Green grape marc biosorbents preparation for mercury removal in aqueous media

In this study, grape marc waste from Negroamaro (a South of Italy vine variety) winery production was used to prepare biosorbents for Hg(II) removal in aqueous media. A green approach develop a proper biosorbent through two different washing procedures. particular, the common chloridric acid and greener citric were evaluated. The prepared using as agent (GM-CA) gave similar results washed with HCl (GM-HCl) maximum adsorption capacity 36.39 mg g-1. Isothermal studies revealed heterogeneous physical on biosorbents. Moreover, FTIR analysis marc-based without confirmed ionic interactions that fit pseudo-second-order kinetic model. Furthermore, no significant observed when other heavy metals, copper(II) nickel(II), previously studied sorbents, considered. Finally, reusability GM-CA also demonstrated over three cycles. Thus, preparation work can be considered suitable developing