Kinetics of sulfate reduction and sulfide precipitation rates in sediments of a bar-built estuary (Pescadero, California)

Richards, Chandra M.; Pallud, Céline

doi:10.1016/j.watres.2016.01.044

Cited by 22 publications

(10 citation statements)

References 73 publications

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“…The low in situ aqueous concentrations of hydrogen sulfide coupled to its fast removal via oxidation confirm that direct toxicity to fish as a result of high aqueous hydrogen sulfide concentrations is not likely to occur as the Pescadero estuary transitions from closed to open state, consistent with the conclusions of Richards et al [37,38]. Moreover, the consumption of dissolved oxygen during sulfide-rich sediment disturbances is a significant stressor for fish, leading to severe kills in anoxic waters [20].…”

Section: Implications Of the Direct And Indirect Oxidative Effects Onsupporting

confidence: 77%

“…The oxidation effects of precipitated sulfide minerals imply that dissolved oxygen may also be depleted, as observed elsewhere [28,29,78], leading to anoxic and/or hypoxic conditions that are also detrimental for fish [26,79,80]. Coupled with potentially anoxic and/or hypoxic conditions and a high potential for sulfate reduction to occur in the open state [38], the high sulfate concentrations indicate that sulfate-reducing microorganisms may be operating at near-maximum rates. These conditions lead to greater sediment AVS contents when the estuary is filled and worse water conditions (i.e., acidification and metal dissolution) when the estuary is drained.…”

Section: Implications Of the Direct And Indirect Oxidative Effects Onmentioning

confidence: 99%

“…Moreover, the transition from closed to open state leads to significant decreases in aqueous pH and significant increases in aqueous hydrogen sulfide and Fe concentrations [37], suggesting an important role of sediment AVS oxidation during breaching. Pescadero sediments are rich in AVS [38] yet have trace amounts of pyrite [39]. We investigated the potential maximum effects of sediment resuspension on water conditions in the Pescadero estuary.…”

Section: Introductionmentioning

confidence: 99%

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Effects of sediment resuspension on the oxidation of acid‐volatile sulfides and release of metals (iron, manganese, zinc) in Pescadero estuary (CA, USA)

Richards

Puffelen

Pallud

2018

Enviro Toxic and Chemistry

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Bar-built estuaries are unique ecosystems characterized by the presence of a sandbar barrier, which separates the estuary from the ocean for extended periods and can naturally reopen to the ocean with heavy rainfall and freshwater inflows. The physical effects associated with the transition from closed to open state, specifically water mixing and sediment resuspension, often indirectly worsen water quality conditions and are suspected to drive near-annual fish kills at the Pescadero estuary in northern California. The effects of sediment acid-volatile sulfide (AVS) oxidation, specifically oxygen depletion, acidification, and metal release, are believed to aggravate water conditions for fish but remain poorly understood. We performed slurry incubations containing sediment from 4 sites in the Pescadero estuary, representing a gradient from the Pacific Ocean to freshwater tributaries. We measured near-maximum rates of aqueous hydrogen sulfide oxidation, sediment AVS oxidation, sulfate production, and acidification, as well as near-maximum release rates of iron (Fe), manganese (Mn), and zinc (Zn) to the water column. We estimated AVS oxidation rates of 8 to 21 mmol S kg d , which were 3 orders of magnitude higher than aqueous hydrogen sulfide oxidation rates, 6 to 26 μmol S kg d . We suggest that aqueous hydrogen sulfide cannot be responsible for the observed kills because of low concentrations and minimal oxidative effects on pH and metal concentrations. However, the oxidative effects of AVS are potentially severe, decreasing pH to strongly acidic levels and releasing aqueous Fe, Mn, and Zn concentrations up to 11.2 mM, 0.46 mM, and 88 μM, respectively, indicating a potential role in worsening water conditions for fish in the Pescadero estuary. Environ Toxicol Chem 2018;37:993-1006. © 2017 SETAC.

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Section: Implications Of the Direct And Indirect Oxidative Effects Onsupporting

confidence: 77%

Section: Implications Of the Direct And Indirect Oxidative Effects Onmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of sediment resuspension on the oxidation of acid‐volatile sulfides and release of metals (iron, manganese, zinc) in Pescadero estuary (CA, USA)

Richards

Puffelen

Pallud

2018

Enviro Toxic and Chemistry

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“…Particularly in China, the deposition intensity of N and SO 4 2has continued to increase, making it the third largest N and SO 4 2deposition zone in the world (Saikawa et al, 2009;Liu et al, 2013). A considerable number of studies have demonstrated that N and SO 4 2enrichment have several known effects on biochemical reactions in the soil (Zhang et al, 2007;Richards and Pallud, 2016). Moreover, it may promote the emission of GHG, further contributing to global warming (Estop-Aragonés et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Effects of the addition of nitrogen and sulfate on CH4 and CO2 emissions, soil, and pore water chemistry in a high marsh of the Min River estuary in southeastern China

Wilson

Sun

et al. 2017

Science of The Total Environment

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Exogenous nitrogen (N) and sulfate (SO), resulting from human activity, can strongly influence the emission of CH and CO from soil ecosystems. Studies have reported the effects of N and SO on CH and CO emissions from inland peatlands and paddies. However, very few studies have presented year-round data on the effects of the addition of N and SO on CH and CO emissions in estuarine marshes. The effects of the addition of N and SO on the emission of CH and CO were investigated in a Cyperus malaccensis marsh in the high tidal flat of the Min River estuary of southeastern China from September 2014 to August 2015. Dissolved NHCl, KNO, and KSO were applied every month, in doses of 24gN/SOm·yr. The emission of CH and CO showed distinct monthly and seasonal variations. Compared with the control, the addition of NHCl and NHNO+KSO showed increases in CH fluxes (p<0.05), while the effects of the addition of KNO and KSO on CH were minor (p>0.05). NHCl had a positive impact on CO emissions (p<0.01), while the addition of KNO, KSO, and NHNO+KSO had minor positive impacts, compared to the control (p>0.05). Correlation analysis found that soil sulfate concentration, nitrogen availability and enzyme activity were the dominant factors influencing CH and CO variation. Our findings suggest that CH and CO emissions were influenced more by ammonium than by nitrate. We propose that the suppressive effect of additional sulfate on CH production is insignificant, due to which the inhibition may be overestimated in the estuarine brackish marsh.

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“…LaBar and Nairn () showed that most of the Zn, Cd, Pb, and Ni mass were removed from the synthetic water by the processes of adsorption to organic substrate materials and precipitation as sulfides. Since both these processes are known to occur over the timeframe of minutes to hours (Arshadi et al ; Richards and Pallud ), it is likely that in this case the low residence times in the C3S pond bed pose no immediate threat to the system performance (Table ). This is supported by the continually low metal concentrations in the effluent of C3S, as reported by LaBar and Nairn ().…”

Section: Metal Removal Ratesmentioning

confidence: 99%

Assessment of Bed Hydraulics and Metal Loadings in a Passive Vertical Flow Bioreactor in Commerce, Oklahoma

Cremeans¹,

Devlin²,

Osorno³

et al. 2019

Groundwater Monitoring Rem

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A treatment pond, with an engineered bed that served as a passive vertical flow bioreactor (VFBR), was operated as part of a passive sequenced treatment system for the removal of metals from groundwater at the Mayer Ranch in Commerce, Oklahoma. The groundwater was contaminated by mining activities in west Commerce and discharges at this location occurred as artesian springs through improperly abandoned, over‐drilled, and cased legacy boreholes. The VFBR operated by establishing reducing conditions in the organic bed of a pond to promote metal sorption and precipitation as sulfides. In order to verify that operations were unhindered by nonuniform flow in the VFBR, an assessment of the flow uniformity in the pond was undertaken using the streambed point velocity probe (SBPVP). The velocity data were independently validated with a water balance. The outflow calculated from the SBPVP data came within 30% of the value suggested by measured inflow rates to the pond, supporting the conclusion that the SBPVP measurements were representative of flow in the VFBR, and that flow through the bed was occurring with a satisfactory level of uniformity. Water flow rates through the reactive bed were found to be up to an order of magnitude greater than those employed in the prior column testing, contributing to metal loading rates (of Cd, Pb, Zn, Ni) estimated to be two orders of magnitude greater than those tested in the columns (4.2 × 104 and 3.2 × 102 mg/m3/d, respectively). However, apparently rapid chemical reactions that likely occurred close to the pond water‐sediment interface contributed to the treatment system achieving its design objectives.

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Kinetics of sulfate reduction and sulfide precipitation rates in sediments of a bar-built estuary (Pescadero, California)

Cited by 22 publications

References 73 publications

Effects of sediment resuspension on the oxidation of acid‐volatile sulfides and release of metals (iron, manganese, zinc) in Pescadero estuary (CA, USA)

Effects of sediment resuspension on the oxidation of acid‐volatile sulfides and release of metals (iron, manganese, zinc) in Pescadero estuary (CA, USA)

Effects of the addition of nitrogen and sulfate on CH4 and CO2 emissions, soil, and pore water chemistry in a high marsh of the Min River estuary in southeastern China

Assessment of Bed Hydraulics and Metal Loadings in a Passive Vertical Flow Bioreactor in Commerce, Oklahoma

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