Isolation of Cr(VI) reducing bacteria from industrial effluents and their potential use in bioremediation of chromium containing wastewater

Ahmed, Zubair; Rehman, Abdul

doi:10.1016/s1001-0742(08)62346-3

Cited by 224 publications

(117 citation statements)

References 35 publications

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“…The reduction in case of control might be due to activity of indigenous microorganisms of the wastewater. Zahoor and Rehman (2009) have also observed about 52-62% reduction of Cr (VI) in control set up (effluent without any extraneous addition of microorganism) due to native microflora of wastewater.…”

Section: Resultsmentioning

confidence: 77%

Simultaneous Bioremediation of Phenol and Cr (VI) from Tannery Wastewater Using Bacterial Consortium

Bhattacharya

Gupta

Kaur

et al. 2015

Int J Appl Sci Biotechnol

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In the present study a consortium of four naturally isolated bacterial strains was evaluated as remediation tool for simultaneous removal ofphenol and Cr (VI) from tannery effluent. Application of bacterial consortia to effluent (pH 4.6) resulted in 100 and 78% removal of initial 47mg L-1 phenol and 16 mg L-1 Cr (VI), respectively at 96 h of treatment. The consortium was also active in removal of contaminants with lowerremoval rate in presence of extraneous higher concentrations of both phenol and Cr (VI). Treatment in static mode also resulted in removal ofpollutants, however with increase in agitation speed simultaneous reduction of contaminants becomes faster. Overall it can be inferred fromthe study that the above formulated bacterial consortium could effectively be used for treatment of phenol and Cr (VI) laden tannery and otherindustrial effluents.DOI: http://dx.doi.org/10.3126/ijasbt.v3i1.11889 Int J Appl Sci Biotechnol, Vol. 3(1): 50-55

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Section: Resultsmentioning

confidence: 77%

Simultaneous Bioremediation of Phenol and Cr (VI) from Tannery Wastewater Using Bacterial Consortium

Bhattacharya

Gupta

Kaur

et al. 2015

Int J Appl Sci Biotechnol

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“…Se han reportado un buen número de estudios en los que microorganismos nativos de sitios contaminados con cromo muestran resistencia a este ión, debido a que poseen mecanismos activos o pasivos que les permiten removerlo o destoxificarlo. En ciertas especies se ha identificado la capacidad de remover el cromo por mecanismos de reducción tanto aerobia como anaerobia (Cheung & Gu 2003, Lee et al 2006, Wang et al 2007, Okeke 2008, Yang et al 2009, Zahoor & Rehman 2009 et al 2006), se reportó la capacidad de tolerar el cromato y reducirlo mediante la actividad de una reductasa, combinada con un mecanismo de expulsión de cromo, estas características la hacen muy útil en biorremediación de ambientes contaminados con cromo. Camargo et al (2004), evaluaron otra especie de Bacillus sp.…”

Section: Biorremediación Para La Remocion De Cromounclassified

Producción Limpia Y Biorremediación Para Disminución De La Contaminación Por Cromo en La Industria De Curtiembres

Benítez-Campo¹

2013

AyS

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ResumenEn este documento se presentan algunos acontecimientos que explican los efectos de la relación antropogénica con los recursos naturales como consecuencia de la industrialización. Posteriormente se describe el uso y potencial contaminante del cromo, metal ampliamente utilizado a nivel industrial y se plantean los beneficios de emplear métodos biotecnológicos para la recuperación del cromo en el sector de las curtiembres, con un enfoque preventivo, basándose en los programas de producción más limpia, con el que se propone implementar un manejo integral para disminución de la contaminación por cromo.Palabras claves: Biorremediación, Contaminación industrial, Cromo, Curtiembres, Producción más limpia. Abstract.This paper presents some events that explain the effects of anthropogenic relationship with natural resources as a result of industrialization. Then we describe the use and potential pollution of chromium metal widely used at industrial and consider the benefits of using biotechnological methods for the recovery of chromium in the tanning industry, with a preventive approach, based on cleaner production programs, which management intends to achieve comprehensive approach pollution reduction by chromium.

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“…Like most heavy metals, chromium has toxic effects on both humans and environmental organisms [4]. Trace amount of chromium is required for a variety of enzymes [5][6][7], while accumulation in the human body can cause cancer, growth and developmental abnormalities, neuromuscular control defects, renal malfunction, mental retardation and other illnesses [8].…”

Section: Introductionmentioning

confidence: 99%

“…Staphylococcus aureus is a facultative Gram-positive coccus-shaped bacterium [27] that is best known for its ability to cause a range of illnesses [27,28]. Several recent studies report that S. aureus is involved in environmental metal remediation [4,29] and S. epidermidis which is closely related to S. aureus is able to anaerobically reduce Cr(VI) to Cr (III) [11]. However, there is no direct evidence that S. aureus can reduce Cr(VI).…”

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confidence: 99%

A Novel Subspecies of Staphylococcus aureus from Sediments of Lanzhou Reach of the Yellow River Aerobically Reduces Hexavalent Chromium

Zhang¹,

Krumholz²,

Yu³

et al. 2013

J Bioremed Biodeg

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Background: Lanzhou reach of the Yellow River is contaminated by heavy metals including chromium perennially. The microbial community within the sediment is very active. Yet the study on the bacteria in this distinctive microbial community is still scarce.Results: LZ-01, a Gram-positive hexavalent chromium-reducing bacterium was isolated from the soil sample collected at a petrochemical corporation wastewater discharge site of Lanzhou reach. It was able to aerobically reduce 94.5% of 0.4 mM Cr (VI) to Cr(III) in 120 hours. Cd (II) and NaN 3 treatment both repressed Cr(VI) reduction in LZ-01 and Cr(III) precipitates were detected both on the cell membrane and in the cytoplasm by Transmission Electron Microscopy (TEM) imaging. LZ-01 also demonstrated resistance to 4 mM As (V) and 9 mM U (VI). LZ-01 was closely related to Staphylococcus aureus revealed by 16S rRNA sequence analysis. Comparison of cellular fatty acid components and Vitek phenotype identification provided further evidences that LZ-01 is a novel subspecies of S. aureus. Conclusions:A chromate-reducing bacterium LZ-01 identified as a novel subspecies of S. aureus was isolated from Lanzhou reach of the Yellow River. Cd (II) and NaN 3 treatment and TEM images suggested that Cr(VI) was reduced not only intracellularly but also on the cell membrane. All the results indicate that the isolate has a great potential for bioremediation of Cr (VI)-contaminated environment. Staphylococcus aureus is a facultative Gram-positive coccus-shaped bacterium [27] that is best known for its ability to cause a range of illnesses [27,28]. Several recent studies report that S. aureus is involved in environmental metal remediation [4,29] and S. epidermidis which is closely related to S. aureus is able to anaerobically reduce Cr(VI) to Cr (III) [11]. However, there is no direct evidence that S. aureus can reduce Cr(VI). In this study, we screened the Lanzhou reach river bank soil for Cr(VI) reducers and isolated a novel subspecies of S. aureus strain LZ-01, which reduces Cr(VI) to Cr(III) aerobically. 16S rRNA sequencing and fatty lipids profiling showed that strain LZ-01 is closely related to S. aureus. Comparison of Vitek phenotype identification showed that there were 7 different reactions out of 64 between LZ-01 and type strains of Staphylococcus aureus. LZ-01 reduces Cr(VI) in a highly efficient manner suggesting that it may be useful for Cr(VI) reduction studies in Lanzhou reach. Journal of Bior emediation & Biodegradation Materials and Methods Soil sample collectionThe sampling site was 60 kilometers west of central Lanzhou city and adjacent to the upper reach of the Yellow River. The actual location was close to a petrochemical corporation waste water discharge site. The latitude and longitude of the sampling site is 36°06'N 103°39'E, (Figure 1). The pH of soils at the sampling site ranged from 5.0 to 6.0 with temperature around 18°C at the time of collection. The soil samples were collected from 15 cm below surface horizon and stored in sterile aluminum boxes a...

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Isolation of Cr(VI) reducing bacteria from industrial effluents and their potential use in bioremediation of chromium containing wastewater

Cited by 224 publications

References 35 publications

Simultaneous Bioremediation of Phenol and Cr (VI) from Tannery Wastewater Using Bacterial Consortium

Simultaneous Bioremediation of Phenol and Cr (VI) from Tannery Wastewater Using Bacterial Consortium

Producción Limpia Y Biorremediación Para Disminución De La Contaminación Por Cromo en La Industria De Curtiembres

A Novel Subspecies of Staphylococcus aureus from Sediments of Lanzhou Reach of the Yellow River Aerobically Reduces Hexavalent Chromium

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