Synthesis and Characterization of Biochar-Based Geopolymer Materials
The aim of this research is to evaluate the possibility to realize alkali-activated materials exploiting biochar, a secondary raw material coming from pyrolysis/gasification processes, for environmental benefits, such as improvement of soil fertility and reduction of CO<sub>2</sub> emiss...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-11-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/11/22/10945 |
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| author | Federica Piccolo Fernanda Andreola Luisa Barbieri Isabella Lancellotti |
| author_facet | Federica Piccolo Fernanda Andreola Luisa Barbieri Isabella Lancellotti |
| author_sort | Federica Piccolo |
| collection | DOAJ |
| description | The aim of this research is to evaluate the possibility to realize alkali-activated materials exploiting biochar, a secondary raw material coming from pyrolysis/gasification processes, for environmental benefits, such as improvement of soil fertility and reduction of CO<sub>2</sub> emissions into the atmosphere thanks to the carbon sink process where carbon dioxide is subtracted from the cycle of carbon. For the matrix of the geopolymers, a waste material derived from incinerator bottom ash was used and compared to pure metakaolin matrix. The materials obtained are lightweight and porous, with high water absorption capacity and moisture adsorption/desorption. BET analysis shows an increase in specific surface by increasing the biochar content and the biochar acts as a filler in the pores. From porosimetry analysis it is possible to follow the evolution of the curing process of the geopolymer prepared: specimens containing 70 wt% biochar after 28 and 90 days showed an increase in total Hg intrusion volume, pore area and total porosity but a decrease in the dimensions of pores. Due to the technical properties of materials containing biochar, they can be used in the future for a cleaner design of products in the field of sustainable construction for insulating panels or lightweight materials for houses and gardens in terraces and balconies. |
| first_indexed | 2024-03-10T05:43:44Z |
| format | Article |
| id | doaj.art-f15e1357ef034802a4645d0aa81f0057 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T05:43:44Z |
| publishDate | 2021-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-f15e1357ef034802a4645d0aa81f00572023-11-22T22:21:17ZengMDPI AGApplied Sciences2076-34172021-11-0111221094510.3390/app112210945Synthesis and Characterization of Biochar-Based Geopolymer MaterialsFederica Piccolo0Fernanda Andreola1Luisa Barbieri2Isabella Lancellotti3Department of Engineering “Enzo Ferrari”, University of Modena and Reggio Emilia, 41126 Modena, ItalyDepartment of Engineering “Enzo Ferrari”, University of Modena and Reggio Emilia, 41126 Modena, ItalyDepartment of Engineering “Enzo Ferrari”, University of Modena and Reggio Emilia, 41126 Modena, ItalyDepartment of Engineering “Enzo Ferrari”, University of Modena and Reggio Emilia, 41126 Modena, ItalyThe aim of this research is to evaluate the possibility to realize alkali-activated materials exploiting biochar, a secondary raw material coming from pyrolysis/gasification processes, for environmental benefits, such as improvement of soil fertility and reduction of CO<sub>2</sub> emissions into the atmosphere thanks to the carbon sink process where carbon dioxide is subtracted from the cycle of carbon. For the matrix of the geopolymers, a waste material derived from incinerator bottom ash was used and compared to pure metakaolin matrix. The materials obtained are lightweight and porous, with high water absorption capacity and moisture adsorption/desorption. BET analysis shows an increase in specific surface by increasing the biochar content and the biochar acts as a filler in the pores. From porosimetry analysis it is possible to follow the evolution of the curing process of the geopolymer prepared: specimens containing 70 wt% biochar after 28 and 90 days showed an increase in total Hg intrusion volume, pore area and total porosity but a decrease in the dimensions of pores. Due to the technical properties of materials containing biochar, they can be used in the future for a cleaner design of products in the field of sustainable construction for insulating panels or lightweight materials for houses and gardens in terraces and balconies.https://www.mdpi.com/2076-3417/11/22/10945geopolymerbiocharbottom ashlightweight material |
| spellingShingle | Federica Piccolo Fernanda Andreola Luisa Barbieri Isabella Lancellotti Synthesis and Characterization of Biochar-Based Geopolymer Materials Applied Sciences geopolymer biochar bottom ash lightweight material |
| title | Synthesis and Characterization of Biochar-Based Geopolymer Materials |
| title_full | Synthesis and Characterization of Biochar-Based Geopolymer Materials |
| title_fullStr | Synthesis and Characterization of Biochar-Based Geopolymer Materials |
| title_full_unstemmed | Synthesis and Characterization of Biochar-Based Geopolymer Materials |
| title_short | Synthesis and Characterization of Biochar-Based Geopolymer Materials |
| title_sort | synthesis and characterization of biochar based geopolymer materials |
| topic | geopolymer biochar bottom ash lightweight material |
| url | https://www.mdpi.com/2076-3417/11/22/10945 |
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