Biosorption of hexavalent chromium by microorganisms

Vendruscolo, Francielo; Ferreira, Glalber Luiz da Rocha; Filho, Nelson Roberto Antoniosi

doi:10.1016/j.ibiod.2016.10.008

Cited by 137 publications

(60 citation statements)

References 92 publications

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“…The metal uptake by the cell wall has been broadly based on two mechanisms: Uptake directed by functional groups like carboxyl (COOH), hydroxyl (OH) and amine (NH 2 ) group of these compounds. The second uptake mechanism results from physicochemical inorganic interactions directed by adsorption phenomena …”

Section: Resultsmentioning

confidence: 99%

The sorption of cationic and anionic heavy metal species on the biosorbent of Aspergillus terreus: Isotherm, kinetics studies

Shokoohi

Salari

Mahmoudi

et al. 2019

Env Prog and Sustain Energy

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In this study, the capacity of Aspergillus terreus fungus biomass to remove Cr (VI) and Cd from aqueous solution was investigated. The present experimental study employed the shake flask method to cultivate fungal biomass. For the preparation of adsorbent, after inoculation of Aspergillus terreus in PDA medium, it was placed on a shaker at 150 rpm, at 25°C for 4 days. After separation of living biomass, it was boiled in a 0.5% NaOH solution. The ability of the biomass to remove of Cr (VI) and Cd from aqueous solution was examined under conditions including initial concentrations of (20–120 mg/L); pH of 3, 5, 7, and 9; contact times of 15–120 min; and the adsorbent doses of 0.1, 0.2, 0.5, 1, and 2 g. The concentration of the heavy metals was determined by an atomic absorption device. The results showed that in the optimum conditions of the input variables; contact time of 90 min, pH of 7, the initial metal concentration of 20 mg/L, and the adsorbent dose of 1 g, the removal efficiency of Cd and Cr (VI) was 94 and 89%, respectively. The processes of Cd and Cr (VI) adsorption were successfully described by Freundlich isotherm with R2 = 0.9463 and R2 = 0.9949, respectively, and well‐followed pseudo‐first‐order kinetic with R2 = 0.9935 and R2 = 0.9718, respectively. Due to the high adsorption capacity of this biomass in removing metals in comparison to other adsorbents, it can be proposed as a suitable adsorbent in treatment processes.

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Section: Resultsmentioning

confidence: 99%

The sorption of cationic and anionic heavy metal species on the biosorbent of Aspergillus terreus: Isotherm, kinetics studies

Shokoohi

Salari

Mahmoudi

et al. 2019

Env Prog and Sustain Energy

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“…Nickel metal can be recovered using chemical precipitation, electrocoagulation, ion exchange, membrane separation, and chemical adsorption. Among all, adsorption is the most attractive method due to its simplicity, low capital, and operating costs …”

Section: Introductionmentioning

confidence: 99%

Biosorption of nickel from aqueous solution onto Liagora viscida: Kinetics, isotherm, and thermodynamics

Komarabathina

King

Pujari

et al. 2019

Env Prog and Sustain Energy

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The present article addresses the effect of various parameters on batch biosorption of nickel using an inexpensive Liagora viscida algae as a biosorbent. The experimental studies revealed that for an initial metal solution concentration of 20–200 ppm, the equilibrium is achieved after 50 min and the maximum sorption at a pH of 5. Isotherms such as Temkin, Freundlich, and Langmuir were examined. The data are well suitable by using the Langmuir isotherm with a sorption uptake of 22.77 mg/g, confirming that L. viscida can be considered as a low‐cost biosorbent. The dynamic experimental data were represented well by pseudo‐first‐order kinetics. The thermodynamic study revealed that the biosorption of nickel on to L. viscida was endothermic and spontaneous.

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“…Although chromium is vital for living organisms in trace quantities, it is toxic at elevated levels . The US Environmental Protection Agency and the European Union have assigned the maximum permitted discharge level of total chromium into water bodies to below 0.05 mg L −1 . Chromium is present in oxidation states ranging from Cr 2+ to Cr 6+ , but the most stable and common forms are trivalent chromium (Cr(III)) and hexavalent chromium (Cr(VI)), which have varying chemical properties and impinge organisms in different ways .…”

Section: Introductionmentioning

confidence: 99%

“…In contrast, Cr(VI) is considered the most deleterious form of chromium owing to its greater water solubility and bioavailability than Cr(III). It has been estimated that the toxicity of Cr(VI) is 100 times more than that of Cr(III) …”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Critical review on microbial fuel cells for concomitant reduction of hexavalent chromium and bioelectricity generation

Aarthy

Rajesh

Thirunavoukkarasu

2019

J of Chemical Tech & Biotech

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Rapid urbanization and industrialization has led to the indiscriminate discharge of heavy metals into the environment. Hexavalent chromium (Cr(VI)), a lethal, carcinogenic and genotoxic heavy metal frequently found in industrial effluent, poses a serious threat to human health. On the other hand, there is a global energy crisis prevalent owing to the scarcity of resources and huge energy demand. An emerging innovative technology which utilizes the biocatalytic activity of microbes for electron production and offers a dual solution for simultaneous reduction of Cr(VI) and generation of bioelectricity is the microbial fuel cell (MFC). The success of the MFC depends on variables such as cell configuration, pH, electrode materials, effect of microbial communities and operational conditions. This review provides a critical insight on the developments in the field of MFCs with abiotic and biotic cathodes, integrated systems, plant‐ and soil‐based designs for treatment of Cr(VI)‐laden effluent and sustainable energy recovery. © 2019 Society of Chemical Industry

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Biosorption of hexavalent chromium by microorganisms

Cited by 137 publications

References 92 publications

The sorption of cationic and anionic heavy metal species on the biosorbent of Aspergillus terreus: Isotherm, kinetics studies

The sorption of cationic and anionic heavy metal species on the biosorbent of Aspergillus terreus: Isotherm, kinetics studies

Biosorption of nickel from aqueous solution onto Liagora viscida: Kinetics, isotherm, and thermodynamics

Critical review on microbial fuel cells for concomitant reduction of hexavalent chromium and bioelectricity generation

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