Adsorption of the Dye Reactive Blue 5g in Retorted Shale

Abstract

-In this study the influence of the volumetric flow rate and feed concentration was investigated for the adsorption of the reactive dye Blue 5G. Experiments were carried out in a bed packed with retorted shale, at 30 o C. The ranges investigated were flow rate 2 -10 mL/min and the feed concentration 13-105 mg/L. Mathematical models were used to represent the dynamic sorption. The double resistance model considers the effects of the axial dispersion and the mass transfer resistance of the external film and inside the particles. As a result, the mass transfer coefficient of the external film and the internal mass transfer coefficient were estimated. The Thomas model was used to simulate the experimental data. In this model the fitted parameter was the adsorption kinetic constant. The first model provided an acceptable representation of the dynamic uptake of the reactive dye Blue 5G.

Continuous electrochemical reactor improved by the addition of Moringa oleífera lam extract: optimization of operational conditions for Blue 5G dye removal

“…The color evaluation of samples was performed by light absorption (peak height) at 618 nm, which was previously determined by spectrum scanning on a PerkinElmer Spectrophotometer, dual beam, Lambda 45 model. This wavelength is in agreement with results reported in literature (Lambrecht et al, 2015). Color removal was assessed by comparing the absorbance of the samples with treatment and without it.…”

Waste Plant Material as a Potential Adsorbent of a Selected Azo Dye

“…In order to evaluate the proposed adsorption model, experiments had to be performed varying the process parameters. For this reason, the following quantities were combined: solute concentration of 50 and 75 mg/dm 3 , feed flow rate of 50, 100, 200 and 400 cm Approximations of the experimental results were performed with the Thomas model (Garba et al, 2016;Ghribi and Chlendi, 2011;Kocadagistan and Kocadagistan, 2016;Lambrecht et al 2015;Mahendra et al, 2015;Mustafa and Ebrahim, 2010;Xu et al, 2013), which does not rely on the internal and external mass transfer resistance and omits the axial dispersion phenomenon:…”

Influence of the Applied Organic Load (Olr) on Textile Wastewater Treatment Using Submerged Anaerobic Membrane Bioreactors (Sambr) in the Presence of Redox Mediator and Powdered Activated Carbon (Pac)

“…In order to provide an efficient organic matter and color removal from textile effluents, different techniques (physical, chemical and biological) have been studied and applied on pilot and full scale (Firmino et al, 2011;Teixeira et al, 2014 andLambrecht et al, 2015). Since each of these processes has technical or economic limitations, there is no single technology capable of efficiently and economically removing color from textile effluents (Van Der Zee and Villaverde, 2005), which keeps open research opportunities in this field.…”