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Article ; Online: Saltwater intrusion increases phosphorus abundance and alters availability in coastal soils with implications for future sea level rise.

Gu, Chunhao / Joshi, Sunendra / Fischel, Matthew H H / Tomaszewski, Elizabeth J / Northrup, Paul / Sparks, Donald L

2024 Volume 931, Page(s) 172624

Abstract: Sea level rise (SLR) promotes saltwater intrusion (SWI) into coastal soils globally at an increasing rate, impacting phosphorus (P) dynamics and adjacent water quality. However, how SWI influences P molecular speciation and availability in coastal soils ... ...

Abstract	Sea level rise (SLR) promotes saltwater intrusion (SWI) into coastal soils globally at an increasing rate, impacting phosphorus (P) dynamics and adjacent water quality. However, how SWI influences P molecular speciation and availability in coastal soils remains poorly understood. By using a space-for-time substitution strategy, we evaluated the SWI impacts on P transformation along a SWI gradient at the Rehoboth Inland Bay, which consists of five sampling locations along a transect representing different SWI degrees. Soils were analyzed at the macro- and micro-scale using X-ray absorption near edge spectroscopy (XANES) and the modified Hedley fractionation. With increasing distance from the Bay, soil salinity (29.3-0.07 mmhos cm
Language	English
Publishing date	2024-04-22
Publishing country	Netherlands
Document type	Journal Article
ZDB-ID	121506-1
ISSN	1879-1026 ; 0048-9697
ISSN (online)	1879-1026
ISSN	0048-9697
DOI	10.1016/j.scitotenv.2024.172624
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Article ; Online: Continuous cultivation of the lithoautotrophic nitrate‐reducing Fe(II)‐oxidizing culture KS in a chemostat bioreactor

Bayer, Timm / Tomaszewski, Elizabeth J. / Bryce, Casey / Kappler, Andreas / Byrne, James M.

Environmental Microbiology Reports. 2023 Aug., v. 15, no. 4 p.324-334

2023

Abstract: Laboratory‐based studies on microbial Fe(II) oxidation are commonly performed for 5–10 days in small volumes with high substrate concentrations, resulting in geochemical gradients and volumetric effects caused by sampling. We used a chemostat to enable ... ...

Abstract	Laboratory‐based studies on microbial Fe(II) oxidation are commonly performed for 5–10 days in small volumes with high substrate concentrations, resulting in geochemical gradients and volumetric effects caused by sampling. We used a chemostat to enable uninterrupted supply of medium and investigated autotrophic nitrate‐reducing Fe(II)‐oxidizing culture KS for 24 days. We analysed Fe‐ and N‐speciation, cell‐mineral associations, and the identity of minerals. Results were compared to batch systems (50 and 700 mL—static/shaken). The Fe(II) oxidation rate was highest in the chemostat with 7.57 mM Fe(II) d⁻¹, while the extent of oxidation was similar to the other experimental setups (average oxidation of 92% of all Fe(II)). Short‐range ordered Fe(III) phases, presumably ferrihydrite, precipitated and later goethite was detected in the chemostat. The 1 mM solid phase Fe(II) remained in the chemostat, up to 15 μM of reactive nitrite was measured, and 42% of visualized cells were partially or completely mineral‐encrusted, likely caused by abiotic oxidation of Fe(II) by nitrite. Despite (partial) encrustation, cells were still viable. Our results show that even with similar oxidation rates as in batch cultures, cultivating Fe(II)‐oxidizing microorganisms under continuous conditions reveals the importance of reactive nitrogen intermediates on Fe(II) oxidation, mineral formation and cell–mineral interactions.
Keywords	bioreactors ; ferrihydrite ; goethite ; microbiology ; nitrites ; nitrogen ; oxidation
Language	English
Dates of publication	2023-08
Size	p. 324-334.
Publishing place	John Wiley & Sons, Inc.
Document type	Article ; Online
Note	JOURNAL ARTICLE
ISSN	1758-2229
DOI	10.1111/1758-2229.13149
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Continuous cultivation of the lithoautotrophic nitrate-reducing Fe(II)-oxidizing culture KS in a chemostat bioreactor.

Bayer, Timm / Tomaszewski, Elizabeth J / Bryce, Casey / Kappler, Andreas / Byrne, James M

Environmental microbiology reports

2023 Volume 15, Issue 4, Page(s) 324–334

Abstract: Laboratory-based studies on microbial Fe(II) oxidation are commonly performed for 5-10 days in small volumes with high substrate concentrations, resulting in geochemical gradients and volumetric effects caused by sampling. We used a chemostat to enable ... ...

Abstract	Laboratory-based studies on microbial Fe(II) oxidation are commonly performed for 5-10 days in small volumes with high substrate concentrations, resulting in geochemical gradients and volumetric effects caused by sampling. We used a chemostat to enable uninterrupted supply of medium and investigated autotrophic nitrate-reducing Fe(II)-oxidizing culture KS for 24 days. We analysed Fe- and N-speciation, cell-mineral associations, and the identity of minerals. Results were compared to batch systems (50 and 700 mL-static/shaken). The Fe(II) oxidation rate was highest in the chemostat with 7.57 mM Fe(II) d
MeSH term(s)	Nitrates ; Nitrites ; Ferric Compounds ; Ferrous Compounds ; Oxidation-Reduction ; Minerals ; Bioreactors
Chemical Substances	Nitrates ; Nitrites ; Ferric Compounds ; Ferrous Compounds ; Minerals
Language	English
Publishing date	2023-03-29
Publishing country	United States
Document type	Journal Article ; Research Support, U.S. Gov't, Non-P.H.S. ; Research Support, Non-U.S. Gov't
ISSN	1758-2229
ISSN (online)	1758-2229
DOI	10.1111/1758-2229.13149
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Article ; Online: Prioritizing water availability study settings to address geogenic contaminants and related societal factors.

Erickson, Melinda L / Brown, Craig J / Tomaszewski, Elizabeth J / Ayotte, Joseph D / Böhlke, John K / Kent, Douglas B / Qi, Sharon

Environmental monitoring and assessment

2024 Volume 196, Issue 3, Page(s) 303

Abstract: Water availability for human and ecological uses depends on both water quantity and water quality. The U.S. Geological Survey (USGS) is developing strategies for prioritizing regional-scale and watershed basin-scale studies of water availability across ... ...

Abstract	Water availability for human and ecological uses depends on both water quantity and water quality. The U.S. Geological Survey (USGS) is developing strategies for prioritizing regional-scale and watershed basin-scale studies of water availability across the nation. Previous USGS ranking processes for basin-scale studies incorporated primarily water quantity factors but are now considering additional water quality factors. This study presents a ranking based on the potential impacts of geogenic constituents on water quality and consideration of societal factors related to water quality. High-concentration geogenic constituents, including trace elements and radionuclides, are among the most prevalent contaminants limiting water availability in the USA and globally. Geogenic constituents commonly occur in groundwater because of subsurface water-rock interactions, and their distributions are controlled by complex geochemical processes. Geogenic constituent mobility can also be affected by human activities (e.g., mining, energy production, irrigation, and pumping). Societal factors and relations to drinking water sources and water quality information are often overlooked when evaluating research priorities. Sociodemographic characteristics, data gaps resulting from historical data-collection disparities, and infrastructure condition/age are examples of factors to consider regarding environmental justice. This paper presents approaches for ranking and prioritizing potential basin-scale study areas across the contiguous USA by considering a suite of conventional physical and geochemical variables related to geogenic constituents, with and without considering variables related to societal factors. Simultaneous consideration of societal and conventional factors could provide decision makers with more diverse, interdisciplinary tools to increase equity and reduce bias in prioritizing focused research areas and future water availability studies.
MeSH term(s)	Humans ; Environmental Monitoring/methods ; Water Pollutants, Chemical/analysis ; Groundwater/chemistry ; Water Quality ; Trace Elements
Chemical Substances	Water Pollutants, Chemical ; Trace Elements
Language	English
Publishing date	2024-02-24
Publishing country	Netherlands
Document type	Journal Article
ZDB-ID	782621-7
ISSN	1573-2959 ; 0167-6369
ISSN (online)	1573-2959
ISSN	0167-6369
DOI	10.1007/s10661-024-12362-2
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Article: Decreased Electron Transfer between Cr(VI) and AH2DS in the Presence of Goethite

Tomaszewski, Elizabeth J / Ginder-Vogel, Matthew

Journal of environmental quality. 2018 Jan., v. 47, no. 1

2018

Abstract: 9,10-Anthraquinone-2,6-disulfonic acid (AQDS) is commonly used as a model species to examine the influence of quinones on different biogeochemical cycles. The reduced form of this quinone, AH2DS, can donate electrons to the toxic metal species Cr(VI), ... ...

Abstract	9,10-Anthraquinone-2,6-disulfonic acid (AQDS) is commonly used as a model species to examine the influence of quinones on different biogeochemical cycles. The reduced form of this quinone, AH2DS, can donate electrons to the toxic metal species Cr(VI), leading to the precipitation of less soluble Cr(III) phases. Due to the environmental abundance of Fe(III) (oxyhydr)oxides, such as goethite (α-FeOOH), it is important to study the role of these mineral phases on the electron transfer reaction between AH2DS and Cr(VI). In this study, this electron transfer reaction is examined in the presence and absence of goethite at three different ratios of AH2DS/Cr(VI). Ultraviolet-visible spectroscopy is used to qualitatively assess the oxidation state of AQDS during reactions with goethite. Iron K-edge and Cr K-edge X-ray absorption spectroscopy are used to examine the role of goethite in electron transfer and identify Cr(III) phases that form. Goethite inhibits the extent of Cr(VI) reduction to Cr(III), most notably at the highest ratio of AH2DS/Cr(VI) investigated. Production of semiquinone radical species may limit electron transfer and decrease the yields of Fe(II) and Cr(III), both in the presence and absence of goethite. Understanding abiotic electron transfer reactions that occur in systems with multiple redox active species is important to determine the contribution of abiotic redox reactions to Fe biogeochemical cycling in natural soils.
Keywords	biogeochemical cycles ; chemical reduction ; chromium ; electron transfer ; electrons ; goethite ; iron ; iron oxyhydroxides ; models ; oxidation ; oxides ; quinones ; soil ; toxicity ; ultraviolet-visible spectroscopy ; X-ray absorption spectroscopy
Language	English
Dates of publication	2018-01
Size	p. 139-146.
Publishing place	The American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America, Inc.
Document type	Article
Note	epub
ZDB-ID	120525-0
ISSN	1537-2537 ; 0047-2425
ISSN (online)	1537-2537
ISSN	0047-2425
DOI	10.2134/jeq2017.08.0316
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Effect of Microbial Biomass and Humic Acids on Abiotic and Biotic Magnetite Formation.

Han, Xiaohua / Tomaszewski, Elizabeth J / Sorwat, Julian / Pan, Yongxin / Kappler, Andreas / Byrne, James M

Environmental science & technology

2020 Volume 54, Issue 7, Page(s) 4121–4130

Abstract: Magnetite ( ... ...

Abstract	Magnetite (Fe
MeSH term(s)	Biomass ; Ferric Compounds ; Ferrosoferric Oxide ; Humic Substances ; Minerals ; Oxidation-Reduction
Chemical Substances	Ferric Compounds ; Humic Substances ; Minerals ; Ferrosoferric Oxide (XM0M87F357)
Language	English
Publishing date	2020-03-17
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ISSN	1520-5851
ISSN (online)	1520-5851
DOI	10.1021/acs.est.9b07095
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Decreased Electron Transfer between Cr(VI) and AH2DS in the Presence of Goethite.

Tomaszewski, Elizabeth J / Ginder-Vogel, Matthew

Journal of environmental quality

2017 Volume 47, Issue 1, Page(s) 139–146

Abstract: 9,10-Anthraquinone-2,6-disulfonic acid (AQDS) is commonly used as a model species to examine the influence of quinones on different biogeochemical cycles. The reduced form of this quinone, AHDS, can donate electrons to the toxic metal species Cr(VI), ... ...

Abstract	9,10-Anthraquinone-2,6-disulfonic acid (AQDS) is commonly used as a model species to examine the influence of quinones on different biogeochemical cycles. The reduced form of this quinone, AHDS, can donate electrons to the toxic metal species Cr(VI), leading to the precipitation of less soluble Cr(III) phases. Due to the environmental abundance of Fe(III) (oxyhydr)oxides, such as goethite (α-FeOOH), it is important to study the role of these mineral phases on the electron transfer reaction between AHDS and Cr(VI). In this study, this electron transfer reaction is examined in the presence and absence of goethite at three different ratios of AHDS/Cr(VI). Ultraviolet-visible spectroscopy is used to qualitatively assess the oxidation state of AQDS during reactions with goethite. Iron K-edge and Cr K-edge X-ray absorption spectroscopy are used to examine the role of goethite in electron transfer and identify Cr(III) phases that form. Goethite inhibits the extent of Cr(VI) reduction to Cr(III), most notably at the highest ratio of AHDS/Cr(VI) investigated. Production of semiquinone radical species may limit electron transfer and decrease the yields of Fe(II) and Cr(III), both in the presence and absence of goethite. Understanding abiotic electron transfer reactions that occur in systems with multiple redox active species is important to determine the contribution of abiotic redox reactions to Fe biogeochemical cycling in natural soils.
MeSH term(s)	Chromium/chemistry ; Electrons ; Ferric Compounds ; Iron Compounds/chemistry ; Minerals/chemistry ; Oxidation-Reduction ; Soil Pollutants/chemistry
Chemical Substances	Ferric Compounds ; Iron Compounds ; Minerals ; Soil Pollutants ; Chromium (0R0008Q3JB) ; goethite (1310-14-1) ; chromium hexavalent ion (18540-29-9)
Language	English
Publishing date	2017-07-06
Publishing country	United States
Document type	Journal Article
ZDB-ID	120525-0
ISSN	1537-2537 ; 0047-2425
ISSN (online)	1537-2537
ISSN	0047-2425
DOI	10.2134/jeq2017.08.0316
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Zs.A 2958: Show issues

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Article: Effect of Natural Organic Matter on the Fate of Cadmium During Microbial Ferrihydrite Reduction

Zhou, Zhe / Muehe, E. Marie / Tomaszewski, Elizabeth J / Lezama-Pacheco, Juan / Kappler, Andreas / Byrne, James M

Environmental science & technology. 2020 July 07, v. 54, no. 15

2020

Abstract: Natural organic matter (NOM) is known to affect the microbial reduction and transformation of ferrihydrite, but its implication toward cadmium (Cd) associated with ferrihydrite is not well-known. Here, we investigated how Cd is redistributed when ... ...

Abstract	Natural organic matter (NOM) is known to affect the microbial reduction and transformation of ferrihydrite, but its implication toward cadmium (Cd) associated with ferrihydrite is not well-known. Here, we investigated how Cd is redistributed when ferrihydrite undergoes microbial reduction in the presence of NOM. Incubation with Geobacter sulfurreducens showed that both the rate and the extent of reduction of Cd-loaded ferrihydrite were enhanced by increasing concentrations of NOM (i.e., C/Fe ratio). Without NOM, only 3–4% of Fe(III) was reduced, but around 61% of preadsorbed Cd was released into solution due to ferrihydrite transformation to lepidocrocite. At high C/Fe ratio (1.6), more than 35% of Fe(III) was reduced, as NOM can facilitate bioreduction by working as an electron shuttle and decreased aggregate size, but only a negligible amount of Cd was released into solution, thus decreasing Cd toxicity and prolonging microbial Fe(III) reduction. No ferrihydrite transformation was observed at high C/Fe ratios using Mössbauer spectroscopy and X-ray diffraction, and X-ray absorption spectroscopy indicated the proportion of Cd-OM bond increased after microbial reduction. This study shows that the presence of NOM leads to less mobilization of Cd under reducing condition possibly by inhibiting ferrihydrite transformation and recapturing Cd through Cd-OM bond.
Keywords	Geobacter sulfurreducens ; X-ray absorption spectroscopy ; X-ray diffraction ; cadmium ; environmental science ; ferrihydrite ; lepidocrocite ; organic matter ; technology ; toxicity
Language	English
Dates of publication	2020-0707
Size	p. 9445-9453.
Publishing place	American Chemical Society
Document type	Article
Note	NAL-AP-2-clean
ISSN	1520-5851
DOI	10.1021/acs.est.0c03062
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Effect of Natural Organic Matter on the Fate of Cadmium During Microbial Ferrihydrite Reduction.

Zhou, Zhe / Muehe, E Marie / Tomaszewski, Elizabeth J / Lezama-Pacheco, Juan / Kappler, Andreas / Byrne, James M

Environmental science & technology

2020 Volume 54, Issue 15, Page(s) 9445–9453

Abstract	Natural organic matter (NOM) is known to affect the microbial reduction and transformation of ferrihydrite, but its implication toward cadmium (Cd) associated with ferrihydrite is not well-known. Here, we investigated how Cd is redistributed when ferrihydrite undergoes microbial reduction in the presence of NOM. Incubation with
MeSH term(s)	Cadmium ; Ferric Compounds ; Geobacter ; Iron ; Minerals ; Oxidation-Reduction
Chemical Substances	Ferric Compounds ; Minerals ; Cadmium (00BH33GNGH) ; ferric oxyhydroxide (87PZU03K0K) ; Iron (E1UOL152H7)
Language	English
Publishing date	2020-07-16
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S.
ISSN	1520-5851
ISSN (online)	1520-5851
DOI	10.1021/acs.est.0c03062
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Mineral Defects Enhance Bioavailability of Goethite toward Microbial Fe(III) Reduction.

Notini, Luiza / Byrne, James M / Tomaszewski, Elizabeth J / Latta, Drew E / Zhou, Zhe / Scherer, Michelle M / Kappler, Andreas

Environmental science & technology

2019 Volume 53, Issue 15, Page(s) 8883–8891

Abstract: Surface defects have been shown to facilitate electron transfer between Fe(II) and goethite (α-FeOOH) in abiotic systems. It is unclear, however, whether defects also facilitate microbial goethite reduction in anoxic environments where electron transfer ... ...

Abstract	Surface defects have been shown to facilitate electron transfer between Fe(II) and goethite (α-FeOOH) in abiotic systems. It is unclear, however, whether defects also facilitate microbial goethite reduction in anoxic environments where electron transfer between cells and Fe(III) minerals is the limiting factor. Here, we used stable Fe isotopes to differentiate microbial reduction of goethite synthesized by hydrolysis from reduction of goethite that was further hydrothermally treated to remove surface defects. The goethites were reduced by
MeSH term(s)	Biological Availability ; Ferric Compounds ; Iron Compounds ; Minerals ; Oxidation-Reduction
Chemical Substances	Ferric Compounds ; Iron Compounds ; Minerals ; goethite (1310-14-1)
Language	English
Publishing date	2019-07-18
Publishing country	United States
Document type	Journal Article
ISSN	1520-5851
ISSN (online)	1520-5851
DOI	10.1021/acs.est.9b03208
Database	MEDical Literature Analysis and Retrieval System OnLINE

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