Crop residues: Difference between revisions
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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 {{talk}}. | 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 {{talk}}. | ||
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==Supply== | ==Supply== | ||
{{dp | |||
|crop_residues | |||
|1.7 billion tonnes/year | |||
|Dry mass of all crop residues, byproducts, and oilseed cakes except for soybean | |||
|This should be, in principle, all the human-'''inedible''' parts of food crops (inedible due to being too fibrous; ruminants can digest the fiber and get calories from it).<br />Soybean meal is '''not''' counted here, because it '''can''' be turned into human food (soy flour). | |||
Source: | |||
<br />Breewood, H. & Garnett, T. (2020). What is feed-food competition? (Foodsource: building blocks). Food Climate Research Network, University of Oxford. | |||
<br />Page 10 | |||
<br />References primary source: | |||
<br />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. | |||
}} | |||
{{dp | |||
|world.population | |||
|8 billion | |||
}} | |||
{{dp | |||
|kalorie | |||
|kcal | |||
|A food calorie | |||
}} | |||
{{dp | |||
|fiber.energy_by_mass | |||
|4 kalorie/gram | |||
}} | |||
{{calc | |||
|crop_residues / world.population | |||
|grams/day per capita | |||
|dry_mass | |||
}} | |||
{{calc | |||
|dry_mass * fiber.energy_by_mass | |||
|watts per capita | |||
}} | |||
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How much biomass waste is produced ''per capita'' worldwide? Here are some ways to visualize it: | How much biomass waste is produced ''per capita'' worldwide? Here are some ways to visualize it: | ||
_ grams/day (fiber dry mass) | _ grams/day (fiber dry mass) | ||
Revision as of 18:03, 18 March 2023
Biomass waste refers to the parts of food crops that humans can't eat. This material is mostly fibre (cellulose).
Examples:
- banana leaves
- peanut shells
- coconut shells
- empty corn cobs with no kernels.
- straw
Abundance:
- Production is roughly equal to food production, because about half of the average food crop is biomass waste (the other half is food).
- This page needs more precise numbers.
Uses:
- 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.