Pyrolysis

1. What is the primary difference between pyrolysis and combustion?

• 1. Pyrolysis occurs in the presence of oxygen, while combustion occurs in the absence of oxygen.

• Pyrolysis occurs in the absence of oxygen, while combustion occurs in the presence of oxygen.

• 1. Both processes occur in the presence of oxygen.

• 1. Both processes occur in the absence of oxygen.

1. Which of the following is NOT a typical product of pyrolysis?

• 1. Biochar

• 1. Bio-oil

• Syngas

• Methane

1. What type of feedstock can be used in the pyrolysis process?

• Biomass

• 1. Plastic waste

• 1. Tires

• 1. All of the above

1. Which parameter most significantly affects the yield of biochar in pyrolysis?

• 1. Temperature

• 1. Pressure

• Heating rate

• 1. Feedstock particle size

1. What is the primary chemical mechanism involved in pyrolysis?

• Oxidation

• 1. Polymerization

• Thermal decomposition

• Hydration

1. In fast pyrolysis, the heating rate is typically:

• 1. Less than 1 °C/s

• 1. 10-100 °C/s

• 1. 100-1000 °C/s

• 1. Greater than 1000 °C/s

1. Which of the following best describes the role of residence time in pyrolysis?

• 1. It determines the amount of feedstock that can be processed.

• 1. It influences the proportion of different pyrolysis products.

• 1. It affects the color of the bio-oil produced.

• 1. It controls the moisture content in the feedstock.

1. Bio-oil produced from pyrolysis is primarily used for:

• 1. Fertilizer

• Fuel and chemical feedstock

• Plastic production

• Construction material

1. Which of the following is an environmental benefit of pyrolysis?

• Increased greenhouse gas emissions

• 1. Reduction of waste volume

• 1. Increased energy consumption

• 1. Production of hazardous by-products

1. Pyrolysis can contribute to the circular economy by:

• 1. Disposing of waste in landfills

• 1. Producing non-recyclable by-products

• Transforming waste into valuable products

• 1. Requiring high amounts of non-renewable energy