Life Cycle Assessment of Biodiesel Production Systems
Summary
Life cycle assessment (LCA) of biodiesel production systems offers a structured framework to quantify environmental burdens arising from feedstock cultivation through to end-use combustion. Typical feedstocks range from first-generation oils such as rapeseed, soybean and palm to second-generation and waste oils including microalgae and used cooking oil, each presenting unique trade-offs in land use, nutrient demand and processing energy. Core LCA stages encompass cultivation and harvesting, oil extraction, transesterification or hydrodeoxygenation, distribution and combustion, with metrics such as global warming potential, acidification, eutrophication and energy return on investment facilitating apples-to-apples comparisons. Sensitivity analyses reveal that feedstock yields, fertiliser regimes, glycerol coproduct handling and plant scale strongly influence net greenhouse gas savings. Environmental hotspots frequently emerge in the agricultural phase and in energy-intensive conversion steps, guiding priorities for technological optimisation and policy incentives. Integrating renewable electricity, improving process yields and substituting non-edible or waste feedstocks have been shown to enhance sustainability and support circular economy objectives. Globally, LCA findings inform regulatory frameworks, certification schemes and decarbonisation strategies by underpinning evidence-based decisions that balance climate mitigation, resource conservation and energy security.
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Life Cycle Assessment of Biodiesel Production Systems publication trend
The graph below shows the total number of articles in life cycle assessment of biodiesel production systems across all publications each year (not limited to Nature Index journals).
Technical terms
Life Cycle Assessment (LCA): A systematic methodology for evaluating the environmental impacts of a product or process throughout its entire life cycle.
Functional Unit: A quantified measure of a product system’s function used as a reference to which input and output data are normalised.
Global Warming Potential (GWP): An index expressing the cumulative radiative forcing impact of a greenhouse gas relative to carbon dioxide over a set time horizon.
Hydrotreated Vegetable Oil (HVO): A renewable diesel produced by hydrogenation and deoxygenation of vegetable oils or waste oils within a refinery process.
Environmental Hotspot: A life cycle stage or process that contributes disproportionately to the overall environmental impacts of a system.
References
- Life cycle GHG emission reduction of hydrotreated vegetable oil integration in an industrial petroleum refinery. Green Technologies and Sustainability (2024).
- The advances and limitations in biodiesel production: feedstocks, oil extraction methods, production, and environmental life cycle assessment. Green Chemistry Letters and Reviews (2020).
- Advancing Biodiesel Production System from Mixed Vegetable Oil Waste: A Life Cycle Assessment of Environmental and Economic Outcomes. Sustainability (2023).
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