geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Precipitation of arsenic during bacterial sulfate reduction


, : Precipitation of arsenic during bacterial sulfate reduction. Geomicrobiology Journal 13(1): 1-11

Contaminated sediments from the Milltown Reservoir in western Montana release arsenic and various heavy metals (e.g., Cu, Cd, Pb, Zn, Mn) into an underlying alluvial aquifer as redox conditions in the sediments change with seasonally fluctuating water levels. Porewater analyses indicate that sulfate is depleted with depth. In this study, the feasibility of inducing As(III) precipitation through bacterial reduction of sulfate was evaluated in laboratory microcosms established under strictly anaerobic conditions. As(III), Fe(II), and sulfate concentrations were routinely monitored in the aqueous phase as sulfate was reduced to sulfide. Both As(III) and Fe(II) concentrations in the sediment microcosoms decreased as sulfide was made available. Energy-dispersive x-ray (EDS) analysis indicated that some of the arsenic was precipitated as an iron-arsenic-sulfide solid phase. The precipitation of arsenic observed in this laboratory study suggests that bacterial sulfate reduction may be a process by which heavy metals are immobilized in sediments; however, even though the Milltown sediments contained sulfate-reducing bacteria, their activity appears to be both sulfate and carbon limited.

US$19.90

DOI: 10.1080/01490459509378000


Other references

Churchill, S.; Draper, R.; Marais, E., 1997: Cave utilisation by Namibian bats: Populations, microclimate and roost selection. Ten caves in central Namibia were searched for cave bats during May and June 1996. Up to seven species were found sharing a single cave. Different species of bats were found to select roost sites with significantly different microclimates. based o...

Moriya, H.; Moriwaki, C.; Akimoto, S.; Yamaguchi, K.; Iwadare, M., 1967: Studies on the passage of alpha-chymotrypsin across the intestine. Chemical & Pharmaceutical Bulletin 15(11): 1662-1668

Trykowski L.; Kirkpatrick B.; Lamb R.; Leonard E., 1978: Enhancement of nutritive sucking patterns in premature infants. Pediatric Research 12(4 PART 2): 376

Gompels, B.M.; Votaw, M.L.; Martel, W., 1972: Correlation of radiological manifestations of multiple myeloma with immunoglobulin abnormalities and prognosis. Radiology 104(3): 509-514

Hirvonen, M.R.; Paljärvi, L.; Savolainen, K.M., 1993: Sustained effects of pilocarpine-induced convulsions on brain inositol and inositol monophosphate levels and brain morphology in young and old male rats. Cerebral inositol and inositol monophosphates, products of phosphoinositide (PI) turnover, and neuronal injury were studied in young (10 weeks) and old (24 months) male Wistar rats after pilocarpine-induced convulsions. The goal was to explore the...

Weill, J., 1968: Reticulosis X. Les Cahiers du College de Medecine des Hopitaux de Paris 9(14): 1141-1148

Gauld, R.L.; Goodner, K., 1951: Epidemic typhus vaccine; antibody response to a single dose among persons previously vaccinated. United States Armed Forces Medical Journal 2(9): 1311-1315

Malmquist David L.; Colgan Mitchell W.; Espinoza Rene E., 1986: Evidence for catastrophic vs. attritional mortality in the fossil record; Urvina Bay, Isabela Island, Galapagos Archipelago, Ecuador. Abstracts with Programs - Geological Society of America 18(6): 680

Krone, T.L.; Lambert, R.J., 1995: Maize genotypes developed at three soil nitrogen levels. I. Inbred evaluations. This study was initiated to evaluate the effect of three supplemental nitrogen selection levels used during inbred development on inbred performance per se and inbred response to three supplemental-N rates. Three sets of five RSSSC maize inbreds w...

Miyauchi, K.; Lee, H.S.og; Fukuda, M., 2002: Cloning and characterization of linR, involved in regulation of the downstream pathway for c-hehexachlorocyclohexane degradation in Sphingomonas paucimobilis UT26. Applied and Environmental Microbiology 68(4): 03-7