Chromium (VI) biosorption and bioaccumulation by chromate resistant bacteria

Srinath, Thiruneelakantan; Verma, Tuhina; Ramteke, Pramod W.; Garg, Shweta

doi:10.1016/s0045-6535(02)00089-9

Cited by 467 publications

(205 citation statements)

References 36 publications

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“…Thus, the adsorptive separation of Cr(VI) by microorganisms [1][2][3][4][5][6], algae [7], and plant biomass [8,9] have been investigated. Many of these studies focused on the adsorption of Cr(VI) under strongly acidic conditions (pH [1][2][3] because the adsorption amount of Cr(VI) onto these biomaterials steeply decreased above pH 3. It may be possible to control the water's pH in the industrial waste water treatment process, however, it is impossible to control the natural water's pH in the environmental remediation process.…”

Section: Introductionmentioning

confidence: 99%

Biosorption of chromium(VI) and arsenic(V) onto methylated yeast biomass

Seki

Suzuki

Maruyama

2005

Journal of Colloid and Interface Science

137

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Yeast biomass was methylated in a 0.1 M HCl methyl alcohol solution at room temperature and the methylated yeast (MeYE) was applied to the adsorptive separation of Cr(VI) and As(V) anions from aqueous solutions.At near neutral pH, while Cr(VI) and As(V) anions were scarcely adsorbed onto unmethylated yeast biomass, their adsorbed amounts increased with increasing methylation degree. The amount of Cr(VI) adsorbed onto MeYE was almost constant at pH4 -6 and decreased with increasing pH above pH 6. The adsorbed amount of As(V) onto MeYE was rather lower than that of Cr(VI) and it had a peak at about pH 7. A metal-binding model was used to describe the adsorption characteristics of Cr(VI) and As(V) onto MeYE.The results showed that MeYE has two different types of adsorption sites.The saturated adsorbed amount of Cr(VI) and As(V) onto MeYE having methylation degree 0.94 was 0.55 mmol g -1 .

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Section: Introductionmentioning

confidence: 99%

Biosorption of chromium(VI) and arsenic(V) onto methylated yeast biomass

Seki

Suzuki

Maruyama

2005

Journal of Colloid and Interface Science

137

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“…Acredita-se que os microrganismos que vivem em ambientes contaminados com Cr (VI) valem-se da redução enzimática de Cr (VI) em Cr (III) como modo de defesa. Os processos de bioacumulação, biosorção e redução enzimática permitem que os micro-organismos removam/e recuperem os metais menos tóxicos devido à interação dos micro-organismos com tais metais (Srinath et al, 2002).…”

Section: Ufscar -São Carlos -Sp 16 a 19 De Julho De 2017unclassified

Avaliação Do Processo De Dessorção Do Cromo Em Meio De Cultura Por Cultura Microbiana Mista

Delatin¹,

Dias²,

Cardoso³

et al. 2017

Blucher Chemical Engineering Proceedings

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RESUMO -Neste trabalho foi analisado a dessorção do cromo total e cromo (VI) após a bioadsorção de efluente sintético com concentração inicial de cromo de 100 mg L -1 . O pH do meio foi de 7,33 utilizou-se cultura microbiana mista e avaliou-se a troca do meio de cultura e não troca do meio de cultura no processo de dessorção do cromo. Os resultados indicaram que os microrganismos dessorveram quantidades insignificantes de Cr(VI) nos dois casos e de cromo total no caso em que não houve troca do meio de cultura a dessorção foi de 5,97 mg L -1 e com troca do meio de cultura houve 5 mg L -1 de dessorção. A contagem de células viáveis após 120 horas de amostras manteve próximas dos valores iniciais, 2,0 x 10 9 UFC mL -1 (unidade formadora de colônia por mililitro) para o experimento com troca de meio de cultura e 3,0 x 10 9 UFC mL -1 para o experimento sem troca de meio, concluindo que não houve influencia significante na reprodução microbiana.

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“…The heavy metal from aqueous solution can be removed by passive binding with nonliving biomass through biosorption process (Kumar and Oommen 2012). The technique of using micro-organism to reduce level of metal contamination is better than conventional separation techniques because of reusability of biomaterial, low operating cost and improved selectivity for specific metals of interest and short operation time (Srinath et al 2002). The biosorption process is a new technology, which can easily use as a refining treatment in shallow bodies of water (Nirmal Kumar et al 2006).…”

Section: Strategies To Reduce Metal Contamination From Aquatic Systemmentioning

confidence: 99%

Remediation of heavy metal contaminated ecosystem: an overview on technology advancement

Singh

Prasad

2014

Int. J. Environ. Sci. Technol.

136

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The issue of heavy metal pollution is very much concerned because of their toxicity for plant, animal and human beings and their lack of biodegradability. Excess concentrations of heavy metals have adverse effects on plant metabolic activities hence affect the food production, quantitatively and qualitatively. Heavy metal when reaches human tissues through various absorption pathways such as direct ingestion, dermal contact, diet through the soil-food chain, inhalation and oral intake may seriously affect their health. Therefore, several management practices are being applied to minimize metal toxicity by attenuating the availability of metal to the plants. Some of the traditional methods are either extremely costly or they are simply applied to isolate contaminated site. The biology-based technology like use of hypermetal accumulator plants occurring naturally or created by transgenic technology, in recent years draws great attention to remediate heavy metal contamination. Recently, applications of nanoparticle for metal remediation are also attracting great research interest due to their exceptional adsorption and mechanical properties and unique electrical property, highly chemical stability, and large specific surface area. Thus, the present review deals with different management approaches to reduce level of metal contamination in soil and finally to the food chain.

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Chromium (VI) biosorption and bioaccumulation by chromate resistant bacteria

Cited by 467 publications

References 36 publications

Biosorption of chromium(VI) and arsenic(V) onto methylated yeast biomass

Biosorption of chromium(VI) and arsenic(V) onto methylated yeast biomass

Avaliação Do Processo De Dessorção Do Cromo Em Meio De Cultura Por Cultura Microbiana Mista

Remediation of heavy metal contaminated ecosystem: an overview on technology advancement

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