Reactive Dyes

Tappe, Horst; Helmling, Walter; Mischke, Peter; Rebsamen, Karl; Reiher, Uwe; Russ, Werner; Schläfer, Ludwig; Vermehren, Petra

doi:10.1002/14356007.a22_651

Cited by 10 publications

(9 citation statements)

References 56 publications

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“…Reactive dyes are most commonly used in dyeing of cellulose like cotton or flax. They can also be applied on wool and nylon, where, in the latter case, they are applied under weakly acidic conditions [ 7 ].…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic and Spectroscopic Investigation of Interactions between Reactive Red 223 and Reactive Orange 122 Anionic Dyes and Cetyltrimethyl Ammonium Bromide (CTAB) Cationic Surfactant in Aqueous Solution

Irfan

Usman

Mansha

et al. 2014

The Scientific World Journal

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The present study describes the conductometric and spectroscopic study of the interaction of reactive anionic dyes, namely, reactive red 223 and reactive orange 122 with the cationic surfactant cetyltrimethyl ammonium bromide (CTAB). In a systematic investigation, the electrical conductivity data was used to calculate various thermodynamic parameters such as free energy (ΔG), enthalpy (ΔH), and the entropy (ΔS) of solubilization. The trend of change in these thermodynamic quantities indicates toward the entropy driven solubilization process. Moreover, the results from spectroscopic data reveal high degree of solubilization, with strong interactions observed in the cases of both dyes and the CTAB. The spontaneous nature of solubilization and binding was evident from the observed negative values of free energies (ΔG p and ΔG b).

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Section: Introductionmentioning

confidence: 99%

Thermodynamic and Spectroscopic Investigation of Interactions between Reactive Red 223 and Reactive Orange 122 Anionic Dyes and Cetyltrimethyl Ammonium Bromide (CTAB) Cationic Surfactant in Aqueous Solution

Irfan

Usman

Mansha

et al. 2014

The Scientific World Journal

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“…This calibration curve was used to determine dye concentrations in samples. Different intermediate solutions mg/L) were prepared from the stock solution and charged into the reactor at a mixing rate of 300 rpm, taking into consideration the time (up to 60 min) and dosages of NZVI (0.15-0.30 g/L) and pH (2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12). The initial pH only was adjusted by (0.1 N and 1 N) HCl or (0.1 N and 1 N) NaOH and measured using an Orion star A214 Thermo Scientific pH meter.…”

Section: Methodsmentioning

confidence: 99%

“…(2015) [1][2][3][4][5][6][7][8][9][10][11][12] www.deswater.com doi: 10.1080/19443994.2015.1096833 out in between successive unit operations like bleaching, preparation for dyeing, etc. ; among various kinds of dyes reactive dyes are the most widely used.…”

Section: Desalination and Water Treatmentmentioning

confidence: 99%

“…They can also be applied on wool and nylon [2,3]. As most dyestuffs have complex aromatic groups in them that are resistant to degradation by biological wastewater treatment [4,5]. Dyes in the wastewater undergo chemical as well as biological decomposition, consume dissolved oxygen from the water bodies, and destroy aquatic life because of their toxicity [6].…”

Section: Desalination and Water Treatmentmentioning

confidence: 99%

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Modified synthesis of nanoscale zero-valent iron and its ultrasound-assisted reactivity study on a reactive dye and textile industry effluents

Dutta

Ghosh

Satpathi

et al. 2015

Desalination and Water Treatment

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A B S T R A C TSynthesized nanoscale zero-valent iron (NZVI) particles were applied for the degradation of a reactive dye Remazol Black B 133 and textile effluent. XRD and HR-TEM analysis of the synthesized particles showed body centered cubic crystal packing. The aggregates were spherical in shape and the size of the particles ranged from 5 to 15 nm. The reactive dye solution was substantially degraded by NZVI particles using ultrasonic irradiation under various experimental conditions created by varying NZVI dosages (0.15-0.30 g/L), initial dye concentration (25-200 mg/L), and pH (2-13). Experimental results suggest that NZVI particles work best within the pH range of 4-10. A unit gram of NZVI was found to degrade a maximum of 749.2 mg of RB B 133 dye and more than 80% of the dye was removed within 15 min of reaction time. During the degradation process, an oxidationreduction potential change from 196 to −577 mV was detected, indicating reductive condition is necessary for effective dye removal. FT-IR analysis of the end products of the degradation process indicated the presence of an amino (-NH 2 ) group resulting from the breakdown of the azo (-N=N-) group. Results suggest that the degradation followed pseudo-first-order kinetics with respect to dye concentration. The effluents of two textile industries were collected, characterized, and treated with NZVI particles, which led to the significant fall below the standard scale of American Dye Manufacturing Institute (ADMI). This lowering of ADMI value indicates that the overall color removal efficiency is irrespective of any specific dye present in the effluent.

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“…[s]-Triazine groups appear in reactive dyes, 1 combinatorial libraries of drug candidates, 2 linkers for PEGylation, building blocks for molecular recognition motifs, 3 and as chelators, 4 amongst others. 5 Our interest in triazines stems from their utility in the construction of dendrimers.…”

Section: Introductionmentioning

confidence: 99%

A new triazine bearing a pyrazolone group capable of copper, nickel, and zinc chelation

et al. 2018

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Interests in inorganic applications of triazines is growing. In this report, metal complexes of copper(II), nickel(II), and zinc(II) and a novel class of chelates comprising a triazine ring substituted with a hydrazine group and pyralozone are evaluated using spectrophotometric methods, single crystal X-ray diffractometry, and electrochemistry. Complexes with copper(II) include a single chelate and two chloride atoms to satisfy a trigonal bipryamidal coordination sphere. The nickel(II) and zinc(II) complexes are comprised of two chelating groups that adopt an octahedral geometry around the metal ion. Irreversible redox activity was observed with the copper(II) complex but no redox activity was observed with the ligand alone or zinc(II) and nickel(II) complexes. Use of the coumarin carboxylic acid assay shows that the ligand motif is capable of preventing redox cycling of copper in biological conditions and could thus serve as an antioxidant preventative agent. Cellular toxicity studies show that the new triazine molecule could have therapeutic applications in the µM concentration range based on the measured EC=1.183±2 mM. Altogether this work shows that by merging triazine chemistry into inorganic compounds, there is potential to explore a range applications thanks to the new architecture.

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Reactive Dyes

Abstract: The article contains sections titled: 1. Introduction 2. Reactive Systems … Show more

Cited by 10 publications

References 56 publications

Thermodynamic and Spectroscopic Investigation of Interactions between Reactive Red 223 and Reactive Orange 122 Anionic Dyes and Cetyltrimethyl Ammonium Bromide (CTAB) Cationic Surfactant in Aqueous Solution

Thermodynamic and Spectroscopic Investigation of Interactions between Reactive Red 223 and Reactive Orange 122 Anionic Dyes and Cetyltrimethyl Ammonium Bromide (CTAB) Cationic Surfactant in Aqueous Solution

Modified synthesis of nanoscale zero-valent iron and its ultrasound-assisted reactivity study on a reactive dye and textile industry effluents

A new triazine bearing a pyrazolone group capable of copper, nickel, and zinc chelation

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