Coffee Husk and Lignin Revalorization: Modification with Ag Nanoparticles for Heavy Metals Removal and Antifungal Assays

This study presents the use of modified coffee husk and lignin as sorbents in heavy metal ions sorption Pb(II), Cd(II), Cr(III), Cu(II) an aqueous solution. The modification was carried out by impregnation method, using silver nitrate (AgNO3) sodium borohydride (NaBH4) a nanoparticles’ (NPs) precursor, reducing agent, respectively. obtained nanocomposite material morphologically characterized electron microscopy. In addition, evaluation ions’ sorption, pseudo-first-order, pseudo-second-order kinetics modeling performed. Finally, antifungal activity evaluated on different Candida species. Coffee with AgNPs increased extraction capacity highest for Pb 2.56 mg/g 1.44 mg/g,