Structure elucidation of the dye Acid Red 131: complete 1H, 13C and 15N NMR data assignment

Schievano, Elisabetta; Menegazzo, Ileana; Marotta, Ester; Mammi, Stefano

doi:10.1002/mrc.2765

Cited by 8 publications

(2 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The three most commonly used dyes are azo, anthraquinone and phthalocyanine [1]. Azo dyes, in particular, contain an azo group (-N=N-) which usually links two aromatic systems or aromatic heterocycles or enolizable aliphatic groups [3]. As the demands for these products increases, dyeing wastewater increases several folds [4], and these dye industrial effluents finally pollute water bodies, causing unconditional pollution hazards to aquatic ecosystem.…”

Section: Introductionmentioning

confidence: 99%

Biotransformation and Detoxification of Xylidine Orange Dye Using Immobilized Cells of Marine-Derived Lysinibacillus sphaericus D3

et al. 2017

View full text Add to dashboard Cite

Lysinibacillus sphaericus D3 cell-immobilized beads in natural gel sodium alginate decolorized the xylidine orange dye 1-(dimethylphenylazo)-2-naphthol-6-sulfonic acid sodium salt in the laboratory. Optimal conditions were selected for decolorization and the products formed were evaluated for toxicity by disc diffusion assay against common marine bacteria which revealed the non-toxic nature of the dye-degraded products. Decolorization of the brightly colored dye to colorless products was measured on an Ultra Violet-Vis spectrophotometer and its biodegradation products monitored on Thin Layer Chromatographic plate and High Performance Liquid Chromatography (HPLC). Finally, the metabolites formed in the decolorized medium were characterized by mass spectrometry. This analysis confirms the conversion of the parent molecule into lower molecular weight aromatic phenols and sulfonic acids as the final products of biotransformation. Based on the results, the probable degradation products of xylidine orange were naphthol, naphthylamine-6-sulfonic acid, 2-6-dihydroxynaphthalene, and bis-dinaphthylether. Thus, it may be concluded that the degradation pathway of the dye involved (a) reduction of its azo group by azoreductase enzyme (b) dimerization of the hydrazo compound followed by (c) degradation of monohydrazo as well as dimeric metabolites into low molecular weight aromatics. Finally, it may be worth exploring the possibility of commercially utilizing L. sphaericus D3 for industrial applications for treating large-scale dye waste water.

show abstract

Section: Introductionmentioning

confidence: 99%

Biotransformation and Detoxification of Xylidine Orange Dye Using Immobilized Cells of Marine-Derived Lysinibacillus sphaericus D3

et al. 2017

View full text Add to dashboard Cite

show abstract

“…1 The importance of carrying out the proper treatment of textile effluents, before their release in nature in rivers, lakes and seas, is due to some characteristics of the dyes, complexity of the structure and the presence of toxic metals in certain dye structures. 2,3 Currently, there are several processes that can perform the treatment of industrial effluents. The most used are physical-chemical methods (filtration, coagulation, adsorption, flocculation), chemical oxidation (use of chlorine, ozone, hydrogen peroxide, wet air oxidation), and advanced oxidation processes (AOP) (Fenton's reaction, ozone + UV radiation, photo-chemistry).…”

mentioning

confidence: 99%

Indirect Electrochemical Oxidation of Reactive Blue 19 Dye as a Model Organic Substrate: Role of Anode Material and Oxidants Electrochemically Generated

Brito

Silva

Garcia‐Segura

et al. 2015

J. Electrochem. Soc.

View full text Add to dashboard Cite

The indirect electrochemical oxidation (IEO) of Reactive Blue 19 has been studied at boron-doped diamond (BDD) and Ru 0.3 Ti 0.7 O 2 /Ti anodes by applying 25, 50 and 75 mA cm −2 in presence of NaCl as supporting electrolyte. Results clearly showed that electrochemical degradation of dye was achieved via electrogenerated species (hydroxyl radicals and active chlorine), obtaining higher removal efficiencies of color (100% for both anodes) and organic matter from solution (from 30 up to 60% for Ru 0.3 Ti 0.7 O 2 /Ti and from 65 up to 80% for BDD). In order to understand the key role of oxidants, active chlorine species were also determined, achieving different concentrations of dissolved Cl 2 , HClO, ClO − , chlorite, chlorine dioxide and chlorate at both anodes, as a consequence of experimental conditions used as well as the nature of electrode material employed. For BDD, the IEO was more effective due to the effective production of • OH radicals as well as HClO and ClO − species that favor the degradation of organic matter. The results are discussed on the light of existing literature.

show abstract

Fabrication of semisynthetic collagenic materials for mere/synergistic adsorption: A model approach of determining dye allocation by systematic characterization and optimization

Karmakar

Mahapatra

Dutta

et al. 2017

International Journal of Biological Macromolecules

View full text Add to dashboard Cite

Structure elucidation of the dye Acid Red 131: complete ¹H, ¹³C and ¹⁵N NMR data assignment

Cited by 8 publications

References 16 publications

Biotransformation and Detoxification of Xylidine Orange Dye Using Immobilized Cells of Marine-Derived Lysinibacillus sphaericus D3

Biotransformation and Detoxification of Xylidine Orange Dye Using Immobilized Cells of Marine-Derived Lysinibacillus sphaericus D3

Indirect Electrochemical Oxidation of Reactive Blue 19 Dye as a Model Organic Substrate: Role of Anode Material and Oxidants Electrochemically Generated

Fabrication of semisynthetic collagenic materials for mere/synergistic adsorption: A model approach of determining dye allocation by systematic characterization and optimization

Contact Info

Product

Resources

About