Raphia-Microorganism Composite Biosorbent for Lead Ion Removal from Aqueous Solutions

Materials

Paweł Staroń¹  Jarosław Chwastowski¹ 

[1] Department of Engineering and Chemical Technology, Cracow University of Technology, 24 Warszawska Str., 31-155 Cracow, Poland;

关键词: Saccharomyces cerevisiae;    immobilization;    adsorption;    biosorption;    equilibrium;    kinetic;   

DOI  :  10.3390/ma14237482

来源: DOAJ

【 摘 要 】

This study investigated the possibility of obtaining a raphia-microorganism composite for removing lead ions from aqueous solutions using immobilized yeast cells Saccharomyces cerevisiae on Raphia farinifera fibers. The obtained biocomposite was characterized using scanning electron microscopy and Fourier transform infrared spectroscopy. Studies were conducted to determine the influence of contact time, initial concentration of Pb(II), and pH allowed for the selection of nonlinear equilibrium and kinetic models. The results showed that the biocomposite had a better Pb(II) removal capacity in comparison to the raphia fibers alone, and its maximum Pb(II) adsorption capacity was 94.8 mg/g. The model that best describes Pb(II) sorption was the Temkin isotherm model, while kinetic studies confirmed the chemical nature of the sorption process following the Elovich model. The obtained research results provide new information on the full use of the adsorption function of biomass and the ubiquitous microbial resources and their use in the remediation of aqueous environments contaminated with heavy metals.

【 授权许可】

Unknown