Adsorption Processes of Lead Ions on the Mixture Surface of Bentonite and Bottom Sediments

作者：Hegedusova Alzbeta^*; Hegedus Ondrej; Toth Tomas; Vollmannova Alena; Andrejiova Alena; Slosar Miroslav; Mezeyova Ivana; Pernyeszi Timea

来源：Bulletin of Environmental Contamination and Toxicology, 2016, 97(6): 876-880.

DOI：10.1007/s00128-016-1950-0

• Lead adsorption
• Bentonite
• Environment
• Bottom sediment

The adsorption of contaminants plays an important role in the process of their elimination from a polluted environment. This work describes the issue of loading environment with lead Pb(II) and the resulting negative impact it has on plants and living organisms. It also focuses on bentonite as a natural adsorbent and on the adsorption process of Pb(II) ions on the mixture of bentonite and bottom sediment from the water reservoir in KoliAany (SR). The equilibrium and kinetic experimental data were evaluated using Langmuir isotherm kinetic pseudo-first and pseudo-second-order rate equations the intraparticle and surface diffusion models. Langmuir isotherm model was successfully used to characterize the lead ions adsorption equilibrium on the mixture of bentonite and bottom sediment. The pseudo second-order model, the intraparticle and surface (film) diffusion models could be simultaneously fitted the experimental kinetic data.

• 出版日期2016-12