Nearly every food crop has some parts that are too fibrous for people to eat. These are called crop residues, also known as biomass waste.
- banana leaves
- peanut shells
- coconut shells
- empty corn cobs with no kernels
- rice husks
- sunflower seed husks
- All biomass waste can be burned for energy.
- Some kinds of biomass waste can be converted into packaging.
- Some kinds of biomass waste can be fed to ruminants (cows).
- Some kinds of biomass waste can be used for cultivating mushrooms.
- If there's no other use, biomass waste can be composted back into the soil.
3 and 4 are both ways to convert fiber into human-edible protein & calories. Help figure out which of these processes is more efficient overall. This page doesn't have enough information yet - join the discussion.
Global fossil fuel consumption far exceeds what can be produced by crops.
Soybean meal is not counted here, because it can be turned into human food (soy flour).
Breewood, H. & Garnett, T. (2020). What is feed-food competition? (Foodsource: building blocks). Food Climate Research Network, University of Oxford.
References primary source:
Mottet, A., de Haan, C., Falcucci, A., Tempio, G., Opio, C., & Gerber, P. (2017). Livestock: On our plates or eating at our table? A new analysis of the feed/food debate. Global Food Security.
How much does the world produce: (calculation loading)
If this could be converted into packaging, it would probably be more than enough to replace all disposable plastic.
If all of it was burned for energy, it would be equivalent to burning: (calculation loading)
If it was burned in a power plant, the electricity generated would be: (calculation loading)
Biomass energy is nowhere near enough to power the world.
Other energy sources: