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首页> 外文期刊>Separation and Purification Technology >Efficient removal of Hg(II) using magnetic chelating resin derived from copolymerization of bisthiourea/thiourea/glutaraldehyde
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Efficient removal of Hg(II) using magnetic chelating resin derived from copolymerization of bisthiourea/thiourea/glutaraldehyde

机译：使用源自双硫脲/硫脲/戊二醛共聚的磁性螯合树脂有效去除Hg（II）

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摘要

A magnetic chelating resin was obtained through copolymerization of bisthiourea/thiourea/glutaraldehyde in the presence of magnetite (Fe3O4).The resin obtained was investigated by IR,X-ray powder diffraction (XRD) and energy dispersive X-ray (EDX) spectra.The sorption behaviour of the resin towards Hg(II) in aqueous solutions was studied.The maximum uptake capacity was found to be 4.4 mmol/g at 27 °C and dramatically increased at elevated temperature to reach 18 mmol/g at 80 °C.Similar uptake value was also obtained by soaking the resin in Hg(II) solution for 1 week at room temperature.The sorption process is endothermic and follows the pseudo-first-order kinetics.Some features about the column of the resin towards the removal of Hg(II) were also defined.The critical bed height was found to be 0.06 cm.The investigated resin was found to be able to remove 13 metal ions from wastewater matrix with efficiency of 91%.
机译：在磁铁矿（Fe3O4）存在下，通过双硫脲/硫脲/戊二醛的共聚反应制得磁性螯合树脂，并通过红外，X射线粉末衍射（XRD）和能量色散X射线（EDX）光谱对所得树脂进行了研究。研究了树脂对水溶液中Hg（II）的吸附行为，发现最大吸收容量在27°C下为4.4 mmol / g，并在高温下急剧增加，在80°C下达到18 mmol / g。通过在室温下将树脂在Hg（II）溶液中浸泡1周也获得了相似的吸收值。吸附过程是吸热的，并遵循拟一级反应动力学。还定义了Hg（II），发现临界床高度为0.06 cm，发现所研究的树脂能够从废水基质中去除13种金属离子，效率为91％。

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