Showing posts with label Alternateive Energy. Show all posts
Showing posts with label Alternateive Energy. Show all posts

Sunday, January 3, 2010

Engineered tobacco plants have more potential as a biofuel

Engineered tobacco plants have more potential as a biofuel

Saturday, November 28, 2009

Generating electricity from air flow

A group of researchers at the City College of New York is developing a new way to generate power for planes and automobiles based on materials known as piezoelectrics, which convert the kinetic energy of motion into electricity

Details ..........Generating electricity from air flow

Friday, November 13, 2009

Electricity from sugarcane biomass...

Engineer Vikram Seebaluck of the University of Mauritius and energy technology Dipeeka Seeruttun of the Royal Institute of Technology, in Stockholm, Sweden, have demonstrated that an optimal blend of sugarcane agricultural residues (30%) mixed with 70% sugarcane bagasse (the fibrous residue left after sugar production) can be used to generate electricity at a cost of just 0.06 US dollars per kilowatt hour. That figure is on a par with the costs of other renewable energies, including wind power at $0.05/kWh.

Currently, sugarcane bagasse is burnt for onsite heat and electricity production at sugar factories and surplus electricity is exported to the grid. That still leaves 24 tonnes per hectare of waste in the fields. As per the claim by the researchers, the waste has a similar energy content to bagasse, which could make it technically viable to use this material together with bagasse in a more effective way for electricity production. The 30:70 mixture of waste and bagasse reduces the risk of fouling or slagging of the furnaces used to burn the material. I would say a kannada proverb "kasadinda rasa"..(meaning sweet solution from the waste)

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Friday, October 2, 2009

Herbicide as a catalyst to generate electricity from carbohydrates ?

In the recent times we have seen many research groups working on biofuels or alternative energy sources. This article is really interesting, here in the researchers (Brigham Young University) claim that with a help of a herbicide (they have'nt mentioned the name, but say a common herbicide which is cheap also) have developed a fuel cell – basically a battery with a gas tank – that harvests electricity from glucose and carbohydrates.

Deriving electrical energy from glucose and other carbohydrates under mild conditions is an important research objective because these biomolecules are abundant, renewable, have high energy density, and are convenient as fuels. The researchers Gerald Watt, claim that viologen catalysts meet these demanding criteria by catalytically oxidizing glucose and other carbohydrates in a mildly alkaline solution, making possible a direct carbohydrate fuel cell. Formate and carbonate are major products of carbohydrate oxidation, demonstrating that extensive carbon–carbon bond breaking has occurred. A rudimentary fuel cell utilizing viologen catalysts and glucose or dihydroxyacetone as fuels demonstrated electrical power production at up to 20 mA/cm2 superficial current density. Improved catalyst function and cell design should significantly advance the efficiency and viability of direct carbohydrate fuel cell technology as a means of generating electrical energy from renewable biomass.

The effectiveness of this cheap and abundant herbicide is a boon to carbohydrate-based fuel cells. By contrast, hydrogen-based fuel cells like those developed by General Motors, require costly platinum as a catalyst. Congrats for this innovative idea....

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