A laboratory study of the biogeochemical cycling of Fe, Mn, Zn and Cu across the sediment-water interface of a productive lake

Hamilton−Taylor, John; Davison, William; Morfett, K.

doi:10.1007/bf00877508

Cited by 15 publications

(5 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…the other microcosms, the dissolution process in the sediment and the mass transport of Fe(II) and sulfate into the water column were more dominant until the end of experiments. The described processes were also observed in other microcosms with iron-and sulfate-rich sediments from acidic pit mine lakes (11,13) or sediments of eutrophic lakes (52).…”

Section: Resultssupporting

confidence: 68%

Microcosm Studies for Neutralization of Hypolimnic Acid Mine Pit Lake Water (pH 2.6)

Frömmichen

Wendt‐Potthoff

Friese

et al. 2004

Environ. Sci. Technol.

View full text Add to dashboard Cite

Ten microcosms of 0.088 m3 water volume (0.3 m i.d. and 1.20 m height) were designed for neutralization studies representing hypolimnic ecosystem models for acid mine pit lakes. Sediment and water were collected from an acid lignite mine pit lake (Brandenburg, Germany) and filled into the microcosms. To determine the efficacy of controlled in situ organic carbon amendments as a possible neutralization method, sediment and water were treated with ethanol and Carbokalk with and without wheat straw. The water chemistry was monitored for 1 yr. At start-up and end of the experiments, the sedimentwas characterized. Iron and sulfate were removed with varying intensity from the water phase as a result of microbial iron and sulfate reduction together with a subsequent precipitation of unsoluble sulfide minerals to the sediment. The pH rose, and alkalinity generation and bacterial growth were observed. Neutralization rates were calculated using equivalents of accumulated total reduced inorganic sulfur together with the nonsulfidic reactive ferrous iron in the sediment. In the treated microcosms, the neutralization rates were between 6 and 15 equiv m(-2) a(-1). Carbokalk was most effective in stimulating growth of sulfate-reducing bacteria and probably also served as inoculum. With Carbokalk together with wheat straw, the pH increased from 2.6 to around 6.5 within the whole microcosm. The critical revision of the results indicates that the application of Carbokalk (approximately 3.9 kg m(-2)) together with the application of wheat straw (approximately 9.3 kg m(-2)) is most suitable for further experiments in outdoor enclosures (mesocosms). For that case, the prediction of the water quality for a lake water column after multiple lake turnover events is presented based on batch reaction simulation using the geochemical model PHREEQC.

show abstract

Section: Resultssupporting

confidence: 68%

Microcosm Studies for Neutralization of Hypolimnic Acid Mine Pit Lake Water (pH 2.6)

Frömmichen

Wendt‐Potthoff

Friese

et al. 2004

Environ. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…The Cu:Fe ratio obtained from the particulate maxima at 13 m was also 5 ϫ 10 Ϫ3 . Coprecipitation and adsorption of Co, Ni and Mn by FeS has previously been demonstrated in the laboratory under conditions typical of anoxic waters Morse and Arakaki 1993), while Mn scavenging by FeS in Esthwaite Water was previously suggested on the basis of laboratory experiments (Hamilton-Taylor et al 1996b).…”

Section: Sulfide Precipitationmentioning

confidence: 97%

Resolving and modeling the effects of Fe and Mn redox cycling on trace metal behavior in a seasonally anoxic lake

Hamilton−Taylor

Smith

Davison

et al. 2005

Geochimica et Cosmochimica Acta

View full text Add to dashboard Cite

Vertical profiles of the dissolved and particulate (Ͼ0.45 m) concentrations of Fe, Mn, Co, Ni, Cu, Pb, Al and Ba were determined on two occasions (14 and 22 August 1996) during summer stratification in a seasonally anoxic lake (Esthwaite Water, UK). The results were combined with contemporaneous in situ measurements of water-column remobilization of the metals from settling particles at the base of the suboxic zone and other ancillary measurements. The combined data were interpreted with the aid of an equilibrium speciation model (WHAM6), incorporating metal-humic interactions and a surface-complexation description of binding to Fe and Mn oxides. The behavior of all the metals was related in different ways to the position of the O 2 -H 2 S interface and to Fe and Mn redox cycling. In the region of the O 2 -H 2 S interface the behavior of Co and to a lesser degree Ni was dominated by Mn redox cycling. Ba behavior was dominated by the biogenic precipitation and dissolution of barite and to a lesser degree by Mn redox cycling. The behavior of Al was linked to both Mn and Fe redox cycling, although the extent of binding to the oxides and to humic substances was poised with respect to pH. Unlike the other metals, the profiles of Pb and Cu showed little variation above the dissolved sulfide maximum, but modeling indicated that binding of Pb was significant to both Mn and Fe oxides. The featureless nature of the Cu profiles in the upper part of the water column was linked to its overriding association with dissolved humic substances. Below the dissolved sulfide maximum, Co, Ni, Ba, Cu, Pb and Mn were all affected by sulfide precipitation, probably through a common association with FeS. In the case of Co, Ni, Cu and Pb, inverse relationships between the measured dissolved and particulate concentrations were attributed to the coexistence of both filterable and nonfilterable FeS particles and associated mass balance effects. The observed behavior of the metals in relation to the role played by Fe and Mn oxides was generally consistent with WHAM6 predictions. The model predictions highlighted the fact that trace metal speciation in general, and binding to Mn and Fe oxides in particular, can be highly sensitive to the variations in solution conditions found in freshwater systems.

show abstract

“…It would not be practicable to determine a true equilibrium relationship between aqueous and sedimentary metal concentrations, especially in the estuarine environment where the solution pH, Eh, T, and ionic strength change markedly throughout the course of a tidal cycle (Batley and Gardner, 1978;Turner and Millward, 1994;Turner et al, 1993). However, when quantifying metal partitioning behaviour, the adsorption of heavy metals onto natural particles is rapid (5 -15 s (Bunzl et al, 1976)) and quickly approaches equilibrium (Hamilton-Taylor et al, 1996;Hem, 1986). Metal adsorption processes may therefore be effectively modelled using operationally-defined apparent equilibrium expressions (M illw ard and M oore, 1982; Hamilton-Taylor et al, 1997).…”

Section: Calculation O F Apparent Partition Coefficientsmentioning

confidence: 99%

“…This reaction time was considered more than adequate to attain sorption equilibrium (with no further detectable change in dissolved Pb concentration), and was over an order of magnitude greater than similar experiments of trace metal binding onto natural particles carried out on Mersey River sediments (Lead et al, 1997) in which equilibrium was reported. Once the assumed equilibrium had been attained, with respect to the predominant sorption processes such as kinetics of Pb uptake at the sediment surface (Jannasch et al, 1988), Pb d iss o lu tio n k in e tic s from th e sed im en t (Hamilton-Taylor et al, 1996) and sorption onto varying grain-sized particles (Lead et al, 1997), reaction vessels were centrifuged at 7000 rpm for 15 min. The supernatant was extracted from the vessel using a 10 ml Nalgene syringe and passed through a 0.45 mm cellulose nitrate filter and analysed by ICP-AES.…”

Section: Batch Pb Adsorption Experimentsmentioning

confidence: 99%

Metal dispersion in sediments and waters of the River Conwy draining the Llanrwst Mining Field, North Wales

Brydie

Polya

2003

Mineral. mag.

View full text Add to dashboard Cite

The dispersion and sediment-water partitioning of Pb and Zn have been studied in the Conwy River, North Wales. Analysis included major and trace element water chemistry and concentrations of sediment-hosted Pb and Zn. In situ solution pH, Eh, temperature and conductivity were also measured. Sediments were characterized via SEM, XRD, nitric acid leaching and sequential chemical extraction to quantify metal distribution and sediment phase associations. Dissolved and sediment-bound Pb and Zn within river and estuary waters and sediments have been used to calculate whole sediment-and phase-specific apparent partition coefficients.Weathering of galena and sphalerite, associated with the Llanrwst Mining Field, provide point sources of elevated dissolved and sedimentary Pb and Zn in the upper catchment. Dissolved Pb is actively adsorbed onto sedimentary surface coatings of Fe-Mn (hydr)oxides and organics whilst Fe-Mn (hydr)oxides, organics and carbonates were the main hosts for Zn. Systematic changes in metal sorption are evident between the estuary and the upper catchment, with organic matter becoming progressively more important upstream. This change is ascribed to the sorptive properties of sedimentary organic material. Solution pH, [Cl] and aqueous metal speciation are the dominant solution controls on metal partitioning. Laboratory sorption experiments parallel Pb sorption behaviour in the natural system.

show abstract

A laboratory study of the biogeochemical cycling of Fe, Mn, Zn and Cu across the sediment-water interface of a productive lake

Cited by 15 publications

References 33 publications

Microcosm Studies for Neutralization of Hypolimnic Acid Mine Pit Lake Water (pH 2.6)

Microcosm Studies for Neutralization of Hypolimnic Acid Mine Pit Lake Water (pH 2.6)

Resolving and modeling the effects of Fe and Mn redox cycling on trace metal behavior in a seasonally anoxic lake

Metal dispersion in sediments and waters of the River Conwy draining the Llanrwst Mining Field, North Wales

Contact Info

Product

Resources

About