Microalgae Energy Production Concepts

In a French lab, researchers are generating energy from waste water by cultivating microalga. The process involves collecting and diluting waste water to support microalga growth, which consumes pollutants. The microalga is then separated to produce oil and biomass, which can be used as fuel. Photobioreactors and electromagnets enhance energy efficiency. The system is carbon neutral and can meet 80% of a building's energy needs, while purifying water to rainwater quality.

What is the primary role of waste water in the energy production process described?

• It is used to cool down the reactors.

• It acts as a fertilizer for microalgae.

• It is converted directly into electricity.

• It is used to clean the photobioreactors.

How is the oil produced from microalgae used?

• As a cleaning agent

• As a fuel for energy production

• As a food supplement

• As a fertilizer

What technology is used to grow microalgae rapidly?

• Photobioreactors

• Solar panels

• Hydroelectric dams

• Wind turbines

What is the new method used to extract algae that consumes less energy?

• Centrifugal force

• Electromagnets

• Chemical solvents

• Manual filtration

What is the energy value of the fuel produced compared to traditional fuels?

• It is higher than coal.

• It is the same as natural gas.

• It is the same as coal.

• It is lower than coal.

What percentage of a building's energy needs can be met by this system?

• 50%

• 60%

• 70%

• 80%

What is the environmental impact of the system described?

• It is carbon neutral.

• It reduces water quality.

• It increases air pollution.

• It increases carbon emissions.

What is the quality of the water at the end of the process?

• It is polluted.

• It is undrinkable.

• It is the same as tap water.

• It is the same quality as rainwater.