Cr(VI) reduction from contaminated soils by Aspergillus sp. N2 and Penicillium sp. N3 isolated from chromium deposits

Fukuda, Toshiro; Ishino, Yasuhiro; Ogawa, Akane; Tsutsumi, Kadzuyo; Morita, Hiroshi

doi:10.2323/jgam.54.295

Cited by 51 publications

(35 citation statements)

References 32 publications

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“…Cr(VI) was first bound to the positively charged complexing groups on fungal surfaces, and then reduced to Cr(III) by adjacent electron-donor compounds (such as glutathione, cysteine, amino acid etc. ), or by chromate reductase excreted by the fungi [49][50][51]. In addition, it is essential to point out that a small proportion of Cr might also be absorbed by AMF as our previous study has confirmed the direct uptake and transport of Cr by ERM [20,21].…”

Section: Distribution and Speciation Of Cr In The Extraradical Mycelimentioning

confidence: 76%

Chromium immobilization by extra- and intraradical fungal structures of arbuscular mycorrhizal symbioses

Zhang

Sun

et al. 2016

Journal of Hazardous Materials

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Section: Distribution and Speciation Of Cr In The Extraradical Mycelimentioning

confidence: 76%

Chromium immobilization by extra- and intraradical fungal structures of arbuscular mycorrhizal symbioses

Zhang

Sun

et al. 2016

Journal of Hazardous Materials

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“…Cr(VI) -resistant organisms are known to produce chromium reductase, which mediates the transfer of electrons from NAD(P)H to Cr(VI), converting it to Cr(III) [25,29,51]. The abilities of Aspergillus and Penicillium species to massively reduce Cr(VI) to Cr(III) have earlier been reported [26,[52][53][54][55].…”

Section: Cr(vi) -Reducing Activity Of Fungal Extractsmentioning

confidence: 99%

Uptake and Reduction of Hexavalent Chromium by Aspergillus Niger and Aspergillus Parasiticus

Shugaba¹,

Buba²,

Bg³

et al. 2012

J Pet Environ Biotechnol

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The uptake and reduction of Cr(VI) by Aspergillus niger and A. parasiticus was studied in this journal. After 96 hours of growth, the culture solutions spiked with an initial dichromate concentration of 20 mg/l, were completely decolorized and had residual Cr(VI) concentrations of only 0.74 ± 0.55 and 1.69 ± 0.29 mg/l in A. niger and A. parasiticus cultures representing Cr(VI) removal of 96.3% and 91.6%, respectively. In the A. niger culture, significantly (P < 0.01) lower Cr(VI) concentrations were observed within 72 hours of growth compared to those of A. parasiticus, but in both cultures complete removal was almost achieved by 144 hours of growth. The rate of Cr(VI) removal was 0.21 ± 0.09 mgl -1 hr -1 and 0.20 ± 0.07 mgl -1 hr -1 for A. niger and A. parasiticus, respectively. Cellular concentrations of Cr(VI) in the two fungi increased significantly (P < 0.05 -0.001) with increasing concentrations of the dichromate treatments. Although tannic acid as sole source of carbon and energy gave significantly lower Cr(VI) removal than glucose (P < 0.001) and acetate (P < 0.01), it supported the removal of about 85.0% and 68.8% of the metal ion by A. niger and A. parasiticus, respectively. The active mycelia of both fungi showed significantly (P < 0.001) higher Cr(VI) removal than inactivated mycelia after incubation at 30°C for 72 hours. Incubation of cell -free extracts of both fungi with NADH at 30°C for 2 hours showed Cr(VI) reduction of 68.0% and 55.5% for A. niger and A. parasiticus, respectively. These findings suggest that uptake and metabolic reduction may be the process by which the two fungi are able to tolerate the toxic effects of hexavalent chromium. However, Cr removal via uptake by the two fungal biomass was observed to be in the range of 0.5 -1.78% only, for all the concentrations applied, which is insignificant when compared with the initial Cr concentration in the culture medium. The results obtained through this investigation indicate the possibility of treating waste effluents containing hexavalent chromium using Aspergillus niger and A. parasiticus.

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“…In particular, this biomass was superior to the other biomass because it has the capacity for efficient chromium reduction under acidic conditions. Many of the Cr(VI) reduction studies were carried out at neutral pH [41]. Aspergillus niger also has the ability to reduce and adsorb Cr(VI) [41].…”

Section: Removal Of Cr(vi) In Industrial Wastes With Citrus Limonium mentioning

confidence: 99%

“…Many of the Cr(VI) reduction studies were carried out at neutral pH [41]. Aspergillus niger also has the ability to reduce and adsorb Cr(VI) [41]. When the initial concentration of Cr(VI) was 500 ppm, A. niger mycelium removed 8.9 mg of chromium/g dry weight of mycelium in 7 days.…”

Section: Removal Of Cr(vi) In Industrial Wastes With Citrus Limonium mentioning

confidence: 99%

Hexavalent Chromium Removal by Citrus limonium Shell

Vargas-Morales¹,

Bautista-Mata²,

González³

et al. 2012

OJINM

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We studied the Chromium(VI) removal capacity in aqueous solution by the lemon shell, using the diphenylcarbazide method to evaluate the metal concentration. So, the highest biosorption of the metal (50 mg/L) occurs within 100 minutes, at pH of 1.0, and 28˚C. According to temperature, the highest removal was observed at 60˚C, in 11 minutes, when the metal (1 g/L) is completely adsorbed. At the analyzed concentrations of Cr(VI), lemon shell, showed excellent removal capacity, besides it removes efficiently the metal in situ (97.2% removal, 7 days of incubation, 5 g of biomass). After 1 hour of incubation the studied biomass reduces 1.0 g of Cr(VI) with the simultaneous production of Cr(III); so it can be used to eliminate it from industrial wastewater.

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Cr(VI) reduction from contaminated soils by Aspergillus sp. N2 and Penicillium sp. N3 isolated from chromium deposits

Cited by 51 publications

References 32 publications

Chromium immobilization by extra- and intraradical fungal structures of arbuscular mycorrhizal symbioses

Chromium immobilization by extra- and intraradical fungal structures of arbuscular mycorrhizal symbioses

Uptake and Reduction of Hexavalent Chromium by Aspergillus Niger and Aspergillus Parasiticus

Hexavalent Chromium Removal by Citrus limonium Shell

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