remazol-black-b has been researched along with malachite-green* in 2 studies
2 other study(ies) available for remazol-black-b and malachite-green
| Article | Year |
|---|---|
Decolorization of dyes by a novel sodium azide-resistant spore laccase from a halotolerant bacterium, Bacillus safensis sp. strain S31.
The aim of this work was to find a new stable laccase against inhibitors and study the decolorization ability of free and immobilized laccase on different classes of dyes. Spores from a halotolerant bacterium, Bacillus safensis sp. strain S31, isolated from soil samples from a chromite mine in Iran showed laccase activity with maximum activity at 30 °C and pH 5.0 using 2, 2-azino-bis (3-ethylbenzothiazoline-6-sulfonate) (ABTS) as the substrate. The enzyme retained about 60% of its initial activity in the presence of 10% (v v Topics: Bacillus; Coloring Agents; Hydrogen-Ion Concentration; Iran; Laccase; Naphthalenesulfonates; Rosaniline Dyes; Sodium Azide; Soil Microbiology; Spores, Bacterial; Tolonium Chloride; Wastewater | 2018 |
Detection of double bond-ozone stoichiometry by an iodimetric method during ozonation processes.
In this study, the stoichiometry of decolorization of four dyes (Basic Yellow 28, Malachite Green, Reactive Black 5 and Reactive Red 198) was investigated using ozonation processes. The decolorization of Basic Yellow 28 (BY28) and Malachite Green (MG) was optimal at an acidic pH value of 3, whereas decolorization of Reactive Black 5 (RB5) and Reactive Red 198 (RR198) was optimal at a basic pH of 10. Stoichiometric Ratios (SR) between ozone and dyes were calculated to be 3.5, 7.1, 11 and 16.1 for BY28, MG, RB5 and RR198, respectively. The correlation between ozone-double bond (DB) with the best linear fit and the least relative error (epsilon (%)) was between aromatic ring number (A(N)(R)) and SR, with regression coefficients of 0.993 and 4.6, respectively. Also, the relationship between total double bond number (DBN(T))-SR had respective values of 5.1 and 0.983 for the epsilon (%) and regression coefficient. Additionally, the pseudo-first order decolorization rate constants, k', were decreased from aromatic ring number 2(A(2)(R)) to aromatic ring number 5(A(5)(R)). Topics: Azo Compounds; Coloring Agents; Hydrogen-Ion Concentration; Industrial Waste; Kinetics; Models, Chemical; Naphthalenesulfonates; Ozone; Rosaniline Dyes; Time Factors; Triazines; Waste Disposal, Fluid; Water Pollutants, Chemical; Water Purification | 2010 |