Preparation of chitosan/poly(acrylic acid) magnetic composite microspheres and applications in the removal of copper(II) ions from aqueous solutions

One-step synthesis of amino-functionalized attapulgite clay nanoparticles adsorbent by hydrothermal carbonization of chitosan for removal of methylene blue from wastewater

“…Obviously, the Langmuir isotherm exhibits higher correlation coefficient (R 2 > 0.99) than Freundlich isotherm, indicating that the Langmuir isotherm is an appropriate description of the data for MB adsorption. The maximum adsorption capacity is found to increase from 161.29 to 226.24 mg g −1 with an increase in temperature from 298.15 to 318.15 K. Moreover, the Freundlich exponent n for all the three temperatures lies in the range of 1-10 for classification as favorable adsorption, indicating that the ATP@CCS nanocomposite is applicable for the adsorption of MB over the entire range of concentrations studied [29,35]. A comparative study of our prepared ATP@CCS to several reported adsorbents is preformed, and the results are presented in Table 5.…”

Synthesis of Acid Hydrolysis Lignin-g-Poly-(Acrylic Acid) Hydrogel Superabsorbent Composites and Adsorption of Lead Ions

“…The plot of Ce/qe against Ce would be a straight line, and then qm and b can be obtained from the slope and intercept of the plot. The essential feature of the Langmuir isotherm is RL (Yan et al 2012), which is a dimensionless separation factor or equilibrium parameter, defined as,…”

Biological Effects and Extraction Processes Used to Obtain Marine Chitosan

“…Jung & Zhao (2012) composite microspheres that could be easily regenerated at lower pH and reused have been used to remove Cu 2+ from aqueous solutions (Yan et al 2012). The chelating capacity of chitosan can be improved using nanofibers, with a huge surface area.…”