Optimization, equilibrium, kinetics and thermodynamic study of congo red dye adsorption from aqueous solutions using iraqi porcelanite rocks

Zair, Zyad R.; Alismaeel, Ziad T.; Eyssa, Mohammed Y.; M‐Ridha, Mohanad J.

doi:10.1007/s00231-022-03182-6

Cited by 8 publications

(6 citation statements)

References 73 publications

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“…Langmuir considered the formation of a monomolecular layer on the surface of the adsorbent; the other refers to the adsorption of adsorbent with only one molecule at an adsorption site, resulting in a decrease in the intermolecular force with increasing distance [ 34 ]. The aforementioned isotherms assume that the adsorbent surface is uniform, with similar as well as potentially equivalent adsorption sites [ 35 ].…”

Section: Resultsmentioning

confidence: 99%

Comprehensive Evaluation of Polyaniline-Doped Lignosulfonate in Adsorbing Dye and Heavy Metal Ions

Wu,

Li,

Wang

et al. 2023

IJMS

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Lignosulfonate/polyaniline (LS/PANI) nanocomposite adsorbent materials were prepared by the chemical polymerization of lignosulfonate with an aniline monomer as a dopant and structure-directing agent, and the adsorption behavior of dyes as well as heavy metal ions was investigated. LS/PANI composites were used as dye adsorbents for the removal of different cationic dyes (malachite green, methylene blue, and crystal violet). The adsorption behavior of LS/PANI composites as dye adsorbents for malachite green was investigated by examining the effects of the adsorbent dosage, solution pH, initial concentration of dye, adsorption time, and temperature on the adsorption properties of this dye. The following conclusions were obtained. The optimum adsorption conditions for the removal of malachite green dye when LS/PANI composites were used as malachite green dye adsorbents were as follows: an adsorbent dosage of 20 mg, an initial concentration of the dye of 250 mg/L, an adsorption time of 300 min, and a temperature of 358 K. The LS/PANI composite adsorbed malachite green dye in accordance with the Langmuir adsorption model and pseudo-second-order kinetic model, which belongs to chemisorption-based monomolecular adsorption, and the equilibrium adsorption amount was 245.75 mg/g. In particular, the adsorption of heavy metal ion Pb2+ was investigated, and the removal performance was also favorable for Pb2+.

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Section: Resultsmentioning

confidence: 99%

Comprehensive Evaluation of Polyaniline-Doped Lignosulfonate in Adsorbing Dye and Heavy Metal Ions

Wu,

Li,

Wang

et al. 2023

IJMS

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“…The higher the ∆ H 0 value for citric acid treated biosorbents in comparison to their raw peels reflecting the tighter adsorbate-adsorbent interactions at their surface interfaces, resulting in the efficient eradication of CGR from the water system. The contortion and deformation at the adsorbate-adsorbent interface associated with entropy change ( ∆ S 0 ) is also calculated from Equation (25) [79, 80]. High calculated ∆ S 0 for adsorptive removal of CGR by CPWM and CPWC is 443 and 225 Jmol -1 K -1 , respectively, as compared to 168 Jmol -1 K -1 for PWM and 138 Jmol -1 K -1 for PWC, respectively, listed in Table 5.The increased energies of activation ( ∆ E a ) calculated from Arrhenius Equation (20), for the removal of CGR from the aqueous environment on acid-treated CPWM and CPWC, are 145 and 76 kJmol -1 , respectively, whereas on PWM and PWC are 57 and 48 kJmol -1 , respectively, indicating the fast and efficient adsorptive removal of CGR on citric acid-treated adsorbents [81].…”

Section: Resultsmentioning

confidence: 99%

Eco-Friendly Detoxification of Congo Red Dye from Water by Citric Acid Activated Bioadsorbents Consisting of Watermelon and Water Chestnuts Peels Collected from Indigenous Resources

Hussain

Rehman

Imran

et al. 2022

Adsorption Science & Technology

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The native peels of two cheap, locally available adsorbents, watermelon (PWM) and water chestnuts (PWC), were chemically processed with different chemicals as modifying agents for the determination and assessment of their adsorption ability for the removal and clearance of harmful, venomous, and pernicious Congo red (CGR), as an acidic nature anionic dye, from the aqueous system. In successive batch experiments, the citric acid-treated peels CPWM and CPWC have shown more promising adsorption performance than their raw and untreated peel counterparts due to the availability of additional adsorption active binding sites evidenced through FT-IR and SEM characterizations. In the Langmuir and Temkin models, the correlation coefficients ( R 2 ) for the adsorptive removal of CGR on CPWM, PWM, CPWC, and PWC are very close to unity, 0.99 for each case of adsorption performance. Furthermore, the q max nonlinear statistical results for the elimination of CGR on citric acid-treated adsorbents (CPWM and CPWC) are 8.3 and 7.95 mg/g whereas for their unmodified forms (PWM and PWC) are 2.23 and 4.32 mg/g, respectively, reflecting homogenous and monolayer adsorption mechanism. The greater values of B T 1.4 and 1.3 J/mole, for adsorptive removal of dye on CPWM and CPWC, respectively, as compared to their unmodified forms PWM and PWC which are 0.53 and 0.55 J/mole, respectively, indicate the stronger adsorbate-adsorbent associations. The mechanism follows the pseudo second order in the better mode, while thermodynamic statics for ΔH0,ΔG0, ΔS0, and ΔE0, indicate spontaneous and exothermic behavior of adsorption. This study tends to suggest that citric acid-modified adsorbents CPWM and CPWC may indeed be exploited efficiently to eliminate Congo red dye from wastewater.

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“…These results indicate that the pseudo-second-order model is more suitable for describing the CR adsorption behavior of the PCMCA-900. Therefore, the kinetic study results demonstrate that the overall adsorption kinetics of CR by PCMCA-900 is mainly a chemisorption-controlled process and governed by the diffusion time of adsorbate into the narrow pores [65][66][67].…”

Section: Congo Red Adsorption Analysismentioning

confidence: 89%

Potassium citrate-derived porous carbon with high CO2 capture and Congo red adsorption performance

Wang

Zhang

et al. 2023

Environ Sci Eur

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The objective is to achieve the goal of carbon neutrality, controlling CO2 emissions is a primary problem to be solved in the current environmental protection field. Eliminating the environmental pollution of dyes in industrial wastewater is also an urgent problem to be solved in the field of environmental protection. The adsorption technique is an effective way to deal with these two issues. Developing high-efficiency adsorbents is an essential work in the adsorption field. In this work, a simple carbonization method has been developed to prepare porous carbon. The morphology and structure of the prepared porous carbon were investigated by scanning electron microscopy, X-ray photoelectron spectroscopy, X-ray diffraction, and surface area measurement. By studying the influence of preparation conditions on the structure and properties of the prepared carbon materials, it was found that the carbon materials prepared at 900 ℃ (PCMCA-900) exhibited a high specific surface area of 1476 m2 g−1 and a high total pore volume of 0.951 cm3 g−1. The PCMCA-900 showed the highest CO2 uptake of 7.67 mmol g−1 at 0 ºC and the adsorption capacity of PCMCA-900 decreased by less than 5% after 10 times recycling. Moreover, when PCMCA-900 was used as an adsorbent to remove Congo red in water, an adsorption capacity of 652.3 mg g−1 was achieved. Therefore, potassium citrate-derived porous carbon is a desirable candidate for excellent CO2 adsorption and Congo red in industrial wastewater.

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Optimization, equilibrium, kinetics and thermodynamic study of congo red dye adsorption from aqueous solutions using iraqi porcelanite rocks

Cited by 8 publications

References 73 publications

Comprehensive Evaluation of Polyaniline-Doped Lignosulfonate in Adsorbing Dye and Heavy Metal Ions

Comprehensive Evaluation of Polyaniline-Doped Lignosulfonate in Adsorbing Dye and Heavy Metal Ions

Eco-Friendly Detoxification of Congo Red Dye from Water by Citric Acid Activated Bioadsorbents Consisting of Watermelon and Water Chestnuts Peels Collected from Indigenous Resources

Potassium citrate-derived porous carbon with high CO2 capture and Congo red adsorption performance

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