Effects of metal additions on sulfate reduction activity in wastewaters

Hao, Oliver J.; Huang, Li; Chen, Jin M.; Buglass, Robert L.

doi:10.1080/02772249409358113

Cited by 77 publications

(55 citation statements)

References 10 publications

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“…A concentration of 15 ppm can therefore be considered the maximum concentration of chromium tolerated by these anaerobic cultures. This value is below the levels obtained by Hao et al [12], who found a tolerance of 60 ppm for chromium. The difference in these values could be due to the fact that Hao et al employed enriched SRB cultures from wastewater.…”

Section: Chromium(iii)contrasting

confidence: 45%

“…The reported toxic concentrations of heavy metals to sulphatereducing bacteria range from a few ppm (mg/L) to as much as 100 ppm [11]. Hao et al [12] studied the toxic concentrations of several heavy metals for a mixed culture of sulphate-reducing bacteria: Zn (25-40 ppm), Pb (75-80 ppm), Cu (4-20 ppm), Cd (>4-20 ppm), Ni (10-20 ppm) and Cr (60 ppm). Utgikar et al [11] reported that the effect of heavy metals on SRB can be stimulatory at lower concentrations and toxic/inhibitory at higher concentrations.…”

Section: Introductionmentioning

confidence: 98%

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Toxic effects of dissolved heavy metals on Desulfovibrio vulgaris and Desulfovibrio sp. strains

Cabrera

Pérez

Gómez

et al. 2006

Journal of Hazardous Materials

192

101

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Section: Chromium(iii)contrasting

confidence: 45%

Section: Introductionmentioning

confidence: 98%

Toxic effects of dissolved heavy metals on Desulfovibrio vulgaris and Desulfovibrio sp. strains

Cabrera

Pérez

Gómez

et al. 2006

Journal of Hazardous Materials

192

101

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“…However, the concentration of this element in the BSR layer was already higher than the critical toxicity values, so that bacterial inhibition by this metal is not likely. The rest of metals with known toxicity for SRB were always far below the reported values for critical toxicity (e.g., 20 mg/L for Cd, 20 mg/L for Cu, 20 mg/L for Ni, 60 mg/L for Cr(III), or 75 mg/L Pb; Hao et al 1994;Utgikar et al 2001). A feasible explanation for the observed removal of dissolved sulphide at depth could be related with presence of chemical oxidants.…”

Section: Final Remarks and Conclusionmentioning

confidence: 91%

Formation of biogenic sulphides in the water column of an acidic pit lake: biogeochemical controls and effects on trace metal dynamics

et al. 2014

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Production of H 2 S by bacterial sulphate reduction in the water column of Cueva de la Mora pit lake (SW Spain) may favour an important selfmitigating capacity with respect to metal pollution. The interaction of bacterially produced H 2 S with dissolved metal(loid)s provokes the precipitation of various sulphides, which in turn form a 10 m-thick turbidity layer below the redoxcline. The main goal of this study was to identify the main factors driving the formation of these sulphide precipitates and their impact on the pit lake water quality. Given the severe geochemical conditions found in this lake (low pH, high metal concentrations), our findings may be relevant for a wide spectrum of environmental systems where BSR-based biotechnologies are applied. The water column has been studied by spatially resolved samplings and detailed chemical analyses, physicochemical profiling and geochemical modelling. The suspended particulate matter forming the turbidity has been chemically and mineralogically characterized. Our results suggest that the low pH (3.0-4.0) and the high metal concentrations are not inhibitory for the sulphate-reducing bacteria (SRB). The intensity of sulphide precipitation seems to be closely related with the activity of SRB, which in turn appear to depend on the availability of organic carbon produced in the photic zone. The relative location of oxygen and iron gradients and the redoxcline thickness are influencing the development of the sulphate reducing zone. The most common sulphides are CuS, As 2 S 3 and ZnS, though formation of some other minor phases (PbS, CdS, NiS) has been also detected and/or deduced by geochemical calculations. Metal sulphide precipitation has provoked a complete removal of Cu from the monimolimnion (though it is still present at concentrations of 5.5 mg/L in the mixolimnion) and a net decrease in highly toxic trace metals (Cd, Pb, U, Th) and metalloids (As, Sb).

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“…Reports regarding the toxicity of heavy metals to SRB (8,10,24,27,30,39,42,46,50) have generally been qualitative in nature and have used microbial media designed to optimize growth rather than to examine metal toxicity. Often in these studies the authors reported abiotic formation of metal precipitates and/or significant metal complexation that prevented meaningful quantitative assessment of metal toxicity.…”

mentioning

confidence: 99%

Copper-Induced Inhibition of Growth of Desulfovibrio desulfuricans G20: Assessment of Its Toxicity and Correlation with Those of Zinc and Lead

Sani

Peyton

Brown

2001

Appl Environ Microbiol

186

104

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Effects of metal additions on sulfate reduction activity in wastewaters

Cited by 77 publications

References 10 publications

Toxic effects of dissolved heavy metals on Desulfovibrio vulgaris and Desulfovibrio sp. strains

Toxic effects of dissolved heavy metals on Desulfovibrio vulgaris and Desulfovibrio sp. strains

Formation of biogenic sulphides in the water column of an acidic pit lake: biogeochemical controls and effects on trace metal dynamics

Copper-Induced Inhibition of Growth of Desulfovibrio desulfuricans G20: Assessment of Its Toxicity and Correlation with Those of Zinc and Lead

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