Results 71 to 80 of about 1,195 (176)

Biogeochemical characterization of micritized carbonate grains in the shallow‐marine Al‐Kharrar Lagoon (Red Sea, Saudi Arabia)

Sedimentology, Volume 72, Issue 5, Page 1593-1619, August 2025.
ABSTRACT Micritization of marine carbonate grains is an early diagenetic process involving the alteration of the original carbonate fabric and the formation of cryptocrystalline textures through cycles of dissolution and reprecipitation. Microorganisms play a significant role in this process, actively contributing to the formation of constructive and ...
Camila Areias, Elisa Garuglieri, Thomas Teillet, Viswasanthi Chandra, Ramona Marasco, Volker Vahrenkamp, Daniele Daffonchio, John J. G. Reijmer, Mónica Sánchez‐Román   +8 more
wiley   +1 more source

Functional Expression and Characterization of Tetrachloroethene Dehalogenase From Geobacter sp.

Frontiers in Microbiology, 2018
Reductive dehalogenase (RDase) consists of two parts, RdhA and RdhB. RdhA is the catalytic subunit, harboring a cobalamin cofactor and two Fe–S clusters. RdhA is anchored to the cytoplasmic membrane via the membrane anchoring subunit, RdhB.
Ryuki Nakamura, Tomohiro Obata, Ryota Nojima, Yohey Hashimoto, Keiichi Noguchi, Takahiro Ogawa, Masafumi Yohda, Masafumi Yohda   +7 more
doaj   +1 more source

Heavy Metal Remediation: A Sustainable Approach

Applied and Environmental Soil Science, Volume 2025, Issue 1, 2025.
With an emphasis on bioremediation as a crucial approach to mitigate the detrimental effects of heavy metals (HMs), this study explores the causes of HM pollution, their impact on the environment and human health, and remediation techniques. In contrast to traditional physical and chemical methods, bioremediation offers a more economical, less toxic ...
Ujjal Dhakal, Manita Aryal, Muhammad Yousuf Jat Baloch, Purnima Baidya, Nidhi Chaudhary   +4 more
wiley   +1 more source

Multi-method assessment of the intrinsic biodegradation potential of an aquifer contaminated with chlorinated ethenes at an industrial area in Barcelona (Spain) [PDF]

, 2020
The bioremediation potential of an aquifer contaminated with tetrachloroethene (PCE) was assessed by combining hydrogeochemical data of the site, microcosm studies, metabolites concentrations, compound specific-stable carbon isotope analysis and the ...
Blázquez-Pallí, N., Bosch, M., Marco-Urrea, E., Rosell, Mònica, Soler i Gil, Albert, Varias, Joan, Vicent, Teresa   +6 more
core   +1 more source

Vitamin B12 as a source of variability in isotope effects for chloroform biotransformation by Dehalobacter

MicrobiologyOpen, Volume 13, Issue 4, August 2024.
The presence of vitamin B12 has a significant effect on carbon isotope effects, consistent with an isotope masking effect. We interpret this in the context of predicted enzyme structures. Abstract Carbon and chlorine isotope effects for biotransformation of chloroform by different microbes show significant variability.
Elizabeth Phillips, Katherine Picott, Steffen Kümmel, Olivia Bulka, Elizabeth Edwards, Po‐Hsiang Wang, Matthias Gehre, Ivonne Nijenhuis, Barbara S. Lollar   +8 more
wiley   +1 more source

Ecology and biogeography of bacterial communities associated with chloroethene-contaminated aquifers

Frontiers in Microbiology, 2012
Massive usage, along with careless handling, storage, spills and leakages made chloroethenes (CEs) one of the most abundant classes of groundwater contaminants.
Pierre eRossi, Noam eShani, Florian eKohler, Gwenaël eImfeld, Christof eHolliger   +4 more
doaj   +1 more source

Frequent concomitant presence of Desulfitobacterium spp. and " Dehalococcoides ” spp. in chloroethene-dechlorinating microbial communities [PDF]

, 2018
The presence of chloroethene dechlorination activity as well as several bacterial genera containing mainly organohalide-respiring members was investigated in 34 environmental samples from 18 different sites.
Holliger, Christof, Maillard, Julien, Rouzeau-Szynalski, Katia   +2 more
core  

Multiple Dual C−Cl Isotope Patterns Associated with Reductive Dechlorination of Tetrachloroethene [PDF]

, 2017
Dual isotope slopes are increasingly used to identify transformation pathways of contaminants. We investigated if reductive dechlorination of tetrachloroethene (PCE) by consortia containing bacteria with different reductive dehalogenases (rdhA) genes can
Badin, Alice, Buttet, Géraldine, Holliger, Christof, Hunkeler, Daniel, Maillard, Julien   +4 more
core   +2 more sources

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

Journal of Contaminant Hydrology, 2015
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 ...
Natalie L, Cápiro, Frank E, Löffler, Kurt D, Pennell   +2 more
openaire   +3 more sources

Archaea and Bacteria Acclimate to High Total Ammonia in a Methanogenic Reactor Treating Swine Waste [PDF]

, 2016
Citation: Esquivel-Elizondo, S., Parameswaran, P., Delgado, A. G., Maldonado, J., Rittmann, B. E., & Krajmalnik-Brown, R. (2016). Archaea and Bacteria Acclimate to High Total Ammonia in a Methanogenic Reactor Treating Swine Waste.
Delgado, A. G., Esquivel-Elizondo, S., Krajmalnik-Brown, R., Maldonado, J., Parameswaran, P., Rittmann, B. E.   +5 more
core   +3 more sources