Co-densification of rice straw and cow dung in different food-to-microorganism ratios for biogas production
Abstract Agricultural residues such as rice straw (RS) are desirable raw materials for biogas generation. However, the recalcitrant nature of RS hinders biogas production, and its low bulk density increases storage space requirements, transportation needs, and overall costs. These challenges could b...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2024-03-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-024-52122-3 |
| _version_ | 1797259375415394304 |
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| author | Prakash Singh Pallavi Dogra Induchoodan TG Ajay S. Kalamdhad |
| author_facet | Prakash Singh Pallavi Dogra Induchoodan TG Ajay S. Kalamdhad |
| author_sort | Prakash Singh |
| collection | DOAJ |
| description | Abstract Agricultural residues such as rice straw (RS) are desirable raw materials for biogas generation. However, the recalcitrant nature of RS hinders biogas production, and its low bulk density increases storage space requirements, transportation needs, and overall costs. These challenges could be resolved by pretreatment and pelletization. In this study, various thermal pretreatments were performed, and the best conditions (temperature and time) were identified. Also, rice straw and cow dung pellets (RCP) at different food-to-microorganism (F/M) ratios (0.5–2.5) were prepared. Parameters such as bulk density, moisture absorption, and drop shatter tests were conducted to evaluate the physical properties. Finally, the biochemical methane potential (BMP) study of the best RCP with varying total solids (TS: 4–12%) content was investigated. The results indicate that hot air oven pretreatment (for 60 min at 120 °C) resulted in maximum solubilization. In physical characteristics, RCP with an F/M ratio of 2.5 pellets was ideal. The bulk density of RCP 2.5 was found to be around 25 times that of the raw. Also, the TS 8% yielded maximum biomethane (279 mL/g-VSconsumed) as compared to other TS contents. Overall, this study will propel the growth of bioenergy while simultaneously tackling the pressing issues related to RS management. |
| first_indexed | 2024-04-24T23:08:26Z |
| format | Article |
| id | doaj.art-b4b30817cced428a837dfa7faf5f6808 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-24T23:08:26Z |
| publishDate | 2024-03-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-b4b30817cced428a837dfa7faf5f68082024-03-17T12:20:44ZengNature PortfolioScientific Reports2045-23222024-03-0114111310.1038/s41598-024-52122-3Co-densification of rice straw and cow dung in different food-to-microorganism ratios for biogas productionPrakash Singh0Pallavi Dogra1Induchoodan TG2Ajay S. Kalamdhad3School of Agro and Rural Technology, Indian Institute of Technology GuwahatiDepartment of Civil Engineering, Indian Institute of Technology GuwahatiDepartment of Civil Engineering, Indian Institute of Technology GuwahatiDepartment of Civil Engineering, Indian Institute of Technology GuwahatiAbstract Agricultural residues such as rice straw (RS) are desirable raw materials for biogas generation. However, the recalcitrant nature of RS hinders biogas production, and its low bulk density increases storage space requirements, transportation needs, and overall costs. These challenges could be resolved by pretreatment and pelletization. In this study, various thermal pretreatments were performed, and the best conditions (temperature and time) were identified. Also, rice straw and cow dung pellets (RCP) at different food-to-microorganism (F/M) ratios (0.5–2.5) were prepared. Parameters such as bulk density, moisture absorption, and drop shatter tests were conducted to evaluate the physical properties. Finally, the biochemical methane potential (BMP) study of the best RCP with varying total solids (TS: 4–12%) content was investigated. The results indicate that hot air oven pretreatment (for 60 min at 120 °C) resulted in maximum solubilization. In physical characteristics, RCP with an F/M ratio of 2.5 pellets was ideal. The bulk density of RCP 2.5 was found to be around 25 times that of the raw. Also, the TS 8% yielded maximum biomethane (279 mL/g-VSconsumed) as compared to other TS contents. Overall, this study will propel the growth of bioenergy while simultaneously tackling the pressing issues related to RS management.https://doi.org/10.1038/s41598-024-52122-3 |
| spellingShingle | Prakash Singh Pallavi Dogra Induchoodan TG Ajay S. Kalamdhad Co-densification of rice straw and cow dung in different food-to-microorganism ratios for biogas production Scientific Reports |
| title | Co-densification of rice straw and cow dung in different food-to-microorganism ratios for biogas production |
| title_full | Co-densification of rice straw and cow dung in different food-to-microorganism ratios for biogas production |
| title_fullStr | Co-densification of rice straw and cow dung in different food-to-microorganism ratios for biogas production |
| title_full_unstemmed | Co-densification of rice straw and cow dung in different food-to-microorganism ratios for biogas production |
| title_short | Co-densification of rice straw and cow dung in different food-to-microorganism ratios for biogas production |
| title_sort | co densification of rice straw and cow dung in different food to microorganism ratios for biogas production |
| url | https://doi.org/10.1038/s41598-024-52122-3 |
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