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S S Lele - One of the best experts on this subject based on the ideXlab platform.
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Synthetic Dye decolorization by white rot fungus ganoderma sp wr 1
Bioresource Technology, 2007Co-Authors: Madhavi S. Revankar, S S LeleAbstract:Abstract Decolorization of recalcitrant Dyes by an indigenous strain of white rot fungus isolated from bark of dead tree, WR-1 identified as Ganoderma sp. was investigated. The fermentation medium was optimized using a combination of one factor at a time and orthogonal array method. Maximum decolorization (96%) of 100 ppm amaranth was achieved in 8 h with optimized medium containing 2% starch and 0.125% yeast extract. Rate of Dye decolorization by the indigenous isolate Ganoderma sp. WR-1 was very high compared to the most widely used strains of Trametes versicolor and Phanerochaete chrysosporium . The broad-spectrum decolorization efficiency of the isolate was assessed using chemically different Dyes. The isolate was further evaluated for the decolorization of industrial effluent. Complete decolorization was achieved in 12 days.
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Synthetic Dye decolorization by white rot fungus, Ganoderma sp. WR-1
Bioresource Technology, 2007Co-Authors: Madhavi S. Revankar, S S LeleAbstract:Decolorization of recalcitrant Dyes by an indigenous strain of white rot fungus isolated from bark of dead tree, WR-1 identified as Ganoderma sp. was investigated. The fermentation medium was optimized using a combination of one factor at a time and orthogonal array method. Maximum decolorization (96%) of 100 ppm amaranth was achieved in 8 h with optimized medium containing 2% starch and 0.125% yeast extract. Rate of Dye decolorization by the indigenous isolate Ganoderma sp. WR-1 was very high compared to the most widely used strains of Trametes versicolor and Phanerochaete chrysosporium. The broad-spectrum decolorization efficiency of the isolate was assessed using chemically different Dyes. The isolate was further evaluated for the decolorization of industrial effluent. Complete decolorization was achieved in 12 days. © 2006 Elsevier Ltd. All rights reserved.
Frantisek Nerud - One of the best experts on this subject based on the ideXlab platform.
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Synthetic Dye decolorization capacity of white rot fungus dichomitus squalens
Bioresource Technology, 2006Co-Authors: Ivana Eichlerova, Ladislav Homolka, Frantisek NerudAbstract:The ability to decolorize eight chemically different Synthetic Dyes (Orange G, Amaranth, Orange I, Remazol Brilliant Blue R (RBBR), Cu-phthalocyanin, Poly R-478, Malachite Green and Crystal Violet) by the white rot fungus Dichomitus squalens was evaluated on agar plates. The fungus showed high decolorization capacity and was able to decolorize all Dyes tested, but not to the same extent. Some of the Dyes did not limit the decolorization capacity of the strain tested even at a concentration of 2 g/l. The presence of the Dyes in solid media reduced the mycelial growth rate of D. squalens; a positive correlation was found between the growth rate and the decolorization ability. Decolorization of Orange G and RBBR was studied also in liquid culture, where both Dyes caused an enhancement of ligninolytic enzyme and overall hydrogen peroxide production and a decrease of biomass production. RBBR was removed to a higher extent than Orange G.
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evaluation of Synthetic Dye decolorization capacity in ischnoderma resinosum
Journal of Industrial Microbiology & Biotechnology, 2006Co-Authors: Ivana Eichlerova, Ladislav Homolka, Frantisek NerudAbstract:The little studied white rot fungus Ischnoderma resinosum was tested for its ability to decolorize seven different Synthetic Dyes. The strain efficiently decolorized Orange G, Amaranth, Remazol Brilliant Blue R, Cu-phthalocyanin and Poly R-478 on agar plates and in liquid culture at a relatively high concentration of 2–4 and 0.5–1 g l−1, respectively. Malachite Green and Crystal Violet were decolorized to a lower extent up to the concentration of 0.1 g l−1. Decolorization capacity of I. resinosum was higher than that in Phanerochaete chrysosporium, Pleurotus ostreatus or Trametes versicolor. In contrast with these thoroughly examined fungi, I. resinosum was able to degrade a wide spectrum of chemically and structurally different Synthetic Dyes. I. resinosum also efficiently decolorized Dye mixtures. In liquid culture, Orange G and Remazol Brilliant Blue R were decolorized most rapidly; the process was not affected by different nitrogen content in the media. Shaken cultivation strongly inhibited the decolorization of Orange G.
Madhavi S. Revankar - One of the best experts on this subject based on the ideXlab platform.
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Synthetic Dye decolorization by white rot fungus ganoderma sp wr 1
Bioresource Technology, 2007Co-Authors: Madhavi S. Revankar, S S LeleAbstract:Abstract Decolorization of recalcitrant Dyes by an indigenous strain of white rot fungus isolated from bark of dead tree, WR-1 identified as Ganoderma sp. was investigated. The fermentation medium was optimized using a combination of one factor at a time and orthogonal array method. Maximum decolorization (96%) of 100 ppm amaranth was achieved in 8 h with optimized medium containing 2% starch and 0.125% yeast extract. Rate of Dye decolorization by the indigenous isolate Ganoderma sp. WR-1 was very high compared to the most widely used strains of Trametes versicolor and Phanerochaete chrysosporium . The broad-spectrum decolorization efficiency of the isolate was assessed using chemically different Dyes. The isolate was further evaluated for the decolorization of industrial effluent. Complete decolorization was achieved in 12 days.
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Synthetic Dye decolorization by white rot fungus, Ganoderma sp. WR-1
Bioresource Technology, 2007Co-Authors: Madhavi S. Revankar, S S LeleAbstract:Decolorization of recalcitrant Dyes by an indigenous strain of white rot fungus isolated from bark of dead tree, WR-1 identified as Ganoderma sp. was investigated. The fermentation medium was optimized using a combination of one factor at a time and orthogonal array method. Maximum decolorization (96%) of 100 ppm amaranth was achieved in 8 h with optimized medium containing 2% starch and 0.125% yeast extract. Rate of Dye decolorization by the indigenous isolate Ganoderma sp. WR-1 was very high compared to the most widely used strains of Trametes versicolor and Phanerochaete chrysosporium. The broad-spectrum decolorization efficiency of the isolate was assessed using chemically different Dyes. The isolate was further evaluated for the decolorization of industrial effluent. Complete decolorization was achieved in 12 days. © 2006 Elsevier Ltd. All rights reserved.
Ivana Eichlerova - One of the best experts on this subject based on the ideXlab platform.
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Synthetic Dye decolorization capacity of white rot fungus dichomitus squalens
Bioresource Technology, 2006Co-Authors: Ivana Eichlerova, Ladislav Homolka, Frantisek NerudAbstract:The ability to decolorize eight chemically different Synthetic Dyes (Orange G, Amaranth, Orange I, Remazol Brilliant Blue R (RBBR), Cu-phthalocyanin, Poly R-478, Malachite Green and Crystal Violet) by the white rot fungus Dichomitus squalens was evaluated on agar plates. The fungus showed high decolorization capacity and was able to decolorize all Dyes tested, but not to the same extent. Some of the Dyes did not limit the decolorization capacity of the strain tested even at a concentration of 2 g/l. The presence of the Dyes in solid media reduced the mycelial growth rate of D. squalens; a positive correlation was found between the growth rate and the decolorization ability. Decolorization of Orange G and RBBR was studied also in liquid culture, where both Dyes caused an enhancement of ligninolytic enzyme and overall hydrogen peroxide production and a decrease of biomass production. RBBR was removed to a higher extent than Orange G.
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evaluation of Synthetic Dye decolorization capacity in ischnoderma resinosum
Journal of Industrial Microbiology & Biotechnology, 2006Co-Authors: Ivana Eichlerova, Ladislav Homolka, Frantisek NerudAbstract:The little studied white rot fungus Ischnoderma resinosum was tested for its ability to decolorize seven different Synthetic Dyes. The strain efficiently decolorized Orange G, Amaranth, Remazol Brilliant Blue R, Cu-phthalocyanin and Poly R-478 on agar plates and in liquid culture at a relatively high concentration of 2–4 and 0.5–1 g l−1, respectively. Malachite Green and Crystal Violet were decolorized to a lower extent up to the concentration of 0.1 g l−1. Decolorization capacity of I. resinosum was higher than that in Phanerochaete chrysosporium, Pleurotus ostreatus or Trametes versicolor. In contrast with these thoroughly examined fungi, I. resinosum was able to degrade a wide spectrum of chemically and structurally different Synthetic Dyes. I. resinosum also efficiently decolorized Dye mixtures. In liquid culture, Orange G and Remazol Brilliant Blue R were decolorized most rapidly; the process was not affected by different nitrogen content in the media. Shaken cultivation strongly inhibited the decolorization of Orange G.
Luis M Madeira - One of the best experts on this subject based on the ideXlab platform.
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modelling of the Synthetic Dye orange ii degradation using fenton s reagent from batch to continuous reactor operation
Chemical Engineering Journal, 2009Co-Authors: Herney J Ramirez, Carlos A V Costa, Filipa Duarte, F G Martins, Luis M MadeiraAbstract:Abstract In this work, a simple kinetic model was used to study the azo Dye Orange II (O-II) degradation using Fenton’s reagent, in the Fenton-like stage. The effects of pH, temperature, Cl− concentration and initial concentrations of O-II, hydrogen peroxide (H2O2) and ferrous ion catalyst (Fe2+) on the degradation rate have been investigated in a batch reactor. The apparent kinetic constants, kap, for O-II degradation were determined in the following ranges of experimental conditions: 2.0 ≤ pH ≤ 4.0, 283 K ≤ T ≤ 323 K, 0 M ≤ C C l − ≤ 1 × 10 − 2 M , 3 × 10 − 5 M ≤ C OI I o ≤ 1 × 10 − 4 M , 1 × 10 − 4 M ≤ C H 2 O 2 o ≤ 1 × 10 − 3 M and 2.5 × 10 − 6 M ≤ C F e o 2 + ≤ 2 × 10 − 5 M . A pseudo first-order reaction rate with respect to O-II concentration was found to be adequate to fit the data in these experiments, in which kap depends on the initial conditions following a power-law dependency (at optimum pH of 3 and absence of chloride ions). This equation, without further fitting parameters, was successfully used to validate experiments performed in a continuous stirred tank reactor (CSTR). The ability of the model predictions was also checked by performing experiments in the CSTR out of the above-mentioned ranges (used for the kinetic study).
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experimental design to optimize the degradation of the Synthetic Dye orange ii using fenton s reagent
Catalysis Today, 2005Co-Authors: Herney J Ramirez, Carlos A V Costa, Luis M MadeiraAbstract:The experimental design methodology was applied having in mind the optimization of the azo Dye Orange II degradation using the Fenton's reagent (mixture of H 2 O 2 and Fe 2+ ). The variables considered were the temperature, H 2 O 2 concentration and Fe 2+ :H 2 O 2 ratio, for a Dye concentration of 0.3 mM and pH 3. The multivariate experimental design allowed to develop quadratic models for: (i) color removal and (ii) total organic carbon (TOC) reduction (both after 2 h of reaction), which were adequate to predict responses in all the range of experimental conditions used. Under the optimum conditions, performances of 99.7 and 70.7% for color and TOC removal, respectively, were experimentally reached. It was found that both H 2 O 2 concentration and temperature have an important effect in the organic matter degradation efficiency.