Department of Pharmaceutical Engineering, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, PR China.
Int J Biol Macromol. 2012 Apr 1;50(3):707-12. doi: 10.1016/j.ijbiomac.2011.12.030. Epub 2012 Jan 2.
Tetraethylenepentamine (TEPA) modified sugarcane bagasse (SB), a novel biosorbent (TEPA-MSB), was proved to be an effective adsorbent for anionic dyes due to the introduced functional amino groups. FTIR, TG and DSC analysis were employed to characterize the sorbent. The effects of pH, temperature, contact time and initial concentration of dye on the adsorption of eosin Y were investigated. The experimental data fit very well to the Langmuir model, giving a maximum sorption capacity of 399.04 mg/g at 25 °C. And the kinetic data were well described by the pseudo-second-order kinetic model. pH 6 was the optimal pH for eosin Y adsorption, and the maximum adsorption capacity of TEPA-MSB calculated by Langmuir model was 18 times higher than that of SB.
四乙烯五胺（TEPA）改性甘蔗渣（SB），一种新型的生物吸附剂（TEPA-MSB），由于引入了功能氨基，被证明是一种有效的阴离子染料吸附剂。采用 FTIR、TG 和 DSC 分析对吸附剂进行了表征。考察了 pH 值、温度、接触时间和染料初始浓度对曙红 Y 吸附的影响。实验数据非常符合朗缪尔模型，在 25°C 时最大吸附容量为 399.04mg/g。动力学数据很好地描述了拟二级动力学模型。pH 6 是曙红 Y 吸附的最佳 pH 值，用朗缪尔模型计算的 TEPA-MSB 的最大吸附容量比 SB 高 18 倍。
