Ibuprofen biosorption by chemically activated Saccharomyces cerevisiae

Saccharomyces cerevisiae biomass was activated chemically, and its ibuprofen (IBP) biosorption capabilities were assessed regarding IBP removal from an aqueous solution. The effects of pH (2-10), contact time (0-90 min), concentration (5-35 mg L-1), temperature (20, 30, 40°C) evaluated in batch studies. Higher rates found at 2.0. pseudo-second-order kinetic model best described the experimental data. Both Langmuir Freundlich isotherm models equilibrium data satisfactorily. maximum capacity for onto chemically (CA-YB) estimated 13.39 g-1 40°C. activation energy calculated by Dubinin-Radushkevich 9.129 kJ mol-1, indicating that a chemical process mediated CA-YB. According to thermodynamic studies, is spontaneous endothermic. FTIR analysis revealed carboxyl, hydroxyl, phosphoryl, amino groups involved IBP. These findings indicated CA-YB could be alternative biosorbent media.
 Keywords: isotherms, kinetic, microbial biomass, pharmaceutical drugs, study.