Effective toluene removal from aqueous solutions using fast pyrolysis-derived activated carbon from agricultural and forest residues: Isotherms and kinetics study
In this study, the production and characterization of activated carbons (ACs) from agricultural and forest residue using physical activation are discussed. Biomass-based biochars produced during fast pyrolysis process is introduced as alternative precursors to produce AC and the integrated process f...
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| Language: | English |
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Elsevier
2023-05-01
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| Series: | Heliyon |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2405844023029729 |
| _version_ | 1827937443660169216 |
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| author | Eliezer A. Reyes Molina Seonghyun Park Sunkyu Park Stephen S. Kelley |
| author_facet | Eliezer A. Reyes Molina Seonghyun Park Sunkyu Park Stephen S. Kelley |
| author_sort | Eliezer A. Reyes Molina |
| collection | DOAJ |
| description | In this study, the production and characterization of activated carbons (ACs) from agricultural and forest residue using physical activation are discussed. Biomass-based biochars produced during fast pyrolysis process is introduced as alternative precursors to produce AC and the integrated process for the co-production of porous adsorbent materials from biochar via the fast pyrolysis process is suggested. Moderate surface areas and good adsorption capacities were obtained from switchgrass (SWG) and pine tops (PT) based AC. The surface areas were 959 and 714 m2/g for SWG- and PT-based AC, respectively. The adsorption capacities using toluene as pollutant for two model systems of 180 and 300 ppm were measured and ranged between 441-711 and 432–716 mg/g for SWG-based and PT-based AC, respectively. The nitrogen adsorptive behavior, Lagergren pseudo-second-order kinetic (PSOK) model and kinetics isotherms studies describe a heterogeneous porous system, including a mesoporous fraction with the existence of a multilayer adsorption performance. The presence of micropores and mesopores in SWG- and PT-based AC suggests potential commercial applications for using pyrolytic biochars for AC production. |
| first_indexed | 2024-03-13T08:25:42Z |
| format | Article |
| id | doaj.art-54366993c6ff462ba7bd1bb96d6a159a |
| institution | Directory Open Access Journal |
| issn | 2405-8440 |
| language | English |
| last_indexed | 2024-03-13T08:25:42Z |
| publishDate | 2023-05-01 |
| publisher | Elsevier |
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| series | Heliyon |
| spelling | doaj.art-54366993c6ff462ba7bd1bb96d6a159a2023-05-31T04:45:28ZengElsevierHeliyon2405-84402023-05-0195e15765Effective toluene removal from aqueous solutions using fast pyrolysis-derived activated carbon from agricultural and forest residues: Isotherms and kinetics studyEliezer A. Reyes Molina0Seonghyun Park1Sunkyu Park2Stephen S. Kelley3North Carolina State University, Department of Forest Biomaterials, 2820 Faucette Dr, Raleigh, NC 27607, USA; Idaho National Laboratory, Energy and Environmental Science & Technology, Bioenergy Feedstock Technology Department. 750 MK Simpson Blv, Idaho Falls, ID 83415, USA; Corresponding author. North Carolina State University, Department of Forest Biomaterials, 2820 Faucette Dr, Raleigh, NC 27607, USA.North Carolina State University, Department of Forest Biomaterials, 2820 Faucette Dr, Raleigh, NC 27607, USANorth Carolina State University, Department of Forest Biomaterials, 2820 Faucette Dr, Raleigh, NC 27607, USANorth Carolina State University, Department of Forest Biomaterials, 2820 Faucette Dr, Raleigh, NC 27607, USAIn this study, the production and characterization of activated carbons (ACs) from agricultural and forest residue using physical activation are discussed. Biomass-based biochars produced during fast pyrolysis process is introduced as alternative precursors to produce AC and the integrated process for the co-production of porous adsorbent materials from biochar via the fast pyrolysis process is suggested. Moderate surface areas and good adsorption capacities were obtained from switchgrass (SWG) and pine tops (PT) based AC. The surface areas were 959 and 714 m2/g for SWG- and PT-based AC, respectively. The adsorption capacities using toluene as pollutant for two model systems of 180 and 300 ppm were measured and ranged between 441-711 and 432–716 mg/g for SWG-based and PT-based AC, respectively. The nitrogen adsorptive behavior, Lagergren pseudo-second-order kinetic (PSOK) model and kinetics isotherms studies describe a heterogeneous porous system, including a mesoporous fraction with the existence of a multilayer adsorption performance. The presence of micropores and mesopores in SWG- and PT-based AC suggests potential commercial applications for using pyrolytic biochars for AC production.http://www.sciencedirect.com/science/article/pii/S2405844023029729BiocharActivationToluene adsorptionKineticIsotherm |
| spellingShingle | Eliezer A. Reyes Molina Seonghyun Park Sunkyu Park Stephen S. Kelley Effective toluene removal from aqueous solutions using fast pyrolysis-derived activated carbon from agricultural and forest residues: Isotherms and kinetics study Heliyon Biochar Activation Toluene adsorption Kinetic Isotherm |
| title | Effective toluene removal from aqueous solutions using fast pyrolysis-derived activated carbon from agricultural and forest residues: Isotherms and kinetics study |
| title_full | Effective toluene removal from aqueous solutions using fast pyrolysis-derived activated carbon from agricultural and forest residues: Isotherms and kinetics study |
| title_fullStr | Effective toluene removal from aqueous solutions using fast pyrolysis-derived activated carbon from agricultural and forest residues: Isotherms and kinetics study |
| title_full_unstemmed | Effective toluene removal from aqueous solutions using fast pyrolysis-derived activated carbon from agricultural and forest residues: Isotherms and kinetics study |
| title_short | Effective toluene removal from aqueous solutions using fast pyrolysis-derived activated carbon from agricultural and forest residues: Isotherms and kinetics study |
| title_sort | effective toluene removal from aqueous solutions using fast pyrolysis derived activated carbon from agricultural and forest residues isotherms and kinetics study |
| topic | Biochar Activation Toluene adsorption Kinetic Isotherm |
| url | http://www.sciencedirect.com/science/article/pii/S2405844023029729 |
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