Comparative analysis of EBT dye removal using Spartium junceum and derived activated carbon: experimental and DFT insights DOI
Abdallah Abiza,

Abdelbaki Reffas,

Hana Boubaker

et al.

International Journal of Environmental & Analytical Chemistry, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 27

Published: Aug. 27, 2024

This study explores the use of Spartium junceum biomass (SJ) to create activated carbon (SJAC) through a one-step activation with phosphoric acid. Characterisation SJ and SJAC was conducted using FTIR spectroscopy, pHpzc measurement, nitrogen adsorption/desorption isotherms, SEM analyse their surface chemical groups, morphology, texture. Results showed that has well-developed mesoporous structure, high pore volume, significantly enhanced specific area (325.759 m2 g−1) compared raw (1.647 g−1). The adsorptive performance tested by removing anionic dye Eriochrome Black T (EBT). Using central composite design under response methodology, batch experiments were optimised for factors like pH, adsorbent dosage, initial EBT concentration, contact time. Optimal conditions determined desirability function. Adsorption data analysed various isothermal models, showing Freundlich model best described SJ, while Langmuir more suitable SJAC. exhibited an exceptional adsorption capacity 261.36 mg g−1, about five times higher than SJ. Thermodynamic analysis indicated process both sorbents spontaneous endothermic. Density functional theory used investigate mechanism on SJAC, identifying multiple mechanisms such as electrostatic interactions, filling, hydrogen bonding, π-π stacking, filling being primary maintained over 77% efficiency across four reuse cycles, highlighting its potential remediation applications.

Language: Английский

Citrullus colocynthis seeds activated with H2O2/NaOH as a promising efficient methyl green stain-removing biosorbent DOI

Ines El Mannoubi,

Mohamed Azizi,

Wafa Mohammed Alghamdi

et al.

Euro-Mediterranean Journal for Environmental Integration, Journal Year: 2024, Volume and Issue: 9(3), P. 1601 - 1617

Published: June 28, 2024

Language: Английский

Citations

1
Comparative analysis of EBT dye removal using Spartium junceum and derived activated carbon: experimental and DFT insights DOI
Abdallah Abiza,

Abdelbaki Reffas,

Hana Boubaker

et al.

International Journal of Environmental & Analytical Chemistry, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 27

Published: Aug. 27, 2024

This study explores the use of Spartium junceum biomass (SJ) to create activated carbon (SJAC) through a one-step activation with phosphoric acid. Characterisation SJ and SJAC was conducted using FTIR spectroscopy, pHpzc measurement, nitrogen adsorption/desorption isotherms, SEM analyse their surface chemical groups, morphology, texture. Results showed that has well-developed mesoporous structure, high pore volume, significantly enhanced specific area (325.759 m2 g−1) compared raw (1.647 g−1). The adsorptive performance tested by removing anionic dye Eriochrome Black T (EBT). Using central composite design under response methodology, batch experiments were optimised for factors like pH, adsorbent dosage, initial EBT concentration, contact time. Optimal conditions determined desirability function. Adsorption data analysed various isothermal models, showing Freundlich model best described SJ, while Langmuir more suitable SJAC. exhibited an exceptional adsorption capacity 261.36 mg g−1, about five times higher than SJ. Thermodynamic analysis indicated process both sorbents spontaneous endothermic. Density functional theory used investigate mechanism on SJAC, identifying multiple mechanisms such as electrostatic interactions, filling, hydrogen bonding, π-π stacking, filling being primary maintained over 77% efficiency across four reuse cycles, highlighting its potential remediation applications.

Language: Английский

Citations

1