Removal of reactive blue 19 from aqueous solutions using NiO nanoparticles: equilibrium and kinetic studies

Laccase Immobilization on Poly(p-Phenylenediamine)/Fe3O4 Nanocomposite for Reactive Blue 19 Dye Removal

“…Thus, the adsorption of dye on the carrier was partly attributed to ionic electrostatic attractions between the positively charged sites of the carrier surface and the negative sulfonyl (−SO 3 ) groups of dye molecules (Figure 1). Additionally, other adsorption mechanisms such as hydrogen bonding may play a partial role, which may be due to the interactions of groups on the surface of carrier with groups of the RB19 molecule [39]. The dye removal efficiency of immobilized Lac (80%) was clearly higher than that of free Lac under the same conditions, and was even higher than the sum of dye removal by free Lac and the carrier (60%), which can be attributed to two causes.…”

Adsorptive removal of reactive dyes from aqueous solutions using zinc oxide nanoparticles

“…Among them, adsorption is highly preferred for wastewater treatment because of its high efficiency, ease of operation, and simplicity of design . Moreover, because of the chemical and biological stability of most industrial dyes, their removal using chemical and biological methods are ineffective, and adsorption has been recognized as the most efficient technique for the removal of dyes from contaminated water …”

“…These anionic dyes are very toxic, exhibiting mutagenic and carcinogenic effects toward living organisms . Considering the chemical stability and low biodegradability of these reactive dyes, their removal from dyeing effluents and wastewaters by a physical method such as adsorption is very important to decrease their impact on the environment . Thus, in the present work, ZnO NPs were prepared through a facile precipitation method and utilized for the uptake of AB210 and RB19 through a batch system.…”

“…ineffective, and adsorption has been recognized as the most efficient technique for the removal of dyes from contaminated water. [16][17][18][19][20] Different materials such as clay, polymers, zeolite, agricultural waste, silica, metal oxides, and carbon-based sorbents (carbon black, activated carbon, and carbon nanotubes) have been developed as adsorbents for water treatment. [21] Activated carbon is the most commonly used adsorbent for the treatment of wastewater.…”

“…[11,12] Considering the chemical stability and low biodegradability of these reactive dyes, their removal from dyeing effluents and wastewaters by a physical method such as adsorption is very important to decrease their impact on the environment. [8,[17][18][19][20] Thus, in the present work, ZnO NPs were prepared through a facile precipitation method and utilized for the uptake of AB210 and RB19 through a batch system. AB210 and RB19 serve as models of azo and anthraquinone dyes, respectively, which are widely used in textile industries but are particularly harmful to the environment.…”