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Examoogle • User • info@examoogle.com • EE-2024-8821
Chapter 1 of 12 • Page 1 of 248🔒 Protected PDF • Watermarked
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Biomass is useful to produce
Chemicals
Fibres
Biochemicals
Transportation fuels
Transportation fuels
Quick Summary: Biomass refers to organic matter derived from plants and animals, which serves as a renewable energy feedstock. It is primarily utilized in modern engineering to produce high-density liquid transportation fuels such as ethanol, biodiesel, and bio-jet fuel, which are essential for reducing reliance on fossil fuels.
Biomass refers to organic matter derived from plants and animals, which serves as a renewable energy feedstock. It is primarily utilized in modern engineering to produce high-density liquid transportation fuels such as ethanol, biodiesel, and bio-jet fuel, which are essential for reducing reliance on fossil fuels.
C6H12O6→2C2H5OH+2CO2 — Ethanol fermentation reaction
1 kg Biomass≈15−20 MJ energy — Typical calorific value estimation
Biomass energy conversion utilizes biological (fermentation/anaerobic digestion) or thermochemical (pyrolysis/gasification) processes. For transportation fuels, lignocellulosic biomass is broken down into simple sugars via hydrolysis and subsequently fermented into alcohols, or oils from oilseed crops are transesterified to form biodiesel.
Biomass is categorized as carbon-neutral because the CO2 released during combustion is absorbed by plants during growth.
Lignocellulosic feedstock is the most sustainable source as it does not compete with food supplies.
Transportation fuel production often follows the 'Biorefinery' model, similar to petroleum refineries.
Biodiesel is produced via the transesterification of triglycerides using an alcohol catalyst.
Reduces greenhouse gas emissions compared to petroleum.
Increases energy security and reduces oil import dependence.
Supports rural economies and waste management.
High logistical costs for biomass collection and storage.
Conversion efficiency can be low due to high moisture content.
Potential impact on food prices if food crops are used as feedstock.
Aviation (Sustainable Aviation Fuel - SAF).
Heavy road transport and freight.
Industrial thermal heating.
While biomass can produce chemicals and biochemicals, 'Transportation Fuels' is the primary strategic goal for large-scale energy infrastructure.
Option C (Biochemicals) is technically correct but less prioritized in the context of power generation and energy sector energy mix studies.
D is correct — Biomass is extensively processed to derive high-energy-density transportation fuels like ethanol and biodiesel to replace conventional hydrocarbon-based fuels.
Always remember that in the context of electrical power generation and energy policy, biomass is prioritized for its ability to provide dispatchable baseload power or substitute for liquid transportation fuels.