FUNCTIONALIZED CELLULOSE BEADS WITH ACTIVATED CARBON Fe3O4/CoFe2O4 FOR CATIONIC DYE REMOVAL

Abstract

Modified regenerated cellulose beads functionalized with activated carbon (AC), as well as magnetic cellulose beads of AC-Fe 3 O 4 and AC-CoFe 2 O 4 , were synthesized. The AC was further used as adsorbent for the removal of cationic methylene blue (MB) dye from aqueous solution. The magnetic cellulose beads possessed a high magnetic response to an external magnetic field and their ease of recovery could be facilitated with the aid of a magnetic field. The synthesized adsorbents were characterized using a Field Emission Scanning Electron Microscope (FESEM), as well as by energy dispersive X-ray (EDX) spectrometry and thermogravimetric analysis (TGA). In comparison with the synthesized magnetic cellulose beads, the maximum adsorption capacity of the adsorbent beads assisted with AC, AC-Fe 3 O 4 and AC-CoFe 2 O 4 was of 54, 53 and 50 mg/g, respectively. The kinetic study of the adsorption of MB dye onto the adsorbents was performed at different parameters (initial dye concentration and temperature). The kinetics of the adsorption fit well with the pseudo-second-order model.

Application of Efficient Magnetic Particles and Activated Carbon for Dye Removal from Wastewater

“…The excellent adsorption application of activated carbon materials has been known for years. In our previous study, 3 we investigated the adsorption capacity of coconut shell AC with assistance from magnetic particles for MB dye removal. The dye removal efficiency of granular coconut shell activated carbon (200 Mesh) achieved 99.7% within 2 min, whereas the encapsulated AC on regenerated cellulose beads was hindered by the MB uptake and achieved complete adsorption after 90 min.…”

“…Four independent variables, including contact time (1−3 h), initial dye concentration (40−80 mg/ L), initial pH solution (2−4), and adsorbent mass (3−50 g), were used to investigate their influence on the adsorption capacity of MNSA for Coomassie brilliant blue dye. The surface area and total pore volume of the magnetic C material are 106.4 m 2 /g and 0.220 g/cm 3 , respectively. pH is the most critical variable in dye removal (65.15%).…”

“…Moosavi et al 3 synthesized regenerated cellulose (bleached kenaf) beads functionalized with activated carbon (AC), as well as magnetic cellulose beads of AC-Fe 3 O 4 and AC-CoFe 2 O 4 as adsorbents for MB dye removal. The adsorbents were characterized by FESEM, EDX, and TGA.…”

A review on the current approach for the sustainable production of nanocomposites from agricultural wastes and their application for the adsorption of organophosphate flame retardants

“…[136][137][138][139] The most commonly utilized metallic salts include Zn, Mg, Fe and Co among others. [140][141][142][143] while others include noble metal nanoparticles such as silver (Ag) and gold (An) 139,144,145 and nanoscale zerovalent metals (NZVI) [Zn (II), Cu(II), Cd(II) and Co(II)]. 134 The Ag and Au nanoparticles have the capacity to enhance the quantity of surface atoms on biochar which, in turn, increases the surface energy of the substrate to which they are attached.…”

“…153 Cellulose beads can be chemically modified before or after the shaping procedures, and then, applied for the removal of contaminants from aqueous solutions. For instance, Moosavi et al 140 extracted cellulose from raw kenaf core, shaped it into cellulose beads and functionalized them with three materials: activated carbon, iron oxide, and cobalt-iron oxide (AC, Fe 3 O 4 and Co-Fe 2 O 4 ). This yielded AC-cellulose beads, AC-Fe 3 O 4 cellulose beads and AC-CoFe 2 O 4 cellulose beads respectively.…”