نتایج جستجو برای: azo dye

تعداد نتایج: 43344  

2009
Mustafa KARATAŞ Sukru DURSUN

Anaerobic treatment system was used for determination of colour removal under batch conditions. Azo-dye (Reactive Black 5, RB 5) with glucose as a carbon source was used as a synthetic wastewater. The decolourization process follows first order kinetics with respect to RB 5 azo-dye concentration in batch conditions. Decolourization rate constant (k1) value for dye concentration of 150 mgL was 0...

Journal: :iranian journal of microbiology 0
narjes jafari department of biology, faculty of science, alzahra university, tehran, iran. rouha kasra-kermanshahi department of biology, faculty of science, alzahra university, tehran, iran. mohammad-reaz soudi department of biology, faculty of science, alzahra university, tehran, iran.

background and objectives: synthetic dyes are recalcitrant to degradation and toxic to different organisms. decolorization of textile wastewaters is one of the major concerns since last decades. physical-chemical treatments are very expensive and frequently producing large amounts of toxic wastes. biological treatments can be more convenient. in the present study, an attempt has been made for d...

2016
Reena G. Desai

Azo dyes represents largest group and most versatile among synthetic dyes. Its Extensiveuse in industries of paper, photography, dying, printing, cosmetics and their subsequent release in industrial effluents by traditional methods of treatment is causing serious environmental problems worlwide. In the present studies a mixed bacterial consortium (azo 8) was isolated from dye polluted soil from...

Dye-containing wastewater generated from textile industries is a major source of environmental pollution. Azo dyes, which are the largest group of coloring agents, are widely used in industries.This research investigated the photocatalytic decolorization and degradation of an azo dye Reactive Red 198 (RR198) in aqueous solution with TiO2-P25 (Degussa) as photocatalyst in slurry form using UV li...

Journal: :Molecules 2012
Tadashi Ohashi Alícia M T Jara Anabelle C L Batista Luciana O Franco Marcos A Barbosa Lima Mohand Benachour Carlos A Alves da Silva Galba M Campos-Takaki

Azo dyes are generally resistant to biodegradation due to their complex structures. Acid orange II is one of the most widely used dyes in the textile industry. The influence of bovine serum albumin (BSA) in different concentrations, pH, and time of contact on Orange II was investigated using kinetics and adsorption-isotherm experiments. The results showed that the maximum colour removed from dy...

Journal: :Cancer research 1982
W N Schmidt B J Gronert D L Page R C Briggs L S Hnilica

We have investigated the appearance of specific nonhistone proteins during azo dye-induced hepatocarcinogenesis in the rat. Groups of animals fed azo dye-containing diet were sacrificed at approximately 3-week intervals, portions of their livers were examined histologically, and the remaining material was fractionated into chromatin and cytoplasmic fractions. Livers of the azo dye-fed animals e...

Journal: :Journal of cell science 1975
I Charvat K Esau

The localization of acid phosphatase during xylem development has been examined in the bean, Phaseolus vulgaris. The azo dye, the final reaction product, is initially prominent in the dictyosomes, vesicles apparently participating in secondary wall formation, and in the middle lamella of the young vessel element. Final reaction particles are also present in mitochondria, chloroplasts, and certa...

Journal: :The Biochemical journal 1966
A O Hawtrey L D Nourse

1. The incorporation of (14)C-labelled amino acids into polysomal protein was studied in a system consisting of polysomes and pH5 enzyme obtained 4 and 40hr. after a single intraperitoneal injection of 4-dimethylamino-3'-methylazobenzene. Labelling of the polysome fraction of preparations of both the 4hr.-treated and 40hr.-treated rats was considerably higher than in the normal control. 2. In f...

2017
Siyamak Shahab Liudmila Filippovich Masoome Sheikhi

DOI: 10.22631/chemm.2017.96853.1009 Quantum-chemical calculations using the Density Functional Theory (DFT) approach for structural analysis of the new dichroic mono azo dye: Sodium (E)-5-((4carboxylatophenyl)diazenyl)-2-hydroxybenzoate (S) (trans isomer) was carried out using B3LYP methods with 6-311+G* basis set. After calculations, the new mono azo dye was synthesized. UV, FT-IR and 1H NMR s...

1980
Nabila Rahman Zainal Abedin Ali Hossain

In the present study, nano-scale Zero Valent Iron (NZVI) was synthesized in ethanol medium by the method of ferric iron reduction using sodium borohydride as a reducing agent under atmospheric conditions. The obtained iron nanoparticles are mainly in zero valent oxidation state and remain without significant oxidation for hours. A systematic characterization of NZVI was performed using XRD, SEM...

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