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Showing 1 to 20 of 123 for “"Bentonite"”.
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Sealing performance assessments of bentonite and bentonite/crushed rock plugs.
Bentonite and mixtures of bentonite and crushed rock are potential sealing materials for high level nuclear waste repositories. The materials have been used to form cap layers to reduce infiltration for mined waste tailings and can also be used to construct clay liners for municipal as well as …
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Protein-Intercalated Bentonite for Bio-composites
… This work investigated the potential use of bentonite clay for treatment of meat rendering waste water by adsorption and utilizing the spent bentonite for bioplastic fillers. Models were applied to predict the organic adsorption and the sedimentation of clay particles in solution. Various …
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A study of Bentonite ester clays
Thesis (M.S.) Massachusetts Institute of Technology. Dept. of Chemical Engineering, 1947.
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Engineering characteristics of compacted sand-bentonite mixtures
… are rarely available in the literature. Sodium bentonite can be added to Perth sandy soil as active clay in an appropriate amount to create a cost-effective liner/barrier material, especially for landfill applications. Bentonite has been used for such applications in other parts of the world. In …
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Mechanical Behavior of Soil-Bentonite Cutoff Walls
A soil-bentonite cutoff wall is a type of subsurface vertical barrier constructed by back-filling a trench with a mixture of soil, bentonite, and water. Although soil-bentonite cutoff walls are common, their mechanical behavior is not well understood. Current design procedures do not consider the …
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Geology of the Northern Black Hills Bentonite Mining District
Made available in DSpace on 2014-12-04T19:13:30Z (GMT). No. of bitstreams: 1 0011524.pdf: 15808717 bytes, checksum: 85d36250d88ab1e9c942b84b97ea1dae (MD5) Previous issue date: 1955
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Soil-Bentonite Cutoff Walls: Hydraulic Conductivity and Contaminant Transport
Soil-bentonite cutoff walls are commonly used to contain contaminants in the subsurface. A key property in determining the effectiveness of a cutoff wall is its hydraulic conductivity. There are important difficulties and uncertainties regarding the accuracy of commonly used methods of measuring …
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Coupled Hydro-Mechanical Modelling of Gas Migration in Saturated Bentonite
Bentonite is regarded as an ideal geomaterial for the engineering barrier system of a deep geological repository (DGR) where nuclear wastes are disposed, as it has several desirable properties for sealing the nuclear wastes, including low permeability, low diffusion coefficient, high adsorption …
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Investigating Bisulfide Sorption onto Bentonite through Laboratory Experiments and Numerical Modelling
… repository (DGR) relies significantly on bentonite clay, a crucial material in the engineered barrier system. One safety concern is microbiologically influenced corrosion of the used fuel containers (UFCs) which may occur if bisulfide (HS-) transports through the bentonite buffer to the …
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Spray coated bentonite/MWCNT composite enzymatic biosensor for uric acid detection
… acid (UA) biosensor based on a nanocomposite of bentonite (BT) and multi-walled carbon nanotubes (MWCNTs) fabricated via spray coating. The composite utilizes the high conductivity and surface area of MWCNTs along with the ion-exchange capacity and antifouling properties of BT to improve both …
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Electrooptic Birefringence Investigations of Adsorbed Water Properties Indilute Aqueous Bentonite Suspensions
Made available in DSpace on 2014-12-12T00:17:49Z (GMT). No. of bitstreams: 1 7219801.pdf: 2347967 bytes, checksum: 2eea569f85b3766a83bad11ec9d8ea8f (MD5) Previous issue date: 1972
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Considerations of mineralogy and permeability testing of selected Sand/Bentonite mixes
… and chemical performance of selected Sand/Bentonite mixes to be used in the context of an environmentally inert landfill liner. Numerous test series in the laboratory focused on the permeability as a consequence of the physio-chemical characteristics of the selected mixes of two South …
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Offering sodium bentonite and sodium bicarbonate free-choice to lactating dairy cattle
… the effects of free-choice intake of sodium bentonite and sodium bicarbonate on physiological and production parameters. Eight Jerseys and seventeen Holsteins (four fistulated) were randomly assigned to two groups to equalize stage of lactation, age and production history. Two diets were fed: …
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Remediation of contaminated marine sediment using bentonite, kaolin and sand as capping materials
… the effectiveness of using active materials; bentonite (B), kaolin (K), mixture of bentonite with kaolin (1:1) (BK) as capping materials to block the release of five heavy metals (Pb, Cr, Cu, Cd and Zn) from artificially polluted sediments. The effectiveness of B, K, and BK for preventing the …
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A study of chemical interactions between the Marcellus shale and attapulgite and bentonite clays
… between the Marcellus shale and attapulgite and bentonite clays. The aim of this project was to determine if there were particular elemental changes that could be directly associated with either an attapulgite or bentonite clay. In this study, samples from two wells in West Virginia were …
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Non-Game Bird habitat Associated With Haul Roads and Surface Mining for Bentonite Clay
A 2 year study was conducted to investigate possible differences in density and diversity of birds in relation to distance from mining haul roads and various aged mine spoils. Winter bird surveys and breeding bird counts were conducted during 1977 and 1978. Bird density and diversity were estimated …
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