摘要
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)。
Under different temperatures and initial concentration of Sb（III）, static adsorption of Sb（III） in wastewater by using a porous biomorph-genetic composite of Fe2O3/Fe3O4/C （PBGC-Fe/C） as adsorbents was studied. The results showed that the kinetic curve of Sb（llI） adsorption by morph-genetic materials had same change trend under initial concentration of 5, 10 and 50 mg/L. However, the adsorption equilibrium time was prolonged with increasing of initial concentration. Fitting and regression analysis of four kinds of kinetic model indicated that, the adsorption kinetics of Sb（Ⅲ） by the PBGC-Fe/C well follow the pseudo-second-order.model （R2〉0.99）. At different reaction temperattire （25℃, 35 ℃ and 45℃）, the adsorption capacity of Sb （III） by PBGC-Fe/C both increased with increasing the solution equilibrium concentration. While it showed a declined tendency with temperature increased. The freundlich isotherm model had better fitted with the equilibrium data （R2〉0.97）.
出处
《水处理技术》
CAS
CSCD
北大核心
2013年第5期23-26,共4页
Technology of Water Treatment
基金
国家自然科学基金项目(NSFC40773059,NSFC41263009)
广西自然科学基金(桂科自0832020Z,2011GXNSFF018003,2011GXNSFA018013)
广西科技攻关计划项目(桂科重1298002-3)
