Investigation of Optimal Temperature for Thermal Catalytic Conversion of Marine Biomass for Recovery of Higher-Added-Value Energy Products
The eutrophication process, caused by the uncollected seaweed and macroalgae, is a relevant and ongoing ecological issue. In case this biomass is collected from the seashores, it could be used as a potential feedstock for recovery of higher-added-value energy products. This paper aims to investigate...
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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/1996-1073/16/8/3457 |
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| author | Justas Eimontas Adolfas Jančauskas Kęstutis Zakarauskas Nerijus Striūgas Lina Vorotinskienė |
| author_facet | Justas Eimontas Adolfas Jančauskas Kęstutis Zakarauskas Nerijus Striūgas Lina Vorotinskienė |
| author_sort | Justas Eimontas |
| collection | DOAJ |
| description | The eutrophication process, caused by the uncollected seaweed and macroalgae, is a relevant and ongoing ecological issue. In case this biomass is collected from the seashores, it could be used as a potential feedstock for recovery of higher-added-value energy products. This paper aims to investigate the seaweed perspective of uses as a potential feedstock in the slow-pyrolysis process, using microthermal analysis combined with Fourier transform infrared spectrometry and experiments at the laboratory scale at different temperatures with two different types of zeolite catalysts. The primary investigation was performed using a micro-thermal analyser, and the results revealed that seaweed thermally decomposes in two stages, at 250 and 700 °C, while the catalyst slightly decreased the activation energy required for the process, lowering the temperatures of decomposition. Experiments on a laboratory scale showed that the most common compounds in the gaseous phase are C<sub>n</sub>H<sub>m</sub>, H<sub>2</sub>, CO, and CO<sub>2</sub>. Nevertheless, the most abundant liquid fraction derivatives are substituted phenolic compounds, pyridine, benzoic acid, naphthalene, d-glucopyranose, and d-allose. Furthermore, the catalyst decreased the amount of higher molecular mass compounds, converting them to toluene (71%), which makes this technology more attractive from the recovery of higher-added-value products point of view. |
| first_indexed | 2024-03-11T05:03:36Z |
| format | Article |
| id | doaj.art-ed0cf5f2d04f420db30341f3393cefee |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-11T05:03:36Z |
| publishDate | 2023-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-ed0cf5f2d04f420db30341f3393cefee2023-11-17T19:05:31ZengMDPI AGEnergies1996-10732023-04-01168345710.3390/en16083457Investigation of Optimal Temperature for Thermal Catalytic Conversion of Marine Biomass for Recovery of Higher-Added-Value Energy ProductsJustas Eimontas0Adolfas Jančauskas1Kęstutis Zakarauskas2Nerijus Striūgas3Lina Vorotinskienė4Laboratory of Combustion Processes, Lithuanian Energy Institute, LT-44403 Kaunas, LithuaniaLaboratory of Combustion Processes, Lithuanian Energy Institute, LT-44403 Kaunas, LithuaniaLaboratory of Combustion Processes, Lithuanian Energy Institute, LT-44403 Kaunas, LithuaniaLaboratory of Combustion Processes, Lithuanian Energy Institute, LT-44403 Kaunas, LithuaniaLaboratory of Combustion Processes, Lithuanian Energy Institute, LT-44403 Kaunas, LithuaniaThe eutrophication process, caused by the uncollected seaweed and macroalgae, is a relevant and ongoing ecological issue. In case this biomass is collected from the seashores, it could be used as a potential feedstock for recovery of higher-added-value energy products. This paper aims to investigate the seaweed perspective of uses as a potential feedstock in the slow-pyrolysis process, using microthermal analysis combined with Fourier transform infrared spectrometry and experiments at the laboratory scale at different temperatures with two different types of zeolite catalysts. The primary investigation was performed using a micro-thermal analyser, and the results revealed that seaweed thermally decomposes in two stages, at 250 and 700 °C, while the catalyst slightly decreased the activation energy required for the process, lowering the temperatures of decomposition. Experiments on a laboratory scale showed that the most common compounds in the gaseous phase are C<sub>n</sub>H<sub>m</sub>, H<sub>2</sub>, CO, and CO<sub>2</sub>. Nevertheless, the most abundant liquid fraction derivatives are substituted phenolic compounds, pyridine, benzoic acid, naphthalene, d-glucopyranose, and d-allose. Furthermore, the catalyst decreased the amount of higher molecular mass compounds, converting them to toluene (71%), which makes this technology more attractive from the recovery of higher-added-value products point of view.https://www.mdpi.com/1996-1073/16/8/3457macroalgaeslow-pyrolysisbio-oilbio-gaswaste-to-energy |
| spellingShingle | Justas Eimontas Adolfas Jančauskas Kęstutis Zakarauskas Nerijus Striūgas Lina Vorotinskienė Investigation of Optimal Temperature for Thermal Catalytic Conversion of Marine Biomass for Recovery of Higher-Added-Value Energy Products Energies macroalgae slow-pyrolysis bio-oil bio-gas waste-to-energy |
| title | Investigation of Optimal Temperature for Thermal Catalytic Conversion of Marine Biomass for Recovery of Higher-Added-Value Energy Products |
| title_full | Investigation of Optimal Temperature for Thermal Catalytic Conversion of Marine Biomass for Recovery of Higher-Added-Value Energy Products |
| title_fullStr | Investigation of Optimal Temperature for Thermal Catalytic Conversion of Marine Biomass for Recovery of Higher-Added-Value Energy Products |
| title_full_unstemmed | Investigation of Optimal Temperature for Thermal Catalytic Conversion of Marine Biomass for Recovery of Higher-Added-Value Energy Products |
| title_short | Investigation of Optimal Temperature for Thermal Catalytic Conversion of Marine Biomass for Recovery of Higher-Added-Value Energy Products |
| title_sort | investigation of optimal temperature for thermal catalytic conversion of marine biomass for recovery of higher added value energy products |
| topic | macroalgae slow-pyrolysis bio-oil bio-gas waste-to-energy |
| url | https://www.mdpi.com/1996-1073/16/8/3457 |
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