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Related Concept Videos

Biofuels01:25

Biofuels

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...
Green Algae01:21

Green Algae

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...
Microbial Bioremediation of Hydrocarbons01:26

Microbial Bioremediation of Hydrocarbons

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 physical or...
Overview of Algae01:28

Overview of Algae

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...
Other Algae01:19

Other Algae

The group Stramenopiles include some phototrophic microorganisms. Members of this group possess flagella covered in numerous short, hairlike extensions, a feature that inspired the group's name, derived from the Latin words for "straw" and "hair." Some of the main categories of Stramenopiles include diatoms, golden algae, and brown algae.Diatoms are unicellular, photosynthetic eukaryotes, with over 200 known genera. They play a key role in the planktonic communities of both marine and...

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Quantification of Heavy Metals and Other Inorganic Contaminants on the Productivity of Microalgae
10:20

Quantification of Heavy Metals and Other Inorganic Contaminants on the Productivity of Microalgae

Published on: July 10, 2015

Algae biodiesel - a feasibility report.

Yihe Gao1, Chapin Gregor, Yuanjie Liang

  • 1University of Chicago, Chicago, 60637, USA. ymliang@uchicago.edu.

Chemistry Central Journal
|May 1, 2012
PubMed
Summary
This summary is machine-generated.

Algae biofuels can be produced economically with current subsidies, especially under optimized conditions. Cost per gallon estimates show potential for significant reductions in both closed and open systems.

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Area of Science:

  • Biotechnology
  • Renewable Energy

Background:

  • Algae biofuels have been a subject of extensive research since the 1970s, including government-funded programs and private initiatives.
  • Previous studies and programs highlight the long-standing interest in algae as a sustainable energy source.

Purpose of the Study:

  • To estimate the capital and operating costs for algae biofuel production in both closed and open systems.
  • To determine the economic viability of algae-derived biodiesel under various cost scenarios.

Main Methods:

  • Utilized figures from Molina Grima (2003) and the Department of Energy for cost estimations.
  • Developed conservative and contingency scenarios to model cost per gallon for closed and open pond systems.
  • Assessed the impact of yield improvements, capital cost reductions, and CO2 pricing on final biofuel cost.

Main Results:

  • Conservative cost estimates for algae biofuels were $1,292.05/gallon (closed systems) and $114.94/gallon (open systems).
  • Contingency scenarios projected significantly lower costs: $17.54/gallon (closed) and $1.94/gallon (open) under favorable conditions.
  • Key factors influencing cost reduction include increased yield, decreased capital expenditure, and effective CO2 utilization.

Conclusions:

  • Economic production of algae biodiesel is achievable under specific, favorable modeling conditions.
  • Current government subsidies play a crucial role in making algae biodiesel economically competitive.