Equilibrium and kinetic study of the adsorption of reactive blue, red, and yellow dyes onto activated carbon and barley husk

Sulaymon, Abbas H.; Abood, Waleed M.

doi:10.1080/19443994.2013.814374

Cited by 13 publications

(5 citation statements)

References 13 publications

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“…Activated carbon is one of the most popular adsorbents used for wastewater treatment due to its adsorption efficiency, great capacity, and very high quality of purified water [22][23][24]. In addition, adsorption on activated carbon generally does not result in the formation of harmful substances, and it can be used for the control of precursors that may form toxic compounds [25].…”

Section: Introductionmentioning

confidence: 99%

Influence of Initial pH Value on the Adsorption of Reactive Black 5 Dye on Powdered Activated Carbon: Kinetics, Mechanisms, and Thermodynamics

et al. 2022

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The aim of this work was to investigate the influence of initial pH value (pH0) on the isothermal adsorption of Reactive Black 5 (RB5) dye on commercial powdered activated carbon. Four initial pH values were chosen for this experiment: pH0 = 2.00, 4.00, 8.00, and 10.00. In order to investigate the mechanism of adsorption kinetic, studies have been performed using pseudo-first-order and pseudo-second-order kinetic models as well as an intraparticle diffusion model. In addition, thermodynamic parameters of adsorption were determined for pH0 = 4.00. Results of this research showed that the initial pH value significantly influences the adsorption of RB5 dye onto activated carbon. The highest adsorption capacities (qe) and efficiencies of decolouration were observed for initial pH values of pH0 = 2.00 (qe = 246.0 mg g−1) and 10.00 (qe = 239.1 mg g−1) due to strong electrostatic interactions and attractive π···π interactions, respectively. It was also shown that the adsorption of RB5 dye on activated carbon at all initial pH values is kinetically controlled, assuming a pseudo-second-order model, and that intraparticle diffusion is not the only process that influences on the adsorption rate.

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Section: Introductionmentioning

confidence: 99%

Influence of Initial pH Value on the Adsorption of Reactive Black 5 Dye on Powdered Activated Carbon: Kinetics, Mechanisms, and Thermodynamics

et al. 2022

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“…Ultraviolet analysis method was adopted for analyzing reactive red dyes standard curve, four samples of reactive red dyes solution were prepared (5,10, 25, 50 ) ppm concentration then tested at wavelength (540nm) [14]. A linear relationship between dye solutions concentrations and absorbance with square regression is shown in the 2017) which asserted the calcination processes of calcite led to converting the eggshell to calcium oxide [8].…”

Section: Dye Standard Curvementioning

confidence: 99%

Removing of Cadmium Ions and Reactive red Dye from Simulated Wastewater Using Eggshell as an Eco-Friendly Material

Mohamed¹,

Abood²,

Kamil³

et al. 2021

IJOIR

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The research aims to use eggshells (ES) as civilian residues in the process of removing cadmium ions and reactive red dye according to international standards limits. Synthetic solutions were prepared for cadmium ions and reactive red dye using 0.2 g non-calcined and calcined ES at various temperatures (25, 250, 500, 750, and 1000 ℃) as an adsorbent. The result showed the removal of cadmium ion was (60, 100%) for non-calcined and calcined ES, respectively, with the initial concentration of cd2+ (10 ppm). The removal of reactive red dye was (18.5, 98%) using non-calcined and calcined ES, respectively, at a concentration of red dye (50 ppm). The best removal time was 90 min. XRD and FTIR spectroscopy were performed and the results were identical to the main components of ES and changed with temperature increasing due to dissolution of calcium carbonate (CaCO3).

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“…Therefore, for describing the experimental data using two-parameter isotherms, the Langmuir model is The q m value calculated by the Langmuir equation increases with the adsorption temperature and is in the range of 257.07-297.27 mg g −1 , suggesting that the CFH-AC has a good adsorption capacity for RR 195 removal and is comparable with TiO 2 nanoparticles (87 mg g −1 ), 36 poly-pyrrole composite (204.08 mg g −1 ), 37 dried soybean leaves modified with acetic acid (12 mg g −1 ), 38 chitosan particles (82.1 mg g −1 ), 39 and AC (1.2 mg g −1 ). 40 For all the three-parameter models investigated, including Radke-Prausnitz, Redlich-Peterson, Sips, and Tóth, the isotherms are illustrated in Figure 14, and the corresponding parameters are summarized in Table 8. All the fitting curves go through most of the experimental points, and the coefficient of determination values, R 2 , are higher than 0.9853 suggesting the good correlation between the experimental data and the model applied.…”

Section: Adsorption Isothermsmentioning

confidence: 99%

Activated carbons from coffee husk: Preparation, characterization, and reactive red 195 adsorption

Thi

Ван

2020

Journal of Chemical Research

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Activated carbons are prepared from coffee husks by chemical activation with ZnCl2 and are characterized by employing Brunauer, Emmett and Teller, scanning electron microscopy, Fourier-transform infrared spectroscopy, and Boehm titrations. The effects of ZnCl2/coffee husks, activation temperature, and activation time are studied, and the results show that the sample ACZ3-600-2 has a high surface area of 1383 m2 g−1, a high pore volume of 1.6482 cm3 g−1, and numerous surface functional groups. The adsorption of reactive red 195 onto the prepared coffee husk activated carbon can be well-described by the pseudo-second-order kinetic model and is found to be controlled by film diffusion followed by intra-particle diffusion. The adsorption isotherm data obtained at 10–40 °C are analyzed and found to follow the Sips model at lower temperatures (10 and 20 °C) and the Redlich–Peterson model at higher temperatures (30 and 40 °C). The obtained thermodynamic parameters (Δ G° < 0, Δ H° = 33.487 kJ mol−1, and Δ S° = 202.30 J K−1 mol−1) suggest that the adsorption of reactive red 195 onto the prepared activated carbon is spontaneous, endothermic, and demonstrates an increasing of randomness at the adsorbate–adsorbent interface. The investigated results show that coffee husk activated carbon is an efficient adsorbent for the removal of reactive red 195 from aqueous solutions.

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Equilibrium and kinetic study of the adsorption of reactive blue, red, and yellow dyes onto activated carbon and barley husk

Cited by 13 publications

References 13 publications

Influence of Initial pH Value on the Adsorption of Reactive Black 5 Dye on Powdered Activated Carbon: Kinetics, Mechanisms, and Thermodynamics

Influence of Initial pH Value on the Adsorption of Reactive Black 5 Dye on Powdered Activated Carbon: Kinetics, Mechanisms, and Thermodynamics

Removing of Cadmium Ions and Reactive red Dye from Simulated Wastewater Using Eggshell as an Eco-Friendly Material

Activated carbons from coffee husk: Preparation, characterization, and reactive red 195 adsorption

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