Temperature suitable for biogas production is

Options

A. `36^(@)-38^(@) C`
B. `20^(@)-25^(@) C`
C. `30^(@)-35^(@) C`
D. `40^(@)-44^(@) C`

Answer

To determine the suitable temperature for biogas production, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Biogas Production**: Biogas is produced through the anaerobic digestion of organic matter by bacteria. This process occurs in specially designed large tanks known as digesters.

2. **Types of Bacteria Involved**: There are two main types of bacteria involved in biogas production:
- **Mesophilic Bacteria**: These bacteria thrive in moderate temperatures.
- **Thermophilic Bacteria**: These bacteria thrive in higher temperatures.

3. **Temperature Ranges**:
- **Mesophilic Bacteria**: They are active at an optimum temperature range of **35 to 40 degrees Celsius**.
- **Thermophilic Bacteria**: They prefer higher temperatures, typically around **50 to 55 degrees Celsius**.

4. **Analyzing the Options**:
- **Option 1**: 36 to 38 degrees Celsius (within the mesophilic range)
- **Option 2**: 20 to 25 degrees Celsius (too low for effective biogas production)
- **Option 3**: 30 to 35 degrees Celsius (lower end of mesophilic range)
- **Option 4**: 40 to 44 degrees Celsius (upper end of mesophilic range, close to thermophilic)

5. **Conclusion**: The optimal temperature for biogas production is generally considered to be within the range of **36 to 38 degrees Celsius**, which is suitable for mesophilic bacteria.

### Final Answer:
The temperature suitable for biogas production is **36 to 38 degrees Celsius**.

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