In this study, the properties and adsorption behaviors of organoclays synthesized with two structurally different surfactants having same carbon chain length (hexadecyltrimethylammonium bromide (HDTMAB) benzyldimethylhexadecylammonium chloride (BDHAC)) were evaluated. The structural examined using Fourier-transform infrared spectroscopy, zeta potential analysis, X-ray diffraction, N2 adsorption...

The pollution due to dyes from textile sector is one of the major issues faced worldwide. This study was focused on removal reactive dye, Drimaren Turquoise CL-B using Schizophyllum commune, a white rot fungus (WRF) keeping in mind current environmental conditions. Different parameters like pH, sources carbon & nitrogen, temperature, concentration dye and C/N ratio were used investigate the...

BACKGROUND Very few data are available from the literature on whether nonatopic subjects affected by persistent rhinitis may show the appearance of objective symptoms of rhinitis after the ingestion of food additives such as tartrazine (E102), erythrosine (E127), monosodium benzoate (E211), p-hydroxybenzoate (E218), sodium metabisulphite (E223), and monosodium glutamate (E620). It is still uncl...

A series of b-cyclodextrin (b-CD) derivatives modified by L-cystine, including 3,30-L-cystine-bridged bis(b-CD) (2), 3-Lcystine-b-CD (3), 6,60-L-cystine-bridged bis(b-CD) (4) and 6-L-cystine-b-CD (5), were synthesised inmoderate yields by the reaction of L-cystine with mono-[2-O-(p-tolysulfonyl)]-b-CD (2-O-Ts-b-CD) or mono-[6-O-(p-tolysulfonyl)]-b-CD (6-OTs-b-CD). Their binding manners and incl...

UV/titanium dioxide (TiO(2)) degradation of two xanthene dyes, erythrosine B (Ery) and eosin Y (Eos), was studied in a photocatalytic reactor. Photocatalysis was able to degrade 98% of Ery and 73% of Eos and led to 65% of chemical oxygen demand removal. Experiments in buffered solutions at different initial pH values reveal the pH dependence of the process, with better results obtained under ac...

Near-field scanning optical microscopy (NSOM) and atomic force microscopy (AFM) have been employed to spatially resolve the complex nanoscale morphologies, spectroscopy, and energy-transfer efficiencies of self-assembled multilayered structures composed of alternating layers of R-zirconium phosphate [R-Zr(HPO4)2] (ZrP) and dye-labeled poly(allylamine hydrochloride) (dye-PAH) (where dye ) Fluore...

Three new, simple, rapid and sensitive spectrophotometric methods have been developed for the assay of mebendazole (MBD) in bulk drug, tablets and suspension. First method (method A) is based on the formation of a colored ion-pair complex (1:1 drug/dye) of MBD with bromocresol green (BCG) at pH 1.99 ± 0.01 and extraction of complex into chloroform followed by measurement of yellow ion-pair comp...

Low cost activated carbon prepared from elephant dung was used as an eco-friendly adsorbent for the removal of the textile dye Rhodamine B from an aqueous solution. The adsorbent was characterized by Scanning Electron Microscope (SEM), X-Ray Diffraction(XRD), Thermo gravimetric(TG) and Fourier Transform Infra red (FT-IR)analysis. Batch adsorption experiments were carried out by varying the init...

We perform an optical study of sulforhodamine B and sulforhodamine 101 molecules solved in water droplets ~reversed micelles! that are stabilized by a surfactant and suspended in various mixtures of heptane and toluene. While the dielectric permittivity of the surrounding medium varies with the proportions of heptane and toluene, the chemical environment of the dye molecules always remains the ...