Brilliant green

About: Brilliant green is a research topic. Over the lifetime, 627 publications have been published within this topic receiving 12495 citations.

Effect of the Basic Strength of Attached Groups on Light Absorption Spectra I:Light Absorption of Triphenylmethane Dyes

Abstract: The electronic energy levels of typical triphenylmethane dyes, Dobner's Violet and Rosaniline, are calculated through the simple LCAO MO method. The electron densities and the bond orders in the ground states are also computed. Then, with these values of electron densities and the bond orders, the differences of the coulomb and of the resonance integrals, Δ α i and Δ β i j , respectively, as well as those between the carbon and the nitrogen atoms are taken into account and the electronic energy levels calculated above are modified by perturbation method. The differences of the coulomb integrals between the carbon and the nitrogen atoms cause profound effects to the absorption energy which amount to 23∼27 Kcal (40∼50 %), whereas those of different carbon atoms affect to the absorption only 4 Kcal (10 %). The energy levels of the various derivatives of Dobner's Violet and Rosaniline, e.g. dimethyl and diethyl derivatives of Dobner's Violet, Malachite Green, Brilliant Green, Hoffmann's Violet. Crystal Violet...

Superior adsorptive removal of brilliant green and phenol red dyes mixture by CaO nanoparticles extracted from egg shells

Abstract: Calcium oxide (CaO) is an up-and-coming adsorbent, effectively accessible and extractable from natural resources. In this paper, the extraction and characterization of CaO extracted from eggshells and its adsorption efficiency is compared to commercially available CaO. The extracted CaO from egg shells was characterized for average hydrodynamic size through DLS, surface area (BET) (92 m2g−1), X-Ray Diffractometer (XRD), surface morphological studies (SEM), High Resolution TEM (HRTEM), electro-kinetic factor (zeta potential) and adsorption studies. The lattice strain and crystallite size for annealed (900 °C) nanospheres were assessed by W–H analysis from powder XRD data and the outcomes were found to be in good agreement with TEM results (40–50 nm). The current work reports the capability of CaO nanospheres towards removal of cationic (Brilliant Green) and anionic (Phenol Red) dye individually and their binary mixture as compared to monetarily CaO. Adsorption studies in binary system displayed that the extracted CaO showed higher adsorption (98%) of Brilliant Green (BG) than Phenol Red (PR) which is 78%, where strong electrostatic interactions played a significant role. The adsorption performance was evaluated in terms of Chemical Oxygen Demand (COD) that exhibited reduction up to 90.6% and followed Langmuir adsorption isotherm. Further, the catalysts’ reusability study was taken in pellet form so that it can be separated effortlessly from the reaction mixture. Calcium oxide (CaO) nanospheres (40–50 nm) extracted from waste egg shells exhibited a better surface structural and electro-kinetic properties and efficiently adsorbed cationic and anionic dye separately, and in their binary mixture than commercial CaO. This reaction system was found to be capable in reducing the concentration of COD upto 90.6% during brilliant green and phenol red dye removal through Langmuir type adsorption.

Cloud Point Extraction of Four Triphenylmethane Dyes by Triton X-114 as Nonionic Surfactant

Abstract: A method for removing four triphenylmethane dyes from wastewater by cloud point extraction with the nonionic surfactant Triton X-114 (TX-114) was developed. The triphenylmethane dyes were crystal violet, ethyl violet, malachite green and brilliant green. The cloud point of TX-114 generally increased in the presence of any of the four dyes. In the cloud point system, these dyes were solubilized into a coacervate phase that left a color-free dilute phase. The extraction efficiency of the dyes increased with the temperature, TX-114 concentration, and salt (NaCl and CaCl2) concentration. More than 97% TX-114 in the dilute phase was recovered by adjusting the volume ratio of dichloromethane to the dilute phase. The Langmuir-type adsorption isotherm was used to describe the dye solubilization. The Langmuir constants m and n were calculated as functions of temperature. The results showed that the solubilization of the triphenylmethane dyes in the cloud point system was related to the partition coefficient and th...

Observations on the Rate of Growth of B. Coli

Abstract: 1. The normal rate of growth of B. coli in peptone water at 37 C. 2. The effect of the age of the culture on the rate of growth. 3. The effect of crystal violet and brilliant green. 4. The rate of growth in various standard mediums. 5. The effect of varying amounts of bile salts. 6. The effect of varying amounts of peptone. 7. The effect of dipotassium phosphate. 8. The effect of Liebig' s beef extract.