Temporal analysis of the microbial communities in a nitrate-contaminated aquifer and the co-occurrence of anammox, n-damo and nitrous-oxide reducing bacteria

2020 ◽  
Vol 234 ◽  
pp. 103657
Author(s):  
Eduardo J. Aguilar-Rangel ◽  
Blanca L. Prado ◽  
María Soledad Vásquez-Murrieta ◽  
Paulina Estrada-de los Santos ◽  
Christina Siebe ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Microbial Communities ◽  
Temporal Analysis ◽  
Contaminated Aquifer ◽  
Reducing Bacteria

scholarly journals Biotic and Abiotic Biostimulation for the Reduction of Hexavalent Chromium in Contaminated Aquifers

Water ◽  
2022 ◽  
Vol 14 (1) ◽  
pp. 89
Author(s):  
Andriani Galani ◽  
Daniel Mamais ◽  
Constantinos Noutsopoulos ◽  
Petra Anastopoulou ◽  
Alexia Varouxaki
Keyword(s):  
Microbial Communities ◽  
Hexavalent Chromium ◽  
Soil Column ◽  
Carbon Sources ◽  
Anaerobic Respiration ◽  
Electron Donors ◽  
Natural Soil ◽  
Contaminated Aquifer ◽  
Reducing Bacteria

Hexavalent chromium is a carcinogenic heavy metal that needs to be removed effectively from polluted aquifers in order to protect public health and the environment. This work aims to evaluate the reduction of Cr(VI) to Cr(III) in a contaminated aquifer through the stimulation of indigenous microbial communities with the addition of reductive agents. Soil-column experiments were conducted in the absence of oxygen and at hexavalent chromium (Cr(VI)) groundwater concentrations in the 1000–2000 μg/L range. Two carbon sources (molasses and EVO) and one iron electron donor (FeSO4·7H2O) were used as ways to stimulate the metabolism and proliferation of Cr(VI) reducing bacteria in-situ. The obtained results indicate that microbial anaerobic respiration and electron transfer can be fundamental to alleviate polluted groundwater from hazardous Cr(VI). The addition of organic electron donors increased significantly Cr(VI) reduction rates in comparison to natural soil attenuation rates. Furthermore, a combination of organic carbon and iron electron donors led to a longer life span of the remediation process and thus increased total Cr(VI) removal. This is the first study to investigate biotic and abiotic Cr(VI) removal by conducting experiments with natural soil and by applying biostimulation to modify the natural existing microbial communities.

scholarly journals Community composition of nitrous oxide reducing bacteria investigated using a functional gene microarray

2018 ◽  
Vol 156 ◽  
pp. 44-50 ◽  
Author(s):  
A. Jayakumar ◽  
D. Balachandran ◽  
A.P. Rees ◽  
P.J. Kearns ◽  
J.L. Bowen ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Community Composition ◽  
Functional Gene ◽  
Gene Microarray ◽  
Reducing Bacteria

Moisture effects on gas-phase biofilter ammonia removal efficiency, nitrous oxide generation, and microbial communities

2014 ◽  
Vol 271 ◽  
pp. 292-301 ◽  
Author(s):  
Liangcheng Yang ◽  
Angela D. Kent ◽  
Xinlei Wang ◽  
Ted L. Funk ◽  
Richard S. Gates ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Microbial Communities ◽  
Gas Phase ◽  
Removal Efficiency ◽  
Ammonia Removal ◽  
Moisture Effects

Non-denitrifying nitrous oxide-reducing bacteria - An effective N2O sink in soil

2016 ◽  
Vol 103 ◽  
pp. 376-379 ◽  
Author(s):  
L.A. Domeignoz-Horta ◽  
M. Putz ◽  
A. Spor ◽  
D. Bru ◽  
M.C. Breuil ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Reducing Bacteria

scholarly journals Short-term effect of Eucalyptus plantations on soil microbial communities and soil-atmosphere methane and nitrous oxide exchange

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Caroline A. Cuer ◽  
Renato de A. R. Rodrigues ◽  
Fabiano C. Balieiro ◽  
Jacqueline Jesus ◽  
Elderson P. Silva ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Microbial Communities ◽  
Soil Microbial Communities ◽  
Term Effect ◽  
Short Term ◽  
Short Term Effect ◽  
Soil Microbial ◽  
Soil Atmosphere ◽  
Eucalyptus Plantations

scholarly journals Long-term dynamic changes in attached and planktonic microbial communities in a contaminated aquifer

2021 ◽  
Vol 277 ◽  
pp. 116765
Author(s):  
Juan F. Mujica-Alarcon ◽  
Steven F. Thornton ◽  
Stephen A. Rolfe
Keyword(s):  
Microbial Communities ◽  
Dynamic Changes ◽  
Contaminated Aquifer

scholarly journals Responses of soil nitrous oxide production and abundances and composition of associated microbial communities to nitrogen and water amendment

2017 ◽  
Vol 53 (6) ◽  
pp. 601-611 ◽  
Author(s):  
Qing Wang ◽  
Yu-Rong Liu ◽  
Cui-Jing Zhang ◽  
Li-Mei Zhang ◽  
Li-Li Han ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Microbial Communities ◽  
Oxide Production ◽  
Nitrous Oxide Production

Dechlorinating and Iron Reducing Bacteria Distribution in a TCE-Contaminated Aquifer

2010 ◽  
Vol 30 (1) ◽  
pp. 46-57 ◽  
Author(s):  
Carmen Lourdes Yupanqui Zaa ◽  
Joan E. McLean ◽  
R. Ryan Dupont ◽  
Jeanette M. Norton ◽  
Darwin L. Sorensen
Keyword(s):  
Contaminated Aquifer ◽  
Iron Reducing Bacteria ◽  
Reducing Bacteria
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