Biosorption of chromium(VI) ions from aqueous solution by the bacterium Bacillus thuringiensis

Şahin, Yasemin; Öztürk, Ayten

doi:10.1016/j.procbio.2004.07.002

Cited by 136 publications

(71 citation statements)

References 19 publications

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“…Further studies are necessary to extend our understanding of the effects of coexisting ions on the Cr(VI) reducing activity of the biomass reported in this study. Cr(VI) reducing capability has been described in some reports in the literature [2][3][4]8,13,15,18,[35][36][37][38]. Biosorption is the second mechanism by which the chromate concentration could be reduced, because the biomass shell can be regarded as a mosaic of different groups that could form coordination complexes with metals, and our observations are like to the most of the reports in the [3,4,8,13,15,18,[35][36][37][38].…”

Section: Time Course Of Cr(vi) Decrease and Cr(iii) Productionsupporting

confidence: 79%

“…The principal techniques for recovering or removing Cr(VI), from wastewater are: chemical reduction and precipitation, adsorption on activated carbon, ion exchange and reverse osmosis in a basic medium [7]. However, these methods have certain drawbacks, namely high cost, low efficiency, generation of toxic sludge or other wastes that require disposal and imply operational complexity [8]. 2 4 CrO  2 2 7 Cr O  In this context, considerable attention has been focused in recent years upon the field of biosorption for the removal of heavy metal ions from aqueous effluents [9].…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Time Course Of Cr(vi) Decrease and Cr(iii) Productionsupporting

confidence: 79%

Section: Introductionmentioning

confidence: 99%

Hexavalent Chromium Removal by Citrus limonium Shell

Vargas-Morales¹,

Bautista-Mata²,

González³

et al. 2012

OJINM

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“…Recently, the removal of metals, compounds and particulates from solution by biological material is recognized as an extension to adsorption and is named as biosorption [11]. Examples of biosorbents are [12], Algae [13], seaweeds [14] microorganisms [15], [16] and several biopolymers [17]. Chitin, which is the major component of carapaces, crusts and shells of crustaceans is the second most abundant organic resource next to cellulose on earth and the most abundant biopolymer in nature that is widely used for the adsorption of heavy metal ions [18], [19].…”

Section: Introductionmentioning

confidence: 99%

Equilibrium and Kinetics Studies of adsorption of Copper (II) Ions on Natural Biosorbent

Farouq¹,

Yousef²

2015

IJCEA

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Abstract-The Biosorption of Copper (II) ions from aqueous solution on natural biosorbent (Mussels) has been investigated. Batch shaking adsorption experiments were performed and equilibrium and kinetic isotherms were tested. Results show that Chitin can remove Copper (II) effectively from aqueous solution. To predict the adsorption isotherms and to determine the characteristic parameters for process design, eight isotherm models:Langmuir, Freundlich, Elovich, Temkin, Fowler-Guggenheim, Jovanovic, Koble-Corrigan, and Hill were applied to experimental data. The equilibrium data were analyzed. The results reveal that the adsorption isotherm models fitted the data in the order: Jovanovic > Freundlich , Koble-Corrigan> Temkin> Fowler-Guggenheim> Elovich> Langmuir, Hill. Adsorption kinetic data were tested using pseudo-first order, pseudo-second order and Elovich model. The kinetics of the adsorption were found to fit the Elovich model.

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“…The theoretical basis of the Langmuir isotherm equation relies on the hypothesis that there are a finite number of binding sites, which are homogeneously distributed over the biosorbent surface and which have the same affinity for adsorption of a single molecular layer. In addition, it is assumed that there is no interaction between the adsorbent and the adsorbate ( ahin and Öztürk, 2005;Aryal et al, 2010). The theory can be represented using the following linear form (Arulkumar et al, 2012): (2) where C e is the equilibrium concentration (mg/L), q e is the amount adsorbed at equilibrium (mg/g), and Q 0 (mg/g) and b (L/mg) are the Langmuir constants related to the adsorption capacity and the energy of adsorption, respectively.…”

Section: Adsorption Isothermmentioning

confidence: 99%

Nickel Ion Adsorption Behavior of Ceriporia lacerata Isolated from Mine Tailings in Korea

Kim¹,

Lim²,

Oh³

et al. 2015

Journal of Soil and Groundwater Environment

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In the present study, surface of laccase producing Ceriporia lacerata was modified using 4-bromobutyryl chloride and polyethylenimine. The modified biomass was freeze dried and utilized as a biosorbent for the removal of Ni(II) from aqueous solution. The physicochemical properties of the biosorbent were analyzed using scanning electron microscopy and Fourier transform infrared spectroscopy. Batch experiments were carried out as a function of contact time (0-60 min), pH (2 to 8), adsorbent dosage (25-150 mg), and initial Ni(II) concentration (25-125 mg/L). The results indicate that surface modified biosorbent effectively adsorbed (9.5 mg/0.1 g biomass) Ni(II) present in the solution. The equilibrium adsorption data were modeled with different kinetic and isotherm models. The Ni(II) adsorption followed pseudo-first-order kinetics (R 2 = 0.998) and Langmuir isotherm (R 2 = 0.994) model. Hydroxyl and carbonyl functional groups present in biomass play a major role in the adsorption of Ni(II). The adsorbed Ni(II) from the biosorbent was successfully desorbed (85%) by 1 M HCl. The results of the study indicate that the surface modified C. lacerate biomass could be used for the treatment of Ni(II) contaminated ground waters.

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Biosorption of chromium(VI) ions from aqueous solution by the bacterium Bacillus thuringiensis

Cited by 136 publications

References 19 publications

Hexavalent Chromium Removal by Citrus limonium Shell

Hexavalent Chromium Removal by Citrus limonium Shell

Equilibrium and Kinetics Studies of adsorption of Copper (II) Ions on Natural Biosorbent

Nickel Ion Adsorption Behavior of Ceriporia lacerata Isolated from Mine Tailings in Korea

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