?url_ver=Z39.88-2004&rft_id=10.1039%2Fd1ra01599k&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=P.T.&rft.au=Tho%2C+P.T.&rft.aulast=Tho&rft.title=RSC+Advances&rft.issn=20462069&rft.atitle=Enhanced+simultaneous+adsorption+of+As(iii)%2C+Cd(ii)%2C+Pb(ii)+and+Cr(vi)+ions+from+aqueous+solution+using+cassava+root+husk-derived+biochar+loaded+with+ZnO+nanoparticles&rft.issue=31&rft.volume=11&rft.date=2021&rft.pages=18881-18897&rft.genre=article