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Assila O, Vilaça N, Bertão AR, Fonseca AM, Parpot P, Soares OSGP, Pereira MFR, Baltazar F, Bañobre-López M, Neves IC. Optimization of iron-ZIF-8 catalysts for degradation of tartrazine in water by Fenton-like reaction. CHEMOSPHERE 2023; 339:139634. [PMID: 37516319 DOI: 10.1016/j.chemosphere.2023.139634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 07/21/2023] [Accepted: 07/22/2023] [Indexed: 07/31/2023]
Abstract
Optimization of iron zeolitic imidazole framework-8 (FeZIF-8) nanoparticles, as heterogeneous catalysts, were synthesized and evaluated by the Fenton-like reaction for to degrade tartrazine (Tar) in aqueous environment. To achieve this, ZIF-8 nanoparticles were modified with different iron species (Fe2+ or Fe3O4), and subsequently assessed through the Fenton-like oxidation. The effect of different parameters such as the concentration of hydrogen peroxide, the mass of catalyst and the contact time of reaction on the degradation of Tar by Fenton-like oxidation was studied by using the Box-Behnken design (BBD). The BBD model indicated that the optimum catalytic conditions for Fenton-like reaction with an initial pollutant concentration of 30 ppm at pH 3.0 were T = 40 °C and 12 mM of H2O2, 2 g/L of catalyst and 4 h of reaction. The maximum Tar conversion value achieved with the best catalyst, Fe1ZIF-8, was 66.5% with high mineralization (in terms of decrease of total organic carbon - TOC), 44.2%. To assess phytotoxicity, the germination success of corn kernels was used as an indicator in the laboratory. The results show that the catalytic oxidation by Fenton-like reaction using heterogeneous iron ZIF-8 catalysts is a viable alternative for treating contaminated effluents with organic pollutants and highlighted the importance of the validation of the optimized experimental conditions by mathematical models.
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Affiliation(s)
- Ouissal Assila
- CQUM, Centre of Chemistry, Chemistry Department, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal
| | - Natália Vilaça
- CQUM, Centre of Chemistry, Chemistry Department, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal; INL - Advanced (magnetic) Theranostic Nanostructures Lab, Nanomedicine Group, International Iberian Nanotechnology Laboratory, Av. Mestre José Veiga, 4715- 330, Braga, Portugal
| | - Ana R Bertão
- CQUM, Centre of Chemistry, Chemistry Department, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal; INL - Advanced (magnetic) Theranostic Nanostructures Lab, Nanomedicine Group, International Iberian Nanotechnology Laboratory, Av. Mestre José Veiga, 4715- 330, Braga, Portugal; Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus Gualtar, 4710-057, Braga, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - António M Fonseca
- CQUM, Centre of Chemistry, Chemistry Department, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal; CEB - Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal
| | - Pier Parpot
- CQUM, Centre of Chemistry, Chemistry Department, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal; CEB - Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal
| | - Olívia S G P Soares
- LSRE-LCM - Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials, Faculty of Engineering, University of Porto, Portugal; ALiCE - Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Portugal
| | - Manuel F R Pereira
- LSRE-LCM - Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials, Faculty of Engineering, University of Porto, Portugal; ALiCE - Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Portugal
| | - Fátima Baltazar
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus Gualtar, 4710-057, Braga, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Manuel Bañobre-López
- INL - Advanced (magnetic) Theranostic Nanostructures Lab, Nanomedicine Group, International Iberian Nanotechnology Laboratory, Av. Mestre José Veiga, 4715- 330, Braga, Portugal
| | - Isabel C Neves
- CQUM, Centre of Chemistry, Chemistry Department, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal; CEB - Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal.
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Facile synthesis route for visible active g-C3N5/MK30 nanocomposite and its computationally guided photocatalytic degradation of organic pollutants. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2022.122865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Ben Ayed A, Hadrich B, Sciara G, Lomascolo A, Bertrand E, Faulds CB, Zouari-Mechichi H, Record E, Mechichi T. Optimization of the Decolorization of the Reactive Black 5 by a Laccase-like Active Cell-Free Supernatant from Coriolopsis gallica. Microorganisms 2022; 10:microorganisms10061137. [PMID: 35744655 PMCID: PMC9227205 DOI: 10.3390/microorganisms10061137] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 05/26/2022] [Accepted: 05/30/2022] [Indexed: 02/05/2023] Open
Abstract
The textile industry generates huge volumes of colored wastewater that require multiple treatments to remove persistent toxic and carcinogenic dyes. Here we studied the decolorization of a recalcitrant azo dye, Reactive Black 5, using laccase-like active cell-free supernatant from Coriolopsis gallica. Decolorization was optimized in a 1 mL reaction mixture using the response surface methodology (RSM) to test the influence of five variables, i.e., laccase-like activity, dye concentration, redox mediator (HBT) concentration, pH, and temperature, on dye decolorization. Statistical tests were used to determine regression coefficients and the quality of the models used, as well as significant factors and/or factor interactions. Maximum decolorization was achieved at 120 min (82 ± 0.6%) with the optimized protocol, i.e., laccase-like activity at 0.5 U mL−1, dye at 25 mg L−1, HBT at 4.5 mM, pH at 4.2 and temperature at 55 °C. The model proved significant (ANOVA test with p < 0.001): coefficient of determination (R²) was 89.78%, adjusted coefficient of determination (R²A) was 87.85%, and root mean square error (RMSE) was 10.48%. The reaction conditions yielding maximum decolorization were tested in a larger volume of 500 mL reaction mixture. Under these conditions, the decolorization rate reached 77.6 ± 0.4%, which was in good agreement with the value found on the 1 mL scale. RB5 decolorization was further evaluated using the UV-visible spectra of the treated and untreated dyes.
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Affiliation(s)
- Amal Ben Ayed
- Laboratory of Biochemistry and Enzymatic Engineering of Lipases, Ecole Nationale d’Ingénieurs de Sfax (ENIS), University of Sfax, Sfax 3038, Tunisia;
- UMR1163, Biodiversité et Biotechnologie Fongiques, Aix-Marseille Université, INRAE, 13288 Marseille, France; (G.S.); (A.L.); (E.B.); (C.B.F.); (E.R.)
- Correspondence: (A.B.A.); (T.M.)
| | - Bilel Hadrich
- Laboratory of Enzyme Engineering and Microbiology, Ecole Nationale d’Ingénieurs de Sfax (ENIS), University of Sfax, Sfax 3038, Tunisia;
| | - Giuliano Sciara
- UMR1163, Biodiversité et Biotechnologie Fongiques, Aix-Marseille Université, INRAE, 13288 Marseille, France; (G.S.); (A.L.); (E.B.); (C.B.F.); (E.R.)
| | - Anne Lomascolo
- UMR1163, Biodiversité et Biotechnologie Fongiques, Aix-Marseille Université, INRAE, 13288 Marseille, France; (G.S.); (A.L.); (E.B.); (C.B.F.); (E.R.)
| | - Emmanuel Bertrand
- UMR1163, Biodiversité et Biotechnologie Fongiques, Aix-Marseille Université, INRAE, 13288 Marseille, France; (G.S.); (A.L.); (E.B.); (C.B.F.); (E.R.)
| | - Craig B. Faulds
- UMR1163, Biodiversité et Biotechnologie Fongiques, Aix-Marseille Université, INRAE, 13288 Marseille, France; (G.S.); (A.L.); (E.B.); (C.B.F.); (E.R.)
| | - Héla Zouari-Mechichi
- Laboratory of Biochemistry and Enzymatic Engineering of Lipases, Ecole Nationale d’Ingénieurs de Sfax (ENIS), University of Sfax, Sfax 3038, Tunisia;
| | - Eric Record
- UMR1163, Biodiversité et Biotechnologie Fongiques, Aix-Marseille Université, INRAE, 13288 Marseille, France; (G.S.); (A.L.); (E.B.); (C.B.F.); (E.R.)
| | - Tahar Mechichi
- Laboratory of Biochemistry and Enzymatic Engineering of Lipases, Ecole Nationale d’Ingénieurs de Sfax (ENIS), University of Sfax, Sfax 3038, Tunisia;
- Correspondence: (A.B.A.); (T.M.)
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Wang C, Lei H, Kong X, Zou R, Qian M, Zhao Y, Mateo W. Catalytic upcycling of waste plastics over nanocellulose derived biochar catalyst for the coupling harvest of hydrogen and liquid fuels. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 779:146463. [PMID: 34030226 DOI: 10.1016/j.scitotenv.2021.146463] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 03/09/2021] [Accepted: 03/10/2021] [Indexed: 06/12/2023]
Abstract
A powerful simple biochar catalyst derived from nanocellulose was applied to the catalytic upcycling of waste plastics into H2 and liquid fuels for the first time. For the results from model low-density polyethylene (LDPE) pyrolysis, the C8-C16 aliphatics and monocyclic aromatics were dominant constitutes of the liquid product with the yields ranging from 22 to 68 wt%. At the temperature of 500 °C and biochar to LDPE ratio surpassing 3, the LDPE could be completely degraded into liquid and gas without wax production. A wax yield of 16 wt% was observed at the temperature of 450 °C and biochar to LDPE ratio of 4, which was dramatically lower than that (77 wt%) from the absence of biochar at the temperature of 500 °C. Up to 92 vol% of H2 was detected in the gaseous product with a yield of 36 wt%. The lower temperatures and higher biochar to LDPE ratios favored increasing the generation of H2 at the expense of light gas CnHm especially CH4. Moreover, this biochar catalyst was tested effectively to convert the real waste plastics including grocery bags and packaging tray into valuable liquid and H2-enriched gas.
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Affiliation(s)
- Chenxi Wang
- Department of Biological Systems Engineering, Washington State University, Richland, WA 99354-1671, USA
| | - Hanwu Lei
- Department of Biological Systems Engineering, Washington State University, Richland, WA 99354-1671, USA.
| | - Xiao Kong
- Department of Biological Systems Engineering, Washington State University, Richland, WA 99354-1671, USA
| | - Rongge Zou
- Department of Biological Systems Engineering, Washington State University, Richland, WA 99354-1671, USA
| | - Moriko Qian
- Department of Biological Systems Engineering, Washington State University, Richland, WA 99354-1671, USA
| | - Yunfeng Zhao
- Department of Biological Systems Engineering, Washington State University, Richland, WA 99354-1671, USA
| | - Wendy Mateo
- Department of Biological Systems Engineering, Washington State University, Richland, WA 99354-1671, USA
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Wang C, Lei H, Zhao Y, Qian M, Kong X, Mateo W, Zou R, Ruan R. Integrated harvest of phenolic monomers and hydrogen through catalytic pyrolysis of biomass over nanocellulose derived biochar catalyst. BIORESOURCE TECHNOLOGY 2021; 320:124352. [PMID: 33166882 DOI: 10.1016/j.biortech.2020.124352] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 10/26/2020] [Accepted: 10/27/2020] [Indexed: 06/11/2023]
Abstract
The remarkable enhancement of phenolic monomer generation and hydrogen was achieved through catalytic pyrolysis of Douglas fir over nanocellulose derived biochar catalyst for the first time. The main compositions of produced bio-oil were phenolic monomers, furans, and naphthalenes, etc., in which the phenolic monomers were dominant compositions. And at the temperature of 650 °C and 3 of biochar to biomass ratio, the quantification results showed that the concentration of phenol was increased to 53.77 mg/mL from 15.76 mg/mL of free of biochar catalyst. The concentration of cresols were facilitated to 44.51 mg/mL from 20.95 mg/mL, while the concentration of dimethylphenols reduced to 7.76 mg/mL from 9.11 mg/mL. Up to 85.32 vol% of hydrogen was observed, increasing from 45.53 vol% of the non-catalytic process. After 15 cycles of reuse, biochar catalysts still favored to produce a much higher concentration of phenolic monomers and hydrogen than that of absence of biochar catalysts.
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Affiliation(s)
- Chenxi Wang
- Department of Biological Systems Engineering, Washington State University, Richland, WA 99354-1671, USA
| | - Hanwu Lei
- Department of Biological Systems Engineering, Washington State University, Richland, WA 99354-1671, USA.
| | - Yunfeng Zhao
- Department of Biological Systems Engineering, Washington State University, Richland, WA 99354-1671, USA
| | - Moriko Qian
- Department of Biological Systems Engineering, Washington State University, Richland, WA 99354-1671, USA
| | - Xiao Kong
- Department of Biological Systems Engineering, Washington State University, Richland, WA 99354-1671, USA
| | - Wendy Mateo
- Department of Biological Systems Engineering, Washington State University, Richland, WA 99354-1671, USA
| | - Rongge Zou
- Department of Biological Systems Engineering, Washington State University, Richland, WA 99354-1671, USA
| | - Roger Ruan
- Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota, 1390 Eckles Ave., St. Paul, MN 55108, USA
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Yang Q, Zhang M, Zhang M, Wang C, Liu Y, Fan X, Li H. Characterization of a Novel, Cold-Adapted, and Thermostable Laccase-Like Enzyme With High Tolerance for Organic Solvents and Salt and Potent Dye Decolorization Ability, Derived From a Marine Metagenomic Library. Front Microbiol 2018; 9:2998. [PMID: 30568647 PMCID: PMC6290062 DOI: 10.3389/fmicb.2018.02998] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Accepted: 11/20/2018] [Indexed: 11/13/2022] Open
Abstract
Synthetic dyes are widely used in many industries, but they cause serious environmental problems due to their carcinogenic and mutagenic properties. In contrast to traditional physical and chemical treatments, biodegradation is generally considered an environmental-friendly, efficient, and inexpensive way to eliminate dye contaminants. Here, a novel laccase-like enzyme Lac1326 was cloned from a marine metagenomic library. It showed a maximum activity at 60°C, and it retained more than 40% of its maximal activity at 10°C and more than 50% at 20-70°C. Interestingly, the laccase behaved stably below 50°C, even in commonly used water-miscible organic solvents. The enzyme decolorized all tested dyes with high decolorization efficiency. This thermostable enzyme with high decolorization activity and excellent tolerance of organic solvents and salt has remarkable potential for bioremediation of dye wastewater. It is thus proposed as an industrial enzyme.
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Affiliation(s)
- Qihao Yang
- School of Basic Courses, Guangdong Pharmaceutical University, Guangzhou, China
| | - Mengle Zhang
- School of Basic Courses, Guangdong Pharmaceutical University, Guangzhou, China
| | - Manman Zhang
- School of Basic Medical Sciences, Anhui Medical University, Hefei, China
| | - Chunqing Wang
- School of Basic Courses, Guangdong Pharmaceutical University, Guangzhou, China
| | - Yanyan Liu
- School of Basic Medical Sciences, Anhui Medical University, Hefei, China
| | - Xinjiong Fan
- School of Basic Medical Sciences, Anhui Medical University, Hefei, China
| | - He Li
- School of Basic Courses, Guangdong Pharmaceutical University, Guangzhou, China
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Purification and biochemical characterization of two isolated laccase isoforms from Agaricus bisporus CU13 and their potency in dye decolorization. Int J Biol Macromol 2018; 113:1142-1148. [DOI: 10.1016/j.ijbiomac.2018.03.043] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Revised: 03/07/2018] [Accepted: 03/11/2018] [Indexed: 11/21/2022]
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Luo S, Xie T, Liu Z, Sun F, Wang G. The development of CotA mediator cocktail system for dyes decolorization. J Appl Microbiol 2018; 124:1164-1174. [PMID: 29405567 DOI: 10.1111/jam.13721] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Revised: 01/23/2018] [Accepted: 01/30/2018] [Indexed: 01/28/2023]
Abstract
AIMS The increasing use of dyes leads to serious environmental concerns, it is significant to explore eco-friendly and economic approaches for dye decolorization. This study aimed to develop mediator cocktail (AS and ABTS) for enhancing the capability of laccase-mediator system in the removal of dyes. METHODS AND RESULTS By mediator screening, the mediators of ABTS and AS (ABTS, 2, 2'-azino-bis-(3-ethylbenzothiazo-thiazoline-6-sulphonic acid); AS, acetosyringone) were combined for dyes decolorization. The Box-Behnken Design and response surface analysis was performed to optimize experiment conditions. Comparing the CotA-ABTS-AS cocktail system with CotA-single mediator system showed that the coupling of ABTS and AS could increase the decolorization rate 15 times higher, save a third of the cost and shorten the reaction time by 50%. In addition, our studies revealed that sequential oxidation may occur in CotA-ABTS-AS system. CONCLUSIONS Compared with CotA laccase-single mediator system, the CotA-ABTS-AS cocktail system showed advantages including higher efficiency, lower cost and shorter reaction time. SIGNIFICANCE AND IMPACT OF THE STUDY This was the first report on the dyes decolorization by laccase mediator cocktail system. These results paved the curb for the application of laccase mediator system in various industrial processes.
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Affiliation(s)
- S Luo
- Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Science, Chengdu, China.,Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu, China.,University of Chinese Academy of Science, Beijing, China
| | - T Xie
- Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Science, Chengdu, China.,Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu, China
| | - Z Liu
- Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Science, Chengdu, China.,Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu, China
| | - F Sun
- National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - G Wang
- Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Science, Chengdu, China.,Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu, China
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Natarajan E, Ponnaiah GP. Optimization of process parameters for the decolorization of Reactive Blue 235 dye by barium alginate immobilized iron nanoparticles synthesized from aluminum industry waste. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.enmm.2017.01.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Farias S, Mayer DA, de Oliveira D, de Souza AAU, de Souza SMAGU. Enzymatic reuse of simulated dyeing process effluent using horseradish peroxidase. CAN J CHEM ENG 2017. [DOI: 10.1002/cjce.22805] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Simone Farias
- Federal University of Santa Catarina, Chemical Engineering Department; Laboratory of Mass Transfer; P.O. Box 476, 88040-900 Florianópolis SC Brazil
| | - Diego A. Mayer
- Federal University of Santa Catarina, Chemical Engineering Department; Laboratory of Mass Transfer; P.O. Box 476, 88040-900 Florianópolis SC Brazil
| | - Débora de Oliveira
- Federal University of Santa Catarina, Chemical Engineering Department; Laboratory of Mass Transfer; P.O. Box 476, 88040-900 Florianópolis SC Brazil
| | - Antônio Augusto Ulson de Souza
- Federal University of Santa Catarina, Chemical Engineering Department; Laboratory of Mass Transfer; P.O. Box 476, 88040-900 Florianópolis SC Brazil
| | - Selene M. A. Guelli U. de Souza
- Federal University of Santa Catarina, Chemical Engineering Department; Laboratory of Mass Transfer; P.O. Box 476, 88040-900 Florianópolis SC Brazil
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Prediction of Photocatalytic Degradation and Mineralization Efficiencies of Basic Blue 3 Using $${{\rm TiO}_{2}}$$ TiO 2 by Nonlinear Modeling Based on Box–Behnken Design. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2016. [DOI: 10.1007/s13369-016-2175-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Senthivelan T, Kanagaraj J, Panda RC. Recent trends in fungal laccase for various industrial applications: An eco-friendly approach - A review. BIOTECHNOL BIOPROC E 2016. [DOI: 10.1007/s12257-015-0278-7] [Citation(s) in RCA: 117] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Efficient decolorization and detoxification of reactive orange 7 using laccase isolated from Paraconiothyrium variabile, kinetics and energetics. J Taiwan Inst Chem Eng 2015. [DOI: 10.1016/j.jtice.2015.04.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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Rezaei S, Tahmasbi H, Mogharabi M, Ameri A, Forootanfar H, Khoshayand MR, Faramarzi MA. Laccase-catalyzed decolorization and detoxification of Acid Blue 92: statistical optimization, microtoxicity, kinetics, and energetics. JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE & ENGINEERING 2015; 13:31. [PMID: 25908991 PMCID: PMC4407540 DOI: 10.1186/s40201-015-0183-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Accepted: 04/07/2015] [Indexed: 05/16/2023]
Abstract
BACKGROUND In recent years, enzymatic-assisted removal of hazardous dyes has been considered as an alternative and eco-friendly method compared to those of physicochemical techniques. The present study was designed in order to obtain the optimal condition for laccase-mediated (purified from the ascomycete Paraconiothyrium variabile) decolorization of Acid Blue 92; a monoazo dye, using response surface methodology (RSM). So, a D-optimal design with three variables, including pH, enzyme activity, and dye concentration, was applied to optimize the decolorization process. In addition, the kinetic and energetic parameters of the above mentioned enzymatic removal of Acid Blue 92 was investigated. RESULTS Decolorization of Acid Blue 92 was maximally (94.1% ± 2.61) occurred at pH 8.0, laccase activity of 2.5 U/mL, and dye concentration of 75 mg/mL. The obtained results of kinetic and energetic studies introduced the laccase-catalyzed decolorization of Acid Blue 92 as an endothermic reaction (Ea, 39 kJ/mol; ΔS, 131 J/mol K; and ΔH, 40 kJ/mol) with K m and V max values of 0.48 mM and 227 mM/min mg, respectively. Furthermore, the results of microtoxicity study revealed that the toxicity of laccase-treated dye was significantly reduced compared to the untreated dye. CONCLUSIONS To sum up, the present investigation introduced the Paraconiothyrium variabile laccase as an efficient biocatalyst for decolorization of synthetic dye Acid Blue 92.
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Affiliation(s)
- Shahla Rezaei
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy and Biotechnology Research Center, Tehran University of Medical Sciences, P.O. Box 14155-6451, Tehran, 1417614411 Iran
| | - Hamed Tahmasbi
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy and Biotechnology Research Center, Tehran University of Medical Sciences, P.O. Box 14155-6451, Tehran, 1417614411 Iran
| | - Mehdi Mogharabi
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy and Biotechnology Research Center, Tehran University of Medical Sciences, P.O. Box 14155-6451, Tehran, 1417614411 Iran ; Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences, Tehran, 1417614411 Iran
| | - Alieh Ameri
- Department of Medicinal Chemistry, Faculty of Pharmacy, Kerman University of Medical Sciences, Kerman, Iran
| | - Hamid Forootanfar
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, Kerman University of Medical Sciences, Kerman, Iran
| | - Mohammad Reza Khoshayand
- Department of Drug and Food Control, Faculty of Pharmacy and Pharmaceuticals Quality Assurance Research Center, Tehran University of Medical Sciences, Tehran, 1417614411 Iran
| | - Mohammad Ali Faramarzi
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy and Biotechnology Research Center, Tehran University of Medical Sciences, P.O. Box 14155-6451, Tehran, 1417614411 Iran ; Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences, Tehran, 1417614411 Iran
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Ghafoori S, Mehrvar M, Chan PK. A statistical experimental design approach for photochemical degradation of aqueous polyacrylic acid using photo-Fenton-like process. Polym Degrad Stab 2014. [DOI: 10.1016/j.polymdegradstab.2014.10.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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16
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Korniłłowicz-Kowalska T, Rybczyńska K. Anthraquinone dyes decolorization capacity of anamorphic Bjerkandera adusta CCBAS 930 strain and its HRP-like negative mutants. World J Microbiol Biotechnol 2014; 30:1725-36. [PMID: 24415463 PMCID: PMC4018482 DOI: 10.1007/s11274-014-1595-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2013] [Accepted: 01/02/2014] [Indexed: 12/03/2022]
Abstract
Cultures of the anamorphic fungus Bjerkandera adusta CCBAS 930 decolorizing, in stationary cultures, 0.01 % solutions of carminic acid and Poly R-478, were characterised by a strong increase in the activity of the horseradish peroxidase (HRP-like) and manganese-dependent peroxidase (MnP) at a low activity of lignin peroxidase. Genotypically modified mutants of B. adusta CCBAS 930: 930-5 and 930-14, with total or partial loss of decolorization capabilities relative to anthraquinonic dyes, showed inhibition of the activity of HRP-like peroxidase and MnP. Whereas, compared to the parental strain, in the mutant cultures there was an increase in the activity of lignin peroxidase and laccase. The paper presents a discussion of the role of the studied enzymatic activities in the process of decolorization of anthraquinonic dyes by the strain B. adusta CCBAS 930.
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Affiliation(s)
- Teresa Korniłłowicz-Kowalska
- Department of Environmental Microbiology, Laboratory of Mycology, University of Life Sciences, Leszczyńskiego 7, 20-069, Lublin, Poland,
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Mogharabi M, Faramarzi MA. Laccase and Laccase-Mediated Systems in the Synthesis of Organic Compounds. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201300960] [Citation(s) in RCA: 183] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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18
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Development of novel enzymatic bioremediation process for textile industry effluents through response surface methodology. ECOLOGICAL ENGINEERING 2014. [DOI: 10.1016/j.ecoleng.2013.09.042] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Laccase immobilization on cellulose nanofiber: The catalytic efficiency and recyclic application for simulated dye effluent treatment. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.molcatb.2013.12.008] [Citation(s) in RCA: 120] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Lloret L, Eibes G, Feijoo G, Moreira MT, Lema JM. Application of response surface methodology to study the removal of estrogens in a laccase-mediated continuous membrane reactor. BIOCATAL BIOTRANSFOR 2013. [DOI: 10.3109/10242422.2013.815745] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Daâssi D, Zouari-Mechichi H, Frikha F, Martinez MJ, Nasri M, Mechichi T. Decolorization of the azo dye Acid Orange 51 by laccase produced in solid culture of a newly isolated Trametes trogii strain. 3 Biotech 2013; 3:115-125. [PMID: 28324566 PMCID: PMC3597134 DOI: 10.1007/s13205-012-0076-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2012] [Accepted: 06/01/2012] [Indexed: 10/28/2022] Open
Abstract
This study concerns the decolorization and detoxification of the azo dye Acid Orange 51 (AO51) by crude laccase from Trametes trogii produced in solid culture using sawdust as support media. A three-level Box-Behnken factorial design with four factors (enzyme concentration, 1-hydroxybenzotriazole (HBT) concentration, dye concentration and reaction time) combined with response surface methodology was applied to optimize AO51 decolorization. A mathematical model was developed showing the effect of each factor and their interactions on color removal. The model predicted that Acid Orange 51 decolorization above 87.87 ± 1.27 % could be obtained when enzyme concentration, HBT concentration, dye concentration and reaction time were set at 1 U/mL, 0.75 mM, 60 mg/L and 2 days, respectively. The experimental values were in good agreement with the predicted ones and the models were highly significant, the correlation coefficient (R2) being 0.9. Then the desirability function was employed to determine the optimal decolorization condition for each dye and minimize the process cost simultaneously. In addition, germination index assay showed that laccase-treated dye was detoxified; however in the presence of HBT, the phytotoxicity of the treated dye was increased. By using cheap agro-industrial wastes, such as sawdust, a potential laccase was obtained. The low cost of laccase production may further broaden its application in textile wastewater treatment.
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Senthilkumar S, Prabhu HJ, Perumalsamy M. Response surface Optimization for Biodegradation of Textile Azo dyes using isolated bacterial strain Pseudomonas sp. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2013. [DOI: 10.1007/s13369-012-0507-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Sahoo C, Gupta AK. Application of statistical experimental design to optimize the photocatalytic degradation of a thiazin dye using silver ion-doped titanium dioxide. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2013; 48:694-705. [PMID: 23445413 DOI: 10.1080/10934529.2013.744598] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
A three-factor, three-levels Box-Behnken design combined with response surface methodology (RSM) was used to optimize the photocatalytic degradation process of Methylene blue (MB), a cationic thiazin dye, using Agdoped TiO₂ under UV irradiation in a batch reactor. The individual and interaction effects of three operational parameters, photocatalyst dose (1.5-2.5 g/L), initial dye concentration (10-50 ppm) and pH (5-9), selected based on single factor study, on the colour removal (decolourization) and COD removal (mineralization) of the dye were determined by fitting the results of the experiments to two quadratic polynomial models relating the parameters to the response variables. Design Expert software version 8.0.6.1 was used to determine the effects of the parameters on the two responses and the optimum values of the parameters. The initial dye concentration was found to have a higher negative effect on the two responses, while photocatalyst dose and pH had lower positive effect. Under the optimum conditions (dose of Ag⁺ doped TiO₂ 1.97 g/L, initial concentration of MB 22.86 ppm and pH of reaction mixture 6.68) the decolourization and mineralization rate of MB were predicted as more than 96% and 71%, respectively. The high correlation between adjusted and predicted R values indicates goodness of fit of the model.
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Affiliation(s)
- Chittaranjan Sahoo
- Environmental Engineering Division, Department of Civil Engineering, Indian Institute of Technology, Kharagpur , India
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Forootanfar H, Moezzi A, Aghaie-Khozani M, Mahmoudjanlou Y, Ameri A, Niknejad F, Faramarzi MA. Synthetic dye decolorization by three sources of fungal laccase. IRANIAN JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE & ENGINEERING 2012; 9:27. [PMID: 23369690 PMCID: PMC3564790 DOI: 10.1186/1735-2746-9-27] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/10/2012] [Accepted: 12/10/2012] [Indexed: 12/07/2022]
Abstract
Decolorization of six synthetic dyes using three sources of fungal laccase with the origin of Aspergillus oryzae, Trametes versicolor, and Paraconiothyrium variabile was investigated. Among them, the enzyme from P. variabile was the most efficient which decolorized bromophenol blue (100%), commassie brilliant blue (91%), panseu-S (56%), Rimazol brilliant blue R (RBBR; 47%), Congo red (18.5%), and methylene blue (21.3%) after 3 h incubation in presence of hydroxybenzotriazole (HBT; 5 mM) as the laccase mediator. It was also observed that decolorization efficiency of all dyes was enhanced by increasing of HBT concentration from 0.1 mM to 5 mM. Laccase from A. oryzae was able to remove 53% of methylene blue and 26% of RBBR after 30 min incubation in absence of HBT, but the enzyme could not efficiently decolorize other dyes even in presence of 5 mM of HBT. In the case of laccase from T. versicolor, only RBBR was decolorized (93%) in absence of HBT after 3 h incubation.
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Affiliation(s)
- Hamid Forootanfar
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy and Biotechnology Research Center, Tehran University of Medical Sciences, P,O, Box 14155-6451, Tehran, 14174, Iran.
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Daâssi D, Frikha F, Zouari-Mechichi H, Belbahri L, Woodward S, Mechichi T. Application of response surface methodology to optimize decolourization of dyes by the laccase-mediator system. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2012; 108:84-91. [PMID: 22659603 DOI: 10.1016/j.jenvman.2012.04.039] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2011] [Revised: 04/23/2012] [Accepted: 04/28/2012] [Indexed: 06/01/2023]
Abstract
Response surface methodology (RSM) was applied to optimize the decolourization of 3 dyes belonging to 3 dye families such as reactive black 5 (diazoic), indigo carmine (indigoid) and aniline blue (anthraquinonic). Crude laccase from Trametes trogii and the laccase-mediator 1-hydroxybenzotriazole (HBT) were used in this study. Box-Behnken design using RSM with six variables namely pH, temperature, enzyme concentration, HBT concentration, dye concentration and incubation time was used in this study to optimize significant correlation between the effects of these variables on the decolourization of reactive black 5 (RB5), indigo carmine (IC) and aniline blue (AB). The optimum of pH, temperature, laccase, HBT, RB5 and reaction time were 4.5, 0.5 U ml(-1), 0.5 mM, 100 mg ml(-1) and 150 min respectively, for a maximum decolourization of RB5 (about 92.92% ± 7.21). Whereas, the optimum decolourization conditions of both IC (99.76% ± 7.75) and AB (98.44% ± 10) were: pH 4.5, temperature of 45 °C, enzyme concentration of 0.1 U ml(-1) and 0.5 U ml(-1), HBT concentration of 0.9 mM and 0.5 mM, dye concentration of 60 mg l(-1) and reaction time of 150 and 90 min, respectively. The experimental values were in good agreement with the predicted ones and the models were highly significant, the correlation coefficient (R(2)) being 0.864, 0.663 and 0.776 for RB5, IC and AB, respectively. In addition, when the kinetic parameters for the three dyes decolourization were calculated according to Hannes-Wolf plot, the following values were obtained: Km of 268.4, 47.94 and 44.64 mg l(-1) then V(max) of 35.58, 10.43 and 9.23 mg l(-1) min for the RB5, IC and AB decolourizations by laccase, respectively.
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Affiliation(s)
- Dalel Daâssi
- Laboratory of Enzyme Engineering and Microbiology, University of Sfax, Ecole Nationale d'Ingénieurs de Sfax, Route de Soukra Km 4.5, BP «1173», 3038 Sfax, Tunisia
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Sahoo C, Gupta AK. Optimization of photocatalytic degradation of methyl blue using silver ion doped titanium dioxide by combination of experimental design and response surface approach. JOURNAL OF HAZARDOUS MATERIALS 2012; 215-216:302-310. [PMID: 22429624 DOI: 10.1016/j.jhazmat.2012.02.072] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2011] [Revised: 02/09/2012] [Accepted: 02/28/2012] [Indexed: 05/31/2023]
Abstract
Photocatalytic degradation of methyl blue (MYB) was studied using Ag(+) doped TiO(2) under UV irradiation in a batch reactor. Catalytic dose, initial concentration of dye and pH of the reaction mixture were found to influence the degradation process most. The degradation was found to be effective in the range catalytic dose (0.5-1.5g/L), initial dye concentration (25-100ppm) and pH of reaction mixture (5-9). Using the three factors three levels Box-Behnken design of experiment technique 15 sets of experiments were designed considering the effective ranges of the influential parameters. The results of the experiments were fitted to two quadratic polynomial models developed using response surface methodology (RSM), representing functional relationship between the decolorization and mineralization of MYB and the experimental parameters. Design Expert software version 8.0.6.1 was used to optimize the effects of the experimental parameters on the responses. The optimum values of the parameters were dose of Ag(+) doped TiO(2) 0.99g/L, initial concentration of MYB 57.68ppm and pH of reaction mixture 7.76. Under the optimal condition the predicted decolorization and mineralization rate of MYB were 95.97% and 80.33%, respectively. Regression analysis with R(2) values >0.99 showed goodness of fit of the experimental results with predicted values.
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Affiliation(s)
- C Sahoo
- Environmental Engineering Division, Department of Civil Engineering, Indian Institute of Technology, Kharagpur, 721302, India
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Decolorization of antraquinonic dye, Reactive Blue 114 from synthetic wastewater by Fenton process: Kinetics and thermodynamics. J IND ENG CHEM 2012. [DOI: 10.1016/j.jiec.2011.12.007] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Cristóvão RO, Tavares AP, Brígida AI, Loureiro JM, Boaventura RA, Macedo EA, Coelho MAZ. Immobilization of commercial laccase onto green coconut fiber by adsorption and its application for reactive textile dyes degradation. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.molcatb.2011.04.014] [Citation(s) in RCA: 85] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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29
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Neifar M, Jaouani A, Kamoun A, Ellouze-Ghorbel R, Ellouze-Chaabouni S. Decolorization of Solophenyl Red 3BL Polyazo Dye by Laccase-Mediator System: Optimization through Response Surface Methodology. Enzyme Res 2011; 2011:179050. [PMID: 21869923 PMCID: PMC3159015 DOI: 10.4061/2011/179050] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2011] [Revised: 05/10/2011] [Accepted: 05/20/2011] [Indexed: 11/20/2022] Open
Abstract
The decolorization of direct Solophenyl red 3BL (SR), a polyazo dye extensively used in textile industry was studied. The Fomes fomentarius laccase alone did not decolorize SR. The natural redox mediator, acetosyringone (AS), was necessary for decolorization to occur. Box-Behnken design was used to evaluate the effects of three parameters, namely, enzyme concentration (0.5-2.5 U mL(-1)), redox mediator concentration (3-30 μM), and incubation time (1-24 h), on the SR decolorization yield. The fitted mathematical model allowed us to plot response surfaces as well as isoresponse curves and to determine optimal decolorization conditions. The results clearly indicated that the AS concentration was the main factor influencing the SR decolorization yield. The selected optimal conditions were enzyme concentration 0.8 U mL(-1), mediator concentration 33 μM, and time 14 h 30 min. These conditions allowed 79.66% of SR decolorization versus 80.70% for the predicted value. These results showed a promising future of applying laccase-AS system for industrial wastewater bioremediation.
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Affiliation(s)
- Mohamed Neifar
- Unité Enzymes et Bioconversion, Ecole Nationale d'Ingénieurs de Sfax, Université de Sfax, Route de Soukra, Sfax 3038, Tunisia
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Faramarzi MA, Forootanfar H. Biosynthesis and characterization of gold nanoparticles produced by laccase from Paraconiothyrium variabile. Colloids Surf B Biointerfaces 2011; 87:23-7. [PMID: 21616647 DOI: 10.1016/j.colsurfb.2011.04.022] [Citation(s) in RCA: 86] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2011] [Revised: 03/19/2011] [Accepted: 04/13/2011] [Indexed: 11/25/2022]
Abstract
During recent years investigation on the development of eco-friendly processes for production of gold nanoparticles (GNPs) have received much attention due to hazardous effects of chemical compounds used for nanoparticle preparation. In the present study, the purified laccase from Paraconiothyrium variabile was applied for synthesis of Au nanoparticles (AuNPs) and the properties of produced nanoparticles were characterized. The UV-vis spectrum of formed AuNPs showed a peak at 530 nm related to surface plasmon absorbance of GNPs represented the formation of gold nanoparticles after 20 min incubation of HAuCl(4) (0.6 mM) in the presence of 73 U laccase at 70°C. Transmission electron microscopy (TEM) image of AuNPs showed well dispersed nanoparticles in the range of 71-266 nm as determined by the laser light scattering method. The pattern of energy dispersive X-ray (EDX) of the prepared GNPs confirmed the structure of gold nanocrystals.
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Affiliation(s)
- Mohammad Ali Faramarzi
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy and Biotechnology Research Center, Tehran University of Medical Sciences, Tehran, Iran.
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Zhang H, Ran X, Wu X, Zhang D. Evaluation of electro-oxidation of biologically treated landfill leachate using response surface methodology. JOURNAL OF HAZARDOUS MATERIALS 2011; 188:261-8. [PMID: 21334807 DOI: 10.1016/j.jhazmat.2011.01.097] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2010] [Revised: 01/24/2011] [Accepted: 01/25/2011] [Indexed: 05/21/2023]
Abstract
Box-Behnken statistical experiment design and response surface methodology were used to investigate electrochemical oxidation of mature landfill leachate pretreated by sequencing batch reactor (SBR). Titanium coated with ruthenium dioxide (RuO(2)) and iridium dioxide (IrO(2)) was used as the anode in this study. The variables included current density, inter-electrode gap and reaction time. Response factors were ammonia nitrogen removal efficiency and COD removal efficiency. The response surface methodology models were derived based on the results. The predicted values calculated with the model equations were very close to the experimental values and the models were highly significant. The organic components before and after electrochemical oxidation were determined by GC-MS.
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Affiliation(s)
- Hui Zhang
- Department of Environmental Engineering, Wuhan University, PO Box C319, Luoyu Road 129#, Wuhan 430079, China
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Kaushik P, Malik A. Process optimization for efficient dye removal by Aspergillus lentulus FJ172995. JOURNAL OF HAZARDOUS MATERIALS 2011; 185:837-843. [PMID: 20970249 DOI: 10.1016/j.jhazmat.2010.09.096] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2010] [Revised: 09/03/2010] [Accepted: 09/25/2010] [Indexed: 05/30/2023]
Abstract
Response surface methodology involving three variables with five level second order central composite experimental design was employed to optimize conditions for maximum dye removal by Aspergillus lentulus FJ172995. The interaction between three variables; glucose, urea and initial dye concentration was studied and modeled for two responses: dye removal and biomass production. The results indicate that urea is the main factor influencing dye removal whereas glucose plays a major role in biomass production. Also, initial dye concentration has depreciative effect on dye removal thereby suggesting that for the treatment of effluent containing higher concentrations of dye, nutrient input should be increased. A high dye removal efficiency (99.97%) and high uptake capacity (97.54 mg/g) was obtained in 24h using optimum process variables.
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Affiliation(s)
- Prachi Kaushik
- Applied Microbiology Laboratory, Centre for Rural Development and Technology, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
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Zhang H, Li Y, Wu X, Zhang Y, Zhang D. Application of response surface methodology to the treatment landfill leachate in a three-dimensional electrochemical reactor. WASTE MANAGEMENT (NEW YORK, N.Y.) 2010; 30:2096-2102. [PMID: 20494566 DOI: 10.1016/j.wasman.2010.04.029] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2009] [Revised: 04/26/2010] [Accepted: 04/28/2010] [Indexed: 05/27/2023]
Abstract
The influence of different variables on the removal of ammonia nitrogen and COD from landfill leachate was investigated in a three-dimensional electrochemical reactor. Box-Behnken statistical experiment design and the response surface methodology were used to investigate operating condition effects, such as current density, activated carbon to water ratio and the reaction time, on ammonia nitrogen removal efficiency and COD removal efficiency. The positive and negative effects of variables and the interaction between variables on ammonia nitrogen removal and COD removal were determined. The response surface methodology models were derived based on the results and the response surface plots were developed accordingly.
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Affiliation(s)
- Hui Zhang
- Department of Environmental Engineering, Wuhan University, P.O. Box C319, Luoyu Road 129#, Wuhan 430079, China.
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Valls C, Vidal T, Roncero MB. Boosting the effect of a laccase-mediator system by using a xylanase stage in pulp bleaching. JOURNAL OF HAZARDOUS MATERIALS 2010; 177:586-592. [PMID: 20116167 DOI: 10.1016/j.jhazmat.2009.12.073] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2009] [Revised: 11/03/2009] [Accepted: 12/14/2009] [Indexed: 05/28/2023]
Abstract
Using an enzyme-based stage involving a xylanase (X) or laccase (as part of a laccase-mediator system, L) in a bleaching process can help reduce reagent consumption and hence its environmental impact. In this work, both types of enzymes were applied to eucalypt pulp. The influence of process variables in the laccase-mediator treatment (viz. laccase dose, HBT dose and reaction time) was assessed by using a three-variable sequential statistical plan. The effect of a pretreatment with X on the previous variables was also assessed. Kappa number and brightness models for the L stage and XL sequence were found to perform disparately, which suggests the formation of lignin derivatives interfering with brightness measurements. The L system oxidized readily accessible lignin within the first hours of treatment and affected the contents in cellulose and hexenuronic acids (HexA) of the resulting pulp. Xylanase facilitated access of the laccase-HBT system to lignin and HexA in cellulose fibres. The L treatment increased effluent properties such as Microtox toxicity, COD and colour, and led to strong inactivation of the enzyme. The increased toxicity of the effluents was due to HBT; based on statistical data, however, the effect can be reduced by lowering the mediator dose.
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Affiliation(s)
- Cristina Valls
- Textile and Paper Engineering Department, ETSEIAT, Universitat Politècnica de Catalunya, Colom 11, E-08222 Terrassa, Spain
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Optimization of laccase catalyzed degradation of reactive textile dyes in supercritical carbon dioxide medium by response surface methodology. REACTION KINETICS MECHANISMS AND CATALYSIS 2010. [DOI: 10.1007/s11144-009-0139-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Cristóvão RO, Tavares APM, Loureiro JM, Boaventura RAR, Macedo EA. Treatment and kinetic modelling of a simulated dye house effluent by enzymatic catalysis. BIORESOURCE TECHNOLOGY 2009; 100:6236-6242. [PMID: 19647998 DOI: 10.1016/j.biortech.2009.07.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2009] [Revised: 06/29/2009] [Accepted: 07/04/2009] [Indexed: 05/26/2023]
Abstract
Biocatalytic treatment of a synthetic dye house effluent, simulating a textile wastewater containing various reactive dyestuffs (Reactive Yellow 15, Reactive Red 239 and Reactive Black 5) and auxiliary chemicals, was investigated in a batch reactor using a commercial laccase. A high decolourisation (above 86%) was achieved at the maximum wavelength of Reactive Black 5. The decolourisation at the other dyes wavelengths (above 63% for RY15 and around 41% for RR239) and the total decolourisation based on all the visible spectrum (around 55%) were not so good, being somewhat lower than in the case of a mixture of the dyes (above 89% for RB5, 77% for RY15, 68% for RR239 and above 84% for total decolourisation). Even so, these results suggest the applicability of this method to treat textile dyeing wastewaters. Kinetic models were developed to simulate the synthetic effluent decolourisation by commercial laccase. The kinetic constants of the models were estimated by minimizing the difference between the predicted and the experimental time courses. The close correlation between the experimental data and the simulated values seems to demonstrate that the models are able to describe with remarkable accuracy the simulated effluent degradation. Water quality parameters such as TOC, COD, BOD(5) and toxicity were found to be under the maximum permissible discharge limits for textile industries wastewaters.
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Affiliation(s)
- Raquel O Cristóvão
- Laboratory of Separation and Reaction Engineering, Departamento de Engenharia Química, Faculdade de Engenharia, Universidade do Porto, Rua do Dr. Roberto Frias, 4200-465 Porto, Portugal
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Adsorption of Remazol Red 3BS from aqueous solutions using APTES- and cyclodextrin-modified HMS-type mesoporous silicas. Colloids Surf A Physicochem Eng Asp 2009. [DOI: 10.1016/j.colsurfa.2009.05.029] [Citation(s) in RCA: 85] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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