|
Removal of Cerium from aqueous solution via Polymer-enhanced ultrafiltration |
| Authors: PAN Ling, LU Xiaofeng*, CHEN Lifang, SHEN Liguo, QIN Qiang, LIU Zhongying,Wang Shuai |
| Units: Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China |
| KeyWords: polyethyleneimine(PEI); complexation; ultrafiltration; radioactive wastewater; cerium |
| ClassificationCode: |
| year,volume(issue):pagination: 2014, 34(6):67-71 |
|
Abstract: |
|
Polyethyleneimine(PEI) was used to assist ultrafiltration to remove cerium from radioactive wastewater. The effects of pH, mass ratio of polymer to metal (P/M), ionic concentration, transmembrane pressure and processing time on retention of cerium and membrane permeate fluxeswere investigated. The results showthat when using PEI assist ultrafiltration,the optimum pH value and P/M value are 5 and 15, respectively; at the optimum conditions, the retentions of three different molecular weight cut-off (MWCO)membranesare 88.23% (5kDa), 87.01% (10kDa) and 89.78% (30kDa), respectively; in addition, the retention of cerium will decrease when Na+ and Ca2+ are exist in solution.The membranepermeate flux is linear increase with the increase of transmembrane pressure;Three kinds of membrane permeate flux have a tendency to decrease with the increase of operation time,and the rank of three membranespermeate flux decrease rate is: 30kDa >10kDa> 5kDa. |
|
Funds: |
| 上海市科技攻关项目(08231200300) |
|
AuthorIntro: |
| 潘玲(1988-),女,安徽滁州人,硕士研究生,研究方向为超滤技术在放射性废水中的应用,E-mail:panling@sinap.ac.cn. |
|
Reference: |
|
[1]朱永懿,裘同才.裂变产物90Sr、137Cs和144Ce在土壤—植物系统中行为[J] .中国核科技报告,1988,(00):879-889. |
|
Service: |
| 【Download】【Collect】 |
《膜科学与技术》编辑部 Address: Bluestar building, 19 east beisanhuan road, chaoyang district, Beijing; 100029 Postal code; Telephone:010-80492417/010-80485372; Fax:010-80485372 ; Email:mkxyjs@163.com
京公网安备11011302000819号