highly contaminated soil Articles

  • New Contaminated Soil Legislation in Spain

    Untitled Document MediTerra Consultors Ambientals, S.L. is an independent company which activity is oriented to the investigation and remediation of contaminated soils and groundwater ...

  • Properties and Behavior of Inorganics in Contaminated Soil

    Often, specific technologies may be ruled out, or the list of potential technologies may be immediately narrowed, on the basis of the presence or absence of one or more of the chemical groups. The relative amounts of each may tend to favor certain technologies. Metals may be found in the elemental form, but more often they are found as salts mixed in the soil. At the present time, treatment ...

  • Asbestos contaminated soil case study

    An active gypsum manufacturing facility discovered they had a large area of gypsum waste containing asbestos mixed with soil at the back of their property. The waste had accumulated over the years before the dangers of asbestos were known and now required remediation due to communication wires buried in the waste. Excavators could not be used due to the presence of the communication wires that ...


    By Enviro-Vac Corp.

  • New contaminated soil legislation in Spain

    MediTerra Consultors Ambientals, S.L. is an independent company which activity is oriented to the investigation and remediation of contaminated soils and groundwater and the performance of Environmental Audits and Due Diligences. From our experience, soil is one of the most sensitive and vulnerable contamination receptors in Spain and the growing number of contaminated sites is jeopardizing both ...

  • Surfactants enhanced recovery of endosulfan from contaminated soils

    Soil pollution due to hydrophobic organic compounds is a wide environmental problem. Extensive use of endosulfan in cotton and paddy to meet the needs of the growing population has led to contamination of soil and other ecosystems. Endosulfan is hydrophobic, highly toxic to aquatic and human population and persists in soil for more than a year. To overcome the problem of hydrophobicity and ...

  • Cryogenic Treatment Unit (TU-51) Technology for Recovery of VOCs from Highly Contaminated Environment

    A Cryogenic Treatment Unit or TU-51 Technology was developed to apply a cryogenic air treatment process to recover persistent vapor phase volatile organic compounds (VPVOCs) having extremely low boiling points.  These would include explosive compounds present in the vapor ...


    By IWA Publishing

  • Copper tolerance and genetic diversity of Porcellionides sexfasciatus (ISOPODA) in a highly contaminated mine habitat

    Organisms inhabiting metal‐contaminated areas may develop metal tolerance, with either phenotypic adjustments or genetic changes (adaptation) or with both. In the present study, three populations of the terrestrial isopod Porcellionides sexfasciatus, collected at an abandoned mine area, were compared to assess the effects of metal contamination on tolerance to lethal and sublethal levels of ...


    By John Wiley & Sons, Ltd.

  • University of Southampton, Heavy Metal Contamination in Soils– Case Study

    Project Highlights Over the last 15 years, Envirochem have for-filled the role of environmental consultant analysts to the University of Southampton. During a period of significant redevelopment, Envirochem has assisted with a whole range of projects supplying an exhaustive range of asbestos related services, chemical sampling and ...

  • Spatial interpolation of cadmium contamination of agricultural soils in Changhua County, Taiwan

    A robust spatial model to interpolate topsoil cadmium concentrations monitored by Taiwan EPA was constructed for assessment of health risks posed by this contamination in Changhua County, Taiwan. kriging methods, using a Geographic Information Systems (GIS), were used to estimate the range and severity of topsoil contamination. Optimised Kriging models and geostatistical analyses revealed that ...


    By Inderscience Publishers

  • Polycyclic aromatic hydrocarbons in Niger Delta soil: contamination sources and profiles

    Abstract The distribution and sources of PAHs in soil as well as PAHs profiles have been investigated in areas with anthropogenic pollution in the Niger Delta (Nigeria) such as Warri and Ughelli. PAHs were identified in 21 soil samples (0- 10cm upper layer) collected in May, 2003. The typical total PAHs level in Niger Delta soil ranged from 182 ± 112 – to - 433 ±256 ìg/kg dw. PAH ...

  • Multifunctional Well Implemented for In Situ Remediation of Hydrocarbon Contaminations in Soil and Groundwater

    Abstract A recently developed Multifunctional Well has been implemented for the remediation of subsurface contamination caused by hydrocarbon spills. Four different remediation processes can be operated within the same well. At optimal efficiency of each remediation process, successive treatment of the capillary fringes, the vadose zone, and the aquifer can be accomplished. Each treatment ...


  • Soil Fracturing

    Introduction Fracturing is an enhancement technology designed to increase the efficiency of other in situ technologies in difficult soil conditions. The fracturing extends and enlarges existing fissures and introduces new fractures, primarily in the horizontal direction. When fracturing has been completed, the formation is then subjected to vapor extraction, either by applying a vacuum to all ...

  • Case study – BTEX contamination - Kentucky

    In 1992, remedial activities began at the Shively Service Center located in Radcliff, Kentucky. After the leaking underground storage tanks were removed from the site approximately 1,500 cubic yards of BTEX impacted soil was excavated and disposed off-site from the tank pits. Based on the review of historical sampling activities it was believed that the majority of the impacted soils were removed ...

  • Soil Vapor Extraction (In Situ)

    Introduction Soil vapor extraction (SVE) is an in situ unsaturated (vadose) zone soil remediation technology in which a vacuum is applied to the soil to induce the controlled flow of air and remove volatile and some semivolatile contaminants from the soil. The gas leaving the soil may be treated to recover or destroy the contaminants, depending on local and state air discharge regulations. ...

  • One of Europe’s most contaminated sites

    VSD Avenue, a joint venture partnership between VolkerStevin, DEC and Sita Remediation, started work at the beginning of September on the remediation of the former Avenue Coking Works in Chesterfield; one of the most heavily contaminated sites in Europe. Guy Pomphrey, chairman of VSD Avenue, explains The £82m contract, signed in July, was commissioned by the client and site owner the East ...


    By Newzeye Ltd

  • Deadly Hexavalent Chromium in Soil

    Merging technologies will change over Hexavalent Chromium in soil to Trivalent Chromium, effectively stopping Hexavalent Chromium from becoming dangerously airborne or becoming even more deadly by migrating into the water table. There are three valences of Chromium: 1) Chromium—safe to humans, 2) Trivalent Chromium—safe and an essential element in humans and 3) Hexavalent ...


    By ABCOV Companies

  • Cadmium in soil-plant systems: an overview

    High concentrations of cadmium in soils represent a potential threat to human health because it is incorporated in the food chain mainly by plant uptake. The behaviour of cadmium in soils depends on several factors related to both soil and plant characteristics. This paper provides an overview of such factors as well as of the most environmentally friendly in situ soil remediation techniques in ...


    By Inderscience Publishers

  • Thermally Enhanced Soil Vapor Extraction

    Introduction Thermally enhanced SVE is a full-scale technology that uses electrical resistance/electromagnetic/fiber optic/radio frequency heating or hot-air/steam injection to increase the volatilization rate of semi-volatiles and facilitate extraction. Thermally enhanced SVE is normally a short- to medium-term technology. Electrical Resistance Heating Electrical resistance heating uses ...

  • Environmentally Friendly Elimination of the World`s Contaminants

    About UltraZymeUltraZyme is a highly concentrated, proprietary blend of selected natural micro-organisms, essential nutrients, and synergists which help degrade the high concentrations of fat, grease, oil, blood, floating matter, and organic matter found in processing wastes from a number of sources. Possible applications include meat plants, (poultry, fish, beef, pork, etc.) oil spills, ...


    By Cypher Environmental Ltd.

  • Soil Vapor Extraction (Ex Situ)

    Introduction: Ex situ soil vapor extraction (SVE) is a full-scale technology in which soil is excavated and placed over a network of aboveground piping to which a vacuum is applied to encourage volatilization of organics. Soil piles are generally covered with a geomembrane to prevent volatile emissions and to prevent the soil from becoming saturated by precipitation. The process includes a ...

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