化工学报2016，Vol.67Issue(12)：5040-5047,8.DOI:10.11949/j.issn.0438-1157.20160952
ZrO2-TiO2复合纳滤膜在模拟放射性废水中的应用
Application of ZrO2-TiO2 composite nanofiltration membrane for treatment of simulative radioactive waste water
摘要
Abstract
The radioactive waste water is generated in nuclear industry, nuclear research centers, medicine and other fields. It’s harmful to living organisms, environment and natural resources. Thus, the radioactive waste water should be managed and treated well. Nanofiltration is a new kind separation technology with low-cost and high-efficiency, which ranges between ultrafiltration and reverse osmosis. In this work, TiO2/ZrO2 composite nanofiltration membranes with MWCO of about 500 and permeability of 270 L·m−2·h−1·MPa−1 were used to remove the cobalt and strontium ions in the low-level radioactive wastewater without the addition of complexing agent. The effects of pH, transmembrane pressure and initial concentration on the permeability and retention property were investigated. It was demonstrated that the ion retention behaviors were enhanced with the increase of transmembrane pressure from 0.4 to 1.0 MPa, while the permeability changed slightly. The retention gradually increased along with the deviation from the isoelectric point (pH = 7), where the retention was minimum value.Under the condition of pH = 3, the retention of Co2+ and Sr2+ achieved the highest level, which was up to 99%. The ion retention and permeability decreased with the increase of initial concentration. With the operation time exceeding 2000 min, ions retention and permeability of ceramic nanofiltration membrane were almost stable. The ceramic nanofiltration membrane showed a good potential in the application of radioactive effluent treatment.关键词
纳滤/陶瓷膜/放射性废水/离子截留Key words
nanofiltration/ceramic membrane/radioactive wastewater/ions retention分类
化学化工引用本文复制引用
陈婷,张云,陆亚伟,邱鸣慧,范益群..ZrO2-TiO2复合纳滤膜在模拟放射性废水中的应用[J].化工学报,2016,67(12):5040-5047,8.基金项目
国家高技术研究发展计划项目（2012AA03A606）；国家基金项目（91534108，21506093）；江苏高校优势学科建设工程(PAPD)；江苏省“六大人才高峰”项目(2012JNHB016)。@@@@supported by the National High Technology Research and Development Program of China (2012AA03A606), the National Natural Science Foundation of China (91534108,21506093), the Project of Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD) and the “Peak Specialists in Six Industries” High-level Specialist Fund of Jiangsu Province(2012JNHB016) （PAPD）
