Case Study of Steady Oxygen Concentration Gradients in a Groundwater Plume from a Highway Infiltration Basin

2009 ◽  
Vol 135 (11) ◽  
pp. 1237-1243 ◽  
Author(s):  
David W. Ostendorf ◽  
Chul Park ◽  
Camelia Rotaru ◽  
Marina S. Pereira
Keyword(s):  
Oxygen Concentration ◽  
Concentration Gradients ◽  
Infiltration Basin

Oxygen-Enriched Combustion Characteristics of Lignite: A Case Study of the Pingzhuang Lignite from Inner Mongolia, China

2012 ◽  
Vol 550-553 ◽  
pp. 2868-2872
Author(s):  
Xiang Yun Chen ◽  
Yong Feng Zhang ◽  
Qian Cheng Zhang ◽  
Jie Bai ◽  
Fei Wu
Keyword(s):  
Particle Size ◽  
Oxygen Concentration ◽  
Volume Fraction ◽  
Particle Sizes ◽  
Temperature Zone ◽  
Thermogravimetric Method ◽  
Combustion Experiment ◽  
Lower Temperature ◽  
Lower Temperature Zone

Combustion curves of lignite samples from China in four different particle sizes and Oxygen-enriched condition were analyzed using non-isothermal thermogravimetric method. The lignite samples separated into -150+100 μm, -100+75 μm, -75+50 μm, and -50μm sizes. Combustion profiles shift to lower temperature zone as particle size decrease. Combustion profiles have little difference when the particle size below 100 μm in oxygen atmosphere; Oxygen-enriched combustion experiment were carried out in O2/N2 mixture atmospheres with the volume fraction of oxygen was 21%, 30%, 40%, 50%, 60% and 70%, respectively. As oxygen concentration increase profiles shift to lower temperature zone. and gets the proper range of oxygen concentration is about 50%.

The purification performance of infiltration basins fitted with pretreatment facilities: a case study

2001 ◽  
Vol 43 (5) ◽  
pp. 119-128 ◽  
Author(s):  
J. P. Bardin ◽  
A. Gautier ◽  
S. Barraud ◽  
B. Chocat
Keyword(s):  
Underground Water ◽  
Experimental Protocol ◽  
Infiltration Basin ◽  
Aquifer Systems ◽  
Pollution Removal ◽  
One Year ◽  
Rhone Valley ◽  
Stormwater Infiltration ◽  
The Impact

In the south-east of France, the evacuation of stormwater by infiltration into the ground is being developed for large aquifer systems such as the ground water in the Rhône valley and in the eastern part of Lyons. A study proposal has been presented to the water management department of the conurbation of Lyons, aimed at quantifying, within a reasonably short space of time, the effects, in terms of transport of pollutants, of the stormwater infiltration system in the underground water in eastern Lyons. To this end, a one year duration experiment was carried out on the Vénissieux infiltration basin which drains stormwater from a 380 hectares industrial catchment area. Its peculiar configuration also made it possible to acquire new knowledge on the qualitative operation of a few pretreatment facilities. After describing the operation of the basin and the experimental protocol, we shall present a body of data that we monitored and our conclusions about the behaviour of the pollution throughout the facilities. Then, we present methods used to assess the pollution removal performance of the infiltration basin and its pretreatment devices, the results obtained, and our conclusions about the impact of the infiltration basin on groundwater and soil.

Oxygen concentration gradients in Y-Ba-Cu-O

1990 ◽  
Vol 164-165 ◽  
pp. 1172-1177
Author(s):  
Kjell Pernestål ◽  
Sveinn Olafsson ◽  
Roger Wäppling ◽  
Torsten Lundström
Keyword(s):  
Oxygen Concentration ◽  
Concentration Gradients

Measurement of oxygen concentration gradients in gel-immobilized recombinantEscherichia coli

1990 ◽  
Vol 33 (6) ◽  
pp. 611-618 ◽  
Author(s):  
Christine M. Hooijmans ◽  
Catherine A. Briasco ◽  
Jun Huang ◽  
Bert G. M. Geraats ◽  
Jean-No�l Barbotin ◽  
...  
Keyword(s):  
Oxygen Concentration ◽  
Concentration Gradients
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