How to study Cr(VI) biosorption: Use of fermentation waste for detoxifying Cr(VI) in aqueous solution

Park, Donghee; Yun, Yeoung‐Sang; Kim, Ji Young; Park, Jong

doi:10.1016/j.cej.2007.03.039

Cited by 96 publications

(50 citation statements)

References 26 publications

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“…2a. The reduction rate of Cr(VI) increased with the increase of initial Cr(VI) concentration, which was similar to the observation from Park et al (2008). For the initial Cr(VI) concentration of 25 mg, Cr(VI)/l was completely removed within 54 h, while more time than 174 h was needed for the complete removal of 200 mg/l of Cr(VI), because Cr(VI) ions of 14.7 mg/l were left in the cathode at MFC running time of 174 h.…”

Section: Effects Of Ph and Initial Cr(vi) Concentration On Cr(vi) Redsupporting

confidence: 91%

“…Cr(VI) reduction rate was thus decreased, showing a similar slope at different pH. Our observation was also similar to that of Park et al (2008). Nevertheless, Cr(VI) could be completely removed, even at a relatively higher pH, if sufficient reaction time was given and sustainable electrons by microbial function were supplied from the anode.…”

Section: Effects Of Ph and Initial Cr(vi) Concentration On Cr(vi) Redsupporting

confidence: 88%

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Cathodic reduction of hexavalent chromium [Cr(VI)] coupled with electricity generation in microbial fuel cells

2008

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A novel approach to Cr(VI)-contaminated wastewater treatment was investigated using microbial fuel cell technologies in fed-batch mode. By using synthetic Cr(VI)-containing wastewater as catholyte and anaerobic microorganisms as anodic biocatalyst, Cr(VI) at 100 mg/l was completely removed during 150 h (initial pH 2). The maximum power density of 150 mW/m(2) (0.04 mA/cm(2)) and the maximum open circuit voltage of 0.91 V were generated with Cr(VI) at 200 mg/l as electron acceptor. This work verifies the possibility of simultaneous electricity production and cathodic Cr(VI) reduction.

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Section: Effects Of Ph and Initial Cr(vi) Concentration On Cr(vi) Redsupporting

confidence: 91%

Section: Effects Of Ph and Initial Cr(vi) Concentration On Cr(vi) Redsupporting

confidence: 88%

Cathodic reduction of hexavalent chromium [Cr(VI)] coupled with electricity generation in microbial fuel cells

2008

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“…• anionic adsorption, based on the data from adsorption of anionic Cr VI species on protonated surfaces (at low pH), whereas at high pH, where the number of protonated sites decreases, adsorption of hexavalent chromium is limited due to charge repulsion between the chromic anions and the predominantly negative charge of the biomass surface; • adsorption-coupled reduction, strongly defended by Park et al, based on data from several analytical methods that confirm the formation of Cr ra species during biosorption in the presence of acid [54][55][56]. This data has support from other authors which used electromagnetic spectroscopy to determine the formation of Cr v intermediaries on the biosorption of Cr VI by Arthrobacter sp.…”

Section: A Particular Ion: Biosorption Of Hexavalent Chromiummentioning

confidence: 99%

Biosorption of Heavy Metals – New Perspectives

Tavares¹,

Figueiredo²

2012

Bioremediation and Sustainability

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“…Most of the isolates belonged to the Bacillaceae family and Actinomicetales order, respectively (Camargo et al 2005). The mechanism of ''adsorption-coupled reduction'' was concluded first by Park et al and was widely accepted as the mechanism of Cr(VI) biosorption by abiotic biomaterials such as fermentation waste of Corynebacterium glutamicum, the protonated biomass of brown seaweed, Ecklonia, dead biomass of four fungal strainsAspergillus niger, Rhizopus oryzae, Saccharomyces cerevisiae and Penicillium chrysogenum (Park et al 2005(Park et al , 2008a.…”

Section: Introductionmentioning

confidence: 98%

Influence of magnetic field on Cr(VI) adsorption capability of given anaerobic sludge

Duan

Yan

et al. 2009

Biodegradation

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To provide beneficial guide for the application of the magnetic field in the bio-treatment of the Cr(VI)-contained wastewater, sludge samples from the control bio-system A (absent of magnetic field) and the contrast bio-system B (present of magnetic field) were used to adsorb the synthetic wastewater with 100 mg l(-1) Cr(VI). Influences of two adsorption modes, single adsorption and once continuous adsorption, on the Cr(VI) adsorption capacities of both sludge samples were compared. And the influence of regeneration on the Cr(VI) adsorption capacities were also studied. The results of adsorption experiments showed that the Cr(VI) adsorption capacities of the first single adsorption for sludge sample A and B were pretty nearly, which were 9.79 and 9.93 mg, respectively. And after 5 single adsorption periods, the total Cr(VI) adsorption capacity and efficiency of the sample B were 25.88 and 55.66 mg Cr(VI) g(-1)VSS, while those of the control were 14.95 and 33.98 mg Cr(VI) g(-1)VSS, respectively. For the sludge sample A and B after a single adsorption, both functions of regeneration were remarkable. But after 13 cycles of the single adsorption-regeneration, the Cr(VI) adsorption capacity and efficiency of the sample B were 110.15 and 189.91 mg Cr(VI) g(-1)VSS, while those of the control were 70.89 and 140.38 mg Cr(VI) g(-1)VSS, respectively. Though the Cr(VI) adsorption capacity of a once continuous adsorption period was more than that of a single adsorption period obviously, the Cr(VI) removal rates of the sludge sample A and B in the third period of once continuous adsorption-regeneration were only 8.12 and 33.51%, respectively. It was concluded that the weak magnetic field did improve the Cr(VI) bio-removal efficiency and the sludge stability, the batch treatment was an ideal operation mode for the bio-treatment of the Cr(VI)-contained wastewater, as compared with the continuous operation mode, but regeneration and enough sludge content were two necessary conditions to ensure the efficiency of batch treatment.

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How to study Cr(VI) biosorption: Use of fermentation waste for detoxifying Cr(VI) in aqueous solution

Cited by 96 publications

References 26 publications

Cathodic reduction of hexavalent chromium [Cr(VI)] coupled with electricity generation in microbial fuel cells

Cathodic reduction of hexavalent chromium [Cr(VI)] coupled with electricity generation in microbial fuel cells

Biosorption of Heavy Metals – New Perspectives

Influence of magnetic field on Cr(VI) adsorption capability of given anaerobic sludge

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