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Related Concept Videos

Biofuels01:25

Biofuels

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The microbial conversion of organic matter into biofuels holds potential as a renewable energy source. Among biofuel sources, microalgae are recognized as a highly efficient and adaptable feedstock for biodiesel production, owing to their rapid biomass accumulation, elevated lipid productivity, and capacity to proliferate in diverse aquatic systems, including freshwater, marine, and wastewater habitats. Unlike terrestrial crops, microalgae do not compete for land and can achieve significantly...
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Green algae, also referred to as chlorophytes, are different from red algae in having the chloroplasts containing chlorophylls a and b, which give them their distinct green hue. However, they lack phycobiliproteins, preventing them from developing the red or blue-green pigmentation seen in red algae. In terms of photosynthetic pigment composition, green algae closely resemble plants and share a close evolutionary relationship with them. Taxonomically Green algae belong to Phylum Chlorophyta in...
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Bioremediation is an environmentally sustainable process that employs living organisms—primarily microorganisms—to degrade or neutralize pollutants from contaminated environments. In oil spills and hydrocarbon pollution, bioremediation involves the use of hydrocarbon-degrading bacteria to transform toxic compounds into less harmful substances. This approach leverages natural microbial metabolic processes and is considered both cost-effective and ecologically favorable compared to...
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The kingdom Archaeplastida encompasses red and green algae, along with land plants. Unlike other protists with chloroplasts that arose through secondary endosymbiosis, only red and green algae originated from primary endosymbiotic events. This diverse group of eukaryotic organisms contains chlorophyll and performs oxygenic photosynthesis.Algae exist in various forms, from large brown kelp in coastal waters to green scum in puddles and stains on rocks or soil. Some species are responsible for...
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Quantification of Heavy Metals and Other Inorganic Contaminants on the Productivity of Microalgae
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Global evaluation of biofuel potential from microalgae.

Jeffrey W Moody1, Christopher M McGinty2, Jason C Quinn3

  • 1Mechanical and Aerospace Engineering and.

Proceedings of the National Academy of Sciences of the United States of America
|June 10, 2014
PubMed
Summary

This study introduces a validated microalgae growth model for biofuel production, revealing high lipid yields in specific global regions. The findings suggest microalgae biofuels can significantly contribute to transportation fuel needs without land constraints.

Keywords:
algaedynamic mapgeographic information systemglobal modellife cycle assessment

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Area of Science:

  • Biotechnology
  • Renewable Energy
  • Environmental Science

Background:

  • Current microalgae biofuel assessments use limited lab data, causing uncertainty.
  • Existing models overestimate productivity and ignore crucial factors like location and cultivation design.

Purpose of the Study:

  • To develop and validate a large-scale outdoor photobioreactor model for microalgae growth.
  • To assess global microalgae lipid and biomass productivity for biofuel potential.
  • To evaluate the scalability of microalgae-based biofuels.

Main Methods:

  • Utilized a validated model with 21 inputs, including biological effects and hourly weather data.
  • Simulated annual growth for Nannochloropsis at 4,388 global locations.
  • Integrated productivity data with fuel consumption and land availability for scalability assessment.

Main Results:

  • Generated global productivity maps for microalgae lipid and biomass.
  • Identified optimal regions for high yields (e.g., Australia, India, Saudi Arabia).
  • Demonstrated significant potential for microalgae biofuels to meet transportation fuel demands.

Conclusions:

  • The validated model provides accurate global productivity estimates.
  • Microalgae biofuels show strong potential compared to terrestrial feedstocks.
  • Production can meet substantial fuel needs without land limitations under optimal conditions.