Removal of Reactive Blue 21 onto magnetic chitosan microparticles functionalized with polyamidoamine dendrimers

A critical review on recent advancements of the removal of reactive dyes from dyehouse effluent by ion-exchange adsorbents

“…By using a strong magnet, the used adsorbent can be easily separated. The investigated magnetic nanoparticles may include laccase immobilized epoxy-functionalized magnetic chitosan beads [Bayramoglu et al, 2010], magnetic chitosan microparticles functionalised with polyamidoamine dendrimers [Wang et al, 2015], magnetic N-lauryl chitosan particles [Debrassi et al, 2012], glutaraldehyde (GLA) cross-linked magnetic chitosan nanoparticles [Elwakeel et al, 2009], chitosan-based magnetic microspheres [Xu et al, 2018], glutaraldehyde cross-linked magnetic chitosan nanocomposites [Kadam and Lee, 2015], modified magnetic chitosan microspheres [Jafari et al, 2016], quaternized magnetic resin microspheres [Li et al, 2014], magnetic carbon nanotube--carrageenan-Fe 3 O 4 nanocomposite [Duman et al, 2016], quaternized magnetic microspheres [Shuang et al, 2012], O-carboxymethyl chitosan-N-lauryl/ -Fe 2 O 3 magnetic nanoparticles [Demarchi et al, 2015], L-arginine-functionalized Fe 3 O 4 nanoparticles [Dalvand et al, 2016], and magnetic Fe 3 O 4 /chitosan nanoparticles [Cao et al, 2015]. The nanoparticles are mostly made magnetic by forming either Fe 2 O 3 or Fe 3 O 4 nanoparticles in-situ within the organic or inorganic nanoparticles.…”

Study of the effectiveness of the third generation polyamideamine and polypropylene imine dendrimers in removal of reactive blue 19 dye from aqueous solutions

“…According to the findings of our study, by increasing adsorbent concentration until optimal dosage (1.6 g/L), dye removal efficiency by PAMAM and PPI dendrimers increased. It could be due to the increased surface area of the adsorbent and the number of available active sites for adsorption (14). In the study of Ghaneian et al on the effect of adsorption of the Russian knapweed flower powderon the removal of RB19, the results showed that by increasing the adsorbent dose from 0.2 to 0.6 g/100 mL, removal efficiency increased from 72% to 82% (16).…”

“…In another study, PPI and chitosan were evaluated as a biopolymer to remove reactive black 5 and reactive red 198 (5). The microparticles of polyamide imine-chitosan have been used as an adsorbent for the removal of reactive blue 21 (14). In this study, the G3 (PAMAM and PPI) dendrimers were used as the adsorbents for the removal of RB19 dye from wastewater.…”

Magnetized chitosan nanocomposite as an effective adsorbent for the removal of methylene blue and malachite green dyes

“…The kid is the IPD rate constant (mg g -1 min -1/2 ), which can be calculated from the slope of the qt versus t 1/2 plot (figure not shown). The IPD plot consisted of three sequential steps: the initial step of the plot representing the surface adsorption and rapid external diffusion and shows the existence of the boundary layer (Wang et al 2015). The second stage corresponds to the particle diffusion, where adsorbate molecules traverse within the pores of the adsorbent, and the third region is the equilibrium approaching stage (Mane and Vijay Babu 2013;Tan and Hameed 2017).…”