Abstract
The removal of platinum group metals (PGMs) from dilute streams is essential due to their economic value and the increasing need to recycle process water. This study presents the removal of Pd(II), Ir(III), Pt(II), Rh(III) and Au(III), from synthetic multicomponent aqueous solution using untreated, NaOH treated and ethanol treated Saccharomyces cerevisiae waste biomass obtained as a byproduct of brewery fermentation industry. A two-level four factor full-factorial experimental design and analysis was successfully employed for the test work. The effects of pH, initial metal ion concentration, temperature and biomass dosage on PGMs removal were assessed using the design of experiment (DOE) approach. Solution pH and initial metal concentration were found to be statistically significant for the adsorption of PGMs tested. Ethanol treated biomass gave the highest adsorption uptake for all the PGMs tested. The sorption uptake is in the order of Au > Pd > Pt > Ir > Rh. Desorption was carried out using acidified 0.1 M thiourea and the biosorbent was successfully regenerated and reused up to five cycles.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
