soil oxygen News

  • When oxygen makes pollution worse

    Oxidation of sulfides in mining wastes produces high concentrations of sulfate, iron, and other metals, and frequently also very low pH values. Compared to fine-grain mine tailings, produced in ore treatment by flotation and other techniques, waste rock is just displaced material comprising large size particles and deposited in waste rock piles. In waste rock piles with high permeability and ...

  • Even soil feels the heat

    Twenty years of field studies reveal that as the Earth has gotten warmer, plants and microbes in the soil have given off more carbon dioxide. So-called soil respiration has increased about one-tenth of 1 percent per year since 1989, according to an analysis of past studies in this week's issue of Nature. The scientists also calculated the total amount of carbon dioxide flowing from soils, which ...

  • Impact of floods on soils

    A recent study conducted in the Midwestern United States examined the effects of harsh wet conditions on both cultivated and uncultivated soils, vastly advancing the knowledge of water’s effects on aggregation. Soil aggregation is an important soil attribute that is related to the physical-chemical state of the soil, and is one of the essential processes that determine soil quality. During the ...


    By ScienceDaily

  • Petroleum-impacted soil remediation

    The Adventus Group is an applied environmental products company that provides various remediation biotechnologies – including those exclusive to our patent portfolio (see below). We are NOT consultants, and are geared towards supporting client project teams by providing unbiased design, support and selection of the most cost-effective remedial solution or strategy. As appropriate, our ...


  • Wind drives oxygen transport in Arctic waste rock

    The growth of the diamond mining industry in Canada’s Northwest Territories has led to significant economic benefit to the region with three operating mines producing approximately 13% of the world’s diamonds in 2008, according to the Mining Association of Canada. However, the long-term benefit to northern communities will depend on careful environmental management of mining activities. The ...

  • Genome of nitrogen-fixing, soil-living bacterium sequenced

    A collaboration of researchers, which includes scientists at the Virginia Bioinformatics Institute (VBI) and Virginia Tech, have completed the genome sequence of Azotobacter vinelandii, uncovering important genetic information that will contribute to a more complete understanding of the biology of this versatile, soil-living bacterium. The work will help advance research on A. vinelandii's role ...


    By ScienceDaily

  • Landfill cover soil methane oxidation underestimated

    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 ...


    By ScienceDaily

  • Scientists turn oily soil into productive ground

    Scientists are cleaning soil contaminated by oil spills in a way that saves energy and reclaims the soil's productivity, using a process known as pyrolysis, which involves heating contaminated soils in the absence of oxygen. They use a process known as pyrolysis, which involves heating contaminated soils in the absence of oxygen. This approach is much better for the environment than standard ...


    By Rice University

  • Solvay hails French soil remediation conference a success

    The 'Focused remedies for a well-managed remediation' conference was held in the Soda Ash plant at Dombasle, in which the Solution Unit Soil Remediation played an important role. Organised by SFGP, the French Society of Process Engineering,  GISFI, the French Scientific Interest Group, Industrial Brownfields, and CAPEMM, the Meurthe and Mosel Development Agency, its objectives were to promote ...


  • Basin wetlands checked for acid sulfate soils

    More than 1000 wetlands throughout the Murray-Darling Basin are being assessed to determine the risk posed to them by acid sulfate soils, the Murray-Darling Basin Commission (MDBC) announced today. Chief Executive Dr Wendy Craik AM said the MDBC was funding the project which is being carried out by State agencies, the Murray-Darling Freshwater Research Centre, CSIRO, Southern Cross University and ...


    By Australian Government

  • Shifts in soil bacteria linked to wetland restoration success

    A new study led by Duke University researchers finds that restoring degraded wetlands -- especially those that had been converted into farm fields -- actually decreases their soil bacterial diversity. But that’s a good thing, say the study’s authors, because it marks a return to the wetland soils’ natural conditions.“It sounds counter-intuitive, but our study shows that in restored wetlands, ...


    By Duke University

  • Biogenie Inaugurates a Soil Treatment Facility in Yellowknife

    Yellowknife, October 11, 2006 – Biogenie, a company which is specialized in the remediation of contaminated sites, recently inaugurated a contaminated Soil Treatment Facility (STF) on the premises of Yellowknife’s municipal landfill site. Built under a partnership approach with the City of Yellowknife, the STF will improve the contaminated soil management practices at the landfill site while ...

  • Gas sensors `see` through soil to analyze microbial interactions

    Rice University researchers have developed gas biosensors to “see” into soil and allow them to follow the behavior of the microbial communities within. In a study in the American Chemical Society’s journal Environmental Science and Technology, the Rice team described using genetically engineered bacteria that release ...


    By Rice University

  • Changing climate may lead to devastating loss of phosphorus from soil

    Crop growth, drinking water and recreational water sports could all be adversely affected if predicted changes in rainfall patterns over the coming years prove true, according to research published in April in Biology and Fertility of Soils. Scientists from Biotechnology and Biological Sciences Research Council (BBSRC)-funded North Wyke Research have found for the first time that the rate at ...


    By ScienceDaily

  • Soil-Therm now offering Remediation Monitoring and Control (ReMAC)

    SOIL-THERM now offers the biggest advancement in environmental equipment ever! Our ReMAC technology allows Soil-Therm equipment operators huge advantages over all other equipment. Monitor all operation of the system, extract logged data anytime, make adjustments to optimize operation, diagnose and troubleshoot system operation before getting ...


    By Soil-Therm Equipment, Inc.

  • EC hosts high-level conference on soil and climate change

    The European Commission this week hosted a high-level conference on the relationship between soil and climate change, and the role of soil management in climate change mitigation and adaptation. Organic matter plays a fundamental role supporting soil fertility, retaining water, sustaining biodiversity and regulating the global carbon cycle. But organic matter is in decline, and the conference ...

  • China Outlines Environmental Action in ‘War’ on Air, Water and Soil Pollution

    China's Premier Li Keqiang pledged that the country would take stronger measures over the coming year to reduce and control air, water and soil pollution, speaking in his annual address at the opening of the National People's Congress (NPC) meetings in Beijing. Li said China would “declare war” on pollution, and would raise energy efficiency, reduce vehicle emissions and prevent and ...


    By Bloomberg BNA

  • Regenesis Oxygen Release Compound (ORC) facilitates cost-effective contaminated site closure at 29 major petroleum company sites in Midwest

    Using the enhanced in-situ bioremediation technology Oxygen Release Compound (ORC®) and targeted contaminant source removal, remediation professionals restored and secured regulatory closure for 29 petroleum- contaminated sites across Indiana at an estimated cost saving of $75,000-$900,000 per site. The cleanups used an innovative and increasingly popular site closure strategy designed to achieve ...


    By REGENESIS

  • Ethiopia`s climate 27 million years ago had higher rainfall, warmer soil

    Thirty million years ago, before Ethiopia's mountainous highlands split and the Great Rift Valley formed, the tropical zone had warmer soil temperatures, higher rainfall and different atmospheric circulation patterns than it does today, according to new research of fossil soils found in the central African nation. Neil J. Tabor, associate professor of Earth Sciences at SMU and an expert in ...


    By ScienceDaily

  • Specialists remove hazardous toxins from one of the most contaminated soil & groundwater sites in US

    The U.S. Environmental Protection Agency and Shell Oil Company have removed more than 23,000 pounds of hazardous toxins from the Del Amo Superfund Site Waste Pits near Torrance, Calif. With EPA oversight, responsible parties Shell Oil Company and the U.S. General Services Administration built a soil vapor extraction system at the Del Amo Waste Pits and have been successfully operating it for one ...

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