Facile synthesis of yeast cross-linked FeO nanoadsorbents for efficient removal of aquatic environment contaminated with As(V).

A facile solvothermal method was adopted to prepare monodispersed surface functionalized FeO nanoparticles via self assembly process. The pure yeast, diethylamine functionalized FeO nanoparticles (DMNPs) and yeast cross-linked FeO nanoparticles (YcMNPs) were used for the efficient removal of arsenate from aqueous solution. The crystal structure, morphology and magnetic properties of these nanoparticles were characterized by using X-ray diffraction, field emission scanning electron microscopy and vibrating sample magnetometer.

As(V) removal using carbonized yeast cells containing silver nanoparticles.

The present study involves the development of adsorbent containing silver nanoparticles for arsenate removal using silver reducing property of a novel yeast strain Saccharomyces cerevisiae BU-MBT-CY1 isolated from coconut cell sap. Biological reduction of silver by the isolate was deduced at various time intervals. The yeast cells after biological silver reduction were harvested and subjected to carbonization at 400 °C for 1 h and its properties were analyzed using Fourier Transform Infra-Red spectroscopy, X-ray diffraction, scanning electron microscope attached with energy dispersive spectroscopy and transmission electron microscope.