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Bioconversion of Organic Materials Quiz

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Questions and Answers

What is the main purpose of grub composting?

To convert organic waste into high quality feedstuff and oil rich material (correct)

To clean up the environment by using waste as a substrate

To lower the release of atmospheric hydrocarbon pollutants

To produce biofuels like ethanol and methane

Which microorganism is responsible for producing methane as a biofuel?

Saccharomyces

Clostridium

Zymomonas

Methanobacterium (correct)

What is the desirable feature of biofuels mentioned in the text?

Derived from non-renewable sources

Low cost and easily available (correct)

Produced from non-organic matter

High cost and limited availability

What is the primary microorganism responsible for producing bioethanol?

Zymomonas Signup and view all the answers

How does ethanol (gasohol) contribute to reducing pollution?

By being an efficient fuel and lowering atmospheric hydrocarbon pollutants Signup and view all the answers

'Gasohol' refers to a mixture of which two substances?

Gasoline and ethanol Signup and view all the answers

What is a potential disadvantage of over-production of biogas in nature?

Increased air pollution Signup and view all the answers

Why are biofuels considered cost-efficient compared to standard diesel?

Their overall cost-benefit is high Signup and view all the answers

What is a key advantage of biofuels in terms of engine performance?

They are adaptable to current engine designs Signup and view all the answers

What is a common source for the production of biofuels?

Manure from animals Signup and view all the answers

Why are biofuels considered cleaner fuels?

Because they produce fewer emissions on burning Signup and view all the answers

What makes the use of biofuels efficient in nature?

The renewable sources like manure and plants used for their production Signup and view all the answers

What is the main focus of bioconversion?

Converting organic materials into usable products or energy sources Signup and view all the answers

Which process involves the conversion of a source of feedstock into sugars for fermentation into ethanol?

Enzymatic hydrolysis Signup and view all the answers

What is the composition of syngas after gasification in the synthesis gas fermentation process?

Mostly carbon monoxide and hydrogen Signup and view all the answers

Which microorganism is used in the synthesis gas fermentation process to convert the syngas into ethanol?

Clostridium ljungdahlii Signup and view all the answers

What type of energy is co-generated using the heat generated by gasification in the synthesis gas fermentation process?

Excess electricity Signup and view all the answers

What is the purpose of exposure to bacteria or catalysts after cooling the syngas in the synthesis gas fermentation process?

To convert syngas into usable products Signup and view all the answers