Abstract

The aim of the study is to check the possibility of usage of statistical calculations in determining of actual concentration of single dye in the mixture of three dyes by single full spectrum UV–Vis analysis. The paper presents the usage of the multivariate adaptive regression splines method in the study over kinetic model and equilibrium parameters of the multicomponent sorption process of three-dyed mixture on dolomitic limestone. The MARSplines method allowed for quick and simple determination of the accurate concentration of each dye in the mixture simultaneously. The best parameters of the sorption process were 100 mg/dm³ concentration of each dye and 50 mg of the bed. The equilibrium is best described by the Extended Langmuir model. The calculated values of maximum sorption capacity (q_max) for the Extended Langmuir model were: 398.23 mg/g for quinoline yellow, 101.03 mg/g for crystal violet and 269.56 mg/g for methylene blue. The kinetics of the process was best described by pseudo-second-order model, which together with Extended Langmuir model indicates the chemical type of this process.

摘要

该研究的目的是检查在通过单一全光谱 UV-Vis 分析确定三种染料混合物中单一染料的实际浓度时使用统计计算的可能性。介绍了多元自适应回归样条法在白云质石灰岩上三染色混合物多组分吸附过程动力学模型和平衡参数研究中的应用。MARSplines 方法可以快速简单地同时确定混合物中每种染料的准确浓度。吸附过程的最佳参数是每种染料的浓度为 100 mg/dm ³和床层的浓度为 50 mg。扩展朗缪尔模型最好地描述了平衡。最大吸附容量的计算值 ( q_{扩展 Langmuir 模型的最大}) 为：喹啉黄为 398.23 mg/g，结晶紫为 101.03 mg/g，亚甲蓝为 269.56 mg/g。伪二级模型最好地描述了该过程的动力学，该模型与扩展朗缪尔模型一起表明了该过程的化学类型。