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首页> 外文期刊>Journal of Applied Polymer Science >Polyethylenimine-modified sugarcane bagasse cellulose as an effective adsorbent for removing Cu(II) from aqueous solution
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Polyethylenimine-modified sugarcane bagasse cellulose as an effective adsorbent for removing Cu(II) from aqueous solution

机译：聚乙酰胺改性甘蔗果冻纤维素作为从水溶液中除去Cu（II）的有效吸附剂

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摘要

Polyethylenimine-modified sugarcane bagasse cellulose (SBCMP), as a new adsorbent, was synthesized by the reaction of polyethylenimine (PEI) with sugarcane bagasse cellulose and glutaraldehyde. The adsorption of Cu(II) by SBCMP was pH-dependent, and the higher removal efficiency of Cu(II) appeared in the range of pH 3.0-6.0. The adsorption isothermal data fitted well with the Langmuir model, and the maximum adsorption capacity of SBCMP was up to 107.5 mg/g. The adsorption kinetics was best described by the pseudo-second-order kinetic. The adsorption of Cu(II) by SBCMP was unfavorable at high temperatures, and thermodynamic analyses implied that the adsorption of Cu(II) by SBCMP was an exothermic reaction. Fourier transform infrared spectroscopy (FT-IR) combined with X-ray photoelectron spectroscopy (XPS) revealed that Cu(II) adsorption on SBCMP mainly controlled by the nitrogen atoms of -NH- group in PEI. The results of regeneration cycles showed that SBCMP was suitable for reuse in the adsorption of Cu(II) from aqueous solution. These experimental results suggested that SBCMP is expected to be a new biomass adsorbent with high efficiency in removing Cu(II) from wastewater.
机译：将聚乙烯亚胺（PEI）与甘蔗渣纤维素和戊二醛反应，合成了一种新型吸附剂——聚乙烯亚胺改性甘蔗渣纤维素（SBCMP）。SBCMP对Cu（II）的吸附具有pH依赖性，在ph3.0-6.0范围内，Cu（II）的去除率较高。吸附等温数据符合Langmuir模型，SBCMP的最大吸附容量可达107.5mg/g，吸附动力学符合拟二级动力学。SBCMP对Cu（II）的吸附在高温下是不利的，热力学分析表明SBCMP对Cu（II）的吸附是一个放热反应。傅里叶变换红外光谱（FT-IR）结合X射线光电子能谱（XPS）表明，SBCMP对Cu（II）的吸附主要受PEI中-NH-基氮原子的控制。再生循环的结果表明，SBCMP适合用于从水溶液中吸附Cu（II）。这些实验结果表明，SBCMP有望成为一种高效去除废水中Cu（II）的新型生物质吸附剂。

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