Removal of heavy metal ions from water by complexation-assisted ultrafiltration.
Removal of heavy metal ions from water by complexation-assisted ultrafiltration.
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DOI：
10.1016/j.chemosphere.2005.11.073
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发表时间：
2006-06
期刊：
影响因子：
8.8
通讯作者：
K. Trivunac;S. Stevanović
中科院分区：
文献类型：
--
作者：
K. Trivunac;S. Stevanović
空气、土壤和水中的有毒重金属是全球性问题，对环境的威胁日益严重。因此，去除和分离有毒和环境相关的重金属离子是工业和环境应用方面的技术挑战。从水溶液中去除重金属离子的一种有前途的方法包括将金属键合到键合剂（如大分子物质）上，然后通过分离方法如膜过滤从废水中分离负载的试剂。水溶性大分子配体的选择对于开发该技术仍然很重要。考察了络合剂种类、pH值和压力对Zn（II）和Cd（II）络合物保留系数的影响。在最佳操作条件下（pH=9.0，p= 300 kPa），二乙氨基乙基纤维素对Cd ~（2+）和Zn ~（2+）的去除率分别大于95%和99%。
Toxic heavy metals in air, soil and water are global problems that are growing threat to the environment. Therefore, the removal and separation of toxic and environmentally relevant heavy metal ions are a technological challenge with respect to industrial and environmental application. A promising process for the removal of heavy metal ions from aqueous solutions involves bonding the metals to a bonding agent (such as macromolecular species), and then separating the loaded agents from wastewater by separation processes such as membrane filtration. The choice of water-soluble macroligands remains important for developing this technology. The effects of type of complexing agent, pH value and applied pressure on retention coefficients of Zn(II) and Cd(II) complexes were investigated. At best operating conditions (pH=9.0, p=300kPa) using diethylaminoethyl cellulose, the removal of Cd2+and Zn2+was more than 95% and 99%, respectively.