Investigating the potential of N-methylglucamine modified cellulose microspheres for Sb(iii) and Sb(v) removal from actual mine inflow†

IF 2.7 3区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

New Journal of Chemistry Pub Date : 2025-04-04 DOI:10.1039/D4NJ04913F

Jiangtao Yu, Wenkang Li, Fan Yang, Yi Yang, Juntao Yan, Deng Ding, Manman Zhang, Xueyan Que and Long Zhao

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Abstract

The global concern regarding environmental contamination caused by antimony (Sb) in water has become increasingly prominent, presenting a complex environmental challenge. To improve Sb adsorption efficiency, novel N-methylglucamine modified cellulose microspheres (Celp-g-GMA-NMG) offer a sustainable and effective solution for the simultaneous removal of Sb(III) and Sb(V) with promising application in actual mine inflow. Celp-g-GMA-NMG retain high adsorption efficiency for Sb(III) over a wide pH range. The prepared adsorbent exhibits a fast adsorption rate and high adsorption capacity of 217.61 mg g⁻¹ for Sb(III) and 49.11 mg g⁻¹ for Sb(V). The adsorption process confirms the Langmuir and pseudo-second-order kinetic model. In batch and dynamic experiments, Celp-g-GMA-NMG not only effectively removes Sb from actual mine inflow, but also simultaneously captures highly toxic arsenic. In addition, the Celp-g-GMA-NMG captured Sb(III) and Sb(V) by coordination and electrostatic interactions, respectively.

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研究n -甲基氨基葡萄糖修饰纤维素微球在实际矿井进水中去除Sb（iii）和Sb(v)的潜力

全球对水体中锑污染的关注日益突出，提出了复杂的环境挑战。为了提高锑的吸附效率，新型n -甲基氨基葡萄糖修饰纤维素微球（Celp-g-GMA-NMG）为同时去除锑（III）和锑(V)提供了一种可持续有效的解决方案，在实际矿井中具有广阔的应用前景。Celp-g-GMA-NMG在较宽的pH范围内对Sb（III）保持较高的吸附效率。制备的吸附剂对Sb（III）和Sb(V)的吸附量分别为217.61 mg g−1和49.11 mg g−1，吸附速率快，吸附量大。吸附过程符合Langmuir和拟二级动力学模型。在批量试验和动态试验中，Celp-g-GMA-NMG不仅能有效去除矿山实际涌流中的锑，还能同时捕获剧毒砷。此外，Celp-g-GMA-NMG分别通过配位和静电相互作用捕获Sb（III）和Sb(V)。

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