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Biofuel, Industrial Uses - Coggle Diagram
Biofuel
Manufactauring
Feedstock Collection
Harvest crops or collect waste oils, fats and biomass
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Conversion
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Biodiesel - Transesterification (reacting oils/fats with alcohol & catalyst to produce biodiesel and glycerin
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Quality and type of feedstock determine the efficiency, yield, and emissions of manufacturing
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How can the product be more sustainable and reduce its environmental impact?
- Use renewable energy in factories, however renewable-powered factories may depend on an unreliable energy grid, affecting consistency
- Improve sustainable farming techniques
Raw Materials Extraction
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Land Use
Deforestation and land clearing
- Forests are often cleared to grow biofuel crops like palm oil.
- Results in habitat loss, reduced biodiversity, and increased CO₂ emissions.
Monoculture Farming
- Continuous planting of the same crop (e.g., corn) depletes soil nutrients.
- Reduces resilience to pests and climate stress.
Soil degradation
- Over-farming leads to erosion, compaction, and nutrient loss.
- Makes future cultivation harder without heavy input use.
Water Usage
Irrigation demands
- Crops like sugarcane and corn require large volumes of freshwater.
- Competes with water use for food and domestic needs.
Runoff pollution
- Excess fertilizers and pesticides wash into nearby rivers and lakes.
- Can cause eutrophication—algal blooms that harm aquatic life.
Groundwater depletion:
- Unsustainable water extraction for crop irrigation may lower water tables.
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Chemical inputs
Fertilizers (nitrogen, phosphorus, potassium):
- Boost crop yield but produce N₂O (a potent greenhouse gas).
- Residual chemicals may pollute groundwater and surface water.
Pesticides and herbicides:
- Used to manage pests and weeds in large-scale plantations.
- Toxic to non-target species and can accumulate in the food chain.
Long-term impacts:
- Overuse of agrochemicals can lead to soil acidification and reduced fertility, making land less productive over time.
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How can the product be more sustainable and reduce its environmental impact?
- Prioritize non-food, low-impact feedstocks, however using algae or waste feedstocks may require more water, nutrients or infrastructure than expected
- Improve sustainable farming techniques, however diverting agricultural residues could hurt soil fertility
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Usage
Environmental Impacts
Can be made from waste (e.g., used cooking oil, manure, crop residue).
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Industrial Uses
In factories and plants, biofuels are used to generate heat or as a process fuel in boilers and furnaces.
An alternative to fossil fuels for powering various engines, vehicles, and systems — with the goal of reducing greenhouse gas emissions and relying on renewable sources.
Domestic
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Examples: using biogas, wood pellets, or bio-oil in generators or combined heat and power (CHP) systems.
The biofuel's quality affects engine performance, emissions, and maintenance needs
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Higher use increases demand for crops or waste oils, possibly intensifying land and water use
Vehicle
Transportation Fuel
Biodiesel (from vegetable oils, animals fats)
-Used in diesel engines, either pure or blended (eg. B20 = 20% biodiesel + 80% diesel)
Bioethanol (from corn, sugarcane)
-Used in petrol engines, often blended with gasoline
Aviation
Sustainable Aviation Fuel (SAF) made from bio-based materials is used to replace or supplement jet fuel
How can the product be more sustainable and reduce its environmental impact?
- Blend biofuels with conventional fuels to reduce demand and emissions while maintaining performance, however high biofuel blends might damage older engines or increase maintenance needs
- Improve engine technology to work efficiently with biofuels, however "green" fuels could create a false sense of unlimited sustainability, encouraging overconsumption
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