Abstract
BackgroundThe type of dyes used in textile industries are synthetic dyes which are toxic and cause harm to the aquatic ecosystem; in this paper, adsorptive removal of dye Color Index Acid Orange 67 pollutant from aqueous solutions using a novel resin synthetic from waste foam packing was investigated using the batch method.ResultsThe adsorbent was characterized by Fourier-transform infrared spectroscopy (FTIR), surface morphology, and zero surface charge. Batch adsorption studies were carried out under various parameters such as contact time, pH, initial dye concentration, adsorbent dosage, and solution temperature on the removal of AO67. Experimental isotherm data were analyzed using Langmuir, Freundlich, Dubinin–Radushkevich (D-R), and Temkin isotherm models, and the isotherm constants were calculated using linear regression analysis for the determination of the isotherm parameters which describe the adsorption process. The best fit was obtained by Langmuir model. A comparison of kinetic models applied to the adsorption of Acid Orange 67 (AO67) onto resin polystyrene foam (RPSF) was evaluated for the pseudo-first-order, the pseudo-second-order, Elovich, intraparticle diffusion, and Bangham’s kinetics models. The adsorption kinetic data were properly fitted very well with the pseudo-second-order kinetic model. The thermodynamic parameters and activation energy were evaluated.ConclusionThe results have established good potentiality for the RPSF to be used as an adsorbent for the removal of AO67 from aqueous solutions. The optimum conditions attained in this study were used for removal of (RB222, RY145, and AR37) from the simulated wastewaters onto RPSF.
Highlights
The type of dyes used in textile industries are synthetic dyes which are toxic and cause harm to the aquatic ecosystem; in this paper, adsorptive removal of dye Color Index Acid Orange 67 pollutant from aqueous solutions using a novel resin synthetic from waste foam packing was investigated using the batch method
The results indicated that the uptake capacity increased with increased solution temperature from 66.8 mg/g at 25 °C to 74.2 mg/g at 60 °C, which is attributed to enhanced diffusion of Acid Orange 67 (AO67) molecules towards the active sites of resin polystyrene foam (RPSF) leading to higher adsorption capacity (Alkan et al 2008)
RPSF could almost remove over 88.5% of AO67 within 80 min of contact time; adsorbent dose 0.2 g/L and the solution pH = 2.5 ± 0.5 have important bearing on the extent of this process
Summary
The type of dyes used in textile industries are synthetic dyes which are toxic and cause harm to the aquatic ecosystem; in this paper, adsorptive removal of dye Color Index Acid Orange 67 pollutant from aqueous solutions using a novel resin synthetic from waste foam packing was investigated using the batch method. Dyes are the major pollutants of the wastewater produced by industries such as textile, paint, and cosmetics (Adak et al 2005; Hameed and Ahmad 2009; Bhattacharyya and Sharma 2005 and Hu 2007). The type of dyes used in textile industries are synthetic dyes which are toxic dyes and cause harm to the aquatic ecosystem The foam polystyrene products are ubiquitously used as insulation and used in industrial applications such as foam packaging for food, air bubble plastics, and foam drink cups (Prapat et al 2011)
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
