Concept

Bioremédiation

Publications associées (139)

Analysis of acidity production during enhanced reductive dechlorination using a simplified reactive transport model

David Andrew Barry, Alessandro Brovelli, Clare Robinson

Build-up of fermentation products and hydrochloric acid at a contaminated site undergoing enhanced reductive dechlorination can result in groundwater acidification. Sub-optimal pH conditions can inhibit microbial activity and lead to reduced dechlorination ...

Elsevier2012

Screen-printed electrochemical chromium (VI) sensing electrodes for effluent bioremediation monitoring

Peter Ryser, Thomas Maeder, Caroline Jacq

In this work, we introduce a simple, low-cost and acid-resistant materials system for carbon-based screen-printed electrodes (SPEs), and apply it to chemical sensing of hexavalent chromium, i.e. Cr(VI), in acid environments, as encountered in bioremediatio ...

Elsevier Science Bv2012

Functional diversity of reductive dehalogenases in a bacterial consortium degrading chloroethenes

Christof Holliger, Julien Maillard, Géraldine Florence Buttet

Enrichment cultures are investigated for the bioremediation potential of tetrachloroethene (PCE). This process is based on anaerobic respiration in which chlorinated compounds are used as electron acceptors (organohalide respiration, OHR). The key enzyme i ...

2012

Metal accumulation and response of antioxidant enzymes in seedlings and adult sunflower mutants with improved metal removal traits on a metal-contaminated soil

Jean-Paul Schwitzguebel, Erika Nehnevajova

Sunflower mutant lines with an enhanced tolerance and metal accumulation capacity obtained by mutation breeding have been proposed for Zn, Cd and Cu removal from metal-contaminated soils in previous studies. However, soils contaminated with trace elements ...

Elsevier2012

Evaluation of silicate minerals for pH control during bioremediation: Application to chlorinated solvents

David Andrew Barry, Christof Holliger, Alessandro Brovelli, Elsa Marina Lacroix

Accurate control of groundwater pH is of critical importance for in situ biological treatment of chlorinated solvents. This study evaluated a novel approach for buffering subsurface pH that relies on the use of silicate minerals as a long-term source of al ...

2012

Composition, stability, and measurement of reduced uranium phases for groundwater bioremediation at Old Rifle, CO

Rizlan Bernier-Latmani

Reductive biostimulation is currently being explored as a possible remediation strategy for U-contaminated groundwater, and is being investigated at a field site in Rifle, CO, USA. The long-term stability of the resulting U(IV) phases is a key component of ...

Elsevier2011

Influence of pH on dehalogenating bacteria for bioremediation of chlorinated solvents

David Andrew Barry, Christof Holliger, Alessandro Brovelli, Elsa Marina Lacroix

Chloroethenes such as tetrachloroethene (PCE) and trichloroethene (TCE) are among the most prevalent contaminants in groundwater due to their extensive use in industrial processes. In situ bioremediation (ISB) is an attractive technology for removal of the ...

2011

Modeling the effectiveness of U(VI) biomineralization in dual porosity porous media

David Andrew Barry

Recent attention has focused on the in situ immobilization of uranium by stimulation of dissimilatory metal-reducing bacteria (DMRB). The objective of this work was to investigate the effectiveness of this approach in heterogeneous and structured porous me ...

2011

Who will clean up the environment from polychlorinated biphenyls?

Christof Holliger, Pierre Rossi, Martina Praveckova

PCBs are persistent, toxic and carcinogenic organic pollutants whose production was banned in the 80’s. Recently specific bacterial species were shown to degrade these compounds by attacking the bond between the aromatic core and the flanking chlorine atom ...

2011

Characterization of Groundwater Microbial Communities, Dechlorinating Bacteria, and In Situ Biodegradation of Chloroethenes Along a Vertical Gradient

Pierre Rossi, Noam Shani

The variability of hydrogeochemical conditions can affect groundwater microbial communities and the natural attenuation of organic chemicals in contaminated aquifers. It is suspected that in situ biodegradation in anoxic plumes of chloroethenes depends on ...

2011

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