Importance of maintaining the freshness of cattle manure for enhanced biogas production
Contact us if these videos are not relevant.
Contact us if these videos are not relevant.
View abstract on PubMed
Summary
This summary is machine-generated.Storing cattle manure (CM) for extended periods significantly reduces its methane yield (MY) due to the depletion of essential organic compounds. Minimizing storage time is crucial for maximizing biogas production from CM.
Area Of Science
- Biotechnology
- Environmental Science
- Microbiology
Background
- Cattle manure (CM) is a valuable resource for biogas production, rich in organics and nutrients.
- Indigenous microbial activity during storage can degrade CM, reducing its energy potential and methane yield (MY).
Purpose Of The Study
- To investigate the impact of cattle manure storage duration on methane yield.
- To understand the microbial and biochemical mechanisms behind changes in methane yield during storage.
Main Methods
- Conducted batch and semi-continuous experiments using fresh and aged cattle manure.
- Analyzed methane yield (MY) based on volatile solids (VS).
- Assessed microbial community shifts and specific methanogenic activity (SMA).
Main Results
- Fresh CM (1-3 days storage) yielded 0.207 L CH4/g VS, 1.66 times higher than old CM (2-3 months storage).
- Old CM resulted in the lowest MY (0.06 L CH4/g VS) at an organic loading rate (OLR) of 2.6 g VS/L/d.
- Fresh CM supported higher relative abundance of protein-degrading bacteria and hydrogenotrophic methanogens, leading to increased SMA.
Conclusions
- Extended storage depletes readily degradable proteinaceous organics in CM, reducing methane yield.
- Minimizing CM storage duration is essential for optimizing biogas production and energy recovery.
Contact us if these videos are not relevant.
Contact us if these videos are not relevant.
Related Concept Videos
Microorganisms play a pivotal role in maintaining ecosystem balance by recycling essential elements such as carbon, nitrogen, and phosphorus, as well as supporting processes like bioremediation, wastewater treatment, and biofuel production.Microbes in Elemental CyclesIn the carbon cycle, microorganisms decompose organic matter, releasing carbon dioxide via aerobic respiration. This carbon dioxide is subsequently used by photosynthetic organisms to synthesize organic compounds, closing the...
Microorganisms play a crucial role in agriculture and the food industry, contributing to soil fertility, crop protection, and food production. Their functions range from nitrogen fixation and biopesticide production to fermentation and food preservation, making them indispensable to sustainable farming and food safety.Role in AgricultureNitrogen-fixing bacteria, such as Rhizobium (symbiotic) and Azotobacter (free-living), convert atmospheric nitrogen into ammonia through biological nitrogen...
Nitrogen is a very important element for life because it is a major constituent of proteins and nucleic acids. It is a macronutrient, and in nature, it is recycled from organic compounds and stored in the form of ammonia, ammonium ions, nitrate, nitrite, or nitrogen gas by many metabolic processes. Many of these metabolic processes are carried out only by prokaryotes.
The largest pool of nitrogen available in the terrestrial ecosystem is gaseous nitrogen (N2) from the air, but this...
Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.
Agricultural Bioremediation
Bioremediation is a useful process in which microbes and bacteria are used to remove toxins and pollutants from the environment. In agricultural practices, the use of fertilizers and pesticides can result in leaching of...
Pure cultures, defined as the growth of a single microorganism species isolated from mixed populations, are fundamental tools in microbiological research and practical applications. These cultures ensure genetic and physiological uniformity, allowing researchers to study microbial traits under controlled conditions.Isolation and Maintenance of Pure CulturesObtaining a pure culture involves isolating a single microbial type from a mixed sample through techniques such as serial dilutions, streak...
Animals have evolved different strategies for excretion, the removal of waste from the body. Most waste must be dissolved in water to be excreted, so an animal’s excretory strategy directly affects its water balance.
Nitrogenous wastes are some of the most significant forms of animal waste. Nitrogen is released when proteins and nucleic acids are broken down for energy or conversion into carbohydrates and fats. Proteins are broken down into amino acids and nucleic acids into nitrogenous...