Competitive adsorption and optimization of binary mixture of textile dyes: A factorial design analysis

Abstract

In this paper, a study of simultaneous adsorption of mixture dyes of Basic Blue 41 and Basic Yellow 28 in binary system was done using two types of activated carbon and compared with a single dye system in a batch mode. A competitive adsorption between the two cationic dyes was observed and it was noticed that Basic Blue 41 was favored. Kinetics of each dye in single and binary systems was found to follow pseudo-second-order rate kinetic model, with a good correlation (higher than 0.99). The single component equilibrium data were analyzed using the Langmuir and Freundlich isotherms. Overall, the Langmuir isotherm showed a better fitting for all adsorptions under investigation in terms of correlation coefficient. As the binary adsorption is competitive, extended Langmuir models could not predict the binary component isotherm well. The essential parameters which affect the removal efficiency of binary mixture solution such as pH, temperature and adsorbent type were optimized using full factorial design methodology. Effect of parameters and interaction were analyzed using Pareto chart, main effect and interaction effect. In various industrial effluents like textile industries and plant-produced water, dyes are existent in mixture form. So, this work might be of great benefit in knowing to remove the used dyes.

Optimization of a cationic dye desorption from a loaded-lignocellulosic biomass: factorial design experiments and investigation of mechanisms

“…Positive and negative signs of their respective coefficients indicate that the parameter variation is either synergistic or antagonistic to the final desorption yield, respectively [40]. Accordingly, the model's coefficient and the adjusted determination coefficient (R 2 and R 2 adj , respectively) were calculated and found to be statistically significant at 98.961% and 96.630%, respectively, which confirms the good suitability of the theoretical model to the experimental results [41,42].…”

Simultaneous Adsorption of Cationic Dyes from Binary Solutions by Thiourea-Modified Poly(acrylonitrile-co-acrylic acid): Detailed Isotherm and Kinetic Studies

“…This is attributed to the fact that in the binary system, partial or total competitions between adsorbate ions for the binding sites on TMPAA surface occur and act as the entrapment-governing aspect. Besides, adsorption affinity of the modified polymer surface is mutually hindered by lateral interaction and rivalry between MG/MB components for the occupancy of sorption site [31,52]. A similar observation was reported Kurniawan et al (2012) for the uptake of basic dyes in a binary system by rarasaponin-bentonite [53].…”

Simultaneous Removal of Basic Dyes from Binary Systems by Modified Orange Peel and Modeling the Process by an Intelligent Tool

“…Previous studies [7][8][9] concentrated on single adsorption systems using various adsorbents. Recently, by analyzing wastewater containing dyes, it was observed that many dyes coexist simultaneously; therefore, nowadays researches are focused on multicomponent dye adsorption [10][11][12]. Thus, finding a cost-effective way to eliminate such effluents from wastewaters has attracted a lot of attention these days [13].…”