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pedro san pedro
31st May 2005, 02:11
Where most people see pond scum, Isaac Berzin sees oil--and a hedge against global warming.

Berzin is the founder and chief technology officer of GreenFuel Technologies, a Cambridge, Mass.-based start-up that has a novel approach to energy and pollution control.

Using technology licensed from a NASA project, GreenFuel builds bioreactors--in the shape of 3-meter-high glass tubes fashioned as a triangle--to grow algae. The algae are fed with sunlight, water and carbon-carrying emissions from power plants. The algae are then harvested and turned into biodiesel fuel.

GreenFuel is one of many companies developing businesses based on alternative energies such as biodiesel and so-called clean technologies. These companies are targeting business customers that might benefit from innovative approaches to reducing pollution or lowering their fuel spending.

"Businesses look at productivity and how to eliminate cost--one way is to eliminate waste or to use what you have more efficiently," said Nicholas Parker, executive director of investment group Cleantech Venture Network. "In many ways, clean tech is the enabling tech of 21st-century industrial society."

GreenFuel is initially focusing on energy utilities, which generate greenhouse gases that are seen as contributors to global warming and climate change. But its bioreactor technology can be used in many types of industrial installations or refineries, Berzin said.

The potential benefits of the system are twofold: Heavy polluters can cut down on their emissions, and the system can be used for large-scale biodiesel production. Biodiesel, which is often created with vegetable oils from crops such as soybeans, can be used as an alternative to petroleum-based diesel fuel in cars or trucks.

Full Story (http://news.com.com/Start-up+drills+for+oil+in+algae/2100-7337_3-5714269.html)

ÑóẊîöʼn
31st May 2005, 11:49
Hmmm, very, very interesting. I hope it takes off.

Has anyone looked into harvesting methane from sewage and animal effluence to produce fuel? Methane derivatives make good fuel.

pedro san pedro
31st May 2005, 12:27
a few people are getting it from pig farms and from rubbish dumps.

methane is a greenhouse gas though......

ÑóẊîöʼn
31st May 2005, 13:04
Originally posted by pedro san [email protected] 31 2005, 11:27 AM
a few people are getting it from pig farms and from rubbish dumps.

methane is a greenhouse gas though......
Not when you burn it though - the main product of burning methane is water I think.

pedro san pedro
1st June 2005, 00:18
right - so burning it would actualy reduce the level of greenhouse gases released?

KptnKrill
1st June 2005, 01:13
Originally posted by [email protected] 31 2005, 10:49 AM
Hmmm, very, very interesting. I hope it takes off.

Has anyone looked into harvesting methane from sewage and animal effluence to produce fuel? Methane derivatives make good fuel.
That's actually highly doable. Though that shouldn't be relied upon to provide your mainstay as it's not incredibly efficient. But it's a good way of getting rid of wastes and generating a little spare energy too.

http://en.wikipedia.org/wiki/Thermal_depolymerization

cormacobear
1st June 2005, 06:39
Bio deisel gives off CO too, and there are lots of companies using Methane from Cattle feces, and mathane given off from buried garbage dumps. As for the Algae it would be more productive and cleaner to collect the Oxygen given off and compress and use that, rockets use liquid O2 as fuel

bed_of_nails
1st June 2005, 23:33
Anything you burn is going to cause CO2.

Combustion has two side effects: Water and Carbon-Dioxide.

ÑóẊîöʼn
2nd June 2005, 06:48
Originally posted by pedro san [email protected] 31 2005, 11:18 PM
right - so burning it would actualy reduce the level of greenhouse gases released?
As long as you allow the waste water to condense into a liquid, then yes. (Water vapour is a greenhouse gas)

Che NJ
3rd June 2005, 20:26
I've heard of a scientist who studied the speed and consistency of wind across North America and has picked out spots across the continent where he feels that wind energy can be efficently harnessed. He actually says that if windmills are set up at all of the locations he has selected, we will have more power than we need.

BOZG
3rd June 2005, 20:36
Originally posted by Che [email protected] 3 2005, 07:26 PM
I've heard of a scientist who studied the speed and consistency of wind across North America and has picked out spots across the continent where he feels that wind energy can be efficently harnessed. He actually says that if windmills are set up at all of the locations he has selected, we will have more power than we need.
The current problem with many wind mills is that quite often they're not efficient enough, not because they can't generated enough power, but that they generate too much and that a lot of generators can't absorb the full amount. It's currently a problem with some of Ireland's windfarms.