Iron oxide nanoparticles stabilized by lignocellulosic waste as green adsorbent for Cr(VI) removal from wastewaterImmaculate L.A. Ouma, Eliazer B. Naidoo and Augustine E. OfomajaEur. Phys. J. Appl. Phys., 79 3 (2017) 30401DOI: https://doi.org/10.1051/epjap/2017160406