Assignments and Mechanism of SERRS of the Hydrazone Form for the Azo Dye Solvent Yellow 14

1995 ◽  
Vol 99 (3) ◽  
pp. 879-885 ◽  
Author(s):  
C. H. Munro ◽  
W. E. Smith ◽  
D. R. Armstrong ◽  
P. C. White
Keyword(s):  
Azo Dye ◽  
Hydrazone Form

scholarly journals Theoretical investigation on the mechanism of the OH-initiated degradation process of reactive red 2 azo dye

RSC Advances ◽  
2017 ◽  
Vol 7 (66) ◽  
pp. 41799-41811 ◽  
Author(s):  
Cheng Luo ◽  
Hongjie Wang ◽  
Wenyi Dong ◽  
Xianbing Zhang
Keyword(s):  
Theoretical Investigation ◽  
Azo Dye ◽  
Degradation Process ◽  
Nucleophilic Attack ◽  
Dual Descriptor ◽  
Electrophilic Attack ◽  
Bond Lengths ◽  
Reactive Red 2 ◽  
Hydrazone Form

The dual descriptor (Δf) data of azo form (a, RR2) and hydrazone form (b, HRR2) of RR2 dianion. For Δf> 0 (green), the site is favorable for nucleophilic attack, for Δf< 0 (blue), the site is favorable for electrophilic attack. Key bond lengths in Å.

Effect of Nitrogen Sources on the AZO Dye Decolourization

2012 ◽  
Vol 2 (7) ◽  
pp. 424-426
Author(s):  
Suchita Dahiwade ◽  
◽  
Dr. A. O. Ingle Dr. A. O. Ingle ◽  
Dr. S. R. Wate Dr. S. R. Wate
Keyword(s):  
Azo Dye ◽  
Nitrogen Sources ◽  
Dye Decolourization

Determination of the food azo dye carmoisine vs chlorpheniramine maleate ion associate structure

2014 ◽  
Vol 0 (3(79)) ◽  
pp. 34-37
Author(s):  
A. S. Materiienko ◽  
V. O. Grudko ◽  
V. A. Khanin ◽  
V. A. Georgiyants
Keyword(s):  
Azo Dye ◽  
Chlorpheniramine Maleate ◽  
Ion Associate

ADVANCED OXIDATION OF AN AZO DYE AND ITS SYNTHESIS INTERMEDIATES IN AQUEOUS SOLUTION: EFFECT OF FENTON TREATMENT ON MINERALIZATION, BIODEGRADABILITY AND TOXICITY

2014 ◽  
Vol 13 (10) ◽  
pp. 2561-2571 ◽  
Author(s):  
Hrvoje Kusic ◽  
Sanja Papic ◽  
Igor Peternel ◽  
Zeljko Krevzelj ◽  
Natalija Koprivanac
Keyword(s):  
Aqueous Solution ◽  
Azo Dye ◽  
Advanced Oxidation

Use of a sequencing batch biofilter for degradation of azo dyes (acids and bases)

2000 ◽  
Vol 42 (5-6) ◽  
pp. 329-336 ◽  
Author(s):  
M. Quezada ◽  
I. Linares ◽  
G. Buitrón
Keyword(s):  
Azo Dyes ◽  
Azo Dye ◽  
Degradation Rate ◽  
Removal Rate ◽  
Textile Effluent ◽  
Colour Removal ◽  
Substrate Degradation ◽  
Acids And Bases ◽  
Removal Efficiencies ◽  
Basic Red 46

The degradation of azo dyes in an aerobic biofilter operated in an SBR system was studied. The azo dyes studied were Acid Red 151 and a textile effluent containing basic dyes (Basic Blue 41, Basic Red 46 and 16 and Basic Yellow 28 and 19). In the case of Acid Red 151 a maximal substrate degradation rate of 288 mg AR 151/lliquid·d was obtained and degradation efficiencies were between 60 and 99%. Mineralization studies showed that 73% (as carbon) of the initial azo dye was transformed to CO2 by the consortia. The textile effluent was efficiently biodegraded by the reactor. A maximal removal rate of 2.3 kg COD/lliquid·d was obtained with removal efficiencies (as COD) varying from 76 to 97%. In all the cycles the system presented 80% of colour removal.

Enzymes Oxidizing the Azo Dye 1-Phenylazo-2-Naphthol (Sudan I) and their Contribution to its Genotoxicity and Carcinogenicity

2015 ◽  
Vol 15 (8) ◽  
pp. 829-840 ◽  
Author(s):  
Marie Stiborova ◽  
Heinz Schmeiser ◽  
Eva Frei ◽  
Petr Hodek ◽  
Vaclav Martinek
Keyword(s):  
Azo Dye ◽  
Sudan I

Photocatalytic Decolorization of an Azo Dye Derivative, Acid Yellow 29 in Aqueous Suspension of Titania

2014 ◽  
Vol 3 (1) ◽  
pp. 115-122
Author(s):  
Abuzar Khan ◽  
Niyaz Mir ◽  
Mohammad Muneera ◽  
Zaki Seddigi
Keyword(s):  
Azo Dye ◽  
Aqueous Suspension ◽  
Photocatalytic Decolorization

The polarographic and voltammetric determination of 2,6-dicyano-4-nitro-2'-acetylamino-4'-diethylaminoazobenzene

1990 ◽  
Vol 55 (6) ◽  
pp. 1508-1517 ◽  
Author(s):  
Jiří Barek ◽  
Dagmar Civišová ◽  
Ashutosh Ghosh ◽  
Jiří Zima
Keyword(s):  
Azo Dye ◽  
Differential Pulse ◽  
Differential Pulse Polarography ◽  
Determination Limit ◽  
Polarographic Reduction ◽  
Hanging Mercury Drop Electrode ◽  
Optimal Conditions ◽  
Pulse Polarography ◽  
Pulse Voltammetry

The polarographic reduction of the title azo dye was studied and optimal conditions were found for its analytical utilization in the concentration range 1 . 10-6 - 1 . 10-7 mol l-1 using differential pulse polarography and 1 . 10-6 - 1 . 10-8 mol l-1 using fast scan differential pulse voltammetry or linear scan voltammetry at a hanging mercury drop electrode. When the latter technique is combined with adsorptive accumulation of the studied substance on the surface of the hanging mercury drop, the determination limit can be further decreased to 3 . 10-9 mol l-1.

15N, 13C, and 1H NMR Spectra of Azo and Hydrazo Compounds Derived from 1,3,3-Trimethyl-2-methylidene-2,3-dihydroindole (Fischer Base)

1998 ◽  
Vol 63 (7) ◽  
pp. 1012-1020 ◽  
Author(s):  
Antonín Lyčka ◽  
Josef Jirman ◽  
Alois Koloničný
Keyword(s):  
Double Bond ◽  
Hydrochloric Acid ◽  
Nmr Spectra ◽  
Coupling Constants ◽  
Azo Compounds ◽  
Passive Component ◽  
Geometric Isomers ◽  
H Nmr ◽  
Fischer Base ◽  
Hydrazone Form

The 15N, 13C, and 1H NMR spectra were measured for azo and hydrazo compounds derived from 1,3,3-trimethyl-2-methylidene-2,3-dihydroindole (Fischer base), which is a passive component with a terminal methylidene group. Products prepared by coupling in hydrochloric acid exist in the corresponding hydrazone form as the E-isomers. Neutralization gives a mixture of two isomeric azo compounds which differ in the arrangement at the C(2)=C(10) double bond. This mixture was alkylated with methyl iodide to obtain the =N-N(CH3)- hydrazone derivatives. The geometric isomers were resolved based on the NOESY approach and the stereospecific behaviour of the 2J(15N,13C) coupling constants was studied for the 15N-labelled compounds.

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