alexa Abstract | Methanotrophic Oxygen Dependency and Availability for Sustained Oxidation
E-ISSN: 2252-5211

International Journal of Waste Resources
Open Access

OMICS International organises 3000+ Global Conferenceseries Events every year across USA, Europe & Asia with support from 1000 more scientific Societies and Publishes 700+ Open Access Journals which contains over 50000 eminent personalities, reputed scientists as editorial board members.

Open Access Journals gaining more Readers and Citations

700 Journals and 15,000,000 Readers Each Journal is getting 25,000+ Readers

This Readership is 10 times more when compared to other Subscription Journals (Source: Google Analytics)

Research Article Open Access


The oxidation of landfill methane is dependent upon a multitude of factors, some of which have been researched in-depth, while others require further investigation. One of the factors, that has not been carefully looked into, is the time factor for soils to rejuvenate and start oxidising methane efficiently. Using a batch reactor, soil samples, having no or little exposure to methane, were compared with other samples that had continuous methane exposure, in terms of the time they took to allow efficient methanotrophic mitigation of methane. In addition, the effect of oxygen availability and continuity to supply nourishment to the methanotrophic bacteria in relation to the soil types and the conditions of the soil's exposure to methane was also investigated. The results showed that acclimation time was an important factor in establishing high methane oxidation activity, with up to four days of lag time being observed before the methane oxidation could commence, as was the case for soil samples, previously exposed to methane. This is particularly important, since active land filling could last for twenty years of active operations, and would release up to an estimated 2.1 to 2.8 x 104 MtCO2-eq per day per landfill of methane into the atmosphere, globally, if the time lag were not controlled. Most importantly however, was the oxygen availability in landfill cover layers. The study showed that physical mixing of samples by mechanical agitation during incubation could allow higher concentrations of oxygen to permeate into the soil, increasing methane oxidation rates, which were approximately doubled due to this action. Furthermore, a linear relationship was found to form between methane consumption and the time when oxygen concentration was not rate limiting to the bacteria.

To read the full article Peer-reviewed Article PDF image | Peer-reviewed Full Article image

Author(s): Abdulazize Alshareedah and P. Sallis


Landfill gas control, Landfill cover design, Methane assimilation, Oxidation lag time, Oxygen sustainability in soils, Nuclear waste, Recyclable waste, Fly ash, Waste management, Special waste

Share This Page

Additional Info

Loading Please wait..
Peer Reviewed Journals
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version