Process optimization for efficient dye removal by Aspergillus lentulus FJ172995

Kaushik, Prachi; Malik, Anushree

doi:10.1016/j.jhazmat.2010.09.096

Cited by 52 publications

(27 citation statements)

References 23 publications

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“…However, these studies completely lacks in representing the effect of interaction between different factors. Recently, factorial experimental design and response surface methodology (RSM) have been a powerful tool of statistics which simplifies the optimization by studying the mutual interactions among variables over a range of values in a statistically valid manner, while reducing the number of experimental trials (Kaushik and Malik, 2011;. Some studies have utilized these tools statistical for optimization of different processes, e.g.…”

Section: Introductionmentioning

confidence: 99%

“…Some studies have utilized these tools statistical for optimization of different processes, e.g. in the enzyme production Maciel et al, 2011), dyes and metals removal (Sharma et al, 2009;Kaushik and Malik, 2011) and control and growth of the microorganism (Mishra and Malik, 2012;. Thus, the aim of this study was to optimize phytase production by Aspergillus japonicus URM 5633 in SSF using cassava bast as substrate and to partially characterize this enzyme.…”

Section: Introductionmentioning

confidence: 99%

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Optimization of phytase production by Aspergillus japonicus Saito URM 5633 using cassava bast as substrate in solid state fermentation

Moreira¹,

Herculano²,

Maciel³

et al. 2014

Afr. J. Microbiol. Res.

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Production of phytase by Aspergillus japonicus URM 5633 was investigated by solid state fermentation (SSF) using cassava bast as substrate. The effects of temperature, pH and initial moisture on phytase production were studied using a full factorial design 2 3 . The maximum phytase activity was 174 U/g dry substrate. The optimum conditions for phytase production were pH 6.5 and 40% initial moisture at 26°C with 96 h of fermentation. A factorial design 2 2 was created to optimise phytase production, where the initial moisture and temperature were the variables studied. The parameters for phytase production were fixed at 30% initial moisture, 30°C and pH 5.5, and the maximum activity obtained was 183.1 U/g dry substrate. The effects of glucose concentration, nitrogen source type and nitrogen source concentration in phytase production was studied using the 2 3 factorial design. Nitrogen source concentration was significant for phytase activity and had a negative effect, indicating that smaller values increased enzyme activity. The optimum activity for phytase occurred at pH 3.6 and at an apparent optimum temperature of 60°C. Phytase was stable in the pH range of 2.4-3.0 at 30-70°C. The enzymatic activity increased significantly in the presence of FeSO 4 .

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optimization of phytase production by Aspergillus japonicus Saito URM 5633 using cassava bast as substrate in solid state fermentation

Moreira¹,

Herculano²,

Maciel³

et al. 2014

Afr. J. Microbiol. Res.

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show abstract

“…Design of experiments (DOE) and response surface methodology (RSM) is largely used for modeling mechanism parameters, especially in adsorption or removal process [19][20][21][22][23][24][25][26][27][28][29][30][31][32]. Because RSM contains a lower number of experiments, it is flaws over conventional methods available.…”

Section: Introductionmentioning

confidence: 99%

Response Surface Methodology for Adsorption of Fluoride Ion Using Nanoparticle of Zero Valent Iron from Aqueous Solution

Fakhri¹

2013

J Chem Eng Process Technol

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This study is removal of fluoride ion from aqueous solution by nano zero valent iron (nZVI). Effects of the factor variables (temperature, nZVI dose and pH) and their interactions on adsorption of fluoride ion were investigated by response surface methodology (RSM) based on Box-Behnken design (BBD). Optimized values of temperature, nZVI dose and pH for fluoride sorption were found as 313K, 0.5 g, and 4, respectively. The effect of initial fluoride concentration on the adsorption amount was investigated by a batch experiment. For study the fluoride removal mechanism, various adsorption isotherms such as Langmuir, Freundlich and Temkin were fitted. The results showed that the Freundlich isotherm gave high fit for fluoride adsorption. The time of adsorption reaction was rapid and subordinated pseudo-second-order kinetics. The values of thermodynamic parameters indicated that adsorption was spontaneous and endothermic in nature. The nano zero valent iron (nZVI) could be used as a potential adsorbent for fluoride ion containing aqueous solution.

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“…The metal ions are responsible for protein denaturation and reduction of enzyme activity. Several examples of this effect have been described for enzymes of the Krebs cycle [1][2][3].…”

Section: Introductionmentioning

confidence: 98%

“…However, there are many difficulties in the removal of color and dissolved organic compounds, in addition to the great disadvantage of being very susceptible to the effluent composition (shock loads), and producing a large volume of sludge [5,7,8]. Currently there are physical and chemical processes of precipitation, flocculation, electrolysis, crystallization or adsorption for the decontamination of heavy metals in environments, however, these processes can be burdensome and/or contribute to formation of new environmental contaminants, so it becomes necessary to develop more cost-effective technologies and practices for the removal of these elements, which are responsible for a high level of toxicity to living systems.Thus different techniques and processes have been used aiming at the removal of xenobiotic [1,3,[5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Potential of Cadmium and Dyes Removal by Chitosan Obtained from Zygomycetes

Mahnke¹,

Mhm²,

Kv³

et al. 2015

J Mol Genet Med

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Process optimization for efficient dye removal by Aspergillus lentulus FJ172995

Cited by 52 publications

References 23 publications

Optimization of phytase production by Aspergillus japonicus Saito URM 5633 using cassava bast as substrate in solid state fermentation

Optimization of phytase production by Aspergillus japonicus Saito URM 5633 using cassava bast as substrate in solid state fermentation

Response Surface Methodology for Adsorption of Fluoride Ion Using Nanoparticle of Zero Valent Iron from Aqueous Solution

Evaluation of the Potential of Cadmium and Dyes Removal by Chitosan Obtained from Zygomycetes

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