File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Hydro-biogeochemical impacts of fugitive methane on a shallow unconfined aquifer

TitleHydro-biogeochemical impacts of fugitive methane on a shallow unconfined aquifer
Authors
KeywordsAqueous geochemistry
Gas migration
Groundwater
Hydro-biogeochemistry
Methane
Issue Date2019
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/scitotenv
Citation
Science of the Total Environment, 2019, v. 690, p. 1342-1354 How to Cite?
AbstractOil and gas development can result in natural gas migration into shallow groundwater. Methane (CH4), the primary component of natural gas, can subsequently react with solutes and minerals in the aquifer to create byproducts that affect groundwater chemistry. Hydro-biogeochemical processes induced by fugitive gas from leaky oil and gas wells are currently not well understood. We monitored the hydro-biogeochemical responses of a controlled natural gas release into a well-studied Pleistocene beach sand aquifer (Canadian Forces Base Borden, Ontario, Canada). Groundwater samples were collected before, during, and up to 700 days after gas injection and analyzed for pH, major and minor ions, alkalinity, dissolved gases, stable carbon isotope ratios of CO2 and CH4, and microbial community composition. Gas injection resulted in a dispersed plume of free and dissolved phase natural gas, affecting groundwater chemistry in two distinct temporal phases. Initially (i.e. during and immediately after gas injection), pH declined and major ions and trace elements fluctuated; at times increasing above baseline concentrations. Changes in the short-term were due to invasion of deep groundwater with elevated total dissolved solids entrained with the upward migration of free phase gas and, reactions that were instigated through the introduction of constituents other than CH4 present in the injected gas (e.g. CO2). At later times, more pronounced aerobic and anaerobic CH4 oxidation led to subtle increases in major ions (e.g. Ca2+, H4SiO4) and trace elements (e.g. As, Cr). Microbial community profiling indicated a persistent perturbation to community composition with a conspicuous ingrowth of taxa implicated in aerobic CH4 oxidation as well anaerobic S, N and Fe species metabolism.
Persistent Identifierhttp://hdl.handle.net/10722/290147
ISSN
2023 Impact Factor: 8.2
2023 SCImago Journal Rankings: 1.998
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorForde, ON-
dc.contributor.authorCahill, AG-
dc.contributor.authorMayer, KU-
dc.contributor.authorMayer, B-
dc.contributor.authorSimister, RL-
dc.contributor.authorFinke, N-
dc.contributor.authorCrowe, SA-
dc.contributor.authorCherry, JA-
dc.contributor.authorParker, BL-
dc.date.accessioned2020-10-22T08:22:44Z-
dc.date.available2020-10-22T08:22:44Z-
dc.date.issued2019-
dc.identifier.citationScience of the Total Environment, 2019, v. 690, p. 1342-1354-
dc.identifier.issn0048-9697-
dc.identifier.urihttp://hdl.handle.net/10722/290147-
dc.description.abstractOil and gas development can result in natural gas migration into shallow groundwater. Methane (CH4), the primary component of natural gas, can subsequently react with solutes and minerals in the aquifer to create byproducts that affect groundwater chemistry. Hydro-biogeochemical processes induced by fugitive gas from leaky oil and gas wells are currently not well understood. We monitored the hydro-biogeochemical responses of a controlled natural gas release into a well-studied Pleistocene beach sand aquifer (Canadian Forces Base Borden, Ontario, Canada). Groundwater samples were collected before, during, and up to 700 days after gas injection and analyzed for pH, major and minor ions, alkalinity, dissolved gases, stable carbon isotope ratios of CO2 and CH4, and microbial community composition. Gas injection resulted in a dispersed plume of free and dissolved phase natural gas, affecting groundwater chemistry in two distinct temporal phases. Initially (i.e. during and immediately after gas injection), pH declined and major ions and trace elements fluctuated; at times increasing above baseline concentrations. Changes in the short-term were due to invasion of deep groundwater with elevated total dissolved solids entrained with the upward migration of free phase gas and, reactions that were instigated through the introduction of constituents other than CH4 present in the injected gas (e.g. CO2). At later times, more pronounced aerobic and anaerobic CH4 oxidation led to subtle increases in major ions (e.g. Ca2+, H4SiO4) and trace elements (e.g. As, Cr). Microbial community profiling indicated a persistent perturbation to community composition with a conspicuous ingrowth of taxa implicated in aerobic CH4 oxidation as well anaerobic S, N and Fe species metabolism.-
dc.languageeng-
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/scitotenv-
dc.relation.ispartofScience of the Total Environment-
dc.subjectAqueous geochemistry-
dc.subjectGas migration-
dc.subjectGroundwater-
dc.subjectHydro-biogeochemistry-
dc.subjectMethane-
dc.titleHydro-biogeochemical impacts of fugitive methane on a shallow unconfined aquifer-
dc.typeArticle-
dc.identifier.emailCrowe, SA: sacrowe@hku.hk-
dc.identifier.authorityCrowe, SA=rp02537-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.scitotenv.2019.06.322-
dc.identifier.pmid31470496-
dc.identifier.scopuseid_2-s2.0-85068921059-
dc.identifier.hkuros316144-
dc.identifier.volume690-
dc.identifier.spage1342-
dc.identifier.epage1354-
dc.identifier.isiWOS:000482549900122-
dc.publisher.placeNetherlands-
dc.identifier.issnl0048-9697-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats