Oilgae Club - an Online Community for Algae Fuel Enthusiasts Worldwide.

High Efficiency Micro algae research 4

The use of fossil fuels is now widely accepted as unsustainable due to depleting resources and the accumulation of greenhouse gases in the environment that have already exceeded the dangerously high threshold of 450 ppm CO2-e. To achieve environmental and economic sustainability, fuel production processes are required that are not only renewable, but also capable of sequestering atmospheric CO2.

Currently, nearly all renewable energy sources (e.g. hydroelectric, solar, wind, tidal, geothermal) target the electricity market, while fuels make up a much larger share of the global energy demand (∼66%).

Biofuels are therefore rapidly being developed.
Second generation microalgal systems have the advantage that they can produce a wide range of feedstocks for the production of biodiesel, bioethanol, biomethane and biohydrogen. Biodiesel is currently produced from oil synthesized by conventional fuel crops that harvest the sun's energy and store it as chemical energy. This presents a route for renewable and carbon-neutral fuel production. However, current supplies from oil crops and animal fats account for only approximately 0.3% of the current demand for transport fuels. Increasing biofuel production on arable land could have severe consequences for global food supply.

In contrast, producing biodiesel from algae is widely regarded as one of the most efficient ways of generating biofuels and also appears to represent the only current renewable source of oil that could meet the global demand for transport fuels. The main advantages of second generation microalgal systems are that they:

(1) Have a higher photon conversion efficiency (as evidenced by increased biomass yields per hectare)
(2) Can be harvested batch-wise nearly all-year-round, providing a reliable and continuous supply of oil
(3) Can utilize salt and waste water streams, thereby greatly reducing freshwater use
(4) Can couple CO2-neutral fuel production with CO2 sequestration
(5) Produce non-toxic and highly biodegradable biofuels. Current limitations exist mainly in the harvesting process and in the supply of CO2 for high efficiency production.
Wed March 31 2010 04:30:53 AM by Rumana Biofuel  |  micro algae  |  Carbon sequestration 2138 views

Comments - 4

  • Tue March 30 2010 02:46:38 PM

    point 2. states that year around .is it possible in winter season?
    could you think about the production cost of production which is equal to 1$ in india?

    Vote Up! 1 Vote Down! 0

  • Tue March 30 2010 02:48:20 PM

    can we make it fuel only with chlorophyceae or other like basiliriophyceae ?

    Vote Up! 1 Vote Down! 0

  • Rumana wrote:
    Thu April 01 2010 08:50:20 AM

    Yes the production is possible during the winter season.

    During winter season, due to lack of sunlight there is less photosynthesis and less production.This is a problem when algae is harvested under natural conditions.
    To overcome it, there are photobioreactors that contains closed chambers to support algae growth.
    1.) The chamber optimizes illumination levels for five times the surface level exposure to sunlight than open ponds.
    2.)In addition, the technology circulates algae within the chamber using controlled turbulence in order to maximize the photosynthesis and algae growth.

    Vote Up! 1 Vote Down! 0

  • RaviPrasad wrote:
    Fri April 09 2010 05:20:26 PM

    I have one question from above blog that we can cultivate algae in waste water . What is the meaning of waste water? If we are cultivating algae in water coming out of factory or industry or any place i think it will cause eutrofication which is a kind of water pollution and now a days we are very much concerned about water pollution . so this will not cause water pollution ? One of the alarming problem present world.

    Vote Up! 1 Vote Down! 0

Login to Post a Comment