Question

Which fuels are obtained from biomass?

Hint:

Biomass can be processed into solid, liquid, or gaseous biofuels, offering renewable energy options that help reduce fossil fuel use. Whether it's firewood for heating, bioethanol from sugar crops, or biogas from organic waste, these biofuels can contribute to sustainability and lower greenhouse gas emissions when managed responsibly!

Answer 1

Biomass yields different types of fuels depending on processing:
Solid biofuels: Firewood, charcoal, crop residues, dung cakes and wood pellets used directly for heating and cooking.
Liquid biofuels: Bioethanol produced by fermentation of sugars (e.g., from sugarcane, corn); biodiesel produced from vegetable oils or animal fats by transesterification; straight vegetable oils used in some engines.
Gaseous biofuels: Biogas (mainly methane and CO2) produced by anaerobic digestion of organic wastes; producer gas or syngas from gasification of biomass.
These biofuels are renewable and can reduce dependence on fossil fuels and lower net greenhouse gas emissions when produced sustainably.