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Advanced Modified Polyacrylonitrile Membrane with Enhanced Adsorption Property for Heavy Metal Ions

机译:具有增强的重金属离子吸附性能的高级改性聚丙烯腈膜

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摘要

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 Cu2+, Pb2+, Hg2+ 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 Cu2+ were well fitted by Langmuir model. The maximum adsorption capacity of the modified membrane for Cu2+ was approximately 47.6 mg/g. In addition, the prepared PAN-(DR-EDTA)3 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.
机译:首次设计制造了对重金属离子具有高吸附性能的高级改性聚丙烯腈(PAN)膜。引入的重氮树脂-乙二胺四乙酸(DR-EDTA)层可以有效吸收Cu 2 + ,Pb 2 + ,Hg 2+ < / sup>在废水中。研究了层,金属离子浓度,pH,温度和循环时间的影响。结果表明,Langmuir模型很好地拟合了Cu 2 + 的吸附等温线。改性膜对Cu 2 + 的最大吸附量约为47.6 mg / g。此外,根据其吸附/解吸循环,所制备的PAN-(DR-EDTA)3膜可再生超过720 h。结果表明,改性PAN膜可作为有效的吸附剂,用于去除废水中的重金属。

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