Algal Biofuels

Advantages of algal biofuel

Algae can be grown in places other crops cannot be grown, such as in the sea or in tanks in the desert, so they don't need to compete with other crops that need to be grown on land, such as food crops. Algae can use waste water and waste gas as a source of nutrients.

Disadvantages

If large sealed tanks are used instead to create a controlled environment these are expensive. Harvesting algae is expensive in general. The production of algal bio-fuels is mostly at the experimental stage and it is likely to take 5-10 years to scale up production and lower costs.
I think they should start using algal bio-fuel because it help people stop having to use fossil fuels.