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Blogs under tag Macroalgae

Macroalgae to Fuels Posted by Parkavi on Fri April 16 2010 03:14:30 AM 34

Algae, a third generation biofuel feedstock, present one of the most attractive renewable fuel opportunities. Algae?s potential arises from their high biomass yields, ability to grow in a range of environments, and their effectiveness as a bioremediation agent for CO2 sequestration and waste water treatment. Studies suggest that algae are the only bio-feedstock that has the potential to completely replace world?s fossil transportation fuels. Consequently, there is a growing interest in using algae as a source of fuel.

Obtaining biodiesel from microalgae is the most commonly used route to produce fuel from algae. However, it has not yet been shown on a large scale that harvested microalgae can be economically and reliably transformed into fuel. The main reasons that currently inhibit sustainable, large-scale biofuel production from microalgae are the high costs of cultivation and harvesting. Using macroalgae as a feedstock, and using thermochemical processes to obtain liquid fuels could overcome the problems present in the microalgae-to-biodiesel process, thereby providing us with a highly scalable system of biofuel production at competitive costs.

Macroalgae are commonly known as seaweeds. The advantage with macroalgae is that they can be harvested easily unlike microalgae. There is no need for expensive cultivation systems as they can be easily grown in ocean environment.

These advantages make macroalgae an important feedstock for fuel in the near term.

Seaweed Fibres for Better Digestion Posted by Parkavi on Thu March 25 2010 07:41:18 AM 4

The latest and greatest use of seaweed is the fibrous alginate extracted from sea kelp, which can be added to everyday products such as bread, and reduce fat absorption in the body by 75 percent. The findings, which came out of Newcastle University in the U.K., were presented this week at the American Chemical Society's spring meeting in San Francisco.

The Newcastle University team tested the effectives of 60 types of fibers, utilizing an artificial gut, to gauge the extent that the aided in the digestion of fat. The results showed that kelp came out on top and proved more effective than most anti-obesity treatments available over the counter.