Environmental samples can be complex and are comprised of microorganisms and a matrix of decaying organic matter as well as an inorganic phase such as sand or precipitated material (waste water, sludge, soils, etc.). Nucleic acid dyes have recently been developed to address the growing need for environmental analyses (cell staining, counting, viability testing and specific organism identificati...

A series of new conjugated metal-free organic dyes (TC1, TC2, TC3, and TC4) comprising triphenylamine (TPA) moieties as the electron donor and cyanoacetic acid moieties as the electron acceptor/anchoring groups were designed at the molecular level and developed for the use in dye-sensitized solar cells (DSCs). Quantum chemical calculations have been performed to gain insight into structural, el...

Currently, biological method has been utilized in the treatment of wastewater -containing synthetic dyes used by textile industries in Iraq. The present work was devoted to study the operating feasibility using reverse osmosis (RO) and nanofiltration (NF) membrane systems as an alternative treatment method of wastewater discharged from Iraqi textile mills. Acid red, reactive black and reactive ...

We investigated the effects of food dye consumption on locomotor activity, brain neurotransmitters, tissue vitamin B-6 levels, and hepatic cytochrome P-450 concentrations in postweanling rats. Animals were individually housed in stabilimeter-type activity cages for 4 1/2 weeks, and fed ad libitum a semipurified basal diet containing graded levels (4, 2, 1, 0.5 or 0%) of a blend of all seven Foo...

The adsorption of Acid blue 25, basic blue 9, basic violet 3, Pb(2+), Ni(2+), Zn(2+) and Cd(2+) ions has been studied in single and dye-metal binary solutions using two mineral materials: Clinoptilolite (CL) and ER (Erionite). These zeolites were characterized by FT-IR spectroscopy; potentiometric titration and nitrogen adsorption isotherms at 77 K to obtain their textural parameters. Results i...

Studies of the adsorption of acid dyes of the fluorane series have shown that more of the dye is adsorbed by bacteria under acid conditions than under basic or neutral conditions (Harris, 1949). The amount of dye adsorbed was also found to be related to the ionization of the dye molecule. Since both the bacterial cell and the dye anion carry negative charges, these findings suggest that as the ...

In the present study, activated bleaching earth was used as clay adsorbent for an investigation of the adsorbability and adsorption kinetics of acid dyes (i.e., acid orange 51, acid blue 9, and acid orange 10) with three different molecular sizes from aqueous solution at 25 degrees C in a batch adsorber. The rate of adsorption has been investigated under the most important process parameters (i...

Some reactive dyes (6a-6l) having Quinazolin-4(3H)-one system have been synthesized by coupling of diazotized 3-(4-(5-(4-aminophenyl)-1,3,4-oxadiazol-2-yl) phenyl)-4-oxo-2-phenyl-3,4-dihydroquinazoline-6-sulphonic acid with cyanurated components such as H-acid, J-acid, N-methyl Gamma acid, Peri Sulpho Tobias Koch Bronners Chicago K-acid, N-Phenyl J-acid and M-acid. The were characterized nitrog...