Linear and Non-linear Modelling of Kinetics and Equilibrium Data for Cr(VI) Adsorption by Activated Carbon Prepared from Piliostigma reticulatum

Mouhamadou, Sali; Dalhatou, Sadou; Dobe, Narcisse; Djakba, Raphaël; Fasanya, Opeoluwa O.; Bansod, Naresh D.; Fita, Germaine; Ngayam, Casimir H.; Massaï, Harouna

doi:10.1007/s42250-022-00324-5

Cited by 17 publications

(2 citation statements)

References 68 publications

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“…Where kP is intraparticle rate constant, (mg/g min -1 ) [52], [53], [54]. Kinetic variables for the adsorption are shown in Table 4.…”

Section: Kinetic Studiesmentioning

confidence: 99%

“…This further indicated successful CR dye adsorption using RBT. Based on Temkin model, positive variation in adsorption energy revealed that adsorption is both endothermic and spontaneous with an R 2 value of 0.911 [52]. The effectiveness of RBT in removing CR is assessed by comparing its adsorption capacity (qm) with that of other adsorbents Table 6.…”

Section: Adsorption Isothermsmentioning

confidence: 99%

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Statistical Optimization of Operational Parameters on Congo Red Adsorption Using Upscaled Polystyrene

Regi,

Selvam

2024

Preprint

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Plastic pollution, particularly from non-biodegradable materials like polystyrene waste, remains a significant environmental concern. Additionally, water contamination with toxic dyes poses a grave threat to nature. To address these issues, waste polystyrene (thermocol) was chemically modified to create an effective dye adsorbent capable of removing harmful Congo Red (CR) dye from water-based media. Utilizing Box Behnken Design-Response Surface methodology (BBD-RSM), adsorption parameters such as adsorbent dose, pH, and contact duration were optimized. Remarkably high levels of adsorption were achieved under the following conditions: adsorbent dosage (0.02 g), pH (4), and contact duration (120 min), resulting in a removal efficiency of 98.9%. The pseudo-second-order model best described adsorption kinetics, and Langmuir isotherm analysis indicated a maximum adsorption capacity of 189.2 mg/g, with thermodynamic experiments confirming the endothermic nature of adsorption. Possible adsorption mechanisms for CR dye on adsorbent were suggested from the characterization results. To minimize solid waste from the CR-loaded adsorbent, it was processed with commercial Acrylonitrile Butadiene Styrene (ABS) through extrusion, yielding 3D printing filaments. Remarkably, these filaments maintained tensile strength and exhibited no dye leaching in aqueous environments. The synthesized adsorbent is effective in removing toxic dyes from water and offers a potential solution for managing Expanded Polystyrene (EPS) solid waste. This research contributes to sustainable practices by recovering waste materials and presents a promising approach for environmental remediation.

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“…Where kP is intraparticle rate constant, (mg/g min -1 ) [52], [53], [54]. Kinetic variables for the adsorption are shown in Table 4.…”

Section: Kinetic Studiesmentioning

confidence: 99%

Section: Adsorption Isothermsmentioning

confidence: 99%

Statistical Optimization of Operational Parameters on Congo Red Adsorption Using Upscaled Polystyrene

Regi,

Selvam

2024

Preprint

View full text Add to dashboard Cite

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A promising approach for the removal of hexavalent and trivalent chromium from aqueous solution using low-cost biomaterial

Goswami,

Devi,

Das

et al. 2024

Environ Monit Assess

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Conversion of Waste Thermocol into Effective Adsorbent by Chemical Modification: Removal of Malachite Green from Aqueous Media

Regi,

Selvam,

Murugesan

et al. 2023

J Polym Environ

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Linear and Non-linear Modelling of Kinetics and Equilibrium Data for Cr(VI) Adsorption by Activated Carbon Prepared from Piliostigma reticulatum

Cited by 17 publications

References 68 publications

Statistical Optimization of Operational Parameters on Congo Red Adsorption Using Upscaled Polystyrene

Statistical Optimization of Operational Parameters on Congo Red Adsorption Using Upscaled Polystyrene

A promising approach for the removal of hexavalent and trivalent chromium from aqueous solution using low-cost biomaterial

Conversion of Waste Thermocol into Effective Adsorbent by Chemical Modification: Removal of Malachite Green from Aqueous Media

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