Brilliant green

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

Humidity measuring material

Abstract: PURPOSE:To obtain a measuring material discoloring reversibly and clearly according to humidity by preparing a methanol solution containing a specified color developing indicator, a specified inorganic water absorbent and a weak acid such as oxalic acid, dipping a liquid absorbing member into the solution, and then drying said member in a specified temp range CONSTITUTION:The methanol soln containing a mixture or either of brilliant green or crystal violet as the color developing indicator, a mixture or either of ZnBr or magnesium perchlorate as water absorbent, and weak acid such as oxalic acid as acid is prepared The liquid absorbing member such as filter paper is dipped in the solution for 2-3sec, then dried at 70-80 degC to obtain a humidity measuring material The color of said material varies reversibly orange yellow soil color light green green black green purple according to the humidity The humidity in room, hot house, concrete surface, etc can be judged simply by using these colors

Assessment of Brilliant Green and Eriochrome Black T dyes adsorption onto fava bean peels: kinetics, isotherms and regeneration study

Abstract: This research aims to assess the employability of fava bean peels (FBP) as low-cost adsorbents in the removal of Brilliant Green (BG) and Eriochrome Black T (EBT) from aqueous solutions and therefore in colored wastewater treatment. Scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR), and pHPZC were used to characterize these materials. The constants of Langmuir, Freundlich, and Dubinin-Radushkevich have all been determined. The adsorption capacity of BG and EBT was 28.14 and 7.91 mg g–1, respectively, at 5 g L–1 FBP dose, 40 mg L–1 initial dye concentration, temperature 20°C, and contact time BG (80 min) and EBT (40 min). The calculated thermodynamic parameters indicated that adsorption of BG was endothermic and exothermic for EBT. The isotherm studies show that the adsorption experimental data of both dyes are fitted well by the Freundlich isotherm model. The adsorption of the two dyes studied on fava bean peels is perfectly described by a pseudo-second-order kinetic model. Cyclic experiments have indicated that the current bio-adsorbent can be effectively reused to remove BG and EBT from aqueous solutions. Removal efficiencies remained above 84% and 10% for BG and EBT respectively even after four adsorption–desorption cycles. As a consequence of these relevant results, our inexpensive and environmentally friendly material could provide enormous application prospects in large-scale wastewater treatment in the industrial level.

Fed-Batch Decolourization of Mixture of Brilliant Green and Evans Blue by Bacteria Species Applied as Pure and Mixed Cultures: Influence of Growth Conditions

Abstract: Synthetic dyes, generally resistant, toxic and carcinogenic presents a substantial risk to the environment and health of human. The present study was aimed to decolourize a dye mixture (Evans blue and brilliant green) by selected bacterial strains cultivated at different growth conditions (e.g. unmodified, correction of pH value and supplementation with nutrients). The bacterial strains used as pure and mixed cultures include facultative anaerobes Aeromonas hydrophila (Abs37), Citrobacter sp. (Cbs50) and obligatory aerobe Pseudomonas putida (Pzr3). The efficiency of removal of all successive doses of dye mixture (4–5 doses, total load 170–200 mg/l) was tested in static conditions in fed-batch bioreactors. The modification of bacteria growth conditions influenced on decolourization efficiency: most advantageous was pH value correction combined with nutrient supplementation then pH correction alone and nutrient supplementation (final removal results 95.6–100%, 92.9–100% and 89.1–97.2%, respectively). The mixed bacterial cultures removed the total load of dyes with higher efficiency than pure strains (final removal 95.2–100% and 84.0–98.2%, respectively). The best results were obtained for the mixture of facultative anaerobe Citrobacter sp. and obligatory aerobe Pseudomonas putida which removed the highest load of dye mixture (200 mg/l introduced at five doses) in the shortest time (288 h), while the others pure and mixed cultures needed 425–529 h for removal four doses of dye mixture (total load 170 mg/l). The zoo- and phytotoxicity decreased after these processes (from V class of toxicity (extremely toxic) even to II class (low toxicity)). The main mechanisms of decolourization was biotransformation/biodegradation, supported by sorption.

New visualizing reagents for selected phenolic drugs investigated by thin layer chromatography

Abstract: Thirteen new visualizing reagents have been used to detect 13 phenolic drugs following thin layer chromatography on silica gel layers. Limits of detection (detectability), detectability index, and broadening index were determined for these drugs following use of these visualizing reagents. Aniline blue and brilliant green were the best and most universal visualizing reagents for the phenolic drugs investigated. Densitograms of selected phenolic drugs after spraying with aniline blue and brilliant green are presented.