Simultaneous adsorption of Remazol brilliant blue and Disperse orange dyes on red mud and isotherms for the mixed dye system

Abstract

The paper presents the adsorption of Remazol brilliant blue (RBB) and Disperse orange 25 (DO25) dyes from aqueous solution of the mixture of dyes onto concentrated sulphuric acid-treated red mud (ATRM). First-order derivative spectrophotometric method was developed for the analysis of RBB and DO25 in mixed dye aqueous solution to overcome the limitations arising due to interference in the zero-order spectral method. The optimum conditions to maximize RBB adsorption favoured the adsorption of RBB, and those for DO25 favoured DO25 adsorption from the mixed dye aqueous solutions. Presence of a second dye always inhibited the adsorption of a target dye. The uptake and percentage adsorption of each of the dyes onto ATRM from the aqueous solution of the mixture of dyes decreased considerably with increasing concentrations of the other dye showing the antagonistic effect. Monocomponent Langmuir isotherm fitted the mixed dye adsorption equilibrium data better than the monocomponent Freundlich isotherm. However, monocomponent models are suitable for the fixed concentration of the other dye. Modified Langmuir isotherm model adequately predicted the multi-component adsorption equilibrium data for RBB-DO25-ATRM adsorption system with a good accuracy and is more generic from the application point of view.

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

“…The results confirmed that the TMPAA polymeric adsorbent has more affinity towards MG than MB [57]. Similar antagonistic analogous trends could be noticed also in the binary dyes solution of remazol brilliant blue (RBB) and disperse orange (DO) [58], methylene blue (MB) and methyl orange (MO) [59], and methyl orange (MO) and phenol [41].…”

Simultaneous adsorption of phenol and nickel from wastewater using tea fiber waste

“…Therefore the nickel molecules will block the surface sites for the phenol molecules to adsorb. It is also due to the fact that nickel was competing more for the active sites on the adsorbent [43][44]. Therefore, it can be observed that by increasing the nickel concentration the phenol capacity was decreasing and nickel was showing antagonistic effect on the phenol.…”

Comprehensive study of simultaneous adsorption of basic red 2 and basic violet 3 by an agro-industrial waste: dynamics, kinetics and modeling

“…The wastewater containing dye molecules must, then, be treated before the discharge in the natural medium in order to overcome their negative environmental impacts [7]. Industrial wastewater treatment involves various methods: advanced oxidation processes, precipitation/coagulation, and biological treatment [8,9]. Such processes have some drawbacks, including high-energy requirement, consumption of chemicals, high operational cost, and the possible generation of toxic materials [10].…”

“…Different types of modified and raw biosorbents such as rice husk, peat, pinus Sylvestris, red mud, sugarcane bagasse, etc. have been used for the removal of cationic dyes from aqueous solutions [9,[17][18][19][20][21]. Date pits, which are agro-industrial solid wastes largely produced in MENA countries, are promising candidates as effective adsorbents [4,22].…”

“…It is important to study the adsorption of dyes in a multi-component solution since industrial effluents are loaded with a mixture of numerous and different dyes. Indeed, at laboratory scale, few studies had focused on multi-solute system adsorption due to the complexity of wastewater composition and the possible interferences and competition between molecules [9,23]. In fact, Debnath et al [23] studied the adsorption of safranine O (SO), brilliant green (BG), and methylene blue (MB) in a ternary dye system where the maximum adsorption capacities were estimated to be 67.9, 78.6, and 61.3 mg/g for SO, BG, and MB, respectively.…”