DOI: 10.1016/j.watres.2018.12.024
Scopus记录号: 2-s2.0-85060326989
论文题名: Controls on iron(II) fluxes into waterways impacted by acid mine drainage: A DamkÖhler analysis of groundwater seepage and iron kinetics
作者: Oldham C. ; Beer J. ; Blodau C. ; Fleckenstein J. ; Jones L. ; Neumann C. ; Peiffer S.
刊名: Water Research
ISSN: 431354
出版年: 2019
起始页码: 11
结束页码: 20
语种: 英语
英文关键词: Acidity generation
; Mine lake
; Reactive transport
; Sediment water interface
Scopus关键词: Alkalinity
; Biogeochemistry
; Chemical analysis
; Groundwater
; Groundwater flow
; Lakes
; Reaction rates
; Sediments
; Seepage
; Acid mine drainage
; Chemical profiles
; Ground water inflow
; Groundwater seepage
; Reactive chemicals
; Reactive transport
; Sediment water interface
; Seepage velocity
; Iron compounds
; dissolved oxygen
; ferrous ion
; ground water
; water
; acid mine drainage
; acidity
; alkalinity
; anthropogenic source
; groundwater flow
; iron
; lake water
; macroalga
; organic matter
; oxygenation
; porewater
; reaction kinetics
; reactive transport
; sediment-water interface
; seepage
; solute
; acid mine drainage
; acidification
; advection
; alkalinity
; Article
; bioremediation
; boundary layer
; concentration (parameter)
; environmental impact
; hydrodynamics
; iron kinetics
; priority journal
; sediment
; surface property
; velocity
; Germany
; Lusatia
英文摘要: When acidic groundwater flows into an aquatic system the sediment water interface (SWI) acts as a transition zone between the groundwater and lake water, and often exhibits strong physical and biogeochemical gradients. The fate of groundwater-borne solutes, such as Fe(II), is determined by the balance between the exposure time during transport across the SWI and the reaction time within the SWI, however the relative role of groundwater seepage rates and iron kinetics on acidity generation in lakes is unknown. Porewater seepage velocities, porewater chemical profiles, and limnological data were collected across multiple field campaigns over the last two decades, in acid Mine Lake 77, in Lusatia, Germany. This rare data set was analyzed using a Damköhler approach that compares exposure and reactions timescales, to determine that Fe(II) would typically be transported with little reaction across the SWI, spatially separating it from sediment-processes that produce alkalinity and providing a source of acidity to the lake. This Damköhler analysis further showed that remediation should be focused on reducing groundwater seepage velocities and enhancing exposure times. Strategic planting of submerged benthic macroalgae would slow groundwater inflows, as well as oxygenating overlying waters and supplying organic matter to the sediments. A similar Damköhler analysis could be used to assess the fate of any groundwater-borne reactive chemicals (e.g. phosphorus) into lakes and streams. © 2019 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/121999
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: School of Engineering, The University of Western Australia, Perth, WA 6009, Australia; University of Bayreuth, Department of Hydrology, Bayreuth Center of Ecology and Environmental Research (BayCEER), Bayreuth, 95440, Germany; University of Münster, Ecohydrology and Biogeochemistry Group, Institute of Landscape Ecology, Münster, 48149, Germany; Helmholtz Centre for Environmental Research, Department of Hydrogeology, Leipzig, Germany
Recommended Citation:
Oldham C.,Beer J.,Blodau C.,et al. Controls on iron(II) fluxes into waterways impacted by acid mine drainage: A DamkÖhler analysis of groundwater seepage and iron kinetics[J]. Water Research,2019-01-01