Production, characteristics and use of magnetic biochar nanocomposites as sorbents

Magnetic biochar nanocomposites were obtained by in-situ co-precipitation of magnetite nanoparticles into carbon-based matrixes prepared by three different procedures: i) pyrolysis of sunflower husk (MBCSFH); ii) hydrothermal carbonization (HTC) of sunflower husk (MHCSFH) and iii) HTC of orange juice residue (MHCOR). Besides, two magnetic carbon nanocomposites were obtained in the same way using commercial activated carbon (MAC) and charcoal (MCC).