Navigation Links
Landfill cover soil methane oxidation underestimated
Date:4/27/2009

MADISON, WI, APRIL 27, 2009 Landfilled waste decomposes in the absence of oxygen and results in the production of methane. Landfills are classified as the second-largest human-made source of CH4 in the U.S. Additionally, landfill gas contains numerous non-methane hydrocarbons that are either volatilized directly from waste materials or produced through biochemical reactions during waste degradation.

Microbial methane oxidation reduces the emissions of methane and other volatile hydrocarbons from landfills. Determining the importance of this process is one of the major uncertainties in estimating national or global CH4 emissions from landfills. Landfill gas that is not collected passes through landfill cover soils on the way to being released to the environment. Bacteria in the soil consume methane and other volatile hydrocarbons that are produced by decomposition in the underlying waste by reacting it with oxygen.

A value of 0 to 10% oxidation has been recommended by the Intergovernmental Panel on Climate Change guidelines for national greenhouse gas inventories. Currently, for regulatory purposes the USEPA has recommended a default value for landfill cover CH4 oxidation of 10% due to the uncertainty involved and the lack of a standard method to determine oxidation rate.

Drs. Jeffrey Chanton, David Powelson, and Roger Green of Florida State University and Waste Management Inc. reviewed and compiled literature results from 42 determinations of the fraction of methane oxidized and 30 determinations of methane oxidation rate in a variety of soil types and landfill covers. The results were published in the March-April issue of the Journal of Environmental Quality. The means for the fraction of methane oxidized upon transit across the differing types of soil covers ranged from 22% in clayey soil to 55% in sandy soil. The overall mean fraction oxidized across all studies was 36% with a standard error of 6%. For a subset of fifteen
'/>"/>

Contact: Sara Uttech
suttech@agronomy.org
608-268-4948
American Society of Agronomy
Source:Eurekalert

Page: 1 2

Related biology news :

1. UNH becomes first university in nation to use landfill gas as primary energy source
2. Researchers discover that gene switches on during development of epilepsy
3. Newly discovered epidermal growth factor receptor active in human pancreatic cancers
4. TGen researchers discover possible way to block the spread of deadly brain tumors
5. Yale researchers uncover secrets of salmonellas stealth attack
6. Penn biologists discover how silent mutations influence protein production
7. Field stations foster serendipitous discoveries in environmental, biological sciences
8. UC and partners awarded $23 million to transform discoveries into real-world health solutions
9. Penn researchers demonstrate a new model for drug discovery with a fluorescent anesthetic
10. Researchers discover primer to plant defense system
11. Gene discovery could lead to male contraceptive
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:11/7/2014)... , November 6, 2014 Leading ... for better mobile security revolutionizing online transactions.  Companies in focus ... Holdings Ltd. (NYSE: BABA ), Google Inc. (NASDAQ: ... ), eBay Inc. (NASDAQ: EBAY ) and MasterCard ... NXTD and NXTDW), a biometric authentication company focused on ...
(Date:11/5/2014)... biology in the UTSA College of Sciences, is ... to receive a two-year $300,00 National Science Foundation ... The funding supports President Obama,s BRAIN Initiative, a ... technology that will demystify complex brain processes. ... are broken into the interactions of multiple components, ...
(Date:11/4/2014)... PA) – Temple University School of Medicine announced ... winner, an initiative funded by the Bill & ... Professor of Obstetrics, Gynecology and Reproductive Sciences; and ... Temple University School of Medicine will pursue an ... "Maternal Blood Biomarkers to Assess Fetal Neurodevelopment.", Grand ...
Breaking Biology News(10 mins):Universal Authentication Methods Provide More Secure Operations for Biometrics Devices - Company Joins FIDO Alliance for Consumer Protection 2Universal Authentication Methods Provide More Secure Operations for Biometrics Devices - Company Joins FIDO Alliance for Consumer Protection 3Universal Authentication Methods Provide More Secure Operations for Biometrics Devices - Company Joins FIDO Alliance for Consumer Protection 4Universal Authentication Methods Provide More Secure Operations for Biometrics Devices - Company Joins FIDO Alliance for Consumer Protection 5Universal Authentication Methods Provide More Secure Operations for Biometrics Devices - Company Joins FIDO Alliance for Consumer Protection 6UTSA biology professor awarded $300,000 NSF grant for brain research 2UTSA biology professor awarded $300,000 NSF grant for brain research 3Temple University School of Medicine receives Grand Challenges Explorations grant 2
... of burning fossil fuels, running factories and driving cars, ... maple trees growing in the Northeast, according to a ... The sugar maple is the most economically valuable tree ... high-priced lumber, syrup and tourist-attracting fall colors. ...
... burning fossil fuels, running factories and driving cars, has ... trees growing in the Northeast, according to a new ... sugar maple is the most economically valuable tree species ... lumber, syrup and tourist-attracting fall colors. , ...
... or smell, receptors unique to each nerve cell detect the ... process the message to understand what we are smelling or ... it must use many different receptors to sense and interpret ... environments changes in molecular concentrations as small as 0.1 percent, ...
Cached Biology News:Gene therapy prevents the onset of diabetic symptoms in mice 2Gene therapy prevents the onset of diabetic symptoms in mice 3Acid rain causing decline in sugar maples, say researchers 2Acid rain causing decline in sugar maples, say researchers 3Researchers discover how bacteria sense their environments 2
(Date:11/26/2014)... PHILADELPHIA , Nov. 26, 2014 Space ... Human exploration of space requires astronauts to maintain consistently ... and success, and prevent potential errors and accidents. Despite ... is known about how cognition is affected by prolonged ... Now, Penn Medicine researchers are poised to ...
(Date:11/26/2014)... 2014 Whitehouse Laboratories is pleased ... Morris County (New Jersey) Chamber of Commerce as ... business organization in the North Jersey area, offers ... some key clients in the pharmaceutical and biotechnology ... area. Membership enables Whitehouse Laboratories a higher level ...
(Date:11/26/2014)... November 25, 2014 Global biostimulants ... 2019 growing at an estimated CAGR of 12.5%. ... healthy food products with least ecological impacts, farmers ... fertilizers to boost crop yield more effectively & ... that can improve the return on investments. , ...
(Date:11/26/2014)... 25 novembre 2014 Theravalues Corporation est fier ... marché européen au salon Hi Europe 2014 (du ... ). Curcumine la plus biodisponible actuellement ... (non-cristalline) à des ingrédients approuvés par les règlements ... jaune présent dans la racine de curcuma ( ...
Breaking Biology Technology:Penn Medicine Team Develops Cognitive Test Battery to Assess the Impact of Long Duration Spaceflights on Astronauts' Brain Function 2Penn Medicine Team Develops Cognitive Test Battery to Assess the Impact of Long Duration Spaceflights on Astronauts' Brain Function 3Penn Medicine Team Develops Cognitive Test Battery to Assess the Impact of Long Duration Spaceflights on Astronauts' Brain Function 4Whitehouse Laboratories Joins Morris County Chamber of Commerce 2Whitehouse Laboratories Joins Morris County Chamber of Commerce 32019 Biostimulants Market to Grow at a CAGR of 12.5% Says a New Research Report Available at RnRMarketResearch.com 22019 Biostimulants Market to Grow at a CAGR of 12.5% Says a New Research Report Available at RnRMarketResearch.com 32019 Biostimulants Market to Grow at a CAGR of 12.5% Says a New Research Report Available at RnRMarketResearch.com 4La curcumine présentant la plus haute biodisponibilité bientôt en vente en Europe 2La curcumine présentant la plus haute biodisponibilité bientôt en vente en Europe 3
... /PRNewswire-FirstCall/ - Oncolytics Biotech Inc. (TSX:,ONC, NASDAQ: ONCY) ... research group at The Institute of Cancer Research, ... combination treatment schedules,of reovirus and radiation in human ... The paper, entitled "Enhanced In vitro and In ...
... environment and holding it indefinitely in molecular-sized containers has been ... say it represents a novel method of gas storage that ... safely and efficiently. , This is a proof of concept ... just improving on a method that already exists, said U ...
... the economy is not,only heading towards a recession but ... during January. However, biotech held steady,with the Burrill Biotech ... posted a January loss of 9.9%, and the Dow, ... ride out extremely volatile capital,markets with less damage because ...
Cached Biology Technology:Oncolytics Biotech Inc. Announces Publication of Research on Combination Reovirus and Radiation Therapy 2Rounding up gases, nano-style 2January Market Jitters Fails to Derail Biotech 2January Market Jitters Fails to Derail Biotech 3January Market Jitters Fails to Derail Biotech 4
A convenience pack containing one each of the most popular sizes of Cat. No. 4980 flask. Designed for the low volume user, a case contains one each of five sizes: 50mL, 125mL, 250mL, 500mL, and 1L....
Narrow-mouth has heavy-duty rim. Approximate graduations are in durable white enamel. Extra large marking space. capacity 125 mL Special grade: student grade...
... is a new product number, ... product number. If showing no ... the old Sigma-Aldrich number (Z71,669-3) ... assistance. ID clarifier: barcoded Mfr ...
Certified by the Biological Stain Commission. For staining fresh peripheral blood smears and blood parasites....
Biology Products: