Macroporous polymeric ion exchangers as adsorbents for the removal of cationic dye basic blue 9 from aqueous solutions

Abstract

Two macroporous cation-exchange resins, Purolite C145, a strongly acidic cation macroporous resin, and Purolite C107E, a weakly acidic cation-exchange resin, were used to remove the dye Basic Blue 9 (BB9) from an aqueous medium. Batch adsorption experiments were carried out to analyze the effect of various parameters, such as the phase contact time, initial dye concentration, initial solution pH, resin dose, and temperature. The experimental equilibrium data were evaluated by the Langmuir, Freundlich, and Dubinin-Radushkevich (DR) adsorption models. The Freundlich model better described the adsorption processes of the BB9 dye onto both cation exchangers, and the monolayer adsorption capacities were established as 31.9846 mg/g (C145) and 27.77 mg/g (C107E) at 20C. The values of the mean free adsorption energy (E) obtained from the DR model suggested a porous structure of the adsorbents and proposed ion exchange at the main mechanism of the adsorption process. The values of the thermodynamic parameters showed that the retention of the cationic dye was a spontaneous and endothermic process. Environmental scanning electron microscopy and Fourier transform infrared spectroscopy were used to characterize the sorbent and also to validate the adsorption mechanism as ion-exchange ones. The desorption experiments by a batch method were performed with different solutions: 0.1 and 1 mol/L HCl, 2.5 mol/L H 2 SO 4 , CH 3 OH, and a mixture between 1 mol/L HCl and CH 3 OH. Desorption performed with sulfuric acid was shown to be most effective because more than 85% of the adsorbed dye was removed. V C 2013 Wiley Periodicals, Inc. J. Appl.Polym. Sci. 2014, 131, 39620.

Anion Exchange Resins as Effective Sorbents for Removal of Acid, Reactive, and Direct Dyes from Textile Wastewaters

“…Similar observations were described for C.I. Basic Blue 9 sorption onto Purolite C 145 and Purolite C 107E resins by Suteu et al [34].…”

“…The possibility of the removal of C. [2,15,20,23,[25][26][27][28][34][35][36]. Not only the number of sulfonic groups, position of the anionic charges, whole structure of the dyes and their molecular weight but also type of the anion exchangers determined the dyes removal by these sorbents.…”

Removal of Basic Blue 9 Dye by Hydrogen Peroxide Activated by Electrogenerated Fe<sup>2+</sup>/Fe<sup>3+</sup> and Simultaneous Production of Hydrogen

“…However, degradation rate was faster during the first five minutes achieving up to 95% of the total decoloration. The removal of Basic Blue 3 dye is reported using very similar characteristics [1] with a diamond anode, where an efficiency of 100% color removal in 30 minutes is obtained, utilizing lower dye concentrations. Table 1 presents BB9 degradation behavior during the first 5 minutes of electrolysis.…”

“…Dyes are a class of organic pollutants of aquatic ecosystems coming from the effluents of various industries, such as textiles. Apart from the aesthetic problems related to colored effluents, dyes present in the aquatic environment can reduce light penetration and affect photosynthetic activity and oxygen transfer in the water [1]. Textile processing industries are widespread in developing countries.…”

Preparation of metal ions impregnated polystyrene resins for adsorption of antibiotics contaminants in aquatic environment

“…Polymer resins are good candidates for the design of antibiotics selective adsorbents due to their stable chemical structures, large surface areas, high porosity, low costs and easy regeneration. Polymer resins have demonstrated their potentials in the application in water purification, organic pollutants or heave metal removal, drug separation, and controlled drug delivery . Recent studies have investigated some commercial hypercrosslinked resins, aminated polystyrene resins, macro/microporous resins and ionic exchange resins for adsorptive removal of antibiotics, such as sulfonamides, tetracyclines, norfloxacin, nalidixic acid, trimethoprim, chloramphenical, and vancomycin .…”