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Archive:000/Crop residues: Difference between revisions
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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.''' | 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.''' | ||
__NOTOC__ | |||
==Examples== | |||
* banana leaves | * banana leaves & peels | ||
* peanut shells | * peanut shells | ||
* coconut shells | * coconut shells | ||
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* sunflower seed husks | * sunflower seed husks | ||
* [[straw]] | * [[straw]] | ||
==Uses== | |||
# All biomass waste can be burned for [[energy]]. | # 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 converted into [[packaging]]. | ||
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# If there's no other use, biomass waste can be composted back into the soil. | # 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 {{ | 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 {{tp2}}. | ||
==Supply== | ==Supply== | ||
{{sum|Major limitation|bad}} | |||
'''Global [[fossil fuel]] consumption far exceeds what can be produced by crops.''' | |||
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Production is roughly equal to food production, because about half of the average food crop is biomass waste (the other half is food). | |||
--> | |||
===Mass=== | ===Mass=== | ||
{{dp | {{dp | ||
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|How much of the fuel combustion heat becomes electricity | |How much of the fuel combustion heat becomes electricity | ||
|This applies to any power plant that runs on biomass, coal, nuclear fission, or in some cases natural gas. The fuel heats water which generates steam to drive a turbine that generates electricity. | |This applies to any power plant that runs on biomass, coal, nuclear fission, or in some cases natural gas. The fuel heats water which generates steam to drive a turbine that generates electricity. | ||
}} | |||
{{dp | |||
|fossil_fuels | |||
|11596.92 Mtoe/year | |||
|Total consumption of coal, oil, and natural gas (worldwide) | |||
|Key World Energy Statistics 2020 (IEA report)<br /> | |||
- page 47: World energy balance, 2018<br /> | |||
- - Total Energy Supply (TES), first 4 columns combined | |||
}} | }} | ||
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|dry_mass * fiber.energy_by_mass * power_plant.efficiency | |dry_mass * fiber.energy_by_mass * power_plant.efficiency | ||
|watts per capita | |watts per capita | ||
}} | |||
Compared to fossil fuel consumption (status quo): | |||
{{calc | |||
|crop_residues * fiber.energy_by_mass | |||
|% fossil_fuels | |||
}} | }} | ||