How to Calculate the Biogas Volume of an Anaerobic Digester?

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In summary, the volume of biogas produced by an anaerobic digester is dependent on various factors such as the type of biomass being fed, environmental conditions, and biochemical processes involved. For specific calculations, it is recommended to consult peer-reviewed literature or experts in the field. Additionally, there are volumetric biogas yield values available for various organic matters that can be found through online research.
  • #1
A87
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Hey guys

Does anyone know how to calculate the biogas volume of an anaerobic digester depending on the type of biomass fed in.

Are there any good sources on this specific question?

Thanks
 
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  • #2
A87 said:
Hey guys

Does anyone know how to calculate the biogas volume of an anaerobic digester depending on the type of biomass fed in.

Are there any good sources on this specific question?

Thanks

I think this would be heavily dependent on what organism you are using, what biomass you are feeding it, what the environmental conditions are and ultimately what biochemical processes occur.
 
  • #3
Hi

Using the miscanthus energy crop as a biomass with thermophilic conditions. External environmental conditions at average UK. Just to get an idea of the process behind this calculation and what equations/models are used.

Thanks
 
  • #4
A87 said:
Hi

Using the miscanthus energy crop as a biomass with thermophilic conditions. External environmental conditions at average UK. Just to get an idea of the process behind this calculation and what equations/models are used.

Thanks

I'm not an expert in this field but I do not see how one could answer the question without a far greater knowledge of the processes involved. You would have to know what processes the bacteria use to make the gas. For example;

If the vegetation contained chemical X2Y1 which was broken down in this process,

X2Y1 + A2 --> X2 + Y1A2

Where X2 is the biogas then you could estimate how much gas you would get by knowing how much X2Y1 is in the vegetation and knowing how long it would take the bacteria to break it down. I think the best bet for you to find your answer is to search for peer-reviewed literature on the specific biogas you are looking for or email experts in the field directly.
 
  • #5
Organic matters like maize silage, grass silage, cow dung etc have their volumetric biogas yield per kg of organic matters. You can find them by googling sth like "biogas pdf"
 

Related to How to Calculate the Biogas Volume of an Anaerobic Digester?

1. What is anaerobic digestion biomass?

Anaerobic digestion biomass is a process by which organic materials, such as food waste, manure, and sewage, are broken down by microorganisms in the absence of oxygen. This results in the production of biogas, a mixture of methane and carbon dioxide, and a nutrient-rich byproduct called digestate.

2. How does anaerobic digestion biomass work?

In anaerobic digestion, microorganisms break down the organic materials through a series of biochemical reactions. The process occurs in four stages: hydrolysis, acidogenesis, acetogenesis, and methanogenesis. Each stage is carried out by different groups of microorganisms, resulting in the production of biogas.

3. What are the benefits of anaerobic digestion biomass?

There are several benefits of anaerobic digestion biomass, including the production of renewable energy in the form of biogas, reduction of greenhouse gas emissions from organic waste, and the production of a nutrient-rich fertilizer. It also helps to divert organic waste from landfills, reducing the environmental impact of waste disposal.

4. What types of organic materials can be used in anaerobic digestion biomass?

Virtually any organic material can be used in anaerobic digestion biomass, including food waste, animal manure, sewage sludge, and agricultural residues. However, some materials may require pre-treatment to optimize their digestion and biogas production.

5. What are the challenges of anaerobic digestion biomass?

Some of the challenges of anaerobic digestion biomass include the high initial investment costs, the need for specialized equipment and expertise, and the variability of feedstock and environmental conditions, which can affect the efficiency and stability of the process. Proper management and monitoring are essential to ensure the success of anaerobic digestion biomass systems.

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