教師資料查詢 | 類別: 期刊論文 | 教師: 蘇鎮芳 JENN-FANG SU (瀏覽個人網頁)

標題:The adsorption characteristics of fluoride on commercial activated carbon treated with quaternary ammonium salts (Quats)
學年108
學期1
出版(發表)日期2019/11/25
作品名稱The adsorption characteristics of fluoride on commercial activated carbon treated with quaternary ammonium salts (Quats)
作品名稱(其他語言)
著者Ching-Lung Chen; Sang-Won Park; Jenn Feng Su; Yu-Han Yu; Jae-eun Heo; Kyung-duk Kim; CP Huang
單位
出版者
著錄名稱、卷期、頁數Science of The Total Environment 693, 133605(9 pages)
摘要Commercial activated carbon was treated with six quaternary ammonium salts (Quats), namely, hexyltrimethylammonium (HTMA), octyltrimethylammonium (OTMA), decyltrimethylammonium (DCTMA), dodecyltrimethylammonium (DDTMA), Tetradecyltrimethylammonium (TDTMA), and hexadecyltrimethylammoium (HDTMA) as to enhance the fluoride adsorption capacity. In batch mode experiments, fluoride adsorption onto the Quats-treated activated carbon decreased dramatically with increase in solution pH. Fluoride removal by the Quats-treated activated carbons was closely related to the Quats chain length at less-than critical micelle concentration (CMC). Multi-site adsorption isotherm described fluoride adsorption characteristics well. Results showed that activated carbon treated with DDTMA exhibited the best fluoride adsorption density among all Quats investigated. DDTMA-treated activated carbons exhibited two-fold increase in the fluoride adsorption capacity compared to the untreated activated carbon. Results of regeneration, by alkaline desorption and/or Quats re-loading, showed fluoride-laden activated carbons have high reusability. DDTMA increased the positive surface charge of the activated carbon that enhanced fluoride adsorption. DDTMA-treated activated carbon was promising for fluoride removal from water with much enhanced removal capacity.
關鍵字Fluoride;Activated carbon;Surface treatment;Quaternary ammonium salts;Multi-site Langmuir equation
語言英文(美國)
ISSN0048-9697
期刊性質國外
收錄於SCI;
產學合作
通訊作者CP Huang
審稿制度
國別荷蘭
公開徵稿
出版型式,電子版
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