Q. What occurs in the hydrolysis step of anaerobic digestion?

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Q. Which of the following best indicates the steps inside an anaerobic digester?

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Q. Which of the following best indicates the steps of anaerobic digestion?

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Q. Which of the following is used to produce biogas from biomass?

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Q. Which among the following is the best source for methane production?

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Q. What are the categories for organic dry matter on the basis of total solids (TS)?

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Q. Which of the following is a preferred substrate for biogas production? Note that TS stands for total solids.

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Q. Which of the following is a substrate for biogas production?

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Q. Ash sticks to the side in a cross-draft gasifier.

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Q. How does air enter and exit in a cross-draft gasifier?

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Q. Which of the following are keys to design a gasifier?

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Q. Which of the following applications can the producer gas be used for?

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Q. Which of the following applications is the product gas from downdraft gasifier suitable for?

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Q. The tar content of the product gas in downdraft gasifier is _______ updraft gasifier.

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Q. How is the biomass material and gasification agent fed into a downdraft gasifier?

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Q. The product gas removed from the low temperature zone undergoes _______ before being used as fuel in combustion for electricity generator.

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Q. What is the contaminant in the product gas that is withdrawn from a low temperature zone in a fixed bed gasifier?

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Q. How is the biomass material and gasification agent fed into an updraft gasifier?

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Q. Biomass is moved at a very slow rate in fixed bed gasifier.

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Q. What are the three main types of gasifiers?

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