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Keywords: concentration
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Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-076
... metals concentrations. INTRODUCTION Cement-based solidification/stabilization technique offers two main advantages that can help to overcome contaminated dredged material problems: First, the technique improves the physical and mechanical characteristics of the treated sediment, second...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-091
... been made to examine the concentration level of contaminants present in the marine sediments collected at Changi coast. Test results indicated low concentrations of metals, and they are within the permissible limits. X-ray diffraction (XRD) and Scanning electron microscopy (SEM) techniques have been...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-156
... were carried out on compacted specimens, and solutions of each metal, with concentration of 100 mg/L and pH values of 1 and 4. Adsorption batch-tests were carried out with solutions of each metal, with concentrations of 1, 10 and 100 mg/L at pH 1. Results show that diffusion may be an important...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-096
... is the electronic charge (C), k is the Boltzmann constant (J/K), T is the absolute temperature (K), n is the ion concentration of pore water (number/m3), is the static permittivity of pore water, S is the specific surface (m2/g) of bentonite, Sm is the specific surface of montmorillonite minerals, Snm...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-126
... of its negative effect. One of such methods is usage of artificial geochemical barriers. The concept "technogenic geochemical barrier" is introduced by A. Perelman in 1976 for a zone where there is a sharp reduction of technogenic migration and, consequently a concentration of elements (Perelman, 1989...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-086
... velocity heavy metal land reclamation numerical simulation anode ionized heavy metal aquifer purge water reaction operational variable cathode remediation concentration mathematical model pore water electrokinetic remediation equation electrode ELECTROMIGRATION OF HEAVY METALS IN PORE...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-137
... is the equilibrium concentration of the solute (mg/l). (Fetter 1993). The distribution coefficient represents the partitioning of the compound between the liquid and solid. (Freeze and Cherry 1979). Activated carbon was found to have K d values in the order of 20L/kg, for most analytes tested. Coke breeze was found...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-027
... and also minimize the need for landfilling. Utilization of wastes as construction or geotechnical material has been strongly recommended, and many attempts of geotechnical applications have been undertaken. solid waste management water management concentration strength Upstream Oil & Gas...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-157
... grains of valuable minerals are then separated from the waste by flotation. This process produces concentrates of zinc, lead and copper. The residual waste, referred to as tailings, is deposited in an impoundment, the tailings pond. THE TAILINGS POND The tailings pond is near rectangular in shape (2 km...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-162
... a good foundation for a waste landfill (Figure 2 ). To study the concentration of each parameter with depth and with the permeability and grain size of the soil, a series of tests was performed involving samples of soil (a silty sand and a clayey silt) and leachates collected inside the area of the waste...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-077
... coefficient reservoir Artificial Intelligence Sodium inorganic salt diffusion concentration clay plug cellulose acetate membrane osmotic suction diffusion coefficient sorption equation DIFFUSION OF INORGANIC SALT THROUGH OSMOTIC MEMBRANES Christian Jungnickel1 and David Smith2 ABSTRACT...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-142
... ground according to a national guideline. Upstream Oil & Gas borehole pipe knowledge management TCE extraction investigation remediation concentration tce contamination factory site environmental standard value takenaka corporation land reclamation soil vapor extraction site...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-112
... 1960''s. Soils and groundwater exposed to the variety of chemicals and chemical wastes are frequently and heavily contaminated and difficult to be treated and recovered back to normal conditions. Laboratory experiments were performed on soils with low concentrations of contaminants, which are the most...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-158
... with a pH and total metals concentration of 2.32 and 169.05 mg/L, respectively. Bagasse was subsequently immersed in AMD filtrate at AMD:bagasse ratios ranging from 5:1 to 20:1. Using microcosms, four combinations of treatments were considered using the aforementioned AMD:bagasse ratios; pure bagasse...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-097
... in soil provokes the sorption of some ions like K+, Na+ and the desorption of some others like Ca++. It is observed that the soil reduces the leachate solute concentration. TDR measures enabled to determine soil electrical conductivity. It was observed that during leachate migration in the soil layers...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-087
... column system, where constant head conditions are applied at both ends and constant concentrations for both the chemical reagent and the contaminant at the bottom, as shown in the following Figure. As the process of the contaminant removal advances, the porosity at the middle of the column changes from...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-148
...MASS TRANSFER RATES FOR AUSTRALIAN LANDFILLS Swarbrick G.1 and Valsky A.2 ABSTRACT Landfill disposal creates a repository of elements at significantly elevated levels. Entropy dictates that elements at elevated concentrations will be emitted into the surrounding environment. Most regulatory...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-003
... Engineering concentration Situ Remediation USA Compound hydraulic conductivity hydrocarbon ground water land reclamation contaminant Virginia ASCE contamination remediation technology contaminated land slurry wall permeability GEOENVIRONMENTAL ENGINEERING FOR IN SITU REMEDIATION Charles D...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-139
... with explosive chemical manufacturing have impacted upon the potential uses of the land with elevated concentrations of a broad range of contaminants remaining within the soil in some areas. remediation information characterisation excavation concentration land reclamation assessment on-site...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-113
... absorption property Upstream Oil & Gas concentration diffusion laboratory test clay mineral content Diatom earth contaminant absorption ratio exchange capacity kyushu regional soil synthetic contaminant cation concentration APPROACH TO THE CONTAMINANT ABSORPTION PROPERTIES OF THE KYUSHU...

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