Proactive Screening Approach for Detecting Groundwater Contaminants along Urban Streams at the Reach-Scale

2010 ◽  
Vol 44 (16) ◽  
pp. 6088-6094 ◽  
Author(s):  
James W. Roy ◽  
Greg Bickerton
Keyword(s):  
Urban Streams ◽  
Groundwater Contaminants ◽  
Screening Approach

Reductive transformation of tetrachloroethylene to ethylene and ethane by an anaerobic filter

1997 ◽  
Vol 36 (6-7) ◽  
pp. 125-132 ◽  
Author(s):  
Toshiya Komatsu ◽  
Jun Shinmyo ◽  
Kiyoshi Momonoi
Keyword(s):  
Electron Donor ◽  
Laboratory Scale ◽  
Groundwater Contaminants ◽  
Reductive Transformation ◽  
Filter System ◽  
Anaerobic Filter ◽  
Anaerobic Microorganisms ◽  
Chlorinated Ethylenes ◽  
Start Up ◽  
Low Concentrations

Tetrachloroethylene (PCE) is one of the most common groundwater contaminants in Japan. PCE can be completely dechlorinated to ethylene (ETY) and ethane (ETA) by anaerobic microorganisms in the presence of a suitable electron donor. This study was conducted to examine the feasibility of using an anaerobic filter for the degradation of PCE in a bioremediation process. Laboratory-scale anaerobic filters were operated at 25°C using ethanol as the electron donor. Rapid start-up of the reactors was achieved by using anaerobic completely PCE-dechlorinating enrichment cultures as the inoculum. During the continuous operating periods, low concentrations (2.8 mg/L) of PCE were almost completely dechlorinated to ETY and ETA at hydraulic retention times of 49-15 hours with 100 mgCOD/L of ethanol. PCE concentrations as high as 80 mg/L was dechlorinated to ETY with a relatively low supply (200 mgCOD/L) of ethanol. Results of this study suggest that the anaerobic filter system is a feasible bioremediation process for the cleanup of groundwater which is contaminated by chlorinated ethylenes.

scholarly journals Combining Cell Envelope Stress Reporter Assays in a Screening Approach to Identify BAM Complex Inhibitors

2021 ◽  
Author(s):  
Maurice Steenhuis ◽  
Federico Corona ◽  
Corinne M. ten Hagen-Jongman ◽  
Waldemar Vollmer ◽  
Dominique Lambin ◽  
...  
Keyword(s):  
Cell Envelope ◽  
Bam Complex ◽  
Screening Approach ◽  
Envelope Stress ◽  
Reporter Assays

An antibody-free liver cancer screening approach based on nanoplasmonics biosensing chips via spectrum-based deep learning

NanoImpact ◽  
2021 ◽  
Vol 21 ◽  
pp. 100296
Author(s):  
Ningtao Cheng ◽  
Jing Fu ◽  
Dajing Chen ◽  
Shuzhen Chen ◽  
Hongyang Wang
Keyword(s):  
Deep Learning ◽  
Cancer Screening ◽  
Liver Cancer ◽  
Screening Approach
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