Biogas is produced by anaerobic breakdown of biomass of agricultural waste by methanogenic bacteria. It is a:

Options

A. One step process
B. Two step process
C. Three step process
D. Multi tep process

Answer

**Step-by-Step Solution:**

1. **Understanding Biogas Production**: Biogas is produced through the anaerobic breakdown of organic materials, specifically agricultural waste, by methanogenic bacteria. This process occurs in the absence of oxygen.

2. **Identifying the Steps of Biogas Production**: The production of biogas involves multiple steps. It is essential to break down the process into its individual components to understand how biogas is formed.

3. **Step 1 - Hydrolysis**: In the first step, hydrolysis occurs where complex organic materials (like cellulose and starch) are broken down into simpler molecules (like sugars and amino acids) by the action of water and enzymes.

4. **Step 2 - Acidification**: The second step is acidification, where the simpler molecules produced in hydrolysis are further fermented by bacteria to produce organic acids, carbon dioxide, and hydrogen.

5. **Step 3 - Acetation**: Following acidification, the third step is acetation. Here, the organic acids are converted into acetic acid, along with additional carbon dioxide and hydrogen gas.

6. **Step 4 - Methanogenesis**: The final step is methanogenesis, where methanogenic bacteria convert the acetic acid and hydrogen produced in the previous steps into methane (the primary component of biogas) and carbon dioxide.

7. **Conclusion**: Since the entire process of biogas production consists of four distinct steps (hydrolysis, acidification, acetation, and methanogenesis), it is classified as a multi-step process.

**Final Answer**: Biogas production is a multi-step process.

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