Decolorization of dyes with different molecular properties using free and immobilized laccases from Trametes versicolor

Ramírez-Montoya, Luis A.; Hernández‐Montoya, Virginia; Montes-Morán, Miguel A.; Jáuregui-Rincón, Juan; Cervantes, Francisco J.

doi:10.1016/j.molliq.2015.08.040

Cited by 55 publications

(19 citation statements)

References 34 publications

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“…Laccase has been widely used for various types of dye decolourization studies (Daâssi et al, 2013;Ramírez-Montoya et al, 2015;Iark et al, 2019). The major advantage of laccase is that it degrades the dye by non-specific free radical mechanism to form phenolic products thereby avoiding the formation of aromatic amines (Chivukula and Renganathan, 1995).…”

Section: Introductionmentioning

confidence: 99%

Degradation of Azo Dye (Acid Orange 7) in a Microbial Fuel Cell: Comparison Between Anodic Microbial-Mediated Reduction and Cathodic Laccase-Mediated Oxidation

et al. 2019

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More than 80% of wastewater from industries is discharged into receiving water bodies without any pollution control. Microbial fuel cells (MFCs) are a promising technology for the simultaneous treatment of wastewater and electricity production. With regard to azo-dye containing wastewater (e.g., from textile manufacturing), the dye may be fed via the anode chamber containing electrochemically active bacteria or via the cathode chamber containing laccase enzyme as catalyst for oxygen reduction. This study investigated which of the two approaches is the best with regard to rate of decolourization of the dye (Acid orange 7), COD reduction and electricity production. The power density was higher for the MFC Dye Cathode (50 ± 4 mW m −2 , COD reduction 80.4 ± 1.2%) compared with 42.5 ± 2.6 mW m −2 (COD reduction 69 ± 2%) for MFC Dye Anode. The time required for decolourization was longer in the MFC Dye Anode (Shewanella oneidensis) where only 20% decolourization was obtained after 24 h compared to 80% for the MFC Dye Cathode. The anodic dye degradation products were unstable when exposed to air resulting in regaining of color. In case of degradation by laccase in the cathode chamber, the decolourization products were stable and simpler in chemical structure as determined by GC-MS. This work suggests that feeding azo dyes in cathode chambers of MFCs containing laccase is a better way of treating the dyes compared to the commonly used approach of feeding the dye in the anode chamber provided enzyme activity can be sustained.

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Section: Introductionmentioning

confidence: 99%

Degradation of Azo Dye (Acid Orange 7) in a Microbial Fuel Cell: Comparison Between Anodic Microbial-Mediated Reduction and Cathodic Laccase-Mediated Oxidation

et al. 2019

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“…Currently, there is a high demand for dyes and they are widely used in many applications . Most of the synthetic dyes are toxic, carcinogenic, and not readily biodegradable, due to their complex aromatic structures .…”

Section: Introductionmentioning

confidence: 99%

“…Most of the synthetic dyes are toxic, carcinogenic, and not readily biodegradable, due to their complex aromatic structures . Thus, the presence of these dyes in aquatic media and their removal from wastewaters have become a severe environmental concern . Azo dyes constitute about half of all synthetic dyes, being known as the mainly used class of dyes in textiles, paper, food, cosmetic, and leather industries .…”

Section: Introductionmentioning

confidence: 99%

Decolorization of dye solutions by tyrosinase in enzymatic membrane reactors

Veismoradi

Mousavi

Taherian

2019

J of Chemical Tech & Biotech

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BACKGROUND:The main aim of this study was to investigate the decolorization performance of enzymatic membrane reactors (EMRs) using tyrosinase, including direct contact membrane reactor (DCMR) and immobilized enzyme membrane reactor (IEMR). The crosslinked polyacrylonitrile (PAN)/chitosan composite membrane was employed in a separation unit as support for tyrosinase immobilization to decolorize two common Acid Blue 113 (AB113) and Direct Black 22 (DB22) azo dyes for the first time.RESULTS: According to the obtained results, the optimum enzyme amount, which could be immobilized on the membrane surface, was 25 units. The proper operating conditions for both DCMR and IEMR were determined as pH 6.5 and temperature 30 ∘ C. Both the reactors initially accounted for around 96% and 94% decolorization for AB113 and DB22, respectively. To determine the reusability of EMRs after 10 cycles, 83.1% and 78.5% dye removal were achieved using IEMR for AB133 and DB22, respectively; while for DCMR, this amount reduced to 60.5% and 58.3% for AB113 and DB22, respectively. CONCLUSION:The proposed IEMR maintained a high dye removal amount through the studied pH and temperature ranges. However, the performance of DCMR considerably reduced under the intensive operating conditions as well as in the long-term operation. As a result, the suggested immobilized enzyme showed superior and stable performance compared to the free one in the long-term operation.

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“…These compounds cause coloration of water, which inhibits sunlight transmission, leading to dying of the ecosystem. After entering the human body, they can cause serious illnesses such as allergies, gene mutations, heart disease or cancers [7,8]. For this reason, even a small amount of dyes in groundwater and drinking water is undesirable.…”

Section: Introductionmentioning

confidence: 99%

Synergistic Degradation of Dye Wastewaters Using Binary or Ternary Oxide Systems with Immobilized Laccase

et al. 2018

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In recent years, groundwater contamination caused by dyes has become an important problem. They enter into wastewater as a result of the textile, automotive, or cosmetics industries. For this reason, new methods are being sought, which would aid at the removal of dye impurities with high efficiency and also would be relatively cheap. In the presented study synthesized TiO2-ZrO2 (with TiO2:ZrO2 molar ratio of 8:2) and TiO2-ZrO2-SiO2 (with TiO2:ZrO2:SiO2 molar ratio of 8:1:1) oxide materials were used as supports for enzyme immobilization. Effective synthesis of the carriers was confirmed by results of scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), low-temperature nitrogen sorption and Fourier transform infrared spectroscopy (FTIR). The materials achieve high immobilization efficiency of the laccases from Trametes versicolor (83% and 96% for TiO2-ZrO2-laccase and TiO2-ZrO2-SiO2-laccase, respectively). The effect of selected dye concentrations, pH, temperature, and reusability were also tested. The obtained results showed that after removal of textile dyes, such as Alizarin Red S (ARS), Remazol Brilliant Blue R (RBBR), and Reactive Black 5 (RB5), under optimal process conditions, which were pH 5 and 25 °C, from dye solution of 5 mg/L degradation efficiency reached 100%, 91%, and 77%, respectively, suggesting synergistic mechanism of degradation by simultaneous sorption and catalytic action. Finally, reduction of chemical oxygen demand (COD) of the solution after treatment indicated lower mixture toxicity and effective dye degradation.

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Decolorization of dyes with different molecular properties using free and immobilized laccases from Trametes versicolor

Cited by 55 publications

References 34 publications

Degradation of Azo Dye (Acid Orange 7) in a Microbial Fuel Cell: Comparison Between Anodic Microbial-Mediated Reduction and Cathodic Laccase-Mediated Oxidation

Degradation of Azo Dye (Acid Orange 7) in a Microbial Fuel Cell: Comparison Between Anodic Microbial-Mediated Reduction and Cathodic Laccase-Mediated Oxidation

Decolorization of dye solutions by tyrosinase in enzymatic membrane reactors

Synergistic Degradation of Dye Wastewaters Using Binary or Ternary Oxide Systems with Immobilized Laccase

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