Pyrolysis Valorization of Vegetable Wastes: Thermal, Kinetic, Thermodynamics, and Pyrogas Analyses
<p dir="ltr">In comparison to other methods, valorising food waste through pyrolysis appears to be the most promising because it is environmentally friendly, fast, and has a low infrastructure footprint. On the other hand, understanding the pyrolytic kinetic behaviour of feedstocks i...
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2022
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| author | Samar Elkhalifa (14152110) |
| author2 | Sabah Mariyam (14150859) Hamish R. Mackey (10159514) Tareq Al-Ansari (9872268) Gordon McKay (1755814) Prakash Parthasarathy (10159511) |
| author2_role | author author author author author |
| author_facet | Samar Elkhalifa (14152110) Sabah Mariyam (14150859) Hamish R. Mackey (10159514) Tareq Al-Ansari (9872268) Gordon McKay (1755814) Prakash Parthasarathy (10159511) |
| author_role | author |
| dc.creator.none.fl_str_mv | Samar Elkhalifa (14152110) Sabah Mariyam (14150859) Hamish R. Mackey (10159514) Tareq Al-Ansari (9872268) Gordon McKay (1755814) Prakash Parthasarathy (10159511) |
| dc.date.none.fl_str_mv | 2022-08-28T09:00:00Z |
| dc.identifier.none.fl_str_mv | 10.3390/en15176277 |
| dc.relation.none.fl_str_mv | https://figshare.com/articles/journal_contribution/Pyrolysis_Valorization_of_Vegetable_Wastes_Thermal_Kinetic_Thermodynamics_and_Pyrogas_Analyses/26840071 |
| dc.rights.none.fl_str_mv | CC BY 4.0 info:eu-repo/semantics/openAccess |
| dc.subject.none.fl_str_mv | Engineering Chemical engineering Environmental engineering tomato waste cucumber waste carrot waste ternary blend pyrolysis kinetics/TGA–MS analysis |
| dc.title.none.fl_str_mv | Pyrolysis Valorization of Vegetable Wastes: Thermal, Kinetic, Thermodynamics, and Pyrogas Analyses |
| dc.type.none.fl_str_mv | Text Journal contribution info:eu-repo/semantics/publishedVersion text contribution to journal |
| description | <p dir="ltr">In comparison to other methods, valorising food waste through pyrolysis appears to be the most promising because it is environmentally friendly, fast, and has a low infrastructure footprint. On the other hand, understanding the pyrolytic kinetic behaviour of feedstocks is critical to the design of pyrolysers. As a result, the pyrolytic degradation of some common kitchen vegetable waste, such as tomato, cucumber, carrot, and their blend, has been investigated in this study using a thermogravimetric analyser. The most prevalent model fitting method, Coats–Redfern, was used for the kinetic analysis, and the various mechanisms have been investigated. Some high-quality fitting mechanisms were identified and used to estimate the thermodynamic properties. As the generation of pyrolysis gases for chemical/energy production is important to the overall process applicability, TGA-coupled mass spectrometry was used to analyse the pyrogas for individual and blend samples. By comparing the devolatilization properties of the blend with single feedstocks, the presence of chemical interactions/synergistic effects between the vegetable samples in the blend was validated. The model, based on a first-order reaction mechanism, was found to be the best-fitting model for predicting the pyrolysis kinetics. The calculated thermodynamic properties (ΔH (enthalpy change ≈ E (activation energy))) demonstrated that pyrolysis of the chosen feedstocks is technically feasible. According to the TGA–MS analysis, blending had a considerable impact on the pyrogas, resulting in CO<sub>2</sub> composition reductions of 17.10%, 9.11%, and 16.79%, respectively, in the cases of tomato, cucumber, and carrot. Overall, this study demonstrates the viability of the pyrolysis of kitchen vegetable waste as a waste management alternative, as well as an effective and sustainable source of pyrogas.</p><h2>Other Information</h2><p dir="ltr">Published in: Energies<br>License: <a href="https://creativecommons.org/licenses/by/4.0/" target="_blank">https://creativecommons.org/licenses/by/4.0/</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.3390/en15176277" target="_blank">https://dx.doi.org/10.3390/en15176277</a></p> |
| eu_rights_str_mv | openAccess |
| id | Manara2_35431341b97de7b51eabb3546ac0839a |
| identifier_str_mv | 10.3390/en15176277 |
| network_acronym_str | Manara2 |
| network_name_str | Manara2 |
| oai_identifier_str | oai:figshare.com:article/26840071 |
| publishDate | 2022 |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | CC BY 4.0 |
| spelling | Pyrolysis Valorization of Vegetable Wastes: Thermal, Kinetic, Thermodynamics, and Pyrogas AnalysesSamar Elkhalifa (14152110)Sabah Mariyam (14150859)Hamish R. Mackey (10159514)Tareq Al-Ansari (9872268)Gordon McKay (1755814)Prakash Parthasarathy (10159511)EngineeringChemical engineeringEnvironmental engineeringtomato wastecucumber wastecarrot wasteternary blendpyrolysiskinetics/TGA–MS analysis<p dir="ltr">In comparison to other methods, valorising food waste through pyrolysis appears to be the most promising because it is environmentally friendly, fast, and has a low infrastructure footprint. On the other hand, understanding the pyrolytic kinetic behaviour of feedstocks is critical to the design of pyrolysers. As a result, the pyrolytic degradation of some common kitchen vegetable waste, such as tomato, cucumber, carrot, and their blend, has been investigated in this study using a thermogravimetric analyser. The most prevalent model fitting method, Coats–Redfern, was used for the kinetic analysis, and the various mechanisms have been investigated. Some high-quality fitting mechanisms were identified and used to estimate the thermodynamic properties. As the generation of pyrolysis gases for chemical/energy production is important to the overall process applicability, TGA-coupled mass spectrometry was used to analyse the pyrogas for individual and blend samples. By comparing the devolatilization properties of the blend with single feedstocks, the presence of chemical interactions/synergistic effects between the vegetable samples in the blend was validated. The model, based on a first-order reaction mechanism, was found to be the best-fitting model for predicting the pyrolysis kinetics. The calculated thermodynamic properties (ΔH (enthalpy change ≈ E (activation energy))) demonstrated that pyrolysis of the chosen feedstocks is technically feasible. According to the TGA–MS analysis, blending had a considerable impact on the pyrogas, resulting in CO<sub>2</sub> composition reductions of 17.10%, 9.11%, and 16.79%, respectively, in the cases of tomato, cucumber, and carrot. Overall, this study demonstrates the viability of the pyrolysis of kitchen vegetable waste as a waste management alternative, as well as an effective and sustainable source of pyrogas.</p><h2>Other Information</h2><p dir="ltr">Published in: Energies<br>License: <a href="https://creativecommons.org/licenses/by/4.0/" target="_blank">https://creativecommons.org/licenses/by/4.0/</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.3390/en15176277" target="_blank">https://dx.doi.org/10.3390/en15176277</a></p>2022-08-28T09:00:00ZTextJournal contributioninfo:eu-repo/semantics/publishedVersiontextcontribution to journal10.3390/en15176277https://figshare.com/articles/journal_contribution/Pyrolysis_Valorization_of_Vegetable_Wastes_Thermal_Kinetic_Thermodynamics_and_Pyrogas_Analyses/26840071CC BY 4.0info:eu-repo/semantics/openAccessoai:figshare.com:article/268400712022-08-28T09:00:00Z |
| spellingShingle | Pyrolysis Valorization of Vegetable Wastes: Thermal, Kinetic, Thermodynamics, and Pyrogas Analyses Samar Elkhalifa (14152110) Engineering Chemical engineering Environmental engineering tomato waste cucumber waste carrot waste ternary blend pyrolysis kinetics/TGA–MS analysis |
| status_str | publishedVersion |
| title | Pyrolysis Valorization of Vegetable Wastes: Thermal, Kinetic, Thermodynamics, and Pyrogas Analyses |
| title_full | Pyrolysis Valorization of Vegetable Wastes: Thermal, Kinetic, Thermodynamics, and Pyrogas Analyses |
| title_fullStr | Pyrolysis Valorization of Vegetable Wastes: Thermal, Kinetic, Thermodynamics, and Pyrogas Analyses |
| title_full_unstemmed | Pyrolysis Valorization of Vegetable Wastes: Thermal, Kinetic, Thermodynamics, and Pyrogas Analyses |
| title_short | Pyrolysis Valorization of Vegetable Wastes: Thermal, Kinetic, Thermodynamics, and Pyrogas Analyses |
| title_sort | Pyrolysis Valorization of Vegetable Wastes: Thermal, Kinetic, Thermodynamics, and Pyrogas Analyses |
| topic | Engineering Chemical engineering Environmental engineering tomato waste cucumber waste carrot waste ternary blend pyrolysis kinetics/TGA–MS analysis |