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以制备获得的桉树遗态Fe2O3/Fe3O4/C复合材料为吸附剂,研究了Sb(Ⅲ )不同初始质量浓度和不同温度下,其对模拟废水中Sb(Ⅲ)的静态吸附特征。结果表明,初始质量浓度为5、10和50 mg/L Sb(Ⅲ)的吸附动力学曲线有相同的变化趋势,但吸附平衡时间随初始浓度的增大而提高;4种动力学模型的拟合和回归分析显示,遗态材料对Sb(Ⅲ)的吸附动力学特征很好地遵循准2级动力学模型(R2>0.99);在25、35、45℃试验条件下,遗态材料对Sb(Ⅲ)的吸附量均随着溶液平衡浓度的增加而增加,但随温度升高呈下降趋势,遗态材料对Sb(Ⅲ)的等温吸附更适合用Freundlich等温模型拟合(R2>0.97)。
The obtained eucalyptus hemigenes Fe2O3 / Fe3O4 / C composites were used as adsorbents to study the static adsorption characteristics of Sb (Ⅲ) in simulated wastewater at different initial concentrations and temperatures of Sb (Ⅲ). The results showed that the adsorption kinetics of Sb (Ⅲ) with the initial concentrations of 5, 10 and 50 mg / L had the same trend, but the adsorption equilibrium time increased with the increase of the initial concentration. The four kinetic models According to the regression analysis, the adsorption kinetics of Sb (Ⅲ) to the Sb (Ⅲ) well follows the Quasi-2 kinetic model (R2> 0.99). Under the conditions of 25, 35 and 45 ℃, The sorption amount of Sb (Ⅲ) increases with increasing equilibrium concentration of solution, but decreases with increasing temperature. Isothermal adsorption of Sb (Ⅲ) is more suitable for the adsorption of Sb (Ⅲ) by Freundlich isotherm model (R2> 0.97 ).