Adsorption kinetics and column operations for the removal and recovery of malachite green from wastewater using bottom ash

Gupta, Vinod Kumar; Mittal, Alok; Krishnan, Lisha; Gajbe, Vibha

doi:10.1016/j.seppur.2004.01.008

Cited by 330 publications

(208 citation statements)

References 33 publications

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“…Elements, such as Cadmium and Chromium, are considered carcinogenic, while Iron, Copper, Manganese, Zinc, and Nickel are considered essential trace elements . Painting paper, pigment, fuels, photographic materials electroplating, battery manufactures, explosive manufacturing, and metal working industries discharge a large amount of heavy metals, including Copper, Zinc, Lead, and Nickel ions in water bodies which cause serious environmental contamination (Gupta et al 2004).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of removal efficiency of heavy metals by low-cost activated carbon prepared from African palm fruit

2016

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This study details the removal of heavy metals; Cadmium, Copper, Nickel, and Lead from wastewater effluent using an activated carbon produced from African palm fruit. The effluent was obtained from Old Panteka market; a metal scrap Market located in Kaduna State, Nigeria, which has several components that constitute high level of pollution in the environment. The effect of temperature and contact time on the removal of these heavy metals using the activated carbon produced was investigated. The activated carbon showed a significant ability in removing heavy metals; Cadmium, Copper, Nickel, and Lead from the wastewater. Higher percentage removal was observed at a temperature of 80°C (93.23 ± 0.035, 96.71 ± 0.097, 92.01 ± 0.018, and 95.42 ± 0.067 % for Cadmium, Copper, Nickel, and Lead, respectively) and at an optimum contact time of 60 min (99.235 ± 0.148, 96.711 ± 0.083, 95.34 ± 0.015, and 97.750 ± 0.166 % for Cadmium, Copper, Nickel, and Lead, respectively) after which the percentage removal decreases. This work, therefore, suggests that African palm fruit can be successfully applied to solve this environmental pollution.

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Section: Introductionmentioning

confidence: 99%

Evaluation of removal efficiency of heavy metals by low-cost activated carbon prepared from African palm fruit

2016

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“…A number of techniques aimed at preferential removal of different types of dyes from wastewater have been developed [2,3]. Among these physico-chemical methods like adsorption [4,5], electrochemical coagulation [6] and photocatalytic decolourization [7] are more popular now-a-days. Among all these, adsorption is one of the methods, which is gaining more and more attention because of its easy operations and versatility.…”

Section: Introductionmentioning

confidence: 99%

Freundlich and Langmuir adsorption isotherms and kinetics for the removal of Tartrazine from aqueous solutions using hen feathers

Mittal

Kurup

Mittal

2007

Journal of Hazardous Materials

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399

148

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Tartrazine, a yellow menace, is widely being used in cosmetics, foodstuffs, medicines and textile. It is carcinogenic and also catalyzes allergic problems. In the present work the ability to remove Tartrazine from aqueous solutions has been studied using waste material-hen feathers, as adsorbent. Effects of pH, concentration of the dye, temperature and adsorbent dosage have been studied. Equilibrium isotherms for the adsorption of the dye were measured experimentally. Results were analyzed by the Freundlich and Langmuir equation at different temperatures and determined the characteristic parameters for each adsorption isotherm. The adsorption process has been found endothermic in nature and thermodynamic parameters, Gibb's free energy ( G • ), change in enthalpy ( H • ) and change in entropy ( S • ) have been calculated. The paper also includes results on the kinetic measurements of adsorption of the dye on hen feathers at different temperatures. By rate expression and treatment of data it has been established that the adsorption of Tartrazine over hen feathers follows a first-order kinetics and a film diffusion mechanism operates at all the temperatures.

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“…7a. The plots are all linear (R 2 > 0.977) and pass through the origin, which indicate that the mass transfer process in GRM-cadmium system are intraparticle-diffusioncontrolled at pH 6.0 [24,25].…”

Section: Batch Mass Transfer Studiesmentioning

confidence: 81%

Removal of cadmium from aqueous solutions by adsorption on granular red mud (GRM)

Zhu

Luan

Wang

et al. 2007

Separation and Purification Technology

149

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This study puts forward a novel method to prepare granular red mud (GRM) and evaluates its potential use to remove cadmium ions from aqueous solutions as a low-cost adsorbent. The properties of the novel adsorbent were examined and then used for cadmium adsorption experiments. Batch experiments were conducted and equilibrium isotherms at different temperatures (20• C) have been determined and analyzed with a Freundlich model. Kinetics data at initial pH 6.0 and 3.0 were fitted with Pseudo-second-order model and external mass transfer coefficients, effective particle diffusion coefficients were subsequently calculated for cadmium-GRM system at initial pH 6.0. Column breakthrough curves were depicted and the data were analyzed with a Thomas model. The column adsorption was reversal and the regeneration operation was accomplished by pumping 0.1 mol/L hydrochloric acid through the adsorbed column.

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Adsorption kinetics and column operations for the removal and recovery of malachite green from wastewater using bottom ash

Cited by 330 publications

References 33 publications

Evaluation of removal efficiency of heavy metals by low-cost activated carbon prepared from African palm fruit

Evaluation of removal efficiency of heavy metals by low-cost activated carbon prepared from African palm fruit

Freundlich and Langmuir adsorption isotherms and kinetics for the removal of Tartrazine from aqueous solutions using hen feathers

Removal of cadmium from aqueous solutions by adsorption on granular red mud (GRM)

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