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metal soil remediation Applications

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    Metal Stabilization

    In-situ geochemical fixation using a chemical reductant such as Remotox (calcium polysulfide) converts the soluble toxic metals into insoluble non-toxic compounds. Remotox has proven to be effective under a wide range of conditions. It is considered more stable and persistent than other reductants in subsurface environments, and is relatively safe to handle in the field and easy to apply.

    By Graus Chemicals, LLC based in Glendale, ARIZONA (USA).

  • Remedial Construction for Mining and Metals

    ENTACT is the industry leader in the management and treatment of heavy metal impacted soil, sludge, and debris. Approximately half of the projects we have completed over the past 21 years have involved metals. These projects have included soil and sediment removal, residential cleanups, smelter closures, earthwork/mine reclamation, and decontamination and demolition of mine and mill structures at both active and abandoned facilities. ENTACT holds seven patents related to treatment of heavy metal impacted materials.

    By ENTACT, LLC based in Grapevine, TEXAS (USA).

  • Active Refinery Remediation

    Waste Management Unit (WMU) closures at this active refinery Waste Management Unit (WMU) closures at this active refinery - Installation of several soil, Liquid Boot, and full multi-layer geocomposite cover systems in various facility locations- - Sensitive construction practices including large scale activities near power lines, 30 inch raw water line, and several active emergency flares - Completed performance based in-situ solidification/stabilization, cap and closure, using ENTACT owned large diameter auger Delmag rig and custom-fabricated Geodrill - COC`s include heavy metals, PAH, volatile organic compounds, and petroleum hydrocarbons Performance criteria include an unconfined compressive strength of 10 psi, permeability coefficient of less than 2.1x10-6 cm/sec, and an admixture pH of less than 11.5 - ENTACT performed in-house treatability analysis to develop reagent admixture

    By ENTACT, LLC based in Grapevine, TEXAS (USA).

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    Environmental testing & compliance screening for energy/environmental sector

    Compliance screening and testing is often carried out during the manufacturing phase of a product, and all the way through its disposal or recycling process. It ensures that products and materials meet specific standards or comply with international and local directives or regulations. These standards and regulations are introduced to ensure the quality and safety of a product, and to minimise or eliminate its negative impact on the environment and people. Examples of products or materials tested are: electrical and electronic equipment (for compliance with the Restriction of Hazardous Substances (RoHS) directive), waste oils, soil (soil remediation depending on contents of toxic metals), children’s products (for compliance with Consumer Product Safety Improvement Act of 2008), etc.

    By Oxford Instruments plc based in Abingdon, UNITED KINGDOM.

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