Evaluation of bioremediation and detoxification potentiality of Aspergillus niger for removal of hexavalent chromium in soil microcosm

Srivastava, Shaili; Thakur, Indu Shekhar

doi:10.1016/j.soilbio.2005.12.016

Cited by 103 publications

(39 citation statements)

References 23 publications

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“…This result is in agreement with similar findings reported by Srivastava and Thakur [8] in Acinetobacter sp. PCP3 strain.…”

Section: Transmission Electron Microscope (Tem) Analysissupporting

confidence: 94%

“…Alternative methods of metal removal and recovery based on biological materials have been considered [5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

“…Strain AB1, an environmental isolate from Fez tanneries. Many strains belonging to Acinetobacter genus were known by their chromium bio-accumulation and biosorption activities [8,10,11].…”

Section: Introductionmentioning

confidence: 99%

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Hexavalent Chromium Reduction and Accumulation by Acinetobacter AB1 Isolated from Fez Tanneries in Morocco

et al. 2011

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Hexavalent chromium reduction and accumulation by Acinetobacter AB1 isolated from Fez tanneries effluents were tested. The effects of some environmental factors such as pH, temperature, and exposure time on Cr(VI) reduction and resistance were investigated. We found that this strain was able to resist to concentrations as high as 400 mg/l of Cr(VI). Moreover, pH 10 and the temperature 30°C constitute favourable conditions to the growth and reduction of Acinetobacter AB1. Complete reduction of Cr(VI) was observed at low initial Cr(VI) concentrations of 50 mg/l after 72 h of incubation. Furthermore, Transmission electron microscope (TEM) analysis showed morphological changes in AB1 strain due 48H exposure to 100 mg/l chromate concentration and revealed circular electron dense (dark black point) inclusion within the cell cytoplasm suggesting chromium deposition within the cells.

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“…This result is in agreement with similar findings reported by Srivastava and Thakur [8] in Acinetobacter sp. PCP3 strain.…”

Section: Transmission Electron Microscope (Tem) Analysissupporting

confidence: 94%

“…Alternative methods of metal removal and recovery based on biological materials have been considered [5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

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Hexavalent Chromium Reduction and Accumulation by Acinetobacter AB1 Isolated from Fez Tanneries in Morocco

et al. 2011

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“…The sample was placed in oven at 110°C for 24 h. It was then removed and weighed to obtain bone dry weight of the sample. Percent water holding capacity was calculated as (Srivastava and Thakur, 2006): Cassava tubers where obtained from Samaru market and identified in the Biological Science Department of Ahmadu Bello University, Zaria. The cassava used was identified as Manihot esculenta (Crantz).…”

Section: Procurement and Preparation Of Materialsmentioning

confidence: 99%

Earthworm-assisted bioremediation of petroleum hydrocarbon contaminated soil from mechanic workshop

Ameh¹,

Mohammed-Dabo²,

Ibrahim³

et al. 2013

Afr. J. Environ. Sci. Technol.

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“…Chromium is removed by cellular metabolism of microorganisms, mainly by bioaccumulation, biosorption and biotransformation. The previous investigations describe the applications of living and dead microorganism cells to remove Cr(VI) from water solutions by biosorption [9][10][11][12][13][14] and bioaccumulation [9,[15][16][17][18][19][20][21][22][23][24][25]. Each of these methods has its advantages and disadvantages.…”

Section: Introductionmentioning

confidence: 99%

Hexavalent Chromium Accumulation by Microscopic Fungi

Hołda

2013

Archives of Environmental Protection

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Abstract:The purpose of the study was to optimize the removal of Cr(VI) by means of the Trichoderma viride strain isolated from chromium mud samples a well as the Aspergillus niger and Penicillium citrinum strains from other environments. The growth of organism and removal of chromium(VI) was carried out in water solution of various chromium(VI) contents. The research was carried out at optimal pH for each fungus i.e. Aspergillus niger 4.0, Penicillium citrinum 5.0 and Trichoderma viride 4.5. During 14 days of incubation, samples of 5 ml each were collected every day in order to determine chromium(VI) content in the solution and the effi ciency of bioaccumulation of this element was then specifi ed. Furthermore, chromium contents in fi ltrate and mycelium were checked to verify this type of biological activity of microorganisms. The fungi culture investigated in this study could grow at 10-125 mg/l chromium concentration which indicated that it was characterized by high tolerance to various concentrations of chromium. At 125 mg/l chromium, these organisms could accumulate successfully about 90% of chromium. High tolerance of this culture can make it a potential candidate to be a heavy metal scavenger of chromium.

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Evaluation of bioremediation and detoxification potentiality of Aspergillus niger for removal of hexavalent chromium in soil microcosm

Cited by 103 publications

References 23 publications

Hexavalent Chromium Reduction and Accumulation by Acinetobacter AB1 Isolated from Fez Tanneries in Morocco

Hexavalent Chromium Reduction and Accumulation by Acinetobacter AB1 Isolated from Fez Tanneries in Morocco

Earthworm-assisted bioremediation of petroleum hydrocarbon contaminated soil from mechanic workshop

Hexavalent Chromium Accumulation by Microscopic Fungi

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