Computer Analysis of the Porous Structure of Activated Carbons Derived from Various Biomass Materials by Chemical Activation
In this study, the preparation of activated carbons from various materials of biomass origin by activation with potassium hydroxide and a comprehensive computer analysis of their porous structure and adsorption properties based on benzene (C<sub>6</sub>H<sub>6</sub>) adsorpti...
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MDPI AG
2021-07-01
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| Online Access: | https://www.mdpi.com/1996-1944/14/15/4121 |
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| author | Mirosław Kwiatkowski Elżbieta Broniek |
| author_facet | Mirosław Kwiatkowski Elżbieta Broniek |
| author_sort | Mirosław Kwiatkowski |
| collection | DOAJ |
| description | In this study, the preparation of activated carbons from various materials of biomass origin by activation with potassium hydroxide and a comprehensive computer analysis of their porous structure and adsorption properties based on benzene (C<sub>6</sub>H<sub>6</sub>) adsorption isotherms were carried out. In particular, the influence of the mass ratio of the activator’s dry mass to the char mass on the formation of the microporous structure of the obtained activated carbons was analysed. The summary of the analyses carried out based on benzene adsorption isotherms begged the conclusion that activated carbon with a maximum adsorption volume in the first adsorbed layer and homogeneous surface can be obtained from ebony wood at a mass ratio of the activator to the char of <i>R</i> = 3. The obtained results confirmed the superiority of the new numerical-clustering-based adsorption analysis (LBET) method over simple methods of porous structure analysis, such as the Brunauer–Emmett–Teller (BET) and Dubinin–Raduskevich (DR) methods. The LBET method is particularly useful in the evaluation of the influence of the methods and conditions of production of activated carbons on the formation of their porous structure. This method, together with an appropriate economic analysis, can help in the precise selection of methods and conditions for the process of obtaining activated carbons at specific manufacturing costs, and thus makes it possible to obtain materials that can successfully compete with those of other technologies used in industrial practice and everyday life. |
| first_indexed | 2024-03-10T09:13:31Z |
| format | Article |
| id | doaj.art-f001a5254ad74320a8749f3deecab0a8 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T09:13:31Z |
| publishDate | 2021-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-f001a5254ad74320a8749f3deecab0a82023-11-22T05:52:02ZengMDPI AGMaterials1996-19442021-07-011415412110.3390/ma14154121Computer Analysis of the Porous Structure of Activated Carbons Derived from Various Biomass Materials by Chemical ActivationMirosław Kwiatkowski0Elżbieta Broniek1Department of Fuel Technology, Faculty of Energy and Fuels, AGH University of Science and Technology, al. A. Mickiewicza 30, 30-059 Krakow, PolandDepartment of Chemistry and Technology of Fuels, Faculty of Chemistry, Wrocław University of Technology, Gdańska 7/9, 50-344 Wrocław, PolandIn this study, the preparation of activated carbons from various materials of biomass origin by activation with potassium hydroxide and a comprehensive computer analysis of their porous structure and adsorption properties based on benzene (C<sub>6</sub>H<sub>6</sub>) adsorption isotherms were carried out. In particular, the influence of the mass ratio of the activator’s dry mass to the char mass on the formation of the microporous structure of the obtained activated carbons was analysed. The summary of the analyses carried out based on benzene adsorption isotherms begged the conclusion that activated carbon with a maximum adsorption volume in the first adsorbed layer and homogeneous surface can be obtained from ebony wood at a mass ratio of the activator to the char of <i>R</i> = 3. The obtained results confirmed the superiority of the new numerical-clustering-based adsorption analysis (LBET) method over simple methods of porous structure analysis, such as the Brunauer–Emmett–Teller (BET) and Dubinin–Raduskevich (DR) methods. The LBET method is particularly useful in the evaluation of the influence of the methods and conditions of production of activated carbons on the formation of their porous structure. This method, together with an appropriate economic analysis, can help in the precise selection of methods and conditions for the process of obtaining activated carbons at specific manufacturing costs, and thus makes it possible to obtain materials that can successfully compete with those of other technologies used in industrial practice and everyday life.https://www.mdpi.com/1996-1944/14/15/4121biomassadsorptionporous structurechemical activationactivated carbons |
| spellingShingle | Mirosław Kwiatkowski Elżbieta Broniek Computer Analysis of the Porous Structure of Activated Carbons Derived from Various Biomass Materials by Chemical Activation Materials biomass adsorption porous structure chemical activation activated carbons |
| title | Computer Analysis of the Porous Structure of Activated Carbons Derived from Various Biomass Materials by Chemical Activation |
| title_full | Computer Analysis of the Porous Structure of Activated Carbons Derived from Various Biomass Materials by Chemical Activation |
| title_fullStr | Computer Analysis of the Porous Structure of Activated Carbons Derived from Various Biomass Materials by Chemical Activation |
| title_full_unstemmed | Computer Analysis of the Porous Structure of Activated Carbons Derived from Various Biomass Materials by Chemical Activation |
| title_short | Computer Analysis of the Porous Structure of Activated Carbons Derived from Various Biomass Materials by Chemical Activation |
| title_sort | computer analysis of the porous structure of activated carbons derived from various biomass materials by chemical activation |
| topic | biomass adsorption porous structure chemical activation activated carbons |
| url | https://www.mdpi.com/1996-1944/14/15/4121 |
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