高级改性聚丙烯腈膜，对重金属离子具有增强的吸附性能。
Advanced Modified Polyacrylonitrile Membrane with Enhanced Adsorption Property for Heavy Metal Ions.
机构信息
Institute of Biomedical Materials and Engineering, College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, China.
Laboratory for New Fiber Materials and Modern Textile, Growing Base for State Key Laboratory, College of Materials Science and Engineering, Qingdao University, Qingdao, 266071, China.
出版信息
Sci Rep. 2018 Jan 19;8(1):1260. doi: 10.1038/s41598-018-19597-3.
Advanced modified polyacrylonitrile (PAN) membrane with high adsorption property for heavy metal ions was designed and fabricated for the first time. The introduced diazoresin-ethylenediaminetetraacetic acid (DR-EDTA) layer could effectively absorb the metal ion, such as Cu, Pb, Hg in the waste water. The effects of layers, metal ion concentration, pH, temperature and cycle time were investigated. The results showed that the adsorption isotherms for Cu were well fitted by Langmuir model. The maximum adsorption capacity of the modified membrane for Cu was approximately 47.6 mg/g. In addition, the prepared PAN-(DR-EDTA) membrane could be regenerated more than 720 h based on their adsorption/desorption cycles. The results demonstrated that the modified PAN membrane could be used as effective adsorbents for heavy metal removal from waste water.
首次设计并制备了具有高吸附性能的高级改性聚丙烯腈（PAN）膜，用于重金属离子。引入的重氮树脂-乙二胺四乙酸（DR-EDTA）层可有效吸附废水中的金属离子，如 Cu、Pb、Hg。考察了层、金属离子浓度、pH 值、温度和循环时间的影响。结果表明，Cu 的吸附等温线很好地符合 Langmuir 模型。改性膜对 Cu 的最大吸附容量约为 47.6mg/g。此外，基于吸附/解吸循环，制备的 PAN-（DR-EDTA）膜可再生超过 720h。结果表明，改性 PAN 膜可用作从废水中去除重金属的有效吸附剂。
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