Synthesis, characterization and adsorption studies of PNIPAM based hydrogels: Plackett-Burman design methodology for optimization.

In this work, we prepared [PNIPAM-co-PSA]) hydrogel using radical polymerization and evaluated the efficiency of MB adsorption. The hydrogel's morphological structure was evaluated using SEM. Investigation and evaluation of the effective adsorption of MB from hydrogel was conducted using the Plackett Burman design. Using the PBD technique, the effects of many factors were assessed, including pH, temperature,adsorbent dosage, initial dye concentration, time, and rpm. It was shown that the removal effectiveness of MB dye increased with larger values of adsorbent dosage, pH, and beginning dye concentration. The adsorbent dose of 0.05 g / 20 ml dye solution, initial dye concentration of 5 ppm, temperature of 90 °C, and 30-minute contact duration at 650 rpm in agreement with the theoretical (83%) and actual (84%) values of percentage dye removal. [ABSTRACT FROM AUTHOR]