Removal of strontium ions from simulated radioactive wastewater by vacuum membrane distillation

被引：60
作者：
Jia, Fei [1 ]
Li, Junfeng [1 ,2 ]
Wang, Jianlong [1 ,2 ]
Sun, Yuliang [1 ]
机构：
[1] Tsinghua Univ, INET, Collaborat Innovat Ctr Adv Nucl Energy Technol, Beijing 100084, Peoples R China
[2] Tsinghua Univ, Beijing Key Lab Radioact Waste Treatment, Beijing 100084, Peoples R China
来源：
ANNALS OF NUCLEAR ENERGY | 2017年 / 103卷
关键词：
Vacuum membrane distillation; Hollow fiber membrane; Strontium; Radioactive wastewater; Dusty gas model; AQUEOUS-SOLUTION; RADIONUCLIDES; DESALINATION; SEPARATION; CESIUM;
D O I：
10.1016/j.anucene.2017.02.003
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
The removal of Sr2+ ions from simulated radioactive wastewater by vacuum membrane distillation (VMD) with hollow fiber membrane module was investigated. The removal efficiency of Sr2+ could maintain over 99.60%, and the membrane flux could maintain at 6.71 L.m(-2.)h(-1) when Sr2+ in the feed solution was about 10 mg/L. The effect of operating parameters on the membrane flux was examined, including feed temperature (30-70 degrees C), permeate side vacuum (0.10-0.98 atm) and feed flow velocity (10.5-41.8 L/h). Pressure buildup effect was observed during the process, which could interfere with the membrane flux. Pressure buildup effect was more serious when permeate side vacuum degree was over 0.9 atm. Considering energy consumption efficiency, the permeate side vacuum degree should be maintained at the turning point (0.9 atm) of the membrane flux. Dusty gas model could simulate the mass transfer of VMD process well with ARE (average relative error) of 5.31%. VMD is potential for the removal of Sr2+ ions from aqueous solution. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：363 / 368
页数：6
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