Results 261 to 270 of about 1,071,876 (307)

Removal of trichloroethylene in reduced soil columns

Journal of Hazardous Materials, 2004
A continuous soil column experiment was conducted to investigate reductive dechlorination of trichloroethylene (TCE) in soil system reductively manipulated by three types of reductants (Fe(II), dithionite, and Fe(II) + dithionite (combined treatment of Fe(II) and dithionite)). The soil column reduced by Fe(II) + dithionite has the greatest bed volumes (
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Shear connection modelling for column removal analysis

Journal of Constructional Steel Research, 2016
Abstract Although methods for modelling steel shear connections under column removal scenarios are available in widely-used design guidelines, they tend to be based on earthquake engineering research rather than research examining scenarios relevant to progressive collapse. Even where these have been adapted explicitly for this new purpose, they take
Steven A. Oosterhof, Robert G. Driver
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Arsenate removal from water using sand–red mud columns

Water Research, 2005
This study describes experiments in which sorption filters, filled with chemically modified red mud (Bauxsol) or activated Bauxsol (AB) coated sand, are used to remove As(V) (arsenate) from water. Bauxsol-coated sand (BCS) and AB-coated sand (ABCS) are prepared by mixing Bauxsol or AB with wet sand and drying.
Genç-Fuhrman, Hülya, Bregnhøja, Henrik, McConchie, David M   +2 more
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Testing and Analysis of Steel Beam-Column Assemblies under Column Removal Scenarios

Structures Congress 2009, 2009
This paper presents an experimental and analytical assessment of the performance of steel beam-column assemblies with two types of moment-resisting connections under vertical displacement of a center column, simulating a column removal scenario. The connections considered include (1) a welded, unreinforced flange, bolted web connection and (2) a ...
Fahim Sadek, Joseph A. Main, H. S. Lew, Stephen D. Robert, Vincent Chiarito   +4 more
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Use of granular slag columns for lead removal

Water Research, 2002
The use of granular blast furnace slag (GBFS)-packed columns to treat lead-containing solutions has been investigated. The results obtained indicated that the slag usage rate decreased with increasing flow velocity, particle size, initial lead concentration and decreasing with bed height.
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Mesoporous Mineral Columns for Color Removal from Aqueous Solutions

Journal of Environmental Science and Health, Part A, 2004
The removal efficiency of natural minerals (e.g., zeolite and sepiolite) from aqueous solutions of azo dyes was investigated. The adsorption of three types of reactive dyes, Black, Red, and Yellow dissolved in distilled and/or deionized water on zeolite and sepiolite have been performed using column adsorption experiments. Distilled water containing 50
M, Turan, B, Armağan, O, Ozdemir, M S, Celik   +3 more
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Charcoal-column Haemoperfusion does not Significantly Enhance Chlormethiazole Removal

Human Toxicology, 1986
A 26-year-old man had convulsions after taking an overdose of slow-release aminophylline tablets. The convulsions were treated with an infusion of chlormethiazole and theophylline was removed by charcoal-column haemoperfusion. It has been suggested that haemoperfusion might be useful for removing chlormethiazole and this was investigated. There was no
R E, Ferner, A, Pottage, D W, Ryan, D N, Bateman   +3 more
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Experimental investigation of beam-to-tubular column moment connections under column removal scenario

Journal of Constructional Steel Research, 2013
Abstract Removal of a column member is a typical scenario of local failure that could trigger the progressive collapse of a frame structure. Under such a situation, the behavior of the beam-to-column connection is expected to greatly influence the structural capacity in resisting progressive collapse.
Ling Li, Wei Wang, Yiyi Chen, Yong Lu
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Removing Trihalomethanes by Packed‐Column and Diffused Aeration

Journal AWWA, 1986
The performance of packed‐column and diffused aeration for removing trihalomethanes from drinking water was related to water source, water temperature, contaminant concentration, and other process variables. Data obtained from this study were compared with theoretical predictions and with the results of previous feasibility studies. Based on efficiency
Louis J. Bilello, J. Edward Singley
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Column Studies on Nitrate Removal from Potable Water

Water, Air, and Soil Pollution, 2003
Biological processes can achieve nitrate removal from groundwater. The sulfur/limestone autotrophic denitrification by Thiobacillus denitrificans was evaluated with three laboratory-scale column reactors. The optimum sulfur/limestone ratio was determined to be 2:1 (mass/mass).
A. Darbi, T. Viraraghavan, R. Butler, D. Corkal   +3 more
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