Optimization and evaluation of CBSOL LE red wool dye adsorption from aqueous solution onto commercial activated carbon

Kaur, Pawanpreet; Singh, Amarinder; Prince, Andrew; Kushwaha, Jai Prakash

doi:10.1007/s13762-014-0736-3

Cited by 11 publications

(6 citation statements)

References 38 publications

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“…There was a significant increase of MB uptake up to pH 6, after which slight increases were recorded up to pH 10. This could be due to increased electrostatic interaction between the dye molecules and the adsorbent at higher pH values [35]. The results imply that percentage removal of methylene blue by Marula seed husk was lower in acidic medium.…”

Section: Resultsmentioning

confidence: 99%

Characterization of pulverized Marula seed husk and its potential for the sequestration of methylene blue from aqueous solution

2019

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Dyes are ranked as an important class of pollutants which affect the aesthetic property of the environment when present even in very low concentrations. This study was carried out to explore the potential use of an agricultural waste (Marula seed husk) to decontaminate methylene blue (MB) from aqueous solution. The effect of change in water chemistry was also examined. The influence of basic adsorption parameters such as contact time, temperature, dosage, pH and particle size on the efficiency of adsorption were investigated. Langmuir and Freundlich isotherms were used to describe the equilibrium data while Pseudo first, second order and Elovich kinetic models were used to evaluate the kinetics of the adsorption process. Thermodynamic parameters such as change in enthalpy (ΔH°), entropy (ΔS°) and Gibbs free energy (ΔG°) were evaluated. Natural surface water showed higher MB removal efficiency than de-ionized water. The sorption process was favored more in alkaline pH range (7–10). The dye adsorption process was found to be endothermic, while Δ G ° was negative implying that the reaction is spontaneous. Functional group analyses on the adsorbent showed the presence of hydroxyl, carbonyl and carboxyl groups. The Langmuir equilibrium model best described the adsorption process based on the linearized coefficient. The Pseudo second order model best described the kinetics of the reaction.

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Section: Resultsmentioning

confidence: 99%

Characterization of pulverized Marula seed husk and its potential for the sequestration of methylene blue from aqueous solution

2019

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“…However, dyes have been considered harmful organic compounds for environment, and most of the residual dyes are resistant to biodegradation processes and toxic, which caused water unfit (Kaur et al 2015). Several methods involved biological, physical, chemical and associated technologies have been reported for dyes removal.…”

Section: Introductionmentioning

confidence: 99%

“…Among the numerous techniques, adsorption is the procedure of choice and gives the best results as it can be used to remove different types of dyes, simultaneously. Currently, adsorption by activated carbon (AC) has been considered to be the most widely used and effective physical method (Alkhatib et al 2015;Kaur et al 2015;Thitame and Shukla 2016).…”

Section: Introductionmentioning

confidence: 99%

Adsorption kinetic studies for removal of methylene blue using activated carbon prepared from sugar beet pulp

Yan

Liu

et al. 2016

Int. J. Environ. Sci. Technol.

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Sugar beet pulp is an abundant, renewable and low-cost precursor for production of activated carbon. In the present study, sugar beet pulp based activated carbon was prepared by using phosphoric acid as activating agent for adsorption of methylene blue. The conditions of preparation process had a significant influence on the adsorption of methylene blue, and the optimal preparation conditions were obtained as follows: liquid-to-solid ratio of 5, temperature of 450°C and phosphoric acid concentration of 3 mol/L. The properties of sugar beet pulp based activated carbon were characterized by nitrogen adsorption isotherm. The adsorption increases as the increase of contact time, adsorption temperature and pH, and initial concentration of methylene blue. Batch kinetic studies showed that an equilibrium time of 100 min was needed for the adsorption, and the adsorbance of methylene blue is 244.76 mg/g at equilibration. Kinetic models, Weber's pore diffusion model and Boyd's equation were applied to the experimental data to study the mechanism of adsorption and the controlled step. The results showed that the adsorption kinetics followed the pseudosecond-order type kinetic model, intraparticle diffusion was not the rate-limiting mechanism and adsorption process was controlled by film diffusion.

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“…When a fluid or a known gas is used as the adsorbate, a molecular film is created on the surface of a solid adsorbent [4]. At this time, activated carbon (AC) adsorption is considered the most popular and effective physical approach [5,6]. Natural sands include active components that adsorb organic molecules with a positive charge from an aqueous solution with vigour.…”

Section: Introductionmentioning

confidence: 99%

Kinetic Studies of Wastewater Purification Using Local Sand Samples in Erbil, Kurdistan

Hanna

Shareef²,

Satar³

2022

eijs

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This research describes a straightforward procedure for extracting the pigment of Methylene Blue (MB) dye from aqueous solutions by utilizing a low-cost, safe, natural, and national source. Batch adsorption experiments were carried out to determine contact time, adsorbent dose, and the starting concentration of the adsorbate. For the analysis, a UV spectrophotometer was employed. Dye adsorption equilibrium was obtained after 120 minutes of contact time. Temkin, Langmuir, and Freundlich isotherm adsorption were used at solution concentrations of (3, 4, 6, and 8) mg/l. Adsorption data is used to predict the pseudo first and pseudo second order kinetic equations, Elovich kinetic models, and intra-particle diffusion using pseudo first and pseudo second order kinetic equations. The Langmuir adsorption model fits the MB adsorption data better than other isotherm models, with the MB capacity at 8 mg/l equal to 0.992 mg/g. The pseudo-second-order model and the adsorption kinetic data are satisfactorily related.

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Optimization and evaluation of CBSOL LE red wool dye adsorption from aqueous solution onto commercial activated carbon

Cited by 11 publications

References 38 publications

Characterization of pulverized Marula seed husk and its potential for the sequestration of methylene blue from aqueous solution

Characterization of pulverized Marula seed husk and its potential for the sequestration of methylene blue from aqueous solution

Adsorption kinetic studies for removal of methylene blue using activated carbon prepared from sugar beet pulp

Kinetic Studies of Wastewater Purification Using Local Sand Samples in Erbil, Kurdistan

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