Supporting Information

Scheme S1

Fig. S1.

Fig. S2.

Fig. S3.

Fig. S4.

Figure captions:

Fig. S1 UV-vis spectra of S. cerevisiae-AgNPs, S. cerevisiae & Ag+, AgNPs, fulvic acid, and Ag+.

Fig. S2 (A) and (B): the photographs of AgNPs and S. cerevisiae-AgNPs before centrifugation. (C) and (D): the photographs of AgNPs and S. cerevisiae-AgNPs after centrifugation with a speed of 4000 rpm.

Fig. S3 Effect of pH for Cd2+ adsorption on S. cerevisiae-AgNPs.

Fig. S4 Effect of time for Cd2+ adsorption on S. cerevisiae-AgNPs.

Table S1

Heavy metal uptake and antimicrobial activities of different adsorbents

Adsorbents / Heavy metal
uptake (mg g-1) / Antimicrobial activities / References
Formaldehyde-immobilised yeast / Cd /14.0 / No Record / Zhao and Duncan 1997
Nano TiO2 / Cd/15.2 / No Record / Engates and Shipley 2010
Silver@carbon nanocomposites / No Record / 100% inhibition / Wang et al. 2016
Ag/Fe3O4 nanocomposites / No Record / High-antibacterial activity / Ghaseminezhad and Shojaosadati 2016
silver-modified clinoptilolite / Cd/0.224-0.240 / 100% inhibition / Akhigbe et al. 2014
S. cerevisiae-AgNPs, / Cd/15.01 / 100% inhibition / This work

References

Akhigbe L, Ouki S, Saroj D, Lim XM (2014) Silver-modified clinoptilolite for the removal of Escherichia coli and heavy metals from aqueous solutions. Environ Sci Pollut Res Int 21:10940-10948. doi:10.1007/s11356-014-2888-6

Engates KE, Shipley HJ (2010) Adsorption of Pb, Cd, Cu, Zn, and Ni to titanium dioxide nanoparticles: effect of particle size, solid concentration, and exhaustion. Environ Sci Pollut Res Int 18:386-395. doi: 10.1007/s11356-010-0382-3

Ghaseminezhad SM, Shojaosadati SA (2016) Evaluation of the antibacterial activity of Ag/Fe3O4 nanocomposites synthesized using starch. Carbohydr Polym 144:454-463. doi: 10.1016/j.carbpol.2016.03.007

Wang K, Ji Q, Li H, Guan F, Zhang D, Feng H, Fan H (2016) Synthesis and antibacterial activity of silver@carbon nanocomposites. J Inorg Biochem 166:64-67. doi: 10.1016/j.jinorgbio.2016.11.002

Zhao M, Duncan J (1997) Use of formaldehyde cross-linked Saccharomyces cerevisiae in column bioreactors for removal of metals from aqueous solutions. Biotechnol Lett 19:953-955. doi:10.1023/A:1018326729241