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With reference to energy derivation processes of ‘incineration’ and ‘pyrolysis’, consider the following statements:
- Incineration is a thermal process, while pyrolysis is not.
- Incineration requires oxygen, while pyrolysis occurs without oxygen in an inert atmosphere.
Which of the statements given above is/are correct?
- a)1 only
- b)2 only
- c)Both 1 and 2
- d)Neither 1 nor 2
Correct answer is option 'B'. Can you explain this answer?
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Most Upvoted Answer
With reference to energy derivation processes of ‘incineration&r...
Pyrolysis vs Incineration
Incineration:
- Incineration is a thermal process.
- It requires oxygen for combustion.
- During incineration, waste materials are burned at high temperatures, converting them into ash, flue gas, and heat.
Pyrolysis:
- Pyrolysis is also a thermal process, but it occurs in the absence of oxygen or in an inert atmosphere.
- In pyrolysis, organic materials are heated in a controlled environment to break them down into smaller molecules, producing bio-oil, biochar, and syngas.
Correct Answer:
- The second statement is correct as pyrolysis indeed occurs without oxygen in an inert atmosphere.
- Therefore, the correct answer is option 'B' - 2 only.
Incineration:
- Incineration is a thermal process.
- It requires oxygen for combustion.
- During incineration, waste materials are burned at high temperatures, converting them into ash, flue gas, and heat.
Pyrolysis:
- Pyrolysis is also a thermal process, but it occurs in the absence of oxygen or in an inert atmosphere.
- In pyrolysis, organic materials are heated in a controlled environment to break them down into smaller molecules, producing bio-oil, biochar, and syngas.
Correct Answer:
- The second statement is correct as pyrolysis indeed occurs without oxygen in an inert atmosphere.
- Therefore, the correct answer is option 'B' - 2 only.
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Community Answer
With reference to energy derivation processes of ‘incineration&r...
- Incineration is the process of burning hazardous materials at high temperatures (in the presence of oxygen) to destroy contaminants. It is a thermal process conducted in an “incinerator” (a type of furnace designed for burning hazardous materials in a combustion chamber).
- Pyrolysis is the heating of an organic material, such as biomass, in the absence of oxygen. It is also a thermal process utilized to convert biomass into an intermediate liquid product that can be refined into drop-in hydrocarbon biofuels, oxygenated fuel additives, and petrochemical replacements.
Hence, statement 1 is not correct and statement 2 is correct. - Temperature: Incineration requires very high temperatures above 850 to 1000°C. In pyrolysis, the process occurs at lower temperatures from 400 to 1000°C.
- Residues: Incineration produces significant amounts of ash as a residue, which is waste and has to be landfilled. The ash is contaminated by toxic pollutants that will pollute the soil. In contrast, the solids produced through pyrolysis are high-value products like char.
- Energy Recovery: Incineration produces energy in the form of electricity or heat generation. Pyrolysis produces transportable and storable biofuels like syngas and tire pyrolysis oil, which can be used as fuel for combustion for industrial purposes and as a partial substitute for diesel.
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With reference to energy derivation processes of ‘incineration’ and ‘pyrolysis’, consider the following statements: Incineration is a thermal process, while pyrolysis is not. Incineration requires oxygen, while pyrolysis occurs without oxygen in an inert atmosphere.Which of the statements given above is/are correct?a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2 Correct answer is option 'B'. Can you explain this answer?
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