Mechanism of hexavalent chromium removal by dead fungal biomass of Aspergillus niger

Park, Donghee; Yun, Yeoung‐Sang; Jo, Ji Hye; Park, Jong

doi:10.1016/j.watres.2004.11.002

Cited by 364 publications

(220 citation statements)

References 23 publications

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“…According to this mechanism and as explained by Park et al (2005), a part of Cr(VI) is reduced to Cr(III) by an interaction with the biomass, and mainly, the Cr(VI) is adsorbed while the Cr(III) remains in solution.…”

Section: Anionic Biosorption and Reductionmentioning

confidence: 88%

“…Fungi are well known for their ability to biosorb and bioaccumulate Cr(VI) (Pillichshammer et al 1995;Dursun et al 2003b;Park et al 2005). Several fungi have been studied to be applied to Cr(VI) bioremediation, such as Aspergillus …”

Section: Fungi/cr(vi) Interaction Mechanismsmentioning

confidence: 99%

“…At an acidic pH, the net surface charge of the cell is mainly positive, and the chromate ions bind them easily. As the pH values increase, the net surface charge of the biomass changes to a negative form, decreasing its affinity to the chromate ions (Park et al 2005). …”

Section: Biosorptionmentioning

confidence: 99%

“…Therefore, this mechanism is strongly influenced by the pH, due to the protonation of these functional groups at low values of pH to attract anionic species of Cr(VI) (Saha and Orvig 2010). Park et al (2005) proposed that Cr(VI) adsorption by an A. niger biomass occurs through two mechanisms, which are based on the reduction of Cr(VI) to Cr(III). The first mechanism (direct) occurs when Cr(VI) comes into contact with electron donors of functional groups that are present in the biomass surface at an acidic pH.…”

Section: Anionic Biosorptionmentioning

confidence: 99%

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Metallophilic fungi research: an alternative for its use in the bioremediation of hexavalent chromium

García-Hernández

Villarreal-Chiu

Garza-González

2017

Int. J. Environ. Sci. Technol.

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Contamination by hexavalent chromium has had a large impact on modern society and human health. This problem is a consequence of its great industrial applicability to several products and processes. Short-term exposure to hexavalent chromium can cause irritation, ulceration in skin and stomach and in addition to cancer, dermatitis, and damage to liver, renal circulation and nervous tissues, with even death being observed in response to long-term exposures. Many techniques have been used for the remediation of this pollutant, including physical and chemical approaches and, in more recent years, biological methods. Filamentous fungi isolated from contaminated sites exhibit a significant tolerance to heavy metal; hence, they are an important source of microbiota capable of eliminating hexavalent chromium from the environment. However, these microorganisms can do so in different ways, including biosorption, bioreduction, and bioaccumulation, among others. In this review, we explore several of the most documented mechanisms that have been described for fungi/hexavalent chromium interactions and their potential use in bioremediation.

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Section: Anionic Biosorption and Reductionmentioning

confidence: 88%

Section: Fungi/cr(vi) Interaction Mechanismsmentioning

confidence: 99%

Section: Biosorptionmentioning

confidence: 99%

Section: Anionic Biosorptionmentioning

confidence: 99%

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Metallophilic fungi research: an alternative for its use in the bioremediation of hexavalent chromium

García-Hernández

Villarreal-Chiu

Garza-González

2017

Int. J. Environ. Sci. Technol.

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“…The use of dead cells for metal removal has received greater attention compared to living ones as former is nonhazardous and does not demand the growth media (Awofolu et al 2006). The fungal biomass of Penicillium (Galun et al 1983), Rhizopus arrhizus (Tsezos and Velosky 1982;Tobin et al 1984), Rhizopus oryzae, Aspergillus oryzae (Huang and Huang 1996) and Aspergillus niger (Kapoor et al 1999;Park et al 2005;Awofolu et al 2006) have been used for desalinating the metal ions from aqueous solutions, and it has emerged as one of the most promising process.…”

Section: Introductionmentioning

confidence: 99%

Desalination of Cd2+ and Pb2+ from paint industrial wastewater by Aspergillus niger decomposed Citrus limetta peel powder

Singh

Ali

Jaswal

et al. 2014

Int. J. Environ. Sci. Technol.

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The present research was conducted to study the column mode (down flow and up flow) of Aspergillus niger decomposed Citrus limetta peels powder for desalinating Cd 2? and Pb 2? from synthetic and paint industrial wastewater. The batch mode was carried out to optimize pH, contact time, initial metal ion concentration and adsorbent doses. The column studies (both down flow and up flow) were performed with paint manufacturing industrial wastewater at optimized conditions. The percentage removal, metal uptake capacity and exhaustion time of the column in up flow mode were found to be far better as compared to down flow mode. The value of metal uptake capacity for Cd 2? and Pb 2? was achieved to be 722 and 596 mg g -1 at pH 5.0 and 6.0, respectively, in the first cycle using Thomas model. The comparison of adsorption in single-and multimetal ion systems showed that A. niger decomposed C. limetta peels powder have an excellent potential for the removal metal ions from industrial effluents.

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Biosorption, Metals

Naja¹,

Murphy²,

Volesky³

2010

Encyclopedia of Industrial Biotechnology

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Biosorption is a property of certain types of inactive, dead, microbial biomass to bind certain chemical components and thus also to concentrate heavy metals from even very dilute aqueous solutions. Certain types of biomass exhibit this property, acting just as chemical substances, as ion exchangers of biological origin. It is particularly the cell wall structure of certain algae, fungi and bacteria which was found responsible for this phenomenon. Some biomass types, serving as a basis for metal biosorption processes, can accumulate in excess of 25% of their dry weight in deposited heavy metals such as Pb, Cd, U, Cu, Zn, even Cr and others. Research on biosorption is revealing that it is sometimes a complex phenomenon where the metallic species could be deposited in the solid biosorbent through different sorption processes of ion exchange, complexation, chelation, microprecipitation, etc. A whole new family of suitably “formulated” biosorbents can be used in the process of metal removal and detoxification of industrial metal‐bearing effluents. The sorption packed‐column configuration is the most effective mode of application for the purpose. Recovery of the deposited metals from saturated biosorbent can be accomplished because they can often be easily released from the biosorbent in a concentrated wash solution which also regenerates the biosorbent for subsequent multiple reuse. This and extremely low cost of biosorbents makes the process highly economical and competitive particularly for environmental applications in detoxifying industrial metal‐bearing effluents.

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Mechanism of hexavalent chromium removal by dead fungal biomass of Aspergillus niger

Cited by 364 publications

References 23 publications

Metallophilic fungi research: an alternative for its use in the bioremediation of hexavalent chromium

Metallophilic fungi research: an alternative for its use in the bioremediation of hexavalent chromium

Desalination of Cd2+ and Pb2+ from paint industrial wastewater by Aspergillus niger decomposed Citrus limetta peel powder

Biosorption, Metals

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