Spatial and temporal dynamics of organohalide-respiring bacteria in a heterogeneous PCE-DNAPL source zone

Journal of Contaminant Hydrology
Natalie L CápiroKurt D Pennell

Abstract

Effective treatment of sites contaminated with dense non-aqueous phase liquids (DNAPLs) requires detailed understanding of the microbial community responses to changes in source zone strength and architecture. Changes in the spatial and temporal distributions of the organohalide-respiring Dehalococcoides mccartyi (Dhc) strains and Geobacter lovleyi strain SZ (GeoSZ) were examined in a heterogeneous tetrachloroethene- (PCE-) DNAPL source zone within a two-dimensional laboratory-scale aquifer flow cell. As part of a combined remedy approach, flushing with 2.3 pore volumes (PVs) of 4% (w/w) solution of the nonionic, biodegradable surfactant Tween® 80 removed 55% of the initial contaminant mass, and resulted in a PCE-DNAPL distribution that contained 51% discrete ganglia and 49% pools (ganglia-to-pool ratio of 1.06). Subsequent bioaugmentation with the PCE-to-ethene-dechlorinating consortium BDI-SZ resulted in cis-1,2-dichloroethene (cis-DCE) formation after 1 PV (ca. 7days), while vinyl chloride (VC) and ethene were detected 10 PVs after bioaugmentation. Maximum ethene yields (ca. 90μM) within DNAPL pool and ganglia regions coincided with the detection of the vcrA reductive dehalogenase (RDase) gene that exceeded the Dhc 16S rRNA ...Continue Reading

References

Jun 8, 2001·Environmental Science & Technology·N Cope, J B Hughes
Jul 12, 2002·Cell·Wendy E ThomasEvgeni V Sokurenko
Aug 22, 2002·Environmental Science & Technology·Yanru Yang, Perry L McCarty
Jul 2, 2003·Environmental Science & Technology·David T AdamsonJoseph B Hughes
Nov 1, 2003·Environmental Toxicology and Chemistry·Travis McGuire, Joseph B Hughes
Nov 19, 2003·Environmental Science & Technology·Susan C MravikGuy W Sewell
Oct 7, 2004·Applied and Environmental Microbiology·Rosa Krajmalnik-BrownFrank E Löffler
Dec 3, 2004·Environmental Science & Technology·C Andrew RamsburgErik A Petrovskis
Mar 7, 2006·Applied and Environmental Microbiology·Youlboong SungFrank E Löffler
Apr 7, 2006·Applied and Environmental Microbiology·Youlboong SungFrank E Löffler
Jun 22, 2006·Environmental Science & Technology·Brent E SleepElizabeth A Edwards
Oct 21, 2006·Environmental Science & Technology·Eric J Suchomel, Kurt D Pennell
Apr 3, 2007·Environmental Science & Technology·Benjamin K AmosFrank E Löffler
May 20, 2008·Environmental Microbiology·Natalie L CápiroPedro J J Alvarez
Jun 14, 2008·Journal of Contaminant Hydrology·Mohammad F AzizianLewis Semprini
Jan 31, 2009·FEMS Microbiology Reviews·Janmejay PandeyRakesh K Jain
Feb 28, 2009·Environmental Science & Technology·Jed CostanzaKurt D Pennell
Apr 17, 2009·Environmental Science & Technology·Benjamin K AmosFrank E Löffler
Mar 17, 2010·Journal of Contaminant Hydrology·John A ChristLinda M Abriola
Jun 8, 2010·Environmental Science & Technology·Charles E SchaeferRobert J Steffan
Oct 19, 2010·Journal of Contaminant Hydrology·P J HaestE Smolders
Nov 9, 2010·Environmental Science & Technology·C Andrew RamsburgJohn A Christ
Nov 4, 2011·Water Research·Kelly E FletcherFrank E Löffler
May 9, 2012·Environmental Science & Technology·Hans F StrooMarvin Unger
May 24, 2013·Journal of Contaminant Hydrology·Mark Harkness, Angela Fisher
Dec 1, 1991·Microbial Ecology·T C HazenC B Fliermans
Aug 12, 2014·Environmental Science & Technology·Natalie L CápiroFrank E Löffler

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.