Bioremediation of Cr(VI) Polluted Wastewaters by Sorption on Heat Inactivated Saccharomyces cerevisiae Biomass

摘要: The potential of heat inactivated Saccharomyces cerevisiae in the bioremoval and reduction Cr (VI) ions from wastewaters was evaluated terms metal uptake time at equilibrium, biosorption efficiency, by varying pH, biosorbent doses, contact temperature, batch mode. During sorption process, biomass yeast is capable reducing Cr(VI) to Cr(III). Different kinetic models based on adsorption are used represent data S. cerevisiae, explaining mechanism heavy metals rate-controlling steps, perspective full-scale process design. results indicated some differences removal different experimental conditions. FTIR SEM analysis were performed as well elucidate cerevisiae. spectra indicate that doesn't imply this case formation stable covalent bonds, but it predominantly chemical interactions, ion-exchange type. micrographs Cr-loaded yeast, indicates surface morphology change much after chromium uptaken. This leads conclusion occurs interface adsorbent.