Kinetic and thermodynamic investigations on arsenic adsorption onto dolomitic sorbents

This work discusses the feasibility of arsenic uptake onto raw dolomite which is considered to be a potential inexpensive adsorbent. Thermodynamic and kinetic experiments were undertaken to assess the capacity and rate of As uptake onto raw dolomite. Experimental data were mathematically described using pseudo first-order and pseudo second-order models. Thermodynamic results indicate that the adsorption follows an exothermic chemisorption process. The experimental data indicate successful removal of As(V) ion from aqueous solution indicating that dolomite be used as an inexpensive treatment process.