Iron Sulfide and Pyrite as Potential Electron Donors for Microbial Nitrate Reduction in Freshwater Wetlands

  title={Iron Sulfide and Pyrite as Potential Electron Donors for Microbial Nitrate Reduction in Freshwater Wetlands},
  author={Suzanne C. M. Haaijer and Leon P. M. Lamers and Alfons J. P. Smolders and Mike S. M. Jetten and Huub J. M. op den Camp},
  journal={Geomicrobiology Journal},
  pages={391 - 401}
The potential of iron sulfide minerals to function as electron donors for microbial nitrate reduction has important consequences for freshwater wetland ecosystems. Nitrate influxes in iron sulfide-rich soils, could ultimately lead to adverse processes, such as internal eutrophication or metal toxicity. In the present study, the potential of two iron sulfide minerals (pyrite and iron sulfide) to function as electron donors for microbial nitrate reduction was investigated in a bioreactor under… 

Anoxic Iron Cycling Bacteria from an Iron Sulfide- and Nitrate-Rich Freshwater Environment

It is indicated that iron-oxidizing nitrate reducers may be of importance to the redox cycling of iron in the groundwater of the study site and illustrates the necessity of employing both culture-dependent and independent methods in studies on microbial processes.

Nitrate Removal by a Novel Lithoautotrophic Nitrate-Reducing, Iron(II)-Oxidizing Culture Enriched from a Pyrite-Rich Limestone Aquifer

The study suggests that NRFeOx mediated by lithoautotrophic bacteria can lead to nitrate removal in anthropogenically impacted aquifers, and analysis of the microbial community composition revealed that the culture is dominated by members of the Gallionellaceae family that are known as autotrophic, neutrophilic, microaerophilic iron(II)-oxidizers.

The Importance of Microbial Iron Sulfide Oxidation for Nitrate Depletion in Anoxic Danish Sediments

Nitrate (NO3−) reduction processes are important for depleting the NO3− load from agricultural source areas before the discharge water reaches surface waters or groundwater aquifers. In this study,

Effects of reduced sulfur speciation and nitrite on the chemolithoautotrophic pyrite oxidation with nitrate : implications for studies of chemolithoautotrophic denitrification

Abstact (English): Pyrite (FeS2) is a major iron- and sulfur-containing mineral phase in earth’s crust. It plays an important role in the global biogeochemical cycles of iron and sulfur. Nitrate

Nitrate reduction coupled with pyrite oxidation in the surface sediments of a sulfide‐rich ecosystem

Most studies of denitrification have focused on organic carbon as an electron donor, but reduced sulfur can also support denitrification. Few studies have reported nitrate (NO3−) reduction coupled

Repeated Anaerobic Microbial Redox Cycling of Iron

The combined chemical and microbiological data suggest that both Geobacter and various Betaproteobacteria participated in nitrate-dependent Fe(II) oxidation in the cycling cultures, which may have important consequences for both the fate of N and the abundance and reactivity of Fe(III) oxides in sediments.

Utilization of iron sulfides for wastewater treatment: a critical review

Acid mine drainage due to weathering of iron sulfide minerals is one of the biggest global environmental issues. However, due to the unique physicochemical properties of natural and synthesized iron

Transformation of iron sulfide to greigite by nitrite produced by oil field bacteria

Nitrate injection into oil fields may lead to NR-SOB-mediated and chemical mineral transformations, increasing the sulfide-binding capacity of reservoir rock and because of mineral volume decreases, these transformations may also increase reservoir injectivity.

Bioremediation of Nitrate- and Arsenic-Contaminated Groundwater Using Nitrate-Dependent Fe(II) Oxidizing Clostridium sp. Strain pxl2

ABSTRACT Groundwater in many parts of the world is contaminated with arsenic and nitrate. To date no technology is available that can in situ remediate arsenic and nitrate pollution of groundwater



Detoxifying toxicants: Interactions between sulfide and iron toxicity in freshwater wetlands

A detoxifying effect of moderate iron concentrations on sulfide toxicity, as well as a toxic effect of high Iron concentrations on the growth of Potamogeton acutifolius are found.

Nitrate and nitrite utilization in sulfate-reducing bacteria.

The geological evidence suggests that microbial reduction of Fe(III) and other metals may have evolved before other respiratory processes, such as sulfate, nitrate and oxygen reduction [7].

Lithotrophic growth ofSulfurospirillum deleyianum with sulfide as electron donor coupled to respiratory reduction of nitrate to ammonia

The ammonia-forming nitrite reductase was an inducible enzyme, expressed when cells were cultivated with nitrate, nitrite, or elemental sulfur, but repressed after cultivation with fumarate, indicating that the enzyme is constitutively expressed.

Microbial leaching of metals from sulfide minerals.

  • I. Suzuki
  • Materials Science, Chemistry
    Biotechnology advances
  • 2001

Evidence for the involvement of betaproteobacterial Thiobacilli in the nitrate-dependent oxidation of iron sulfide minerals.

Use of this new probe Betthio 1001, combined with field measurements, indicates the involvement of Thiobacilli in the process of nitrate-dependent iron sulfide mineral oxidation.

Bacterial Iron Oxidation in Circumneutral Freshwater Habitats: Findings from the Field and the Laboratory

An overview of the microbial iron cycle is presented with an emphasis on the role of microbes that grow under microaerobic conditions at oxic-anoxic transition zones where Fe(II) is abundant.