Engineering News Blog

Engineering News

Latest news of interest to engineers. Sourced from GlobalSpec's Engineering News

Previous in Blog: We Need Alternative Sources of Bandwidth Just Like We Need Alternative Sources of Fuel   Next in Blog: US To Launch Military Orbital Spaceplane
Close
Close
Close
5 comments
Rating: Comments: Nested

Biomass Production

Posted July 31, 2008 8:34 AM

From The Engineer:

University of Georgia researchers have developed a new process to increase the yield of ethanol from readily available non-food crops, such as bermudagrass, switchgrass and napiergrass. Joy Peterson, professor of microbiology and chair of UGA's Bioenergy Task Force, said: 'Producing ethanol from renewable biomass sources such as grasses is desirable because they are potentially available in large quantities. And optimising the breakdown of the plant fibres is critical to production of liquid transportation fuel via fermentation.'

Read the whole article

Reply

Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

"Almost" Good Answers:

Check out these comments that don't yet have enough votes to be "official" good answers and, if you agree with them, vote them!
Guru
New Zealand - Member - Interested in everything- see my Profile please APIX Pilot Plant Design Project - Member - Member Engineering Fields - Electrical Engineering - Member Engineering Fields - Power Engineering - Member Engineering Fields - Civil Engineering - Member Hobbies - Musician - Autoharp and Harmonica Hobbies - Hunting - Member Hobbies - Fishing - Member

Join Date: Nov 2007
Location: Christchurch, (The Garden City), South Island, New Zealand
Posts: 4395
Good Answers: 230
#1

Re: Biomass Production

07/31/2008 9:20 PM

The use of green algae for biomass oil and food production, is more efficient than grass-based sources can ever be.

All that grass has got to be sowed, growed, mowed and the fermented/processed in giant tanks.

The algae system is far more readily controlled.

Kind Regards....

__________________
"The number of inventions increases faster than the need for them at the time" - SparkY
Reply
Power-User

Join Date: Apr 2008
Location: Indiana
Posts: 331
Good Answers: 10
#2
In reply to #1

Re: Biomass Production

08/01/2008 11:20 AM

Yes, true, but you are missing the big idea. People could be producing their own grass from their yard clippings (if they have a big enough yard). Cities could collect grass clippings from residences and businesses and create fuel for the city. Grass is very abundant and easily grown. I have been hoping for a home ethanol production system that uses my grass clippings.

__________________
"We cannot sow thistles and reap clover. Nature simply does not run things that way. She goes by cause and effect." Napoleon Hill
Reply
Guru
New Zealand - Member - Interested in everything- see my Profile please APIX Pilot Plant Design Project - Member - Member Engineering Fields - Electrical Engineering - Member Engineering Fields - Power Engineering - Member Engineering Fields - Civil Engineering - Member Hobbies - Musician - Autoharp and Harmonica Hobbies - Hunting - Member Hobbies - Fishing - Member

Join Date: Nov 2007
Location: Christchurch, (The Garden City), South Island, New Zealand
Posts: 4395
Good Answers: 230
#3
In reply to #2

Re: Biomass Production

08/07/2008 7:26 AM

Hello WWkayaker

Here we are the mose efficient growers of grass in the world.

We convert most of ours to milk, meat, wool, cheese and similar useful products.

To convert a home lawn of grass clippings top ethanol would not be cost-effective, because of the high initial costs for a small converter, and as the converter is made larger, the internal volume increases faster than the external surface area, thus becomes easier to keep at the optimum temperatures.

It is not generally realised how much grass is needed to be fermented to obtain useful amounts of ethanol.

And dependent on one's location, generally the Government State Corporation is going to require mandatory annual inspection, licence, tax on ethanol produced, and even more methods of extracting a greater amount from your wallet.

Then there are the fire and explosion hazards, which preclude a "home-based" ethanol still, and even if you manage all the above, your neighbours are either likely to come over regularly for drinks, or will complain to the local Authorities.

Grass clippings and other organic materials, are regularly collected by some enlightened local Authorities, who compost the green matter, and sell it back at half price to donors of the uncomposted green matter.

Talk to your local Authority, start something in your local area, there is good money in it.

If all fails, get a deep used-up quarry, ensure it is lined and/or will not leach water over the next 20 years.

Invite folks, for a small fee, to bring their green matter along, and build yourself a huge methane generator, and in a few years, you can pipe that gas, burn it in a small power station, and sell the electricity to the local network.

Lateral thinking, along with some money and enthusiasm, is what is needed, for good success.

Kind Regards....

__________________
"The number of inventions increases faster than the need for them at the time" - SparkY
Reply Score 1 for Good Answer
Power-User

Join Date: Apr 2008
Location: Indiana
Posts: 331
Good Answers: 10
#4
In reply to #3

Re: Biomass Production

08/14/2008 9:09 AM

Great suggestion! I gave you a GA rating for it. I will see what my city is willing to do.

__________________
"We cannot sow thistles and reap clover. Nature simply does not run things that way. She goes by cause and effect." Napoleon Hill
Reply
Guru

Join Date: Dec 2005
Location: Queensland Coalfields Australia.
Posts: 697
Good Answers: 11
#5
In reply to #3

Re: Biomass Production

08/28/2008 10:35 PM

They aren't talking lawn grass or pasture grass here, but stuff more like sugar cane or bamboo. Tonnes per hectare are much higher and have the potential to be rotation crops or stabilisation crops. Technology to harvest already exists via cane harvesters. It will be interesting to watch it all unfold. Hopefully cellulosic grasses and algae will compete head to head.

Reply
Reply to Blog Entry 5 comments

"Almost" Good Answers:

Check out these comments that don't yet have enough votes to be "official" good answers and, if you agree with them, vote them!
Copy to Clipboard

Users who posted comments:

Emjay4119 (1); Sparkstation (2); WWkayaker (2)

Previous in Blog: We Need Alternative Sources of Bandwidth Just Like We Need Alternative Sources of Fuel   Next in Blog: US To Launch Military Orbital Spaceplane

Advertisement