Adsorption of Bisphenol-A from aqueous solution using amberlite XAD-7 impregnated with aliquat 336: Batch, column, and design studies

Removal of atrazine from aqueous solutions onto a magnetite/chitosan/activated carbon composite in a fixed-bed column system: optimization using response surface methodology

“…The increase in t b and t s may be justied by the great resistance to transfer caused by an increase in the bed depth. Lonappan, and Batra et al, 28,46 observed the same trend during the adsorption of diclofenac and bisphenol A in a xed-bed column. The results presented in Fig.…”

Adsorption of Reactive Blue-13, an Acidic Dye, from Aqueous Solution Using Magnetized Activated Carbon

“…The isoelectric point experiment was done by the previously defined method. 20 A salt solution of NaCl (0.01 M) was used to find the isoelectric point of the adsorbent. It is the pH at which there is no charge on the adsorbent surface.…”

“…This is because increasing the temperature enhanced the kinetic energy of dye molecules, which defeat the attraction of RB-13 dye molecules to the adsorbent surface and made them abstain from attaching themselves to the active sites of the MAC. 20 Therefore, it is difficult to establish the equilibrium between dye molecules and MAC. The thermodynamic parameters, i.e., change in the standard enthalpy (ΔH RB °), entropy (ΔS RB °), and equilibrium constant k e RB are determined from eqs 3 and 4 and following the method described in the literature.…”

Removal of Bisphenol-A from Aqueous Solution Using Polymeric Resin Impregnated with Phosphorous Based Extractant

“…From the figure, a decrease trend was observed between the temperature and percentage removal because of increase in the kinetic energy of solute molecules. This increased in the kinetic energy reduce the interaction between the BPA molecules and adsorbent [14]. With increasing in temperature from 298 K to 333 K, % R of BPA decreased.…”