Biosorption of Cd(II), Ni(II) and Pb(II) from Aqueous Solution by Dried Biomass of <i>Aspergillus niger</i>: Application of Response Surface Methodology to the Optimization of Process Parameters

Amini, Malihe; Younesi, Habibollah

doi:10.1002/clen.200900090

Cited by 81 publications

(39 citation statements)

References 62 publications

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“…2 shows that the isothermal data better conformed to Freundlich equation. The maximum capacity (q m , mmol/g) was found to be 0.0769 mmol/g and is significantly higher than those reported in reference [2] and references therein. Accordingly, the nano magnetite particles could serve as an adsorbent to remove nickel ions from aqueous solutions.…”

Section: Adsorption Isothermscontrasting

confidence: 62%

“…Presently, considerable attention has been given to the methods for their removal from industrial wastewaters. Conventional methods for removing heavy metals ions form aqueous solutions principally include chemical precipitation, ion-exchange, reverse osmosis, and adsorption (bioadsorption) [1,2]. Although the effectiveness of these processes has been sufficiently proven, they present some inconveniences and limitations due to high energy requirements, incomplete metal removal, and a large amount of sludge production [3].…”

Section: Introductionmentioning

confidence: 99%

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Removal of Ni(II) from Aqueous Solutions by Nanoscale Magnetite

Wang

Ren

et al. 2010

CLEAN Soil Air Water

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Magnetite nanoparticles were applied to remove Ni(II) from aqueous solutions as a function of pH, contact time, supporting electrolyte concentration, and analytical initial Ni(II) concentration. The highly crystalline nature of the magnetite structure with diameter of around 10 nm was characterized with transmission electron microscopy (TEM) and X-ray diffractometry (XRD). The surface area was determined to be 115.3 m 2 /g. Surface chemical properties of magnetite at 258C in aqueous suspensions were investigated. The point of zero charge (pHzpc) was found to be 7.33 and the intrinsic acidity constants (pK s a1 and pK s a2 ) were found to be 9.3 and 5.9, respectively. The surface functional groups were investigated with Fourier transform-infrared spectroscopy (FTIR) as well. Batch experiments were carried out to determine the adsorption kinetics and mechanism of Ni(II) by these magnetite nanoparticles. The adsorption process was found to be pH dependent. In NaCl solutions, Ni(II) adsorption increased with increasing ionic strength while in NaClO 4 solutions, Ni(II) adsorption exhibited little dependence on the ionic strength of the solution. The adsorption process better followed the pseudo-second order equation and Freundlich isotherm.

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Section: Adsorption Isothermscontrasting

confidence: 62%

Section: Introductionmentioning

confidence: 99%

Removal of Ni(II) from Aqueous Solutions by Nanoscale Magnetite

Wang

Ren

et al. 2010

CLEAN Soil Air Water

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“…The RSM consist of a group of empirical techniques devoted to the evaluation of the relationship existing between the independent variables and measured responses [34].…”

Section: Box-behnken Methodology For Dye Decolorizationmentioning

confidence: 99%

Laccase production and dye decolorization by Trametes versicolor: Application of Taguchi and Box-Behnken methodologies

Gedikli¹,

Buruk²,

Çabuk³

et al. 2014

Turk J Bioch

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Objective: The aim of this study was to investigate the laccase production of Trametes versicolor under submerged fermentation condition. Then, dye decolorization by laccase was optimized using Box-Behnken methodology. Methods: The optimal culture conditions for producing high amount of laccase were determined using Taguchi methodology. The experiments were designed with five factors (glucose, yeast extract, CuSO 4 , inoculum size and pH) at three levels with orthogonal array layout of L27 (3 5 ). Then, the optimum conditions for high decolorization activity of Reactive Blue 49 by obtained crude laccase were also investigated using Box-Behnken methodology. Results: The optimum culture conditions for production of high amounts of laccase were detected as 2 g L -1 of glucose, 5 g L -1 of yeast extract, 2mM of CuSO 4 , 4% of inoculum amount and pH 5.5. Yeast extract was the most effective factor, followed by CuSO 4 , inoculum, glucose and pH. Under these conditions, predicted values were in a good agreement with the actual experimental one. The predicted results showed that the maximum of Reactive Blue 49 decolorization as 98% could be obtained under the optimum conditions of pH 2.95, initial dye concentration 55.6 mg L -1 , enzyme amount 0.76 mL and reaction time 46.91 min. The validity and practicability of this statistical optimization strategy was confirmed with the relation between predicted and experimental values. Conclusion:The results suggested that Taguchi method can be used in the optimization of laccase production process. Production of laccase by Trametes versicolor 2008001 can be effectively used for enzymatic decolorization according to the results of decolorization experiments in optimal levels. Key Words: Laccase, Taguchi Method, Box-Behnken Methodology, dye decolorization. Conflict of Interest:The authors declare no conflict of interest. Materials and Methods Microorganism, culture conditions and dyeTrametes versicolor ATCC (200801) originally isolated and cultured by Dr. O Yesilada was used in this study. This fungus was subcultured on Malt Extract Agar (MA) plates of 30 °C and stored at 4 °C.Laccase production of T. versicolor was tested under agitated culture conditions. To this end, firstly this fungus was cultured at 30 ˚C on slant MA for one week. Then, mycelial suspension was prepared and this suspension was inoculated into 250 mL Erlenmeyer flask containing 100 mL Potato Dextrose Broth (PDB). This culture was incubated at 30 °C and 150 rev min -1 for 4 days. After that, the culture was homogenized and determined culture of homogenized culture was transferred in 250 mL Erlenmeyer flasks with 100 mL Stock Basal Medium (SBM) that contain K 2 PO 4 : 0.2 g L

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“…A similar results were observed with Fan et al [33], who reported that maximum biosorption capacity for Zn(II) by Penicillium simplicissimum was achieved at pH 6.0. On the other hand, Vullo et al [34] concluded that the optimum pH for Zn(II) was achieved at pH 7.5 with Pseudomonas veronii 2E, Amini and Younesi [35] found a biosorption of Cd(II) at pH 6.01 for Asperigillus niger.…”

Section: Effect Of Phmentioning

confidence: 97%

Biosorption of Cd(II) and Zn(II) by Nostoc commune: Isotherm and Kinetics Studies

Morsy

Hassan

Koutb

2011

CLEAN Soil Air Water

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In this study, Nostoc commune (cyanobacterium) was used as an inexpensive and efficient biosorbent for Cd(II) and Zn(II) removal from aqueous solutions. The effect of various physicochemical factors on Cd(II) and Zn(II) biosorption such as pH 2.0-7.0, initial metal concentration 0.0-300 mg/L and contact time 0-120 min were studied. Optimum pH for removal of Cd(II) and Zn(II) was 6.0, while the contact time was 30 min at room temperature. The nature of biosorbent and metal ion interaction was evaluated by infrared (IR) technique. IR analysis of bacterial biomass revealed the presence of amino, carboxyl, hydroxyl, and carbonyl groups, which are responsible for biosorption of Cd(II) and Zn (II). The maximum biosorption capacities for Cd(II) and Zn(II) biosorption by N. commune calculated from Langmuir biosorption isotherm were 126.32 and 115.41 mg/ g, respectively. The biosorption isotherm for two biosorbents fitted well with Freundlich isotherm than Langmuir model with correlation coefficient (r 2 < 0.99).The biosorption kinetic data were fitted well with the pseudo-second-order kinetic model. Thus, this study indicated that the N. commune is an efficient biosorbent for the removal of Cd(II) and Zn(II) from aqueous solutions.

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Biosorption of Cd(II), Ni(II) and Pb(II) from Aqueous Solution by Dried Biomass of Aspergillus niger: Application of Response Surface Methodology to the Optimization of Process Parameters

Cited by 81 publications

References 62 publications

Removal of Ni(II) from Aqueous Solutions by Nanoscale Magnetite

Removal of Ni(II) from Aqueous Solutions by Nanoscale Magnetite

Laccase production and dye decolorization by Trametes versicolor: Application of Taguchi and Box-Behnken methodologies

Biosorption of Cd(II) and Zn(II) by Nostoc commune: Isotherm and Kinetics Studies

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