Environmental Assessment of a Waste-to-Energy Cascading System Integrating Forestry Residue Pyrolysis and Poultry Litter Anaerobic Digestion
Poultry and forestry waste residues, despite their environmental concerns, offer nutrient-rich content and wider availability. Utilising them in cascading approaches can create high-value products and establish new value chains in bioeconomy. This study aims to evaluate the environmental consequence...
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-03-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/17/7/1511 |
| _version_ | 1797212684419072000 |
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| author | Maneesh Kumar Mediboyina Fionnuala Murphy |
| author_facet | Maneesh Kumar Mediboyina Fionnuala Murphy |
| author_sort | Maneesh Kumar Mediboyina |
| collection | DOAJ |
| description | Poultry and forestry waste residues, despite their environmental concerns, offer nutrient-rich content and wider availability. Utilising them in cascading approaches can create high-value products and establish new value chains in bioeconomy. This study aims to evaluate the environmental consequences of coupling forestry residue pyrolysis and poultry litter anaerobic digestion processes in a waste-to-energy cascading system. Moreover, a scenario analysis was conducted considering six scenarios with varying total solids loading with biochar (8%, 15%, and 28%) and final energy products (bioelectricity and upgraded biomethane). Life cycle assessment (LCA) results demonstrated a net reduction in selected potential impact categories across all scenarios, though with considerable variation in mitigation levels among them. Analysis revealed a major influence of selection of biogas utilisation pathway (electricity/biomethane) on overall impacts. The displaced processes such as natural gas contributed majorly towards the reduction in climate change and fossil depletion, whereas electricity grid mix contributed to terrestrial acidification and freshwater eutrophication. This study suggests that integrating pyrolysis and anaerobic digestion processes effectively valorises poultry and forestry residue waste, presenting a promising opportunity for promoting new value chains within Ireland’s bioeconomy. This approach enhances bioresource utilisation, resulting in the production of value-added products with reduced environmental costs. |
| first_indexed | 2024-04-24T10:46:18Z |
| format | Article |
| id | doaj.art-226ae257fbbb4b2cbf64f1e508239965 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-24T10:46:18Z |
| publishDate | 2024-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-226ae257fbbb4b2cbf64f1e5082399652024-04-12T13:17:36ZengMDPI AGEnergies1996-10732024-03-01177151110.3390/en17071511Environmental Assessment of a Waste-to-Energy Cascading System Integrating Forestry Residue Pyrolysis and Poultry Litter Anaerobic DigestionManeesh Kumar Mediboyina0Fionnuala Murphy1UCD School of Biosystems and Food Engineering, University College Dublin, Belfield, D04 N2E5 Dublin, IrelandUCD School of Biosystems and Food Engineering, University College Dublin, Belfield, D04 N2E5 Dublin, IrelandPoultry and forestry waste residues, despite their environmental concerns, offer nutrient-rich content and wider availability. Utilising them in cascading approaches can create high-value products and establish new value chains in bioeconomy. This study aims to evaluate the environmental consequences of coupling forestry residue pyrolysis and poultry litter anaerobic digestion processes in a waste-to-energy cascading system. Moreover, a scenario analysis was conducted considering six scenarios with varying total solids loading with biochar (8%, 15%, and 28%) and final energy products (bioelectricity and upgraded biomethane). Life cycle assessment (LCA) results demonstrated a net reduction in selected potential impact categories across all scenarios, though with considerable variation in mitigation levels among them. Analysis revealed a major influence of selection of biogas utilisation pathway (electricity/biomethane) on overall impacts. The displaced processes such as natural gas contributed majorly towards the reduction in climate change and fossil depletion, whereas electricity grid mix contributed to terrestrial acidification and freshwater eutrophication. This study suggests that integrating pyrolysis and anaerobic digestion processes effectively valorises poultry and forestry residue waste, presenting a promising opportunity for promoting new value chains within Ireland’s bioeconomy. This approach enhances bioresource utilisation, resulting in the production of value-added products with reduced environmental costs.https://www.mdpi.com/1996-1073/17/7/1511forest residuepoultry litteranaerobic digestionpyrolysislife cycle assessmentbiogas |
| spellingShingle | Maneesh Kumar Mediboyina Fionnuala Murphy Environmental Assessment of a Waste-to-Energy Cascading System Integrating Forestry Residue Pyrolysis and Poultry Litter Anaerobic Digestion Energies forest residue poultry litter anaerobic digestion pyrolysis life cycle assessment biogas |
| title | Environmental Assessment of a Waste-to-Energy Cascading System Integrating Forestry Residue Pyrolysis and Poultry Litter Anaerobic Digestion |
| title_full | Environmental Assessment of a Waste-to-Energy Cascading System Integrating Forestry Residue Pyrolysis and Poultry Litter Anaerobic Digestion |
| title_fullStr | Environmental Assessment of a Waste-to-Energy Cascading System Integrating Forestry Residue Pyrolysis and Poultry Litter Anaerobic Digestion |
| title_full_unstemmed | Environmental Assessment of a Waste-to-Energy Cascading System Integrating Forestry Residue Pyrolysis and Poultry Litter Anaerobic Digestion |
| title_short | Environmental Assessment of a Waste-to-Energy Cascading System Integrating Forestry Residue Pyrolysis and Poultry Litter Anaerobic Digestion |
| title_sort | environmental assessment of a waste to energy cascading system integrating forestry residue pyrolysis and poultry litter anaerobic digestion |
| topic | forest residue poultry litter anaerobic digestion pyrolysis life cycle assessment biogas |
| url | https://www.mdpi.com/1996-1073/17/7/1511 |
| work_keys_str_mv | AT maneeshkumarmediboyina environmentalassessmentofawastetoenergycascadingsystemintegratingforestryresiduepyrolysisandpoultrylitteranaerobicdigestion AT fionnualamurphy environmentalassessmentofawastetoenergycascadingsystemintegratingforestryresiduepyrolysisandpoultrylitteranaerobicdigestion |