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Leapaldt HC, Frantz CM, Olsen-Valdez J, Snell KE, Trower EJ, Ingalls M. Primary to post-depositional microbial controls on the stable and clumped isotope record of shoreline sediments at Fayetteville Green Lake. GEOBIOLOGY 2024; 22:e12609. [PMID: 38958391 DOI: 10.1111/gbi.12609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 04/22/2024] [Accepted: 06/11/2024] [Indexed: 07/04/2024]
Abstract
Lacustrine carbonates are a powerful archive of paleoenvironmental information but are susceptible to post-depositional alteration. Microbial metabolisms can drive such alteration by changing carbonate saturation in situ, thereby driving dissolution or precipitation. The net impact these microbial processes have on the primary δ18O, δ13C, and Δ47 values of lacustrine carbonate is not fully known. We studied the evolution of microbial community structure and the porewater and sediment geochemistry in the upper ~30 cm of sediment from two shoreline sites at Green Lake, Fayetteville, NY over 2 years of seasonal sampling. We linked seasonal and depth-based changes of porewater carbonate chemistry to microbial community composition, in situ carbon cycling (using δ13C values of carbonate, dissolved inorganic carbon (DIC), and organic matter), and dominant allochems and facies. We interpret that microbial processes are a dominant control on carbon cycling within the sediment, affecting porewater DIC, aqueous carbon chemistry, and carbonate carbon and clumped isotope geochemistry. Across all seasons and sites, microbial organic matter remineralization lowers the δ13C of the porewater DIC. Elevated carbonate saturation states in the sediment porewaters (Ω > 3) were attributed to microbes from groups capable of sulfate reduction, which were abundant in the sediment below 5 cm depth. The nearshore carbonate sediments at Green Lake are mainly composed of microbialite intraclasts/oncoids, charophytes, larger calcite crystals, and authigenic micrite-each with a different origin. Authigenic micrite is interpreted to have precipitated in situ from the supersaturated porewaters from microbial metabolism. The stable carbon isotope values (δ13Ccarb) and clumped isotope values (Δ47) of bulk carbonate sediments from the same depth horizons and site varied depending on both the sampling season and the specific location within a site, indicating localized (μm to mm) controls on carbon and clumped isotope values. Our results suggest that biological processes are a dominant control on carbon chemistry within the sedimentary subsurface of the shorelines of Green Lake, from actively forming microbialites to pore space organic matter remineralization and micrite authigenesis. A combination of biological activity, hydrologic balance, and allochem composition of the sediments set the stable carbon, oxygen, and clumped isotope signals preserved by the Green Lake carbonate sediments.
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Affiliation(s)
- Hanna C Leapaldt
- Department of Geosciences, The Pennsylvania State University, University Park, Pennsylvania, USA
| | - Carie M Frantz
- Department of Earth and Environmental Sciences, Weber State University, Ogden, Utah, USA
| | - Juliana Olsen-Valdez
- Department of Geological Sciences, University of Colorado, Boulder, Colorado, USA
| | - Kathryn E Snell
- Department of Geological Sciences, University of Colorado, Boulder, Colorado, USA
| | - Elizabeth J Trower
- Department of Geological Sciences, University of Colorado, Boulder, Colorado, USA
| | - Miquela Ingalls
- Department of Geosciences, The Pennsylvania State University, University Park, Pennsylvania, USA
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Yang Y, Cápiro NL, Yan J, Marcet TF, Pennell KD, Löffler FE. Resilience and recovery of Dehalococcoides mccartyi following low pH exposure. FEMS Microbiol Ecol 2017; 93:4411799. [DOI: 10.1093/femsec/fix130] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Accepted: 10/05/2017] [Indexed: 11/12/2022] Open
Affiliation(s)
- Yi Yang
- Department of Civil and Environmental Engineering, University of Tennessee, 325 John D. Tickle Bldg, 851 Neyland Drive, Knoxville, TN 37996, USA
- Center for Environmental Biotechnology, University of Tennessee, 676 Dabney Hall, 1416 Circle Drive, Knoxville, TN 37996, USA
- Joint Institute for Biological Sciences (JIBS), Oak Ridge National Laboratory, Bldg 1520, Bethel Valley Road, Oak Ridge, TN 37831, USA
| | - Natalie L. Cápiro
- Department of Civil and Environmental Engineering, 200 College Avenue, Tufts University, Medford, MA 02155, USA
| | - Jun Yan
- Center for Environmental Biotechnology, University of Tennessee, 676 Dabney Hall, 1416 Circle Drive, Knoxville, TN 37996, USA
- Joint Institute for Biological Sciences (JIBS), Oak Ridge National Laboratory, Bldg 1520, Bethel Valley Road, Oak Ridge, TN 37831, USA
- Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, Liaoning 110016, China
- Department of Microbiology, University of Tennessee, M409 Walters Life Science Bldg, Knoxville, TN 37996, USA
| | - Tyler F. Marcet
- Department of Civil and Environmental Engineering, 200 College Avenue, Tufts University, Medford, MA 02155, USA
| | - Kurt D. Pennell
- Department of Civil and Environmental Engineering, 200 College Avenue, Tufts University, Medford, MA 02155, USA
| | - Frank E. Löffler
- Department of Civil and Environmental Engineering, University of Tennessee, 325 John D. Tickle Bldg, 851 Neyland Drive, Knoxville, TN 37996, USA
- Center for Environmental Biotechnology, University of Tennessee, 676 Dabney Hall, 1416 Circle Drive, Knoxville, TN 37996, USA
- Joint Institute for Biological Sciences (JIBS), Oak Ridge National Laboratory, Bldg 1520, Bethel Valley Road, Oak Ridge, TN 37831, USA
- Department of Microbiology, University of Tennessee, M409 Walters Life Science Bldg, Knoxville, TN 37996, USA
- Department of Biosystems Engineering and Soil Science, University of Tennessee, 2506 E.J. Chapman Dr., Knoxville, TN 37996, USA
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Yang Y, Cápiro NL, Marcet TF, Yan J, Pennell KD, Löffler FE. Organohalide Respiration with Chlorinated Ethenes under Low pH Conditions. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:8579-8588. [PMID: 28665587 DOI: 10.1021/acs.est.7b01510] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Bioremediation at chlorinated solvent sites often leads to groundwater acidification due to electron donor fermentation and enhanced dechlorination activity. The microbial reductive dechlorination process is robust at circumneutral pH, but activity declines at groundwater pH values below 6.0. Consistent with this observation, the activity of tetrachloroethene (PCE) dechlorinating cultures declined at pH 6.0 and was not sustained in pH 5.5 medium, with one notable exception. Sulfurospirillum multivorans dechlorinated PCE to cis-1,2-dichloroethene (cDCE) in pH 5.5 medium and maintained this activity upon repeated transfers. Microcosms established with soil and aquifer materials from five distinct locations dechlorinated PCE-to-ethene at pH 5.5 and pH 7.2. Dechlorination to ethene was maintained following repeated transfers at pH 7.2, but no ethene was produced at pH 5.5, and only the transfer cultures derived from the Axton Cross Superfund (ACS) microcosms sustained PCE dechlorination to cDCE as a final product. 16S rRNA gene amplicon sequencing of pH 7.2 and pH 5.5 ACS enrichments revealed distinct microbial communities, with the dominant dechlorinator being Dehalococcoides in pH 7.2 and Sulfurospirillum in pH 5.5 cultures. PCE-to-trichloroethene- (TCE-) and PCE-to-cDCE-dechlorinating isolates obtained from the ACS pH 5.5 enrichment shared 98.6%, and 98.5% 16S rRNA gene sequence similarities to Sulfurospirillum multivorans. These findings imply that sustained Dehalococcoides activity cannot be expected in low pH (i.e., ≤ 5.5) groundwater, and organohalide-respiring Sulfurospirillum spp. are key contributors to in situ PCE reductive dechlorination under low pH conditions.
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Affiliation(s)
| | - Natalie L Cápiro
- Department of Civil and Environmental Engineering, Tufts University , Medford, Massachusetts 02155, United States
| | - Tyler F Marcet
- Department of Civil and Environmental Engineering, Tufts University , Medford, Massachusetts 02155, United States
| | | | - Kurt D Pennell
- Department of Civil and Environmental Engineering, Tufts University , Medford, Massachusetts 02155, United States
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Wang SY, Chen SC, Lin YC, Kuo YC, Chen JY, Kao CM. Acidification and sulfide formation control during reductive dechlorination of 1,2-dichloroethane in groundwater: Effectiveness and mechanistic study. CHEMOSPHERE 2016; 160:216-229. [PMID: 27376861 DOI: 10.1016/j.chemosphere.2016.06.066] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Revised: 03/21/2016] [Accepted: 06/17/2016] [Indexed: 06/06/2023]
Abstract
To enhance the reductive dechlorination of 1,2-dichloroethane (DCA) in groundwater, substrate injection may be required. However, substrate biodegradation causes groundwater acidification and sulfide production, which inhibits the bacteria responsible for DCA dechlorination and results in an odor problem. In the microcosm study, the effectiveness of the addition of ferrous sulfate (FS), desulfurization slag (DS), and nanoscale zero-valent iron (nZVI) on acidification and sulfide control was studied during reductive dechlorination of DCA, and the emulsified substrate (ES) was used as the substrate. Up to 94% of the sulfide was removed with FS and DS addition (0.25 wt%) (initial DCA concentration = 13.5 mg/L). FS and DS amendments resulted in the formation of a metal sulfide, which reduced the hydrogen sulfide concentration as well as the subsequent odor problem. Approximately 96% of the DCA was degraded under reductive dechlorination with nZVI or DS addition using ES as the substrate. In microcosms with nZVI or DS addition, the sulfide concentration was reduced to less than 15 μg/L. Acidification can be controlled via hydroxide ions production after nZVI oxidation and reaction of free CaO (released from DS) with water, which enhanced DCA dechlorination. The quantitative polymerase chain reaction results confirmed that the microcosms with nZVI added had the highest Dehalococcoides population (up to 2.5 × 10(8) gene copies/g soil) due to effective acidification control. The α-elimination mechanism was the main abiotic process, and reductive dechlorination dominated by Dehalococcides was the biotic mechanism that resulted in DCA removal. More than 22 bacterial species were detected, and dechlorinating bacteria existed in soils under alkaline and acidic conditions.
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Affiliation(s)
- S Y Wang
- Institute of Environmental Engineering, National Sun Yat-Sen University, Kaohsiung, Taiwan
| | - S C Chen
- Department of Life Sciences, National Central University, Chung-Li, Taiwan
| | - Y C Lin
- Institute of Environmental Engineering, National Sun Yat-Sen University, Kaohsiung, Taiwan
| | - Y C Kuo
- Formosa Petrochemical Co., Kaohsiung, Taiwan
| | - J Y Chen
- Formosa Petrochemical Co., Kaohsiung, Taiwan
| | - C M Kao
- Institute of Environmental Engineering, National Sun Yat-Sen University, Kaohsiung, Taiwan
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Abstract
An analysis of the stable isotopes and the major ions in the surface water and groundwater in the Leizhou Peninsula was performed to identify the sources and recharge mechanisms of the groundwater. In this study, 70 water samples were collected from rivers, a lake, and pumping wells. The surface water was considered to have a lower salinity than the groundwater in the region of study. The regression equations forδD andδ18O for the surface water and the groundwater are similar to those for precipitation, indicating meteoric origins. TheδD andδ18O levels in the groundwater ranged from −60‰; to −25‰; and −8.6‰; to −2.5‰, respectively, and were lower than the stable isotope levels from the winter and spring precipitation. The groundwater in the southern area was classified as the Ca2+-Mg2+-HCO3--type, whereas the groundwater in the northern area included three types (Na+-Cl−-type, Ca2+-Mg2+-HCO3--type, and Ca2+-Mg2+-Cl−-type), indicating rapid and frequent water-rock exchange in the region. A reasonable conclusion is that the groundwater chemistry is dominated by rock weathering and rainwater of local origin, which are influenced by seawater carried by the Asian monsoon.
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Song Z, Yang W, Zhang J, Bi T, Li Y, Yuan S. Preparation of asymmetric membranes and their applications in the restoration of groundwater contaminated by trichloroethylene via two-step bioremediation technology. J Appl Polym Sci 2014. [DOI: 10.1002/app.41176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Zhenyu Song
- Tianjin Eco-City Environmental Protection Limited Company; Tianjin 300467 People's Republic of China
- Sino-Singapore Tianjin Eco-City Postdoctoral Programme; Tianjin 300467 People's Republic of China
- Tianjin Contaminated Site Remediation Technology Engineering Center; Tianjin 300467 People's Republic of China
| | - Wei Yang
- Tianjin Eco-City Environmental Protection Limited Company; Tianjin 300467 People's Republic of China
- Sino-Singapore Tianjin Eco-City Postdoctoral Programme; Tianjin 300467 People's Republic of China
- Tianjin Contaminated Site Remediation Technology Engineering Center; Tianjin 300467 People's Republic of China
| | - Jinghui Zhang
- Tianjin Eco-City Environmental Protection Limited Company; Tianjin 300467 People's Republic of China
- Tianjin Contaminated Site Remediation Technology Engineering Center; Tianjin 300467 People's Republic of China
| | - Tao Bi
- Tianjin Eco-City Environmental Protection Limited Company; Tianjin 300467 People's Republic of China
| | - Ye Li
- Tianjin Eco-City Environmental Protection Limited Company; Tianjin 300467 People's Republic of China
- Sino-Singapore Tianjin Eco-City Postdoctoral Programme; Tianjin 300467 People's Republic of China
- Tianjin Contaminated Site Remediation Technology Engineering Center; Tianjin 300467 People's Republic of China
| | - Shanshan Yuan
- Tianjin Eco-City Environmental Protection Limited Company; Tianjin 300467 People's Republic of China
- Tianjin Contaminated Site Remediation Technology Engineering Center; Tianjin 300467 People's Republic of China
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Lacroix E, Brovelli A, Maillard J, Rohrbach-Brandt E, Barry DA, Holliger C. Use of silicate minerals for long-term pH control during reductive dechlorination of high tetrachloroethene concentrations in continuous flow-through columns. THE SCIENCE OF THE TOTAL ENVIRONMENT 2014; 482-483:23-35. [PMID: 24636885 DOI: 10.1016/j.scitotenv.2014.02.099] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2013] [Revised: 02/12/2014] [Accepted: 02/21/2014] [Indexed: 06/03/2023]
Abstract
The long-term buffering potential of three silicate minerals (diopside, fayalite and forsterite) present as fine particles in porous quartz sand medium was evaluated in flow-through column experiments over a period of 6.5 months. The columns were operated with PCE concentrations close to saturation and inoculated with the organohalide-respiring consortium SDC-9™, which is able to completely dechlorinate PCE to ethene at high concentrations. In the absence of pH buffering agents, fermentation and organohalide respiration drove the pH close to 6.1, leading to severe inhibition of PCE dechlorination. Forsterite and fayalite were able to maintain the pH close to 7.5 and 6.5, respectively, and to sustain the production of VC and ethene. Diopside gradually lost its buffering capacity during the first 84 days due to the formation of a low reactive leached layer but dechlorination to cis-DCE was still achieved. Among the three minerals tested, forsterite was identified as the best buffering agent. Its presence led to the best PCE removal performance and the highest relative abundance of Dehalococcoides. This study showed that forsterite and fayalite are promising sources of long-term pH buffering for in situ bioremediation of source-zone PCE.
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Affiliation(s)
- Elsa Lacroix
- Ecole Polytechnique Fédérale de Lausanne (EPFL), School of Architecture, Civil and Environmental Engineering (ENAC), Ecological Engineering Laboratory, Lausanne, Switzerland; Ecole Polytechnique Fédérale de Lausanne (EPFL), School of Architecture, Civil and Environmental Engineering (ENAC), Laboratory for Environmental Biotechnology, Lausanne, Switzerland
| | - Alessandro Brovelli
- Ecole Polytechnique Fédérale de Lausanne (EPFL), School of Architecture, Civil and Environmental Engineering (ENAC), Ecological Engineering Laboratory, Lausanne, Switzerland
| | - Julien Maillard
- Ecole Polytechnique Fédérale de Lausanne (EPFL), School of Architecture, Civil and Environmental Engineering (ENAC), Laboratory for Environmental Biotechnology, Lausanne, Switzerland
| | - Emmanuelle Rohrbach-Brandt
- Ecole Polytechnique Fédérale de Lausanne (EPFL), School of Architecture, Civil and Environmental Engineering (ENAC), Laboratory for Environmental Biotechnology, Lausanne, Switzerland
| | - D A Barry
- Ecole Polytechnique Fédérale de Lausanne (EPFL), School of Architecture, Civil and Environmental Engineering (ENAC), Ecological Engineering Laboratory, Lausanne, Switzerland
| | - Christof Holliger
- Ecole Polytechnique Fédérale de Lausanne (EPFL), School of Architecture, Civil and Environmental Engineering (ENAC), Laboratory for Environmental Biotechnology, Lausanne, Switzerland.
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Use of silicate minerals for pH control during reductive dechlorination of chloroethenes in batch cultures of different microbial consortia. Appl Environ Microbiol 2014; 80:3858-67. [PMID: 24747895 DOI: 10.1128/aem.00493-14] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
In chloroethene-contaminated sites undergoing in situ bioremediation, groundwater acidification is a frequent problem in the source zone, and buffering strategies have to be implemented to maintain the pH in the neutral range. An alternative to conventional soluble buffers is silicate mineral particles as a long-term source of alkalinity. In previous studies, the buffering potentials of these minerals have been evaluated based on abiotic dissolution tests and geochemical modeling. In the present study, the buffering potentials of four silicate minerals (andradite, diopside, fayalite, and forsterite) were tested in batch cultures amended with tetrachloroethene (PCE) and inoculated with different organohalide-respiring consortia. Another objective of this study was to determine the influence of pH on the different steps of PCE dechlorination. The consortia showed significant differences in sensitivities toward acidic pH for the different dechlorination steps. Molecular analysis indicated that Dehalococcoides spp. that were present in all consortia were the most pH-sensitive organohalide-respiring guild members compared to Sulfurospirillum spp. and Dehalobacter spp. In batch cultures with silicate mineral particles as pH-buffering agents, all four minerals tested were able to maintain the pH in the appropriate range for reductive dechlorination of chloroethenes. However, complete dechlorination to ethene was observed only with forsterite, diopside, and fayalite. Dissolution of andradite increased the redox potential and did not allow dechlorination. With forsterite, diopside, and fayalite, dechlorination to ethene was observed but at much lower rates for the last two dechlorination steps than with the positive control. This indicated an inhibition effect of silicate minerals and/or their dissolution products on reductive dechlorination of cis-dichloroethene and vinyl chloride. Hence, despite the proven pH-buffering potential of silicate minerals, compatibility with the bacterial community involved in in situ bioremediation has to be carefully evaluated prior to their use for pH control at a specific site.
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