Single- and Dual-Component Biosorption of Reactive Black 5 and Reactive Orange 16 onto Polysulfone-Immobilized EsterifiedCorynebacteriumglutamicum

2008 ◽  
Vol 47 (9) ◽  
pp. 3179-3185 ◽  
Author(s):  
K. Vijayaraghavan ◽  
Sung Wook Won ◽  
Yeoung-Sang Yun
Keyword(s):  
Reactive Black 5 ◽  
Reactive Orange 16 ◽  
Reactive Orange

Application of Aqai Stalks As Biosorbents for the Removal of the Dyes Reactive Black 5 and Reactive Orange 16 from Aqueous Solution

2011 ◽  
Vol 56 (5) ◽  
pp. 1857-1868 ◽  
Author(s):  
Natali F. Cardoso ◽  
Eder C. Lima ◽  
Tatiana Calvete ◽  
Isis S. Pinto ◽  
Camila V. Amavisca ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Reactive Black 5 ◽  
Reactive Orange 16 ◽  
Reactive Orange

scholarly journals Cationic High Molecular Weight Lignin Polymer: A Flocculant for the Removal of Anionic Azo-Dyes from Simulated Wastewater

Molecules ◽  
2018 ◽  
Vol 23 (8) ◽  
pp. 2005 ◽  
Author(s):  
Shoujuan Wang ◽  
Fangong Kong ◽  
Pedram Fatehi ◽  
Qingxi Hou
Keyword(s):  
Molecular Weight ◽  
Azo Dyes ◽  
Textile Industry ◽  
Dye Removal ◽  
Complex Structure ◽  
Marginal Effect ◽  
Reactive Black 5 ◽  
Reactive Orange 16 ◽  
Simulated Wastewater ◽  
Reactive Orange

The presence of dyes in wastewater effluents made from the textile industry is a major environmental problem due to their complex structure and poor biodegradability. In this study, a cationic lignin polymer was synthesized via the free radical polymerization of lignin with [2-(methacryloyloxy) ethyl] trimethyl ammonium chloride (METAC) and used to remove anionic azo-dyes (reactive black 5, RB5, and reactive orange 16, RO16) from simulated wastewater. The effects of pH, salt, and concentration of dyes, as well as the charge density and molecular weight of lignin-METAC polymer on dye removal were examined. Results demonstrated that lignin-METAC was an effective flocculant for the removal of dye via charge neutralization and bridging mechanisms. The dye removal efficiency of lignin-METAC polymer was independent of pH. The dosage of the lignin polymer required for reaching the maximum removal had a linear relationship with the dye concentration. The presence of inorganic salts including NaCl, NaNO3, and Na2SO4 had a marginal effect on the dye removal. Under the optimized conditions, greater than 98% of RB5 and 94% of RO16 were removed at lignin-METAC concentrations of 120 mg/L and 105 mg/L in the dye solutions, respectively.

scholarly journals Structural Insights into 2,2′-Azino-Bis(3-Ethylbenzothiazoline-6-Sulfonic Acid) (ABTS)-Mediated Degradation of Reactive Blue 21 by Engineered Cyathus bulleri Laccase and Characterization of Degradation Products

2014 ◽  
Vol 80 (24) ◽  
pp. 7484-7495 ◽  
Author(s):  
T. Kenzom ◽  
P. Srivastava ◽  
S. Mishra
Keyword(s):  
Sulfonic Acid ◽  
Degradation Products ◽  
Random Mutagenesis ◽  
Catalytic Efficiency ◽  
Reactive Black 5 ◽  
Content Type ◽  
Reactive Orange 16 ◽  
C Terminus ◽  
Modeled Structure ◽  
Reactive Orange

ABSTRACTAdvanced oxidation processes are currently used for the treatment of different reactive dyes which involve use of toxic catalysts. Peroxidases are reported to be effective on such dyes and require hydrogen peroxide and/or metal ions.Cyathus bullerilaccase, expressed inPichia pastoris, catalyzes efficient degradation (78 to 85%) of reactive azo dyes (reactive black 5, reactive orange 16, and reactive red 198) in the presence of synthetic mediator ABTS [2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid)]. This laccase was engineered to degrade effectively reactive blue 21 (RB21), a phthalocyanine dye reported to be decolorized only by peroxidases. The 816-bp segment (toward the C terminus) of thelccgene was subjected to random mutagenesis and enzyme variants (Lcc35, Lcc61, and Lcc62) were selected based on increased ABTS oxidizing ability. Around 78 to 95% decolorization of RB21 was observed with the ABTS-supplemented Lcc variants in 30 min. Analysis of the degradation products by mass spectrometry indicated the formation of several low-molecular-weight compounds. Mapping the mutations on the modeled structure implicated residues both near and far from the T1 Cu site that affected the catalytic efficiency of the mutant enzymes on ABTS and, in turn, the rate of oxidation of RB21. Several inactive clones were also mapped. The importance of geometry as well as electronic changes on the reactivity of laccases was indicated.

Preparation of polysulfone-based PANI–TiO2 nanocomposite hollow fiber membranes for industrial dye rejection applications

RSC Advances ◽  
2016 ◽  
Vol 6 (102) ◽  
pp. 99764-99773 ◽  
Author(s):  
Valeen Rashmi Pereira ◽  
Arun M. Isloor ◽  
A. K. Zulhairun ◽  
M. N. Subramaniam ◽  
W. J. Lau ◽  
...  
Keyword(s):  
Hollow Fiber ◽  
Wet Spinning ◽  
Reactive Black 5 ◽  
Hollow Fiber Membranes ◽  
Reactive Orange 16 ◽  
Fiber Membranes ◽  
Reactive Orange ◽  
Dye Rejection

Polysulfone-based nano-polyaniline–TiO2 containing hollow fiber membranes were prepared via a dry wet spinning method. The membranes were used for rejection of Reactive Black-5 and Reactive Orange-16 dyes.

Biodegradation and detoxification of reactive orange 16 by Candida sake 41E

2021 ◽  
pp. 100726
Author(s):  
F. Ruscasso ◽  
I. Cavello ◽  
M. Butler ◽  
E. Lopez Loveira ◽  
G. Curutchet ◽  
...  
Keyword(s):  
Reactive Orange 16 ◽  
Reactive Orange ◽  
Candida Sake

Biosorptive Decolorization of Reactive Orange 16 Using the Waste Biomass ofCorynebacteriumglutamicum

2004 ◽  
Vol 43 (24) ◽  
pp. 7865-7869 ◽  
Author(s):  
S. W. Won ◽  
S. B. Choi ◽  
B. W. Chung ◽  
D. Park ◽  
J. M. Park ◽  
...  
Keyword(s):  
Waste Biomass ◽  
Reactive Orange 16 ◽  
Reactive Orange
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