Marleidy P Callisaya, Dairon P Fuentes, Victor H A Braga, Cristiane M Finzi-Quintão, Pedro V Oliveira, Denise F S Petri
This study aimed to evaluate effective treatment strategies for laboratory waste with an initial pH of 1.0, containing Cr6+ , Mn2+ , Co2+ , Fe3+ , Ni2+ , Cu2+ , Zn2+ , Sr2+ , Hg2+ , and Pb2+ ions, focusing on flocculation, precipitation, and adsorption techniques. The study utilized microparticles derived from Moringa oleifera seed husks (MS), cryogels of carboxymethyl cellulose (CMC), and hybrid cryogels combining CMC and MS (CMC-MS25 and CMC-MS50) as adsorbents. The optimal strategy involved raising the pH to 7 using NH4 OH, leading to the partial precipitation of metal ions...
April 18, 2024: Environmental Research