Adsorption of Reactive Blue 5G Dye by Activated Carbon and Pyrolyzed Shale Oil Residue

Abstract

This work was aimed at the study of the adsorption mechanism of Reactive Blue 5G dye on activated carbon derived from babassu shells and pyrolyzed oil shale residue. Experiments were undertaken employing a fixed bed reactor at 30°C using continuous systems. To minimize diffusional resistances, the influence of the flow rate was investigated via breakthrough curves at a feed concentration of 35 mg/ᐉ. Breakthrough curves for flows in the range 2-10 mᐉ/min were carried out using bed height of 15.5 cm for activated carbon and 9.5 cm for pyrolyzed oil shale residue, with an inlet diameter of 1.01 cm. From the calculated mass-transfer parameters, it was shown that the minimum resistance to flow occurred at 4 mᐉ/min for activated carbon and at 2 mᐉ/min for pyrolyzed oil shale residue. It was concluded that the sizes of the pores in the adsorbents play an important role in the adsorption mechanism.

Biodegradation of Turquoise Blue Dye by Bacillus Megaterium Isolated from Industrial Effluent

“…Among these dyes, turquoise blue QG, a well known reactive dye, is widely used in the textile industry. The resulting textile wastewater is of a deep blue colour that affects water quality by inhibiting the penetration of sunlight and thus reducing photosynthetic activity [9,10]. Reactive dyes have large and important group of chemical pollutants for aquatic ecosystem because of their toxicity and carcinogenicity [5,11].…”

Adsorption of turquoise blue QG reactive bye commercial activated carbon in batch reactor: kinetic and equilibrium studies

“…Among these dyes, turquoise blue QG, a wellknown reactive dye, is widely used in the Brazilian textile industry. The resulting textile wastewater is of a deep blue color that affects water quality by inhibiting the penetration of sunlight and thus reducing photosynthetic activity (Rodríguez et al, 2009;Lambrecht et al, 2007).…”

“…Activated carbon adsorption processes are often used for this purpose due to their versatility, efficiency and low operating costs (Matta et al, 2008;Lambrecht et al, 2007). Owing to its structural characteristics, specifically its large surface area and high pore distribution, activated carbon is a highly efficient adsorbent (Bangash and Alam, 2009).…”

Monolayer–multilayer adsorption phenomenological model: Kinetics, equilibrium and thermodynamics

“…The possibility of multilayer adsorption increases significantly the adsorption capacity of the SB biomass, in comparison Lambrecht et al [40] achieved 0.88 and 1.23 mg g -1 of RB5G dye uptake with activated carbon and pyrolyzed shale oil residue as adsorbent materials.…”