Methane Production from a Rendering Waste Covered Anaerobic Digester: Greenhouse Gas Reduction and Energy Production
Livestock wastes can serve as the feedstock for biogas production (mainly methane) that could be used as an alternative energy source. The green energy derived from animal wastes is considered to be carbon neutral and offsetting the emissions generated from fossil fuels. In this study, an evaluation...
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| Language: | English |
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MDPI AG
2023-11-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/16/23/7844 |
| _version_ | 1797400161681408000 |
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| author | Nanh Lovanh John Loughrin Graciela Ruiz-Aguilar Karamat Sistani |
| author_facet | Nanh Lovanh John Loughrin Graciela Ruiz-Aguilar Karamat Sistani |
| author_sort | Nanh Lovanh |
| collection | DOAJ |
| description | Livestock wastes can serve as the feedstock for biogas production (mainly methane) that could be used as an alternative energy source. The green energy derived from animal wastes is considered to be carbon neutral and offsetting the emissions generated from fossil fuels. In this study, an evaluation of methane production from anaerobic digesters utilizing different livestock residues (e.g., poultry rendering wastewater and dairy manure) was carried out. An anaerobic continuous flow system (15 million gallons, polyethylene-covered) subjected to natural conditions (i.e., high flow rate, seasonal temperatures, etc.) containing poultry rendering wastewater was set up to evaluate methane potential and energy production. A parallel pilot-scale plug-flow anaerobic digestion system (9 m<sup>3</sup>) was also set up to test different feedstocks and operating parameters. Biogas production was sampled and monitored by gas chromatography over several months of operation. The results showed that methane production increased as the temperature increased as well as depending on the type of feedstock utilized. The covered rendering wastewater lagoon achieved an upward of 80% (<i>v</i>/<i>v</i>) methane production. The rates of methane production were 0.0478 g per g of COD for the poultry rendering wastewater and 0.0141 g per g of COD for dairy manure as feedstock. Hence, a poultry processing plant with a rendering wastewater flow rate of about 4.5 million liters per day has the potential to capture about two million kilograms of methane for energy production per year from a waste retention pond, potentially reducing global warming potential by about 50,000 tons of CO<sub>2</sub> equivalent annually. |
| first_indexed | 2024-03-09T01:51:29Z |
| format | Article |
| id | doaj.art-0ff4bbb6fcaa48a7896911e261dd3535 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-09T01:51:29Z |
| publishDate | 2023-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-0ff4bbb6fcaa48a7896911e261dd35352023-12-08T15:15:01ZengMDPI AGEnergies1996-10732023-11-011623784410.3390/en16237844Methane Production from a Rendering Waste Covered Anaerobic Digester: Greenhouse Gas Reduction and Energy ProductionNanh Lovanh0John Loughrin1Graciela Ruiz-Aguilar2Karamat Sistani3Food Animal Environmental Systems Research, Agricultural Research Service, USDA, Bowling Green, KY 42101, USAFood Animal Environmental Systems Research, Agricultural Research Service, USDA, Bowling Green, KY 42101, USADepartamento de Ciencias Ambientales, División Ciencias de la Vida, Campus Irapuato-Salamanca, Universidad de Guanajuato, Irapuato 36500, MexicoFood Animal Environmental Systems Research, Agricultural Research Service, USDA, Bowling Green, KY 42101, USALivestock wastes can serve as the feedstock for biogas production (mainly methane) that could be used as an alternative energy source. The green energy derived from animal wastes is considered to be carbon neutral and offsetting the emissions generated from fossil fuels. In this study, an evaluation of methane production from anaerobic digesters utilizing different livestock residues (e.g., poultry rendering wastewater and dairy manure) was carried out. An anaerobic continuous flow system (15 million gallons, polyethylene-covered) subjected to natural conditions (i.e., high flow rate, seasonal temperatures, etc.) containing poultry rendering wastewater was set up to evaluate methane potential and energy production. A parallel pilot-scale plug-flow anaerobic digestion system (9 m<sup>3</sup>) was also set up to test different feedstocks and operating parameters. Biogas production was sampled and monitored by gas chromatography over several months of operation. The results showed that methane production increased as the temperature increased as well as depending on the type of feedstock utilized. The covered rendering wastewater lagoon achieved an upward of 80% (<i>v</i>/<i>v</i>) methane production. The rates of methane production were 0.0478 g per g of COD for the poultry rendering wastewater and 0.0141 g per g of COD for dairy manure as feedstock. Hence, a poultry processing plant with a rendering wastewater flow rate of about 4.5 million liters per day has the potential to capture about two million kilograms of methane for energy production per year from a waste retention pond, potentially reducing global warming potential by about 50,000 tons of CO<sub>2</sub> equivalent annually.https://www.mdpi.com/1996-1073/16/23/7844livestock wasterenderinganaerobic digestiongreenhouse gasesmethanecovered pond |
| spellingShingle | Nanh Lovanh John Loughrin Graciela Ruiz-Aguilar Karamat Sistani Methane Production from a Rendering Waste Covered Anaerobic Digester: Greenhouse Gas Reduction and Energy Production Energies livestock waste rendering anaerobic digestion greenhouse gases methane covered pond |
| title | Methane Production from a Rendering Waste Covered Anaerobic Digester: Greenhouse Gas Reduction and Energy Production |
| title_full | Methane Production from a Rendering Waste Covered Anaerobic Digester: Greenhouse Gas Reduction and Energy Production |
| title_fullStr | Methane Production from a Rendering Waste Covered Anaerobic Digester: Greenhouse Gas Reduction and Energy Production |
| title_full_unstemmed | Methane Production from a Rendering Waste Covered Anaerobic Digester: Greenhouse Gas Reduction and Energy Production |
| title_short | Methane Production from a Rendering Waste Covered Anaerobic Digester: Greenhouse Gas Reduction and Energy Production |
| title_sort | methane production from a rendering waste covered anaerobic digester greenhouse gas reduction and energy production |
| topic | livestock waste rendering anaerobic digestion greenhouse gases methane covered pond |
| url | https://www.mdpi.com/1996-1073/16/23/7844 |
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