[Cadmium adsorption by biochar prepared from pyrolysis of silk waste at different temperatures].

In this study, biochars (BC300, BC500 and BC700) were produced from silk waste through pyrolysis under oxygen-limited condition at 300, 500 and 700 ℃, respectively. The physicochemical properties of biochar were detected by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), X-ray diffractometer (XRD) and specific surface area analyzer. The Cd adsorption capacities of biochars were investigated.

Simultaneous removal of Sb(iii) and Cd(ii) in water by adsorption onto a MnFeO-biochar nanocomposite.

In this study, a jacobsite-biochar nanocomposite (MnFeO-BC) was fabricated and used to simultaneously remove Sb(iii) and Cd(ii) from water adsorption. The MnFeO-BC nanocomposite was prepared a co-precipitation method and analyzed using various techniques. The results confirm the successful decoration of the biochar surface with MnFeO nanoparticles.