The correct sequence in biogas production is

Options

A. Acidogenesis `rarr` Solublisation `rarr` Methanogenesis
B. Solublisation `rarr` Acidogenesis `rarr` Methanogenesis
C. Methanogenesis `rarr` Solublisation `rarr` Acidogenesis
D. Acidogenesis `rarr` Methanogenesis `rarr` Solublisation

Answer

To determine the correct sequence in biogas production, we need to understand the steps involved in the anaerobic digestion process. Here’s a step-by-step breakdown of the process:

### Step 1: Solubilization (Hydrolysis)
- **Explanation**: The first step in biogas production is solubilization, also known as hydrolysis. In this step, complex organic polymers present in biomass (like carbohydrates, proteins, and fats) are broken down into simpler compounds such as sugars, amino acids, and fatty acids. This breakdown is essential as it converts the large organic molecules into smaller, more manageable ones that can be further processed by microorganisms.

### Step 2: Acidogenesis
- **Explanation**: The second step is acidogenesis. During this phase, the simpler compounds produced in the first step are further fermented by acidogenic bacteria. This process leads to the production of volatile fatty acids, ammonia, carbon dioxide, and hydrogen sulfide. Acidogenesis is crucial as it continues the breakdown of organic material into even simpler molecules.

### Step 3: Methanogenesis
- **Explanation**: The final step is methanogenesis. In this stage, methanogenic bacteria act on the products of acidogenesis to produce methane and carbon dioxide. This step is vital as it generates the biogas that is primarily composed of methane, which is the desired product for energy use.

### Conclusion
The correct sequence in biogas production is:
1. Solubilization (Hydrolysis)
2. Acidogenesis
3. Methanogenesis

Thus, the correct answer to the question is **Option B: Solubilization → Acidogenesis → Methanogenesis**.

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