soil respiration Articles

  • Influence of vermicompost on the physico-chemical and biological properties in different types of soil along with yield and quality of the pulse crop–blackgram

    Long-term application of inorganic fertilizers like high doses of ammonium sulfate and sulfur coated urea has led to soil acidification (Ma et al., 1990), decrease in soil aggregate stability (Estevez et al., 1996) decrease in soil respiration (Sharma 2003), pollution of underground water and decrease in earthworm populations (Edwards and Bohlen 1996). Vermicompost has been shown to have high ...


    By University of Tehran

  • Microbial community structure and functioning along metal pollution gradients

    Toxic effects of heavy metals on soil microorganisms have been confirmed in a number of laboratory studies. However, most real‐field studies do not allow for strong general conclusions due to a range of problems, such as pseudoreplication and confounding factors, which are almost impossible to control for with the most commonly used polluted‐vs.‐unpolluted or random sampling designs. Effects ...


    By John Wiley & Sons, Ltd.

  • Bioventing

    Introduction Bioventing is a promising new technology that stimulates the natural in situ biodegradation of any aerobically degradable compounds in soil by providing oxygen to existing soil microorganisms. In contrast to soil vapor vacuum extraction, bioventing uses low air flow rates to provide only enough oxygen to sustain microbial activity. Oxygen is most commonly supplied through direct air ...

  • Microbiology: The Key to Wastewater treatment case study

    The biological treatment of wastewater relies mainly on a consortium of heterotrophic and autotrophic bacteria. The fecal bacteria that are constantly introduced into the collection system are not the optimal bacteria for degrading the contaminants present in wastewaters. The soil bacteria that are introduced through inflow and infiltration are more effective at degrading the wastes and can ...

  • Regional Patterns in Carbon Cycling Across the Great Plains of North America

    The large organic carbon (C) pools found in noncultivated grassland soils suggest that historically these ecosystems have had high rates of C sequestration. Changes in the soil C pool over time are a function of alterations in C input and output rates. Across the Great Plains and at individual sites through time, inputs of C (via aboveground production) are correlated with precipitation, however, ...


    By Springer

  • Co–composting as a management strategy to reuse the white–rot fungus Trametes versicolor after its use in a biotechnological process

    White–rot fungi are extensively used in biotechnological processes but little is known about the disposal of fungal biomass after its use. Final products stability parameters (self–heating test and respiration index) indicate that co–composting of the white–rot fungus Trametes versicolor with Organic Fraction of Municipal Solid Wastes (OFMSW) ensure a higher stable final ...


    By Inderscience Publishers

  • Terrestrial sequestration

    Trees play a key role in the environment's natural landscape due to their ability to prevent erosion. The Spanish Government says it will plant 45 million trees over the next four years to counter desertification caused by global warming. The massive tree–planting scheme aims to reduce the amount of carbon dioxide (CO2) in the atmosphere, the cause of global warming. It estimates that in the long ...


    By Erosion Control Forum

  • Risk assessment and brownfields-determining exposure to site contaminants

    The USEPA’s Brownfields Program was developed to facilitate the rehabilitation of contaminated property for re-development. EPA has set forth criteria that must be met for a revitalized property to be used for residential, commercial or industrial purposes. The main thrust of these criteria is the long-term protection of residents or visitors (including shoppers and business employees). As ...

  • Transcriptional responses in Enchytraeus albidus (Oligochaeta): Comparison between cadmium and zinc exposure and linkage to reproduction effects

    Metal ecotoxicity to soil organisms, for example, in enchytraeids (also known as potworms), has been addressed mainly by assessing effects on survival and reproduction, but very little is known about the underlying molecular mechanisms of responses. The main purpose of the present study was to assess and compare the transcriptional responses of Enchytraeus albidus to an essential (Zn) and a ...


    By John Wiley & Sons, Ltd.

  • Hired metals analyser ensures remediation success

    Cognition Land and Water Ltd, a UK based remediation specialist, has hired a portable XRF metals analyser to improve the speed of remediation work at a project in London’s Kentish Town. The project had a major impact on local residents so timescales were extremely tight but Cognition’s Charlie Jarvis says “It would not have been possible to meet the deadline without the use of ...


    By Ashtead Technology Ltd

  • Increased demand for XRF analyser hire

    Steve Drake, NDT Market Manager at Ashtead Technology believes that XRF is one of the most important technologies in the company’s fleet of NDT and environmental testing instruments. “With a small amount of training, almost anyone can implement detailed inspections in a wide variety of applications, and with most instruments being lightweight and robust, XRF analysers are among the ...


    By Ashtead Technology Ltd

  • Effect of high solids concentration on hydrodynamics and mass transfer of a three-phase airlift reactor for marine sediment bioremediation

    The more restrictive limits for environmental pollution control imposed nowadays require the development of new biological technologies. Multiphase reactors including slurry reactors have become reactors of choice for chemical and biochemical applications. In the present work, three-phase airlift reactors are proposed as an alternative to mechanically stirred systems and slurry bubble columns for ...


    By ORBIT e.V.

  • The advantages and benefits of aerobic cometabolism

    Aerobic metabolism yields the energy-transferring molecule TPA at a much higher rate than anaerobic metabolism. The higher energy yield produces a greater viable population. The oxygenase enzymes involved in the cometabolism of chlorinated solvents are not induced by the presence of contaminants, so a high microbial population has a proportionately high yield of oxygenase enzymes. Aerobic ...


    By CL Solutions, LLC

  • Ecology of Sulfate-reducing bacteria in an Iron-dominated, mining-impacted freshwater sediment

    Received for publication October 31, 2007. A legacy of lead and silver mining in its headwaters left Lake Coeur d'Alene, Idaho with a sediment body that is highly reduced and contains up to 100 g kg–1 iron and a smaller fraction of chemically active sulfide phases. The dynamic character of these sulfides and their importance for the sequestering of contaminating trace elements prompted this study ...

  • Dust monitoring

    Generally, two different approaches are used to measure the amount of dust deposited on a surface; Determination of the soiling of a surface, by a change in its properties; Determination of the quantity of dust deposited, by weight. WHAT IS DUST? Dust is a generic term used to describe fine particles that are suspended in the atmosphere. Dust comes from a wide variety of sources, including soil, ...


    By Queensland Laboratory

  • Working safely around hazardous materials and contaminants

    The first step in working safely around hazardous materials should always be a hazard assessment review. The OSHA standard mandates companies must conduct a hazard assessment to identify the appropriate personal protective equipment (PPE) and properly train employees on how to use it. OSHA compliance officers will review written hazard assessments for completeness and accuracy. In the case of ...

  • Evaluating composting for contingency bases

    Technology is being evaluated to demonstrate a potentially viable supplement to waste incineration at Department of Defense bases that support operations of deployed units. To help address the solid waste management challenges at Department of Defense contingency bases overseas, the National Defense Center for Energy and Environment (NDCEE) is demonstrating an in-vessel composting ...


    By BioCycle Magazine

  • Case Study - Ice blast technology for nuclear decontamination

    Application: Customer has 150 gondola type rails cars used to transport contaminated soil/debris to it’s facility in the Tooele Hazardous Industry District. Customer requested CIB demonstrate/test the ice blast process effectiveness in removing contaminated soil/dirt/debris from interior steel surfaces of transport rails car. Customer requires the cleaning ...


    By Coulson Ice Blast

  • Combining HVME and Enhanced Bioremediation for Gasoline Contamination in Groundwater

    A leaking underground storage tank at a commercial petroleum retail site located in Haskell, Texas resulted in soil and groundwater petroleum hydrocarbon contamination. This contamination, including benzene, toluene, ethylbenzene, and total xylenes (BTEX) and total petroleum hydrocarbons (TPH) migrated down-gradient below a road and neighboring property. Access below the adjacent roadway was ...


    By Regenesis

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