Articles with "anoxic oxic" as a keyword



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Denitrification of landfill leachate under different hydraulic retention time in a two-stage anoxic/oxic combined membrane bioreactor process: Performances and bacterial community.

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Published in 2018 at "Bioresource technology"

DOI: 10.1016/j.biortech.2017.11.026

Abstract: Two-stage anoxic/oxic combined membrane bioreactor (A/O-A/O-MBR) process was used to treat leachate generated from Shenyang Laohuchong landfill, and the effect of hydraulic retention time (HRT) was studied. A long HRT of 9 d and a short… read more here.

Keywords: two stage; stage anoxic; combined membrane; oxic combined ... See more keywords
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Effects of static magnetic field on the performances of anoxic/oxic sequencing batch reactor.

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Published in 2020 at "Bioresource technology"

DOI: 10.1016/j.biortech.2020.123299

Abstract: Two anoxic/oxic (A/O) sequencing batch reactor (SBR) processes were utilized to study the effects of static magnetic field (SMF) on biological wastewater treatment process. Except for conventional indices, the reduced nicotinamide adenine dinucleotide (NADH)/oxidized nicotinamide… read more here.

Keywords: batch reactor; oxic sequencing; anoxic oxic; effects static ... See more keywords
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Nitrous oxide emission in a laboratory anoxic-oxic process at different influent pHs: Generation pathways and the composition and function of bacterial community.

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Published in 2021 at "Bioresource technology"

DOI: 10.1016/j.biortech.2021.124844

Abstract: This study focused on the nitrous oxide (N2O) generation from the biological nitrogen removal process under different pH levels. To explore a pH optimum, the online N2O emission and the bacterial composition and function in… read more here.

Keywords: oxic process; nitrous oxide; generation; process ... See more keywords
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Dynamics of dissolved organic matter and dissolved organic nitrogen during anaerobic/anoxic/oxic treatment processes.

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Published in 2021 at "Bioresource technology"

DOI: 10.1016/j.biortech.2021.125026

Abstract: With Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) and fluorescence spectroscopy, this study investigated the transformation of dissolved organic matter (DOM) and nitrogen (DON) during the widely-applied anaerobic/anoxic/oxic (A2O) processes to provide molecular… read more here.

Keywords: anaerobic anoxic; dom; treatment; anoxic oxic ... See more keywords
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Mathematical modeling of nitrous oxide (N2O) production in anaerobic/anoxic/oxic processes: Improvements to published N2O models

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Published in 2017 at "Chemical Engineering Journal"

DOI: 10.1016/j.cej.2017.05.082

Abstract: Abstract Competition for electrons among different steps of denitrification on intracellular polymers (X STO ) plays a significant role in nitrous oxide (N 2 O) accumulation in the biological nitrogen removal process. In this work,… read more here.

Keywords: anaerobic anoxic; production; production anaerobic; nitrous oxide ... See more keywords
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Transportation and degradation of decabrominated diphenyl ether in sequential anoxic and oxic crop rotation.

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Published in 2020 at "Environmental pollution"

DOI: 10.1016/j.envpol.2020.115082

Abstract: This work evaluated the debromination and uptake of 14C-labeled BDE-209 in rice cultivars grown in anoxic soil for 120 days (d) followed by cultivation of vegetables (peanut, eggplant and pepper) in oxic soil (120 d). Degradation… read more here.

Keywords: soil; bde 209; anoxic oxic; crop rotation ... See more keywords
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Oxidation of soil organic carbon during an anoxic-oxic transition

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Published in 2020 at "Geoderma"

DOI: 10.1016/j.geoderma.2020.114584

Abstract: Abstract Redox reactions of iron (Fe) can play an important role in controlling the stability and transformation of organic carbon (OC) in soils. However, there is limited knowledge about the dynamics of Fe and OC… read more here.

Keywords: oxidation; pre reduced; anoxic oxic; organic carbon ... See more keywords
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Reactive Oxygen Species Promote Nitrous Oxide (N2O) Emissions from Soil/Sediment during the Anoxic-Oxic Transition.

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Published in 2022 at "Environmental science & technology"

DOI: 10.1021/acs.est.2c07081

Abstract: Reactive oxygen species (ROS)-induced element/pollutant geochemical processes in fluctuating anoxic-oxic areas have received increasing attention in recent years. Nitrous oxide (N2O) is a strong greenhouse gas; however, the relationship between ROS and N2O emissions in… read more here.

Keywords: n2o emissions; soil sediment; oxic transition; anoxic oxic ... See more keywords
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Plutonium mobilization from contaminated estuarine sediments, Esk Estuary (UK).

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Published in 2022 at "Chemosphere"

DOI: 10.2139/ssrn.4156479

Abstract: Since 1952, liquid radioactive effluent containing238-242Pu, 241Am, 237Np, 137Cs, and 99Tc has been released with authorization from the Sellafield nuclear complex (UK) into the Irish Sea. This represents the largest source of plutonium (Pu) discharged… read more here.

Keywords: plutonium mobilization; esk estuary; mobilization contaminated; irish sea ... See more keywords
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A Robust Longitudinal Co-culture of Obligate Anaerobic Gut Microbiome With Human Intestinal Epithelium in an Anoxic-Oxic Interface-on-a-Chip

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Published in 2019 at "Frontiers in Bioengineering and Biotechnology"

DOI: 10.3389/fbioe.2019.00013

Abstract: The majority of human gut microbiome is comprised of obligate anaerobic bacteria that exert essential metabolic functions in the human colon. These anaerobic gut bacteria constantly crosstalk with the colonic epithelium in a mucosal anoxic-oxic… read more here.

Keywords: obligate anaerobic; anoxic oxic; gut microbiome; interface ... See more keywords
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In-Situ Sludge Reduction Performance and Mechanism in Sulfidogenic Anoxic–Oxic–Anoxic Membrane Bioreactors

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Published in 2022 at "Membranes"

DOI: 10.3390/membranes12090865

Abstract: The excess sludge generated from the activated sludge process remains a big issue. Sustainable approaches that achieve in situ sludge reduction with satisfactory effluent quality deserve attention. This study explored the sludge reduction performance of… read more here.

Keywords: sludge reduction; anoxic; anoxic oxic; membrane ... See more keywords