Removal of uranium from contaminated groundwater using monorhamnolipids and ion flotation

2022 ◽  
Vol 301 ◽  
pp. 113835
Author(s):  
David E. Hogan ◽  
Ryan M. Stolley ◽  
Chett Boxley ◽  
Mary Kay Amistadi ◽  
Raina M. Maier
Keyword(s):  
Contaminated Groundwater ◽  
Ion Flotation

On-site and in situ bioremediation of wood-preservative contaminated groundwater

2000 ◽  
Vol 42 (5-6) ◽  
pp. 371-376 ◽  
Author(s):  
J.A. Puhakka ◽  
K.T. Järvinen ◽  
J.H. Langwaldt ◽  
E.S. Melin ◽  
M.K. Männistö ◽  
...  
Keyword(s):  
Iron Oxidation ◽  
Wood Preservative ◽  
Pilot Scale ◽  
High Rate ◽  
Contaminated Groundwater ◽  
Groundwater Temperature ◽  
In Situ Bioremediation ◽  
Contaminated Aquifer ◽  
Fluidized Bed Process

This paper reviews ten years of research on on-site and in situ bioremediation of chlorophenol contaminated groundwater. Laboratory experiments on the development of a high-rate, fluidized-bed process resulted in a full-scale, pump-and-treat application which has operated for several years. The system operates at ambient groundwater temperature of 7 to 9°C at 2.7 d hydraulic retention time and chlorophenol removal efficiencies of 98.5 to 99.9%. The microbial ecology studies of the contaminated aquifer revealed a diverse chlorophenol-degrading community. In situ biodegradation of chlorophenols is controlled by oxygen availability, only. Laboratory and pilot-scale experiments showed the potential for in situ aquifer bioremediation with iron oxidation and precipitation as a potential problem.

Treatment of Highly Contaminated Groundwater: A SITE Demonstration Project

2001 ◽  
Vol 11 (3) ◽  
pp. 63-72
Author(s):  
Daniel Sullivan ◽  
Michael Merdinger ◽  
William Kosco ◽  
Asim B. Ray
Keyword(s):  
Demonstration Project ◽  
Contaminated Groundwater ◽  
A Site

The Efficiency of Natural and Electrokinetic Enhanced Migration of Pb in Aquifer

2012 ◽  
Vol 253-255 ◽  
pp. 1098-1101
Author(s):  
Hong Tao Hu
Keyword(s):  
Heavy Metal ◽  
Removal Efficiency ◽  
Experimental Results ◽  
Contaminated Groundwater ◽  
Voltage Gradient ◽  
Migration Method ◽  
Variation Rule

The natural and electrokinetic enhanced migration method was studied by the experiments in groundwater contaminated by heavy metal Pb in this work. The experimental results showed that the variation rule of Pb reflected that its migration was weak and the removal efficiency was only 9.30% near the anode in the natural seepage condition, but under the enhanced migration and remediation function, the pollutants could be enriched and removed faster, thus the removal efficiency of Pb was 46.72% near the anode at the end of experiment when the experimental voltage gradient was 0.28V/cm, which made known that this electrokinetic enhanced migration of Pb in contaminated groundwater was more effective method than that of natural seepage migration and enhanced the removal of contaminant in aquifer.

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