首页> 外文期刊>Revista de metalurgia >La eliminación de metales tóxicos presentes en efluentes líquidos mediante resinas de cambio iónico. Parte VII: Manganeso(VII))/H+/Amberlite 958
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La eliminación de metales tóxicos presentes en efluentes líquidos mediante resinas de cambio iónico. Parte VII: Manganeso(VII))/H+/Amberlite 958

机译:通过离子交换树脂消除液体废水中的有毒金属。第七部分:锰(H)/ H + / Amberlite 958

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The anionic exchange resin Amberlite 958 was used to remove manganese(VII), as permanganate ion, from aqueous solutions of different pH values. Besides the aqueous pH, other variables involved in the exchange process were investigated, including, stirring speed of the system, temperature, ionic strength and resin concentrations. The non-lineal fit of the experimental points, indicated that the equilibrium isotherm is best explained by the Langmuir equation, whereas the anion exchange equilibrium is endothermic and non-spontaneous. The Mn(VII) loading performance of Amberlite 958 resin was compared with that of other anion exchangers and multiwalled carbon nanotubes. The elution of the Mn(VII) loaded onto Amberlite 958 was investigated using hydrazine sulphate solutions, which render manganese to the eluate as the somewhat less hazardous form of Mn(II).
机译:阴离子交换树脂Amberlite 958用于从不同pH值的水溶液中除去锰(VII),即高锰酸根离子。除了水溶液的pH值外,还研究了交换过程中涉及的其他变量,包括系统的搅拌速度,温度,离子强度和树脂浓度。实验点的非线性拟合表明,用Langmuir方程可以最好地解释平衡等温线,而阴离子交换平衡是吸热的且非自发的。将Amberlite 958树脂的Mn(VII)负载性能与其他阴离子交换剂和多壁碳纳米管的负载性能进行了比较。使用硫酸肼溶液研究了负载到Amberlite 958上的Mn(VII)的洗脱,该溶液使锰以较不危险的Mn(II)形式出现在洗脱液中。

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