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sulfide oxidation definition: The chemical reactions and pathways resulting the conversion of of sulfide to elemental sulfur in a higher oxidation state, or to sulfite or sulfate. [MetaCyc:P222-PWY, MetaCyc:P223-PWY, MetaCyc:PWY-5274, MetaCyc:PWY-5285]
sulfide oxidation, using siroheme sulfite reductase definition: A sulfide oxidation process that proceeds via the reaction catalyzed by siroheme sulfite reductase. [MetaCyc:P223-PWY]
sulfide oxidation, using sulfide:quinone oxidoreductase definition: A sulfide oxidation process that proceeds via the reaction catalyzed by sulfide:quinone oxidoreductase. [MetaCyc:P222-PWY]
sulfide oxidation, using sulfide dehydrogenase definition: A sulfide oxidation process that proceeds via the reaction catalyzed by sulfide dehydrogenase. [MetaCyc:PWY-5274]
sulfide oxidation, using sulfur dioxygenase definition: A sulfide oxidation process that proceeds via the reaction catalyzed by sulfur dioxygenase. [MetaCyc:PWY-5285]
 
Examples
 

As the hydrothermal fluids mix with the ambient seawater, Zn-sulfide clusters and nanoparticles are likely preventing sulfide oxidation by O 2 and reducing bioavailability of S(-II) to organisms.

Heileen Hsu-Kim et al.

Geochemical Transactions 9 (7), 19 May 2008

However, when sulfide is coordinated to Zn, the half-life for sulfide oxidation is approximately 22 days [ 22 ].

Heileen Hsu-Kim et al.

Geochemical Transactions 9 (7), 19 May 2008

Furthermore when dissolved sulfide concentrations are equal to or ten times greater than Cu 2+ concentrations, the half-life for oxidation ranges from 10 min to 30 min in seawater [ 22 ], consistent with our model studies.

Heileen Hsu-Kim et al.

Geochemical Transactions 9 (7), 19 May 2008

Dominant types revealed in these communities are known as key organisms involved in the following processes: (1) anaerobic methane oxidation and sulfate reduction, (2) sulfide oxidation, and (3) a range of (aerobic) heterotrophic processes.

Sander K. Heijs et al.

Microbial Ecology 53 (3), 01 Apr 2007

Linking chemistry, lipid data, and 16S rRNA gene sequencing data to metabolic processes in three depth layers of deep-sea sediment samples, collected from an active seep at Kazan mud volcano (Eastern Mediterranean) Metabolic process Kazan-1 (0–6 cm) Kazan-2 (6–22 cm) Kazan-3 (22–34 cm) 16S a Lipids b Chemistry c 16S a Lipids b Chemistry c 16S a Lipids b Chemistry c Anaerobic oxidation of methane (AOM) − ±* − ++ ++ ++ ++ ++ + Anaerobic sulfate reduction − − − ± ++ ++ ++ ++ ± Aerobic sulfide oxidation + ++ ++ + ± − − − − Heterotrophy (aerobic/anaerobic) ++ ++ ++ ++ ++ ++ ++ ++ ++ *−: No data indicating that this process occurred; ±: weak evidence indicating that this process occurred; +: strong evidence indicating that this process occurred; ++: conclusive data indicating that this process occurred.

Sander K. Heijs et al.

Microbial Ecology 53 (3), 01 Apr 2007

1 further example >>
Publications
 

Formation of Zn- and Fe-sulfides near hydrothermal vents at the Eastern Lau Spreading Center: implications for sulfide bioavailability to chemoautotrophs: ... speciation of dissolved sulfide in the water immediately surrounding deep-ocean hydrothermal vents is critical to chemoautotrophic organisms that are the primary producers of these ecosystems. The objective of this research was to identify the role of Zn and Fe for controlling the speciation of sulfide in the hydrothermal vent fields at the Eastern Lau Spreading Center (ELSC) in the southern Pacific Ocean. Compared to other well-studied hydrothermal systems in the Pacific, the ELSC is notable for unique ridge characteristics and gradients over short distances along the north-south ridge axis. Results In June 2005, diffuse-flow (< 50°C) and high-temperature (> 250°C) vent fluids were collected from four field sites along the ELSC ridge axis. Total and filtered Zn and Fe concentrations were quantified in the vent fluid samples using voltammetric and spectrometric analyses. The results indicated north-to-south variability in vent fluid composition. In the high temperature vent fluids, the ratio of total Fe to total Zn varied from 39 at Kilo Moana, the most northern site, to less than 7 at the other three sites. The concentrations of total Zn, Fe, and acid-volatile sulfide indicated that oversaturation and precipitation of sphalerite (ZnS (s) ) and pyrite (FeS 2(s) ) were possible during cooling of the vent fluids as they mixed with the surrounding seawater. In contrast, most samples were undersaturated with respect to mackinawite (FeS (s) ). The reactivity of Zn(II) in the filtered samples was tested by adding Cu(II) to the samples to induce metal-exchange reactions. In a portion of the samples, the concentration of labile Zn 2+ increased after the addition of Cu(II), indicating the presence of strongly-bound Zn(II) species such as ZnS clusters and nanoparticles. Conclusion Results of this study suggest that Zn is important to sulfide speciation at ELSC vent habitats, particularly at the southern sites where Zn concentrations increase relative to Fe. As the hydrothermal fluids mix with the ambient seawater, Zn-sulfide clusters and nanoparticles are likely preventing sulfide oxidation by O 2 and reducing ...

Heileen Hsu-Kim et al.

Geochemical Transactions , 19 May 2008

Use of 16S rRNA Gene Based Clone Libraries to Assess Microbial Communities Potentially Involved in Anaerobic Methane Oxidation in a Mediterranean Cold Seep: ... sulfate reduction, (2) sulfide oxidation, and (3) a range of ...

Sander K. Heijs et al.

Microbial Ecology , 01 Apr 2007

Influence of soil minerals on chromium(VI) reduction by sulfide under anoxic conditions: ... as Cr(VI)) reduction by sulfide were investigated in the pH range of 7.67 to 9.07 under the anoxic condition. The examined minerals included montmorillonite (Swy-2), illite (IMt-2), kaolinite (KGa-2), aluminum oxide (γ-Al 2 O 3 ), titanium oxide (TiO 2 , P-25, primarily anatase), and silica (SiO 2 ). Based on their effects on Cr(VI) reduction, these minerals were categorized into three groups: (i) minerals catalyzing Cr(VI) reduction – illite; (ii) minerals with no effect – Al 2 O 3 ; and (iii) minerals inhibiting Cr(VI) reduction- kaolinite, montmorillonite, SiO 2 and TiO 2 . The catalysis of illite was attributed primarily to the low concentration of iron solubilized from the mineral, which could accelerate Cr(VI) reduction by shuttling electrons from sulfide to Cr(VI). Additionally, elemental sulfur produced as the primary product of sulfide oxidation could further catalyze ...

Yeqing Lan et al.

Geochemical Transactions , 12 Apr 2007