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首页> 外文期刊>Journal of Residuals Science & Technology >Effective Removal of Copper (II) and Cadmium (II) by Adsorbent Prepared from Chitosan-modified Magnetic Biochar
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Effective Removal of Copper (II) and Cadmium (II) by Adsorbent Prepared from Chitosan-modified Magnetic Biochar

机译：壳聚糖修饰的磁性生物炭制备的吸附剂有效去除铜（II）和镉（II）

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摘要

A novel chitosan-modified magnetic biochar composite (CC-Fe) was synthesized by embedding Fe2O3 and assembling chitosan in two-step. The properties of CC-Fe were characterized systematically by elemental analysis, Brunauer-Emmett-Teller (BET) surface area, scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), and batch sorption processes. The prepared adsorbent composite was comprised of magnetic particulates of Fe2O3 and multifunctional group, and thus exhibited high sorption capability to remove copper (II) or cadmium (II) from waste water. For both copper (II) and cadmium (II), CC-Fe demonstrated a higher sorption capability (98% and 97%) than the non-chitosan magnetic biochar (11% and 7%). The sorption experimental results showed that the composite is a potential sorbent to remove copper (II) and cadmium (II). Due to its excellent magnetic characteristic, the heavy metal-laden CC-Fe could be isolated again from treated solution and reused after the desorption treatment. The functional groups of CC-Fe made efforts to the removal of heavy metals.
机译：通过嵌入Fe 2 O 3并分两步组装壳聚糖，合成了一种新型的壳聚糖修饰磁性生物炭复合材料（CC-Fe）。通过元素分析，Brunauer-Emmett-Teller（BET）表面积，扫描电子显微镜（SEM），傅里叶变换红外光谱（FT-IR）和分批吸附过程系统地表征了CC-Fe的特性。制备的吸附复合材料由Fe2O3和多功能基团的磁性颗粒组成，因此具有很高的吸附能力，可从废水中去除铜（II）或镉（II）。对于铜（II）和镉（II）而言，CC-Fe的吸附能力（分别为98％和97％）比非壳聚糖磁性生物炭（11％和7％）更高。吸附实验结果表明，该复合材料是去除铜（II）和镉（II）的潜在吸附剂。由于其优异的磁性，可以从处理过的溶液中再次分离出重金属CC-Fe，并在解吸处理后重新使用。 CC-Fe的官能团致力于去除重金属。

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