Marble Waste Sludges as Effective Nanomaterials for Cu (II) Adsorption in Aqueous Media.

ABSTRACT: This study evaluated the waste generated by a Spanish marble-producing company as adsorbent for the removal of copper (Cu [II]) from aqueous media. Six marble waste sludge samples were studied, and the following operational parameters were analyzed in discontinuous regime, including pollutant concentration, pH, temperature, nature of aqueous medium, and ionic strength. The applicability of the adsorbent material was assessed with experiments in both continuous and discontinuous regimes under close-to-real-life conditions. A pseudo-second order model yielded a better fit to the kinetic data. Application of the intraparticle diffusion model revealed two well-differentiated adsorption stages, in which the external material transfer is negligible and intraparticle diffusion is the controlling

SUBMITTER: Ramos VC 

PROVIDER: S-EPMC8466878 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature