Navigation Links
Biofilters reduce carbon footprint of old landfill sites
Date:7/11/2011

Researchers in the US are testing biofilter systems as a viable alternative to releasing methane from passive landfill vents into the atmosphere. The technology could reduce the overall impact of old landfills on global warming. Details are reported in the current issue of the International Journal of Environmental Engineering.

Organic matter rotting in smaller, old landfill sites generates a slow trickle of the potent greenhouse gas, methane, into the atmosphere, amounting to just 2 or 3 kilograms per day per vent. In contrast to controlled methane generate for biofuel from modern, managed landfills, tapping this slow stream of the gas is not viable technologically or economically. However, methane has an infrared activity 21 times greater than carbon dioxide and so represents an important anthropogenic source of this greenhouse gas when attempting to balance the climate change books. Indeed, landfills contribute 12% of worldwide anthropogenic methane emissions due to the decomposition of organic waste.

Old landfills typically have passive gas vents. Methane is simply released into the atmosphere from these vents, or if the rate of emission is high enough it can be burned, or flared. According to Tarek Abichou and Jeffery Chanton of the Florida State University, Jose Morales of Environmental and Geotechnical Specialists, Inc., Tallahassee, Florida and Lei Yuan of Geosyntec Consultants in Columbia, Maryland, methane oxidation has recently been viewed as a more benign alternative to venting or flaring of landfill methane.

The researchers tested two biofilter designs capable of oxidizing methane gas to carbon dioxide and water. Both are packed with so-called methanotrophic bacteria, microbes that digest methane. They found that the radial biofilter design gave a much higher methane oxidation rate than a vertical biofilter. The higher surface area exposed to methane flow led to greater oxygen penetration into the biofilters, essen
'/>"/>

Contact: Lei Yuan
lyuan@geosyntec.com
Inderscience Publishers
Source:Eurekalert

Page: 1 2

Related biology news :

1. Study: Preventive use of one form of natural vitamin E may reduce stroke damage
2. Folate intake may reduce colorectal cancer risk
3. Twin-head cucumber system reduces start-up costs
4. Popeyes Restaurant Franchisee Uses DigitalPersona Fingerprint Biometrics to Reduce Employee Fraud
5. IOF calls for improved strategies to close the treatment gap and reduce future burden of fractures
6. Low-carbohydrate, high-protein diets may reduce both tumor growth rates and cancer risk
7. B vitamins in mothers diet reduce colorectal cancer risk in offspring
8. Protein could offer target to reduce lung damage from smoking-caused emphysema
9. New strategy aims to reduce agricultural ammonia
10. Ozone reduces fungal spoilage of fruits and vegetables
11. Nanopolymer shows promise for helping reduce cancer side effects
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/23/2014)... allergies and other chronic inflammatory disorders among people of ... their reduced exposure to the microbes that thrive in ... The article, published in the journal Clinical & ... centers who have less access to green spaces may ... caused by immune system dysfunction. , When our immune ...
(Date:4/23/2014)... This news release is available in French and ... woman? Male or female? In humans and other mammals, the difference ... Y chromosome. It is present only in males, where the two ... chromosomes. Thus, the Y is ultimately responsible for all the morphological ... not always been the case. A very long time ago, the ...
(Date:4/23/2014)... ripping open a dinner roll, a fuel cell catalyst ... hydrogen molecule. Now researchers have captured a view of ... its hydrogen feast. The view confirms previous hypotheses and ... better for alternative energy uses. , This study is ... hydrogen halves end up in the structure of a ...
Breaking Biology News(10 mins):Rural microbes could boost city dwellers' health 2Rural microbes could boost city dwellers' health 3Male or female? 2Male or female? 3Halving hydrogen 2Halving hydrogen 3Halving hydrogen 4
... in Europe and United States are markedly underestimating the ... to prevent dangerous climate change because they work in ... from The University of Manchester, discovered that the lack ... has resulted in significant differences over who is responsible ...
... An international research team has identified a common gene ... atrial fibrillation. In their report in the journal ... that variations affecting a protein that may help control the ... is called lone atrial fibrillation (AF), a type seen in ...
... Blacksburg, Va. -- Math-based computer models are a powerful ... John Tyson, professor of biology at Virginia Tech, is ... and make decisions. "Cells receive information in the ... or radiation damage, for instance," Tyson said. "On the ...
Cached Biology News:Governments 'misjudging' scale of CO2 emissions 2Common gene variant may increase risk for a type of cardiac arrhythmia 2Biologists use mathematics to advance our understanding of health and disease 2Biologists use mathematics to advance our understanding of health and disease 3
(Date:1/15/2014)... device," Nobel laureate Herbert Kroemer famously observed, referring ... the junctures where layers of different materials meet. ... between layers of metal oxides are becoming increasingly ... spintronics, high-temperature superconductors, ferroelectrics and multiferroics. Realizing the ...
(Date:1/15/2014)... 2014 The Pittcon Organizing Committee is pleased ... Safety Tech , an e-Journal and producer of ... the second year for the co-location of Food Labs Conference ... provides that the registration fee to attend the two-day Food ...
(Date:1/15/2014)... Look inside the new Preferred Solutions® ... lab, from fluid handling to instruments to supplies. Many ... you order. , Preferred Solutions features a full ... L/S® model for precise flow control and dispensing to ...
(Date:1/15/2014)... OXFORD, England and SAN JOSE, California ... an international biotechnology company developing antibody-drug conjugates for cancer, today ... its Board of Directors. Dr Reynolds has over 20 years, ... Chief Medical Officer at Seattle Genetics. "I am ...
Breaking Biology Technology:A deeper look at interfaces 2Pittcon Announces Second Year Partnership With Food Safety Tech 2Pittcon Announces Second Year Partnership With Food Safety Tech 3Cole-Parmer Begins 2014 with the Release of Preferred Solutions 2Oxford BioTherapeutics Appoints Thomas C Reynolds MD, PhD to its Board of Directors 2Oxford BioTherapeutics Appoints Thomas C Reynolds MD, PhD to its Board of Directors 3
... equity stake in Zenotech Laboratories to 45%, GURGAON, ... Laboratories Limited (Zenotech) today announced the,signing of Definitive Agreements, ... its current 7% to 45% at a price of ... involves: (a) Purchase of shares from the existing ...
... Monday, October 8, at 2:15 ... p.m. ... Sciences Holdings, Inc. (Nasdaq: ADLS ), a biopharmaceutical,company engaged in the ... respiratory diseases and,cancer, is scheduled to present at the Natixis Bleichroeder Hidden ...
... 3 /PRNewswire-FirstCall/ - Biomira Inc. (Nasdaq: BIOM ... President and Chief,Executive Officer, is scheduled to present ... 2:45pm PDT/5:45pm EDT on Wednesday, October 10. ... and can be accessed at: http://www.corporate-ir.net/ireye/confLobby.zhtml?ticker=BIOM&item_id=1 ...
Cached Biology Technology:Ranbaxy to Consolidate Position in Biopharmaceuticals and Speciality Injectables Including Oncology 2Ranbaxy to Consolidate Position in Biopharmaceuticals and Speciality Injectables Including Oncology 3Advanced Life Sciences to Present at Natixis Bleichroeder Hidden Gems Conference 2
Rabbit polyclonal to Tryptophanyl tRNA synthetase ( Abpromise for all tested applications). Antigen: Recombinant full length protein (Human): Tryptophanyl tRNA synthetase Entrez Gene ID: 745...
Goat polyclonal to FBXO2 ( Abpromise for all tested applications). entrezGeneID: 26232 SwissProtID: Q9UK22...
Rat monoclonal to UGGT ( Abpromise for all tested applications)....
... (Ser843) Immunogen: ... encompassing the human, mouse, and rat ... Number: NM_153831 ... by immunoblot. ...
Biology Products: