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:Separation of three divalent cations (Cu2 +, Co2 + and Ni2 +) by NF membranes from pHs 3 to 5
學年102
學期1
出版(發表)日期2013/11/01
作品名稱Separation of three divalent cations (Cu2 +, Co2 + and Ni2 +) by NF membranes from pHs 3 to 5
作品名稱(其他語言)
著者Nguyen Cong Nguyen; Chen, Shiao-Shing; Hsu, Hung-Te; Li, Chi-Wang
單位淡江大學水資源及環境工程學系
出版者Nederland: Elsevier BV
著錄名稱、卷期、頁數Desalination 328, pp.51-57
摘要Separation mechanisms for the three model divalent cations with very similar atomic weights (Cu, 63.5 Da; Co, 58.9 Da and Ni, 58.7 Da) by two nanofiltration (NF) membranes (Nitto Denko ESNA and GE Osmonics DK) were studied in a cross flow module from pHs 3 to 5. The results show that the rejection order for the two selected membranes was Ni2 + > Cu2 + > Co2 + from the conducted experiments, and the removal efficiency was increased as pH was decreased for all three metals. It was found that enthalpy of hydration and concentration polarization exerted the controlling effect on the membrane selective transport rather than atomic weight, Stokes radius and hydrated radius. Besides, the counterion of sulfate enhanced the removal efficiencies, but an increase of sulfate more than 0.01 M reduced the removal efficiencies. Moreover, the removal efficiency of DK membrane was better than that of the ESNA membrane due to the positive charge of DK membrane at low pH.
關鍵字Nanofiltration;Divalent cation;Enthalpy of hydration;Pore radius;Concentration polarization
語言英文
ISSN0011-9164
期刊性質國外
收錄於SCI
產學合作
通訊作者Chena, Shiao-Shing
審稿制度
國別荷蘭
公開徵稿
出版型式電子版
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