Effective removal of cationic dye on activated carbon made from cactus fruit peels: a combined experimental and theoretical study

This article investigates experimentally and theoretically the adsorption of Basic Red 46 cationic dye (BR46) using activated carbon generated from cactus fruit peels (ACCFP). The prepared adsorbent was characterized by different analytical tools showing a good surface for the uptake of pollutants....

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Bibliographic Details
Published in:Environmental science and pollution research international 2023, Vol.30 (2), p.3027-3044
Main Authors: Akkari, Imane, Graba, Zahra, Bezzi, Nacer, Kaci, Mohamed Mehdi, Merzeg, Farid Ait, Bait, Nadia, Ferhati, Azedine, Dotto, Guilherme L., Benguerba, Yacine
Format: Article
Language:English
Subjects:
Activated carbon
Adsorbates
Adsorbents
Adsorption
Aquatic Pollution
Atmospheric Protection/Air Quality Control/Air Pollution
cactus pears
Cationic dyes
Charcoal
Dyes
Earth and Environmental Science
Ecotoxicology
endothermy
Environment
Environmental Chemistry
Environmental Health
Environmental science
fabrics
Fruit
Fruits
Hydrogen-Ion Concentration
Kinetics
Laboratories
Models, Theoretical
Molecular interactions
Organic chemicals
Pollutants
Process engineering
Research Article
sorption isotherms
Textile industry wastewaters
Thermodynamics
Waste Water Technology
wastewater
Water Management
Water Pollutants, Chemical
Water Pollution Control
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Summary:This article investigates experimentally and theoretically the adsorption of Basic Red 46 cationic dye (BR46) using activated carbon generated from cactus fruit peels (ACCFP). The prepared adsorbent was characterized by different analytical tools showing a good surface for the uptake of pollutants. A maximum batch adsorption capacity of 806.38 mg g −1 was achieved at optimal conditions. The Freundlich model best represented the equilibrium data, although the pseudo-second-order kinetic model best described the adsorption kinetics. The thermodynamic studies demonstrated that the adsorption process was spontaneous (Δ G ° < 0) and endothermic (Δ H ° = 32.512 kJ mol −1 ). DFT descriptors were combined with COSMO-RS and AIM theory to provide a complete picture of the adsorbate/adsorbent system and its molecular interactions. Last, the ACCFP was regenerable up to four times, emphasizing the idea of using it as an adsorbent to treat textile wastewaters.
ISSN:0944-1344
1614-7499
DOI:10.1007/s11356-022-22402-4