Synthesis, characterization of magnetic chitosan/active charcoal composite and using at the adsorption of methylene blue and reactive blue4

R emoval of Cationic Dye – Methylene Blue - from Aque ous Solution by Adsorption on Fly Ash - based Geopolymer

“…According to the results, the correlation value R 2 for Langmuir model indicates that the adsorption MB using FAG data can be adequately modeled by the Langmuir and which indicate that adsorption of MB was made up homogenous surface and monolayer adsorption. This result is similar to other works on MB dye adsorption onto Platanus orientalis [77] and CTN/AC [78]. The maximum uptake capacity for MB removal by FAG was higher with 37.04 mg/g.…”

“…Thermodynamic parameters are important in the design of adsorption process. It is necessary to define the change of thermodynamic parameters to predict the feasibility and mechanism of adsorption [80]. The thermodynamic parameters were determined by using following equations:…”

Cr(VI) removal using Fe₂O₃-chitosan-cherry kernel shell pyrolytic charcoal composite beads

“…To prepare Fe 2 O 3 -chitosan-pyrolytic charcoal composite beads (Fe-C-CKSC), the method proposed by Karaer and Kaya [14] was used basically. Accordingly, 3.0 g of chitosan was stirred in 90 mL of 3% acetic acid solution for 12 h. 4.8 g of Fe 2 O 3 nanoparticle was dissolved in 10 mL of 3% acetic acid solution and added to the mixture and stirred further for 2 h. Then, 3.0 g of pyrolytic charcoal was blended with 100 mL of 3% acetic acid solution and added to the mixture and stirred for additional 3 h. The mixture obtained was dropped into 500 mL of 3 M NaOH solution and the beads were formed.…”

“…Jiang et al [5] prepared magnetically separable millimeter-sized chitosan beads containing nanosized γ-Fe 2 O 3 for the removal of Cr(VI). Karaer and Kaya [14] synthesized magnetic chitosan/activated carbon composite using Fe 3 O 4 for the removal of methylene blue and reactive blue4. Recently, there has been a growing interest in the use of magnetic materials as adsorbents.…”

Synthesis of Magnetic Microspheres with Sodium Alginate and Activated Carbon for Removal of Methylene Blue

“…Therefore, finding the best fitting isotherm is of great importance. The parameters, obtained by fitting the experimental data to Langmuir (Equation (5)) and Freundlich (Equation (6)) isotherms [31] are listed in Table 3. $\frac{C_e}{q_e}=\frac{1}{q_m}{C}_e+\frac{1}{q_m{K}_L}$ $\ln q_e=\frac{1}{n}\ln C_e+\ln K_F$…”