Open AccessSimultaneous Removal of Binary Mixture of Cationic Dyes onto Bombax Buonopozense Bark: Plackett–Burman and Central Composite Design
Publication year - 2021
Publication title -
biointerface research in applied chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.216
H-Index - 11
ISSN - 2069-5837
DOI - 10.33263/briac121.326338
Subject(s) - adsorption , central composite design , cationic polymerization , chemistry , langmuir adsorption model , fourier transform infrared spectroscopy , chromatography , plackett–burman design , nuclear chemistry , analytical chemistry (journal) , response surface methodology , chemical engineering , organic chemistry , engineering
In this study, the retention of BB41 and SAF was studied using a PBD three-level screening plan, as the initial concentration of dyes, BBP mass, pH, and temperature. Pareto analysis to select the pH and the adsorbent mass as influential factors to make a CCD optimization plan, the optimization has established a quadratic mathematical model for each dye. The binary system's common optimal conditions were selected to be a BBP mass of 0.46 g/l and a pH of 8.54. Under optimal conditions, the removal efficiency of BB41 and SAF is 83.76 and 73.23%, respectively, with the desirability of 1.00, which is confirmed by a later experiment. The equilibrium adsorption data of BB41 and SAF in the mixture are well explained by the Langmuir isotherm with an adsorption capacity of 75.18 and 80.64 mg/g, respectively. A good fit of the experimental data according to the pseudo-second-order kinetic model, with a correlation coefficient R2> 0.99. Finally, Bombax buonopozense (BBP) was characterized using FTIR, SEM and elemental analysis.