Microbial mobilization of barite

Bolze, Claude E.; Malone, Philip G.; Smith, Michael J.

doi:10.1016/0009-2541(74)90006-0

Cited by 62 publications

(29 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Diversos trabalhos evidenciam que em solos com valores baixos de Eh (< -220 mV) e na presença de BaSO 4, bactérias redutoras de sulfato são responsáveis pela solubilização e aumento do bário em solução. 10,34,35 A Figura 3 apresenta a quantidade de bário removido por cada volume coletado no lixiviado e o total removido em função das doses aplicadas e níveis de umidade. A remoção de bário ocorreu de forma diferenciada, principalmente, em função das doses aplicadas e aumentaram de forma significativa e linear.…”

Section: Figura 1 Valores De Potencial De Oxirredução (Eh) Para Doisunclassified

Mobilidade de bário em solo tratado com sulfato de bário sob condição de oxidação e redução

Magalhães¹,

Sobrinho²,

Zonta³

et al. 2011

Quím. Nova

View full text Add to dashboard Cite

Section: Figura 1 Valores De Potencial De Oxirredução (Eh) Para Doisunclassified

Mobilidade de bário em solo tratado com sulfato de bário sob condição de oxidação e redução

Magalhães¹,

Sobrinho²,

Zonta³

et al. 2011

Quím. Nova

View full text Add to dashboard Cite

“…Sulfates may be converted to sulfides and sulfites under reducing conditions. Many soil microorganisms have the ability to reduce various minerals and have been shown to be capable of reducing sulfates (Bolze, Malone and Smith, 1974;Gilkeson, Perry and Cartwright, 1981). This activity would reasonably be expected to increase the solubilization of radium from scales and sludges when these are incubated with soil.…”

Section: Leaching Of Radioactivity From Scale and Sludge Samplesmentioning

confidence: 99%

Evaluations of Radionuclides of Uranium, Thorium, and Radium Associated With Produced Fluids, Precipitates, and Sludges From Oil, Gas, and Oilfield Brine Injection Wells in Mississippi

Swann¹,

Matthews²,

Ericksen³

et al. 2004

View full text Add to dashboard Cite

Naturally occurring radioactive materials (NORM) are known to be produced as a byproduct of hydrocarbon production in Mississippi. The presence of NORM has resulted in financial losses to the industry and continues to be a liability as the NORM-enriched scales and scale encrusted equipment is typically stored rather than disposed of. Although the NORM problem is well known, there is little publically available data characterizing the hazard. This investigation has produced base line data to fill this informational gap.A total of 329 NORM-related samples were collected with 275 of these samples consisting of brine samples. The samples were derived from 37 oil and gas reservoirs from all major producing areas of the state. The analyses of these data indicate that two isotopes of radium ( 226 Ra and 228 Ra) are the ultimate source of the radiation. The radium contained in these co-produced brines is low and so the radiation hazard posed by the brines is also low. Existing regulations dictate the manner in which these salt-enriched brines may be disposed of and proper implementation of the rules will also protect the environment from the brine radiation hazard. Ra content, and relationships exist between total dissolved solids, BaSO 4 saturation and concentration of the Cl ion. Principal component analysis points to geological controls on brine chemistry, but the nature of the geologic controls could not be determined.The NORM-enriched barite (BaSO 4 ) scales are significantly more radioactive than the brines. Leaching studies suggest that the barite scales, which were thought to be nearly insoluble in the natural environment, can be acted on by soil microorganisms and the enclosed radium can become bioavailable. This result suggests that the landspreading means of scale disposal should be reviewed. This investigation also suggests 23 specific components of best practice which are designed to provide a guide to safe handling of NORM in the hydrocarbon industry. The components of best practice include both worker safety and suggestions to maintain waste isolation from the environment.

show abstract

“…Barite has low solubility in water (2.47 mg/l at 25 o C); however barium can be mobilized as Ba 2+ by microbial activity. SRB has been reported to use barite as a sulfate source for respiration (Baldi et al, 1996;Bolze et al, 1974;McCready and Krouse, 1980), resulting in free dissolved Ba 2+ which is known to cause muscular paralysis (Reeves, 1986).…”

Section: Introductionmentioning

confidence: 99%

Biodegradation of BTEX and Other Petroleum Hydrocarbons by Enhanced and Controlled Sulfate Reduction

Jin¹

2007

View full text Add to dashboard Cite

High concentrations of sulfide in the groundwater at a field site near South Lovedale, OK, were inhibiting sulfate reducing bacteria (SRB) that are known to degrade contaminants including benzene, toluene, ethylbenzene, and m+p-xylenes (BTEX). Microcosms were established in the laboratory using groundwater and sediment collected from the field site and amended with various nutrient, substrate, and inhibitor treatments. All microcosms were initially amended with FeCl 2 to induce FeS precipitation and, thereby, reduce sulfide concentrations. Complete removal of BTEX was observed within 39 days in treatments with various combinations of nutrient and substrate amendments. Results indicate that elevated concentration of sulfide is a limiting factor to BTEX biodegradation at this site, and that treating the groundwater with FeCl 2 is an effective remedy to facilitate and enhance BTEX degradation by the indigenous SRB population.On another site in Moore, OK, studies were conducted to investigate barium in the groundwater. BTEX biodegradation by SRB is suspected to mobilize barium from its precipitants in groundwater. Data from microcosms demonstrated instantaneous precipitation of barium when sulfate was added; however, barium was detected redissolving for a short period and precipitating eventually, when active sulfate reduction was occurring and BTEX was degraded through the process. SEM elemental spectra of the evolved show that sulfur was not present, which may exclude BaSO 4 and BaS as a possible precipitates. The XRD analysis suggests that barium probably ended in BaS complexing with other amorphous species. Results from this study suggest that SRB may be able to use the sulfate from barite (BaSO 4 ) as an electron acceptor, resulting in the release of free barium ions (Ba 2+

show abstract

Microbial mobilization of barite

Cited by 62 publications

References 0 publications

Mobilidade de bário em solo tratado com sulfato de bário sob condição de oxidação e redução

Mobilidade de bário em solo tratado com sulfato de bário sob condição de oxidação e redução

Evaluations of Radionuclides of Uranium, Thorium, and Radium Associated With Produced Fluids, Precipitates, and Sludges From Oil, Gas, and Oilfield Brine Injection Wells in Mississippi

Biodegradation of BTEX and Other Petroleum Hydrocarbons by Enhanced and Controlled Sulfate Reduction

Contact Info

Product

Resources

About