Cost Assessment of Centralizing Swine Manure and Corn Stover Co-Digestion Systems
Livestock in the state of Iowa, United States (US) produce over 50 × 10<sup>6</sup> Mg of wet-basis manure yearly. Biogas production from manure’s anaerobic digestion (AD) can reduce greenhouse gas emissions, control odors, and provide renewable energy. Despite these benefits, AD is rare...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-05-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/16/11/4315 |
| _version_ | 1797597677763952640 |
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| author | Gabrielle M. Myers Daniel S. Andersen Bobby J. Martens D. Raj Raman |
| author_facet | Gabrielle M. Myers Daniel S. Andersen Bobby J. Martens D. Raj Raman |
| author_sort | Gabrielle M. Myers |
| collection | DOAJ |
| description | Livestock in the state of Iowa, United States (US) produce over 50 × 10<sup>6</sup> Mg of wet-basis manure yearly. Biogas production from manure’s anaerobic digestion (AD) can reduce greenhouse gas emissions, control odors, and provide renewable energy. Despite these benefits, AD is rarely deployed at swine farms in Iowa. In this work, we explore the economics of AD systems in Iowa to evaluate reasons for low deployment and explore the production cost impacts of biogas cleaning and injection into the natural gas grid, amending manure with biomass, and centralizing digesters across multiple farms. This work presents a static, spreadsheet-based technoeconomic model that embodies literature-based estimates of key system technical parameters, costs, and transportation fuel incentives and permits the examination of various scenarios. Key findings include that under the model assumptions, distributed, farm-scale digesters are not competitive with average natural gas prices in Iowa. A centralized production scenario can be competitive, provided that programs such as the low-carbon fuel standard (LCFS) and the renewable fuel standard (RFS) have sufficiently high credit values. |
| first_indexed | 2024-03-11T03:08:57Z |
| format | Article |
| id | doaj.art-ca3009f302114cb8a04269fd3dd33687 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-11T03:08:57Z |
| publishDate | 2023-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-ca3009f302114cb8a04269fd3dd336872023-11-18T07:47:11ZengMDPI AGEnergies1996-10732023-05-011611431510.3390/en16114315Cost Assessment of Centralizing Swine Manure and Corn Stover Co-Digestion SystemsGabrielle M. Myers0Daniel S. Andersen1Bobby J. Martens2D. Raj Raman3Department of Agricultural and Biological Systems Engineering, Iowa State University, Ames, IA 50011, USADepartment of Agricultural and Biological Systems Engineering, Iowa State University, Ames, IA 50011, USADepartment of Economics, Iowa State University, Ames, IA 50011, USADepartment of Agricultural and Biological Systems Engineering, Iowa State University, Ames, IA 50011, USALivestock in the state of Iowa, United States (US) produce over 50 × 10<sup>6</sup> Mg of wet-basis manure yearly. Biogas production from manure’s anaerobic digestion (AD) can reduce greenhouse gas emissions, control odors, and provide renewable energy. Despite these benefits, AD is rarely deployed at swine farms in Iowa. In this work, we explore the economics of AD systems in Iowa to evaluate reasons for low deployment and explore the production cost impacts of biogas cleaning and injection into the natural gas grid, amending manure with biomass, and centralizing digesters across multiple farms. This work presents a static, spreadsheet-based technoeconomic model that embodies literature-based estimates of key system technical parameters, costs, and transportation fuel incentives and permits the examination of various scenarios. Key findings include that under the model assumptions, distributed, farm-scale digesters are not competitive with average natural gas prices in Iowa. A centralized production scenario can be competitive, provided that programs such as the low-carbon fuel standard (LCFS) and the renewable fuel standard (RFS) have sufficiently high credit values.https://www.mdpi.com/1996-1073/16/11/4315anaerobic digestionbioenergycarbon creditsmanurerenewable fuelsswine |
| spellingShingle | Gabrielle M. Myers Daniel S. Andersen Bobby J. Martens D. Raj Raman Cost Assessment of Centralizing Swine Manure and Corn Stover Co-Digestion Systems Energies anaerobic digestion bioenergy carbon credits manure renewable fuels swine |
| title | Cost Assessment of Centralizing Swine Manure and Corn Stover Co-Digestion Systems |
| title_full | Cost Assessment of Centralizing Swine Manure and Corn Stover Co-Digestion Systems |
| title_fullStr | Cost Assessment of Centralizing Swine Manure and Corn Stover Co-Digestion Systems |
| title_full_unstemmed | Cost Assessment of Centralizing Swine Manure and Corn Stover Co-Digestion Systems |
| title_short | Cost Assessment of Centralizing Swine Manure and Corn Stover Co-Digestion Systems |
| title_sort | cost assessment of centralizing swine manure and corn stover co digestion systems |
| topic | anaerobic digestion bioenergy carbon credits manure renewable fuels swine |
| url | https://www.mdpi.com/1996-1073/16/11/4315 |
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