The use of hydrogen peroxide and sodium hypochlorite for the oxidation of a 1 × 10−4 M aq solution of C.I. Acid Brown 349 was investigated. The influence of Fe2+ concentration ranging from 0 to 50 mg L−1 and various doses of oxidant at different pH values and temperatures was investigated. High...

Decolorization of reactive blue 13 (RB13), a sulphonated azo dye, was investigated using hydrodynamic cavitation (HC). The aim of research article is to check the influence of geometrical parameters (total flow area, the ratio of throat perimeter to its cross-sectional area, throat shape and siz...

Three-dimensional (3D) N, F-codoped flower-like TiO2 microspheres were successfully synthesized by a hydrothermal method combined with calcination process. The as-prepared samples were characterized by XRD, FE-SEM and EDS. The adsorption abilities of prepared samples were investigated for the re...

Nitrogen-doped titania semiconductor thin films, with photocatalytic properties and a high transmittance in the visible range, have been deposited by unbalanced reactive magnetron sputtering on glass substrates, using d.c. pulsed power supplies. In order to increase the photocatalytic efficiency...

A microstructured Sb-doped SnO2/PbO2 electrode was synthesized and investigated for the treatment of C.I. Reactive Blue 194 (RB 194) in aqueous solution. An electrochemical method was employed for the electrodeposition of PbO2 on an ordered microstructured TiO2-NTs template to obtain a large spe...

In textile inkjet printing, the surface tension and viscosity of the reactive dye solution are two important physical properties to control the droplet formation. In this work, surface tensions and viscosities of four reactive dye solutions with/without surfactants and organic solvents were test...

In this study, the decolorization of C.I. Reactive Blue 181 (RB181), anthraquinone dye, by UV/H2O2 processes was investigated. The effects of operating parameters, such as H2O2 dosage, pH value, dye concentration and temperature were examined. The optimum conditions were determined as [H2O2] = 5...

The effect of flexible chain length of diacrylate monomers on the stabilization of blue phase liquid crystal has been studied in this study. The temperature range of the polymer stabilized blue phase liquid crystal was able to increase by altering the type of the monomer in the monomer precursor...

The H2O2/pyridine/Cu(II) process was found to be very effective in the decolorization of synthetic dyes. The efficiencies achieved with Cu(II) as the catalyst were over 90% after 10 min of reaction for all dyes except for Rifacion Yellow HE-4R and Levafix Yellow Brown E-3RL which were more resis...

This paper describes the removal of Reactive Blue 114 dye from aqueous solutions by using pomelo (Citrus grandis) peel. Pomelo peel can be described as a new, low cost, abundantly available adsorbent. The optimum adsorbent mass, dye concentration, contact time and pH were determined in this stud...

Laccase production by Trametes pubescens grown on sunflower-seed shells (SS) under solid-state fermentation (SFF) conditions in temporary immersion bioreactors was studied. Three immersion cycles were considered: 1 min immersed and 9 min non-immersed, 1 min immersed and 30 min non-immersed and 1...

The treatment of effluents from textile industry with microorganisms, especially bacteria and fungi, has recently gained attention. The present study was conducted using white rot fungi Irpex lacteus, Trametes hirsuta, Trametes sp., and Lentinula edodes for the decolorization of reactive textile...

This study assessed eight density functionals that include CAM-B3LYP, LC-ωPBE, M11, MN12SX, N12SX, ωB97, ωB97X, and ωB97XD related to the Def2TZVP basis sets together with the SMD solvation model. These are assessed in calculating the molecular properties and structure of the Blue-M1 interme...

In the present work, the performance of photocatalytic removal of reactive blue 203 (RB203) using three different additive as photocatalyst: ZnO nanoparticles (ZnO (NPs)), multi wall carbon nanotubes and ZnO (NPs) stabilized on Functionalized multi wall carbon nanotubes (ZnO (NPs)/MWCNTs) was in...

The facile synthesis of a new class of reactive hydrogen polysilsesquioxane (HPSQ, (HSiO1.5)n,) hollow spheres is reported in this work. HPSQ hollow spheres can be controllably fabricated from triethoxysilane (TES, HSi(OEt)3) as a sole precursor through a polystyrene template-directed sol–gel p...

In terms of its oxidative strength, the MnO2/Mn2+ couple is one of the strongest in the aquatic environment. The intermediate oxidation state, manganese(III), is stabilized by a range of organic ligands (Mn(III)-L) and some of these complexes are also strong oxidants or reductants. Here, we pres...

Two halotolerant bacteria isolated from water samples of saltpan located at Ramanathapuram district, Tamil Nadu and tested their dye decolourization efficiency against four textile dyes. Of the tested strains, strain CMR2 showed maximum decolourization (98%) for Reactive Blue EFAF within 24 h. F...

Chitosan (CTS) was modified by graft copolymerization with Poly(methyl methacrylate) on the premise that its C2-NH2 groups were remained. Porous particles of the grafted CTS were prepared by emulsification together with wet phase inversion and evaluated as a new adsorbent for decolorizing the C....

A comparative analysis was performed concerning the removal of two different organic dyes from model aqueous solution using an inorganic oxide adsorbent. The key element of the study concerns evaluation of the influence of the dyes’ structure and their acid-base character on the efficiency of t...

The need for cheap and efficient low-cost methodologies for water treatment is of great interest, since global fresh water demand is constantly increasing. In this context, this article reports comprehensive results on the oxidation kinetics of C.I. Reactive Blue 182 dye in aqueous solutions, us...