Topic
Brilliant green
About: Brilliant green is a research topic. Over the lifetime, 627 publications have been published within this topic receiving 12495 citations.
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TL;DR: In this paper, the nanostructured materials were prepared and characterized by using FTIR spectroscopy, Nitrogen adsorption/desorption, NMR spectrograph, X-rays diffraction, Scanning electron microscopy (SEM), Thermogravimetric analysis (TGA) and Zeta potential.
23 citations
TL;DR: In this paper, the authors reported successful preparation of Ag@CdO nanocomposite via green methodology to remove Brilliant green from wastewater using various analytical studies, including SEM-EDS and TEM examination.
Abstract: Contamination of organic and inorganic compounds has become one of the increasing concerns due to their detrimental effects on the environment and human health. The presence of such organic and inorganic compounds in wastewater poses a challenge in water remediation. Herein, we report successful preparation of Ag@CdO nanocomposite via green methodology to remove Brilliant green from wastewater. The synthesized Ag@CdO nanocomposite was characterized using various analytical studies. SEM–EDS study of Ag@CdO nanocomposite showed an agglomerated spherical shape with signatures of Cd, Ag, and O, and XRD displays characteristic crystallinity. A Zeta potential value − 17.5 mV reveals excellent stability. TEM examination showed an average particle size of 7 nm and 50 nm for bare AgNPs and Ag@CdO nanocomposite, respectively. The maximum photodegradation was obtained in 90 min with Ag@CdO nanocomposite and AgNPs. The maximum degradation efficiency of AgNPs and Ag@CdO nanocomposite was found to be 90% and 96%, respectively, under optimum conditions of temperature; 55 °C and pH 6. In addition, Ag@CdO nanocomposite could be readily regenerated and reused at least 5 times without significant performance loss. Thus, the premeditated photocatalytic Ag@CdO nanocomposite-based platform can further be exploited for remediation of different organic effluents from industrial wastewaters. Furthermore, this work opens new avenues for the enhancement of photocatalytic efficiency of many catalysts already under observation.
23 citations
TL;DR: Results of the study showed that water from polluted river as well as municipal wastewaters may be a precious source for isolation of bacterial strains with the wide spectrum and high decolorization potential.
Abstract: The aim of this study was the isolation of bacterial strains which have the ability to decolorize synthetic dyes belonging to different chemical groups. The samples for bacterial isolation were collected from aqueous environments—two activated sludges and polluted local river. At the first stage of screening (performed on the solid media supplemented with two dyes—azo Evans blue or triphenylmethane brilliant green), 67 bacterial strains were isolated capable to decolorize the used dyes. In the further study, six dyes with different chemical structures were used: fluorone dyes (Bengal rose, erythrosine), triphenylmethane dyes (brilliant green, crystal violet), azo dyes (Evans blue, Congo red). Initial concentration of each of these chemicals in samples was 0.1 g/l. Obtained results showed that only 31 isolates were able to decolorize all six used dyes (with different efficiencies). Among them, 11 strains were isolated from the river (55% of isolates from this site) and 20 from activated sludges collected from two different treatment plants (15 from the first water treatment plant and 5 from the second which were 42 and 43% of isolated cultures respectively). The decolorizing microorganisms are mostly isolated from different industrial sewages (e.g., textile industry), but results of the study showed that water from polluted river as well as municipal wastewaters may be a precious source for isolation of bacterial strains with the wide spectrum and high decolorization potential. In general, there were no statistically significant differences between decolorization abilities of strains isolated from different sites. The group of dyes that was removed with the highest yield was triphenylmethanes (75.6%), followed by fluorones (70.0%) and azo group (60.9%). The analysis of decolorization efficiency of the individual dyes revealed the best removal results in case of triphenylmethane brilliant green (average removal 85.7%), followed by fluorone erythrosine (average removal 78.9%), triphenylmethane crystal violet (average removal 65.5%), azo Evans blue (average removal 64.4%), fluorone Bengal rose (average removal 61.0%), and azo Congo red (average removal 57.4%). Obtained results revealed that the dye susceptibility to decolorization depends on the characteristic chemical structure of given dye groups but more important is chemical structure of strictly given dye within the group.
22 citations
TL;DR: In this article, a chelating resin was prepared by coupling Amberlite XAD-4 with brilliant green through an azo spacer, and it was used for preconcentration and separation of mercury(II) in environmental samples prior to its determination by spectrophotometry.
Abstract: A new chelating resin was prepared by coupling Amberlite XAD-4 with brilliant green through an azo spacer, and it has been used for preconcentration and separation of mercury(II) in environmental samples prior to its determination by spectrophotometry. The sorption capacity of functionalized resin is 4.12 mg g−1. Spectrophotometric determination of Hg(II), free from the interference of almost all cations and anions found in the environmental water samples, is a notable advantage of the method. The determination of Hg(II) in wastewater and seawater was carried out by the present method and cold vapor atomic absorption spectrometry (CVAAS).
22 citations
TL;DR: In this paper, various major types of dyes of all major types were tested for their suitability as the primary dye in the Gram stain and when a counterstain was not used, some dyes were found to differentiate Gram positive from Gram negative organisms.
Abstract: Dyes of all major types were tested for their suitability as the primary dye in the Gram stain. When a counterstain was not used, some dyes of all types were found to differentiate Gram-positive from Gram-negative organisms. When a counterstain was used, these dyes were found to vary greatly in their suitability. Those dyes found to be good substitutes for crystal violet were: Brilliant green, malachite green, basic fuchsin, ethyl violet, Hoffmann's violet, methyl violet B, and Victoria blue R. All are basic triphenylmethane dyes. Acid dyes were generally not suitable. Differences in the reaction of Gram-positive and Gram-negative cells to Gram staining without the use of iodine were observed and discussed but a practical differentiation could not be achieved in this manner. Certain broad aspects of the chemical mechanism of dyes in the gram stain are discussed.
22 citations