The Evaluation of Torrefaction Efficiency for Lignocellulosic Materials Combined with Mixed Solid Wastes
The paper presents the results of research aimed at evaluating the possibility of using selected biomass wastes to produce solid biofuels. In this work, the thermochemical properties of two lignocellulosic biomasses, namely, miscantshus (<i>Miscanthus</i> × <i>Giganteus</i>)...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-04-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/16/9/3694 |
| _version_ | 1827743015447298048 |
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| author | Maja Ivanovski Darko Goričanec Danijela Urbancl |
| author_facet | Maja Ivanovski Darko Goričanec Danijela Urbancl |
| author_sort | Maja Ivanovski |
| collection | DOAJ |
| description | The paper presents the results of research aimed at evaluating the possibility of using selected biomass wastes to produce solid biofuels. In this work, the thermochemical properties of two lignocellulosic biomasses, namely, miscantshus (<i>Miscanthus</i> × <i>Giganteus</i>) and hops (Humulus <i>lupulus</i>), and non-lignocellulosic biomass, namely, municipal solid waste, and their mixtures (micanthus + municipal solid waste and hops + municipal solid waste) were studied using the torrefaction process as the main method for investigation. The effects of various torrefaction temperatures (250, 300, and 350 °C) and times (30 and 60 min) were evaluated. Proximate and ultimate analyses were performed on the torrefied samples. The following can be stated: as the torrefaction temperature and time increased, mass and energy yields decreased while the higher heating values (HHVs) and fuel ratios (FRs) increased, together with carbon contents (C). In addition, energy on return investment (EROI) was studied; the maximum EROI of 28 was achieved for MSW biochar at 250 °C for 30 min. The results of studying greenhouse gas emissions (GHGs) showed a reduction of around 88% when using torrefied biochar as a substitute for coal. In sum, this study shows that torrefaction pre-treatment can improve the physicochemical properties of raw biomasses to a level comparable with coal, and could be helpful in better understanding the conversion of those biomasses into a valuable, solid biofuel. |
| first_indexed | 2024-03-11T04:20:00Z |
| format | Article |
| id | doaj.art-46be409ac1f64ac18d0f67f5fa3b5239 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-11T04:20:00Z |
| publishDate | 2023-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-46be409ac1f64ac18d0f67f5fa3b52392023-11-17T22:50:27ZengMDPI AGEnergies1996-10732023-04-01169369410.3390/en16093694The Evaluation of Torrefaction Efficiency for Lignocellulosic Materials Combined with Mixed Solid WastesMaja Ivanovski0Darko Goričanec1Danijela Urbancl2Faculty of Chemistry and Chemical Engineering, University of Maribor, Smetanova 17, 2000 Maribor, SloveniaFaculty of Chemistry and Chemical Engineering, University of Maribor, Smetanova 17, 2000 Maribor, SloveniaFaculty of Chemistry and Chemical Engineering, University of Maribor, Smetanova 17, 2000 Maribor, SloveniaThe paper presents the results of research aimed at evaluating the possibility of using selected biomass wastes to produce solid biofuels. In this work, the thermochemical properties of two lignocellulosic biomasses, namely, miscantshus (<i>Miscanthus</i> × <i>Giganteus</i>) and hops (Humulus <i>lupulus</i>), and non-lignocellulosic biomass, namely, municipal solid waste, and their mixtures (micanthus + municipal solid waste and hops + municipal solid waste) were studied using the torrefaction process as the main method for investigation. The effects of various torrefaction temperatures (250, 300, and 350 °C) and times (30 and 60 min) were evaluated. Proximate and ultimate analyses were performed on the torrefied samples. The following can be stated: as the torrefaction temperature and time increased, mass and energy yields decreased while the higher heating values (HHVs) and fuel ratios (FRs) increased, together with carbon contents (C). In addition, energy on return investment (EROI) was studied; the maximum EROI of 28 was achieved for MSW biochar at 250 °C for 30 min. The results of studying greenhouse gas emissions (GHGs) showed a reduction of around 88% when using torrefied biochar as a substitute for coal. In sum, this study shows that torrefaction pre-treatment can improve the physicochemical properties of raw biomasses to a level comparable with coal, and could be helpful in better understanding the conversion of those biomasses into a valuable, solid biofuel.https://www.mdpi.com/1996-1073/16/9/3694torrefactionwaste biomassrenewable energyfuel ratiogreenhouse gas emissions (GHG) |
| spellingShingle | Maja Ivanovski Darko Goričanec Danijela Urbancl The Evaluation of Torrefaction Efficiency for Lignocellulosic Materials Combined with Mixed Solid Wastes Energies torrefaction waste biomass renewable energy fuel ratio greenhouse gas emissions (GHG) |
| title | The Evaluation of Torrefaction Efficiency for Lignocellulosic Materials Combined with Mixed Solid Wastes |
| title_full | The Evaluation of Torrefaction Efficiency for Lignocellulosic Materials Combined with Mixed Solid Wastes |
| title_fullStr | The Evaluation of Torrefaction Efficiency for Lignocellulosic Materials Combined with Mixed Solid Wastes |
| title_full_unstemmed | The Evaluation of Torrefaction Efficiency for Lignocellulosic Materials Combined with Mixed Solid Wastes |
| title_short | The Evaluation of Torrefaction Efficiency for Lignocellulosic Materials Combined with Mixed Solid Wastes |
| title_sort | evaluation of torrefaction efficiency for lignocellulosic materials combined with mixed solid wastes |
| topic | torrefaction waste biomass renewable energy fuel ratio greenhouse gas emissions (GHG) |
| url | https://www.mdpi.com/1996-1073/16/9/3694 |
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