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ChemEngineering
Volume 7
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10.3390/chemengineering7060114
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Article

Methyl Orange Adsorption on Biochar Obtained from Prosopis juliflora Waste: Thermodynamic and Kinetic Study

by
Carlos Diaz-Uribe
1,
Jarith Ortiz
1,
Freider Duran
1,
William Vallejo
1,* and
Jayson Fals
2
1
Grupo de Fotoquímica y Fotobiología, Facultad de Ciencias Básicas, Universidad del Atlántico, Puerto Colombia 81007, Colombia
2
Grupo de Investigación en Oxi/Hidrotratamiento Catalítico y Nuevos Materiales, Facultad de Ciencias Básicas, Universidad del Atlántico, Puerto Colombia 81007, Colombia
*
Author to whom correspondence should be addressed.
ChemEngineering 2023, 7(6), 114; https://doi.org/10.3390/chemengineering7060114
Submission received: 6 September 2023 / Revised: 29 October 2023 / Accepted: 7 November 2023 / Published: 1 December 2023
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Abstract

In the information contained herein, we fabricated biochar by means of a pyrolysis process; it used Prosopis juliflora waste (PJW) as a biomass source. The physical and chemical material characterization was carried out through FTIR, thermogravimetric, BET-N2 isotherm, and SEM-EDX assays. We studied the methylene orange (MO) adsorption onto PWJ biochar. The PJW biochar displayed a maximum percentage of MO removal of 64%. The results of the adsorption study indicated that Temkin isotherm was suitable to describe the MO adsorption process on PJW biochar; it suggests that the MO adsorption on PJW biochar could be a multi-layer adsorption process. Results showed that the pseudo-second-order model was accurate in demonstrating the MO adsorption on PJW (k2 = 0.295 g mg−1min−1; qe = 8.31 mg g−1). Furthermore, the results made known that the MO removal by PJW biochar was endothermic (ΔH = 12.7 kJ/mol) and a spontaneous process (ΔG = −0.954 kJ/mol). The reusability test disclosed that after four consecutive adsorption/desorption cycles, the PWJ biochar reduced its MO removal by only 4.3%.
Keywords: environmental remediation; adsorption; biochar; recalcitrant compounds environmental remediation; adsorption; biochar; recalcitrant compounds

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MDPI and ACS Style

Diaz-Uribe, C.; Ortiz, J.; Duran, F.; Vallejo, W.; Fals, J. Methyl Orange Adsorption on Biochar Obtained from Prosopis juliflora Waste: Thermodynamic and Kinetic Study. ChemEngineering 2023, 7, 114. https://doi.org/10.3390/chemengineering7060114

AMA Style

Diaz-Uribe C, Ortiz J, Duran F, Vallejo W, Fals J. Methyl Orange Adsorption on Biochar Obtained from Prosopis juliflora Waste: Thermodynamic and Kinetic Study. ChemEngineering. 2023; 7(6):114. https://doi.org/10.3390/chemengineering7060114

Chicago/Turabian Style

Diaz-Uribe, Carlos, Jarith Ortiz, Freider Duran, William Vallejo, and Jayson Fals. 2023. "Methyl Orange Adsorption on Biochar Obtained from Prosopis juliflora Waste: Thermodynamic and Kinetic Study" ChemEngineering 7, no. 6: 114. https://doi.org/10.3390/chemengineering7060114

APA Style

Diaz-Uribe, C., Ortiz, J., Duran, F., Vallejo, W., & Fals, J. (2023). Methyl Orange Adsorption on Biochar Obtained from Prosopis juliflora Waste: Thermodynamic and Kinetic Study. ChemEngineering, 7(6), 114. https://doi.org/10.3390/chemengineering7060114

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