Department of Chemistry, Faculty of Arts and Science, Eskişehir Osmangazi University, 26480 Eskişehir, Turkey.
Colloids Surf B Biointerfaces. 2013 Jan 1;101:307-14. doi: 10.1016/j.colsurfb.2012.06.016. Epub 2012 Jun 29.
This study focused on the improvement of the decolorization potential of biomass derived from Pyracantha coccinea. Alkyl benyzldimethyl ammonium chloride (ABDAC) was used as modification agent. Batch mode decolorization potential of modified biosorbent was explored at different operating conditions. ABDAC modification significantly increased the biosorption yield to 97.27%, which was 3.88 times higher than that of natural biomass. The prepared biosorbent was effectively used for the decolorization of Reactive Red 45 contaminated solutions after the optimization of biosorption conditions. The non-linear regression analysis was used to evaluate the isotherm and kinetic model parameters. Process followed the Langmuir isotherm model and the highest monolayer capacity of 152.49 mg g(-1) was obtained with a small amount of modified biosorbent. Kinetic studies indicated fast decolorization rate of the process following the pseudo-first-order model. Biosorption performance of the prepared biosorbent was tested in RR45 containing real wastewater sample. The possible dye biosorbent interactions in the biosorption process were explored by zeta potential, scanning electron microscobe and FTIR analysis.
本研究致力于提高火棘生物质的脱色潜力。使用烷基苯扎氯铵（ABDAC）作为改性剂。在不同的操作条件下，采用批式模式探索了改性生物吸附剂的脱色潜力。ABDAC 改性显著提高了生物吸附率，达到 97.27%，比天然生物质高 3.88 倍。在优化了生物吸附条件后，该制备的生物吸附剂有效地用于处理含有活性红 45 的污染溶液的脱色。采用非线性回归分析评估了等温线和动力学模型参数。该过程遵循 Langmuir 等温线模型，使用少量改性生物吸附剂即可获得最高的单层容量 152.49mg g(-1)。动力学研究表明，该过程的脱色速率很快，符合准一级动力学模型。在含有实际废水样品的 RR45 中测试了制备的生物吸附剂的吸附性能。通过动电位、扫描电子显微镜和 FTIR 分析探索了生物吸附过程中可能的染料-生物吸附剂相互作用。
