bentonite slurry Articles

  • Characteristics of a Bentonite Slurry as a Sealant

    Many of the technologies that relate to groundwater use bentonite slurries. The results of a laboratory investigation aimed at determining the characteristics of a bentonite slurry as a sealant are presented herein. Slurry indicator tests were used to determine the physical characteristics of the slurry, and performance tests, such as hydraulic conductivity and model tests, were conducted to ...


    By ASTM International

  • Determining Bentonite Content in Soil-Bentonite Mixtures Using Electrical Conductivity

    A procedure based on electrical conductivity is described for measuring bentonite content in soil-bentonite mixtures having a wide range of bentonite contents. Standard equipment used for sedimentation analysis and an electrical conductivity meter are required. The procedure employs calibration curves relating electrical conductivity and bentonite concentration for soil-bentonite-water slurries. ...


    By ASTM International

  • Permeability and Compressibility Behavior of Bentonite-Sand/Soil Mixes

    As a seepage barrier, slurry trench material should have a relatively low coefficient of permeability, in the range of 10-7 cm/s, and at the same time should be compatible with surrounding material with regard to compressibility. Although bentonite-sand/soil mixes are used widely, there is no specific engineering approach to proportion these mixes that satisfies the above practical requirements. ...


    By ASTM International

  • Why Bentonite Hurts Well Production: The Case for Biopolymer Drilling Fluid

    Bentonite is a naturally-occurring clay material, largely composed of the mineral, sodium mont-morillonite. The dominant property of bentonite is that it swells to many times its dry volume when hydrated by water, forming a viscous fluid with high gel strength. This makes bentonite an excellent product when used as a sealant, for preventing the influx of surface water into a well, sealing ...

  • Installation of a deep drainage trench by the bio-polymer slurry drain technique

    Introduction An underground diesel fuel spill at a county bus maintenance facility in San Jose, California was successfully remediated by constructing a pair of 50 feet deep, gravel-filled extraction trenches. Well casings with ejector pumps were set into the trenches for withdrawing the diesel fuel contaminated groundwater to a small, onsite treatment plant. Severe access restraints, the ...


    By Geo-Con, Inc.

  • Remediation of Oil Refinery Sludge Basin

    Abstract Work was completed in early 1992 to clean up a 5.5 acre (2.2 ha) stormwater sludge basin for an oil refinery company. The basin, which had served as a stormwater collection and settling pond for over 40 years, contained oily sludges with high concentrations of certain metals and volatile organic compounds. The closure plan included a combination cement-bentonite slurry wall and jet ...


    By Geo-Con, Inc.

  • Cement industries solution to Waste Management - Remediation of oil refinery sludge basin

    Abstract Work was completed in early 1992 to clean up a 5.5 acre (2.2 ha) stormwater sludge basin for an oil refinery company. The basin, which had served as a stormwater collection and settling pond for over 40 years, contained oily sludges with high concentrations of certain metals and volatile organic compounds. The closure plan included a combination cement-bentonite slurry wall and jet ...


    By Geo-Con, Inc.

  • Clay Lumps under Simulated Hydraulic Transport Conditions

    Laboratory experiments with compacted kaolinite-bentonite mixtures indicate that degradation of hydraulically transported clay lumps in a dredge pipeline can be predicted and controlled to some extent. The size reduction of these lumps depends not only on the length of the pipeline but also on the density of the clay being dredged, the plasticity index (PI) of the clay, and the velocity of the ...


    By ASTM International

  • Case study - drilling operations

    Location: New Zeland Year: 2010 Working contest The pond is on a drilling rig site. The rig is used for Geo-thermal power exploration. The Problem Pumping heavy slurry: bentonite, geo-thermal minerals, drilling fluid, sand, pumice. Performance of sucker trucks where unsatisfactory. Our ...


    By Dragflow S.r.l.

  • Case study - drilling operations

    Location: New Zeland Year: 2010 Working contest The pond is on a drilling rig site. The rig is used for Geo-thermal power exploration. The Problem Pumping heavy slurry: bentonite, geo-thermal minerals, drilling fluid, sand, pumice. Performance of sucker trucks where unsatisfactory. ...


    By Dragflow North America

  • Analysis of Hydraulic Gradient Effects for Laboratory Hydraulic Conductivity Testing

    A theoretical model is presented that characterizes the effect of hydraulic gradient on measured hydraulic conductivity in the laboratory. A closed-form equation is derived for the distribution of total head within a hydraulic conductivity test specimen as a function of specimen height, boundary stress conditions, compression index, and change of hydraulic conductivity index. From this ...


    By ASTM International

  • GCL serves as cap in brownfield remediation site

    PROJECT: Patterson Plank Road Brownfield Remediation LOCATION: Patterson, New Jersey PRODUCTS: BENTOMAT® SDN BACKGROUND: This New Jersey brownfield was formerly the site of a chemical recycling facility. CHALLENGE: The soil at the site was heavily contaminated, and off-site removal would have ...

  • DNAPL Remediation at Camp Lejeune Using ZVI-Clay Soil Mixing

    Site 88 at Camp Lejeune, NC is the former Base dry cleaners. Historical activities have resulted in a release of dry cleaning solvents especially perchloroethene (PCE). A 10,000 square foot source area was delineated using membrane interface probe (MIP) technology, and soil and groundwater sampling. The contamination extended from the water table (roughly 7 feet below ground surface (bgs)) down ...


    By CH2M Hill Companies, Ltd.

  • Standard Chlorine of Delaware Remediation

    By designing a 70-foot deep barrier wall, Black & Veatch was able to cut off contaminant source areas from a creek near New Castle, Delaware. The groundwater treatment system that Black & Veatch designed prevents site contamination from reaching the underlying drinking water aquifer. The Standard Chlorine of Delaware Site is a 65 acre area including an abandoned chlorobenzene ...


    By Black & Veatch Corporation

  • World War II Memorial, DC - Case Study

    In 2003, AdEdge Water Technologies began working closely with EarthTech, the assigned engineering firm responsible for specifying and selecting the various water treatment systems serving the new National World War II Monument in Washington, DC. Stormwater and groundwater control and treatment are essential aspects of this project given the location of the site on the Mall adjacent to the ...

  • Dredging Abrasive Materials? Learn about SRS Crisafulli’s New Dredge

    The Rotomite-6000-C, SRS Crisafulli’s newest self-propelled dredge, broadens the Rotomite-6000’s capabilities to include removal of highly abrasive materials. The Rotomite-6000-C also increases the customer’s return on investment (ROI) by cutting sludge ...


    By SRS Crisafulli, Inc.

  • Excavation, Retrieval, and Off-Site Disposal

    Introduction: Contaminated material is removed and transported to permitted off-site treatment and/or disposal facilities. Some pretreatment of the contaminated media usually is required in order to meet land disposal restrictions. Confined disposal facilities (CDFs) are engineered structure enclosed by dikes and designed to retain dredged materials. A CDF may have a large cell for ...

  • Wind-driven SVE system extracts VOCs from landfill

    An innovative soil vapor extraction (SVE) system has operated at the former Ferdula Landfill site in Frankfort, NY, for the past 10 years. The system relies on wind-driven vacuum processes rather than electrically powered air blowers to extract volatile organic compounds (VOCs) from the landfill. After a two-year trial beginning in 1998, the New York State Department of Environmental Conservation ...

  • World War II Memorial, DC Iron & Manganese Reduction - Case Study

    In 2003, AdEdge Water Technologies began working closely with EarthTech , the assigned engineering firm responsible for specifying and selecting the various water treatment systems serving the new National World War II Monument in Washington, DC. Stormwater and groundwater control and treatment are essential aspects of this project given the location of the site on the Mall adjacent to the ...

  • Companies and people leading the restructured environmental services industry in Canada

    The landscape of environmental service providers in Canada has changed dramatically in the past four or five years, especially with mergers and acquisitions announced in recent months between some fast-growing businesses. Only a decade ago the industry was dominated by a couple of publicly-traded continental companies that gobbled up numerous small and medium-size enterprises to offer customers a ...

Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you