Recovery of iodide as triiodide from thin-film transistor liquid crystal display wastewater by forward osmosis
學年 109
學期 2
出版（發表）日期 2021-02-05
作品名稱 Recovery of iodide as triiodide from thin-film transistor liquid crystal display wastewater by forward osmosis
作品名稱（其他語言）
著者 Hau-Ming Chang; Shiao-Shing Chen; Yu-Ting Chen; Wen-Shing Chang; Chi-Wang Li; Nguyen Cong Nguyen; Saikat Sinha Ray; Dan Thanh Ngoc Cao
單位
出版者
著錄名稱、卷期、頁數 Journal of Hazardous Materials Volume 403, 123637
摘要 Triiodide, a larger charged molecule compared to iodide, is thermodynamically favored with the presence of both iodide and iodine, and is easier to be retained by membrane processes. For the first time, iodide was recovered in the form of triiodide by forward osmosis (FO) for thin-film transistor liquid crystal display industries by preoxidation of iodide to triiodide. Partial oxidation by NaOCl was used to convert the iodide to iodine and then to form triiodide. Ethylenediaminetetraacetic acid disodium salt (EDTA-2Na), a commonly used chelating agent in the industry, was used as the draw solute because of its low reverse salt flux. The results revealed that the ideal efficiency of iodide recovery was at pH 3 with a preoxidation (adding 0.0150 M NaClO) for the 0.048 M iodide wastewater with a recovery of 98.5%. Additionally, the Pourbaix diagram and starch indicator were used to verify the formation of triiodide. Membrane distillation was demonstrated to recover the EDTA-2Na draw solute, and more than 99% of recoveries for the draw solutes with initial water flux of 12.0 L/m2 h were achieved, indicating that simultaneous recovery of the EDTA-2Na draw solute and water is feasible.
關鍵字 Forward osmosis;Iodide recovery;Triiodide;Membrane distillation;Draw solution
語言 en_US
ISSN 1873-3336
期刊性質 國外
收錄於 SCI Scopus
產學合作
通訊作者
審稿制度 是
國別 GBR
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/987654321/119087 )

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