Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Cleaner manure burns hotter in ethanol processing

25.05.2007
Clean manure may sound like an oxymoron, but Dr. Brent Auvermann is working with feedyard owners to help them get the most "spark" from it as a fuel source.

Auvermann, a Texas Cooperative Extension engineering specialist, hosted "Producing High-Value Manure for BioFuels and Fertilizer" recently in Hereford. The meeting outlined work by Texas Agricultural Experiment Station researchers to determine best management practices for scraping manure from the feed pens. "We're doing something that has never been done before," said Arles "Bugs" Graham, Panda Energy International's general manager for the Hereford plant. Graham spoke at the meeting. "We're using your manure as an energy source," he said. "It's a very complex process."

After starting up the plant with natural gas as the boiler fuel, Panda Energy will eventually use manure as a fuel source when producing ethanol for an E10 fuel blend, Graham said.

The plant will initially process corn for ethanol, although the company is looking at alternative sources of starch to make the ethanol, and it will produce distiller's grains as a by-product.

"But manure is our future," Graham said, estimating each plant will use 1,500 tons a day.

Jim Adams, Panda Energy vice president-fuels, said the plant will begin asking yards in June to sign up for a percentage of their manure. The past winter was a wake-up call, Adams said. Sometimes when the weather is too wet, manure can't be harvested from the pens. Manure will be used by this fall, so "we have to start stockpiling now" to ensure a steady supply.

Adams said the plant will use manure on a six-day basis, requiring 70 to 80 truckloads per day. Panda's contractor will collect from the pens when they are dry enough, but will need to pull from stockpiles when pen surfaces are too wet.

Quality is the biggest issue, Auvermann said. The manure needs to burn at a minimum rate of 2,758 British thermal units per pound of manure. That number changes according to the amount of pollutants - moisture and dirt - included when the pen is scraped.

If all the water and contaminants were removed from the manure, the highest quality would be 8,500 Btu, "but we can't do that, because we can't take the ash out completely," he said.

Manure from soil-surfaced pens may not always meet the minimum heating value on an as-received basis, Auvermann said. Feedyard operators will have to take some steps to improve it.

The timeliness of collection and depth of scraping will be key to keeping dirt content below 60 percent and moisture content below 20 percent, he said. "Paving the pens with a crushed ash or a fly-ash material (from coal-fired power plants) will end up returning to you in the form of heating value û big time," Auvermann said.

Partially composted manure from paved pens can have a heating value almost equivalent to that generated by burning Texas lignite coal, he said.

Feedyard owners should consider the process as "harvesting manure" rather than cleaning pens, Auvermann said. The ultimate goal is to have a hard, smooth, well-drained corral surface. Implementing good practices will pay at the bottom line, he said.

Conscientious manure harvesting can result in higher fuel and fertilizer values, reduced feed requirements for cattle, improved pen drainage, and reduced odor, dust and flies.

Brent Auvermann | EurekAlert!
Further information:
http://www.tamu.edu

More articles from Agricultural and Forestry Science:

nachricht New 3-D model predicts best planting practices for farmers
26.06.2017 | Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign

nachricht Fighting a destructive crop disease with mathematics
21.06.2017 | University of Cambridge

All articles from Agricultural and Forestry Science >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Manipulating Electron Spins Without Loss of Information

Physicists have developed a new technique that uses electrical voltages to control the electron spin on a chip. The newly-developed method provides protection from spin decay, meaning that the contained information can be maintained and transmitted over comparatively large distances, as has been demonstrated by a team from the University of Basel’s Department of Physics and the Swiss Nanoscience Institute. The results have been published in Physical Review X.

For several years, researchers have been trying to use the spin of an electron to store and transmit information. The spin of each electron is always coupled...

Im Focus: The proton precisely weighted

What is the mass of a proton? Scientists from Germany and Japan successfully did an important step towards the most exact knowledge of this fundamental constant. By means of precision measurements on a single proton, they could improve the precision by a factor of three and also correct the existing value.

To determine the mass of a single proton still more accurate – a group of physicists led by Klaus Blaum and Sven Sturm of the Max Planck Institute for Nuclear...

Im Focus: On the way to a biological alternative

A bacterial enzyme enables reactions that open up alternatives to key industrial chemical processes

The research team of Prof. Dr. Oliver Einsle at the University of Freiburg's Institute of Biochemistry has long been exploring the functioning of nitrogenase....

Im Focus: The 1 trillion tonne iceberg

Larsen C Ice Shelf rift finally breaks through

A one trillion tonne iceberg - one of the biggest ever recorded -- has calved away from the Larsen C Ice Shelf in Antarctica, after a rift in the ice,...

Im Focus: Laser-cooled ions contribute to better understanding of friction

Physics supports biology: Researchers from PTB have developed a model system to investigate friction phenomena with atomic precision

Friction: what you want from car brakes, otherwise rather a nuisance. In any case, it is useful to know as precisely as possible how friction phenomena arise –...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

»We are bringing Additive Manufacturing to SMEs«

19.07.2017 | Event News

The technology with a feel for feelings

12.07.2017 | Event News

Leipzig HTP-Forum discusses "hydrothermal processes" as a key technology for a biobased economy

12.07.2017 | Event News

 
Latest News

Researchers create new technique for manipulating polarization of terahertz radiation

20.07.2017 | Information Technology

High-tech sensing illuminates concrete stress testing

20.07.2017 | Materials Sciences

First direct observation and measurement of ultra-fast moving vortices in superconductors

20.07.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>