Kinetic and thermodynamic investigations on arsenic adsorption onto dolomitic sorbents

Arsenic Adsorption and its Fractions on Aquifer Sediment: Effect of pH, Arsenic Species, and Iron/Manganese Minerals

“…2. The results showed that rapid adsorption occurred at the beginning, with the adsorption maximum being reached within 8 h, which is similar to adsorbents mainly composed of silicate or carbonate, including dolomitic sorbents (Salameh et al 2010), modified montmorillonite (Ramesh et al 2007), and Fe oxide-coated sand (Gupta et al 2005). The adsorption equilibrium time was confirmed as 8 h. In addition to the equilibrium time, three conclusions were obtained briefly as follows: (1) a low pH value was conducive to As adsorption onto sediments, (2) As(V) was more readily adsorbed than As(III) on the sediment samples, and (3) FS had a stronger ability than CS to adsorb As because it had more adsorption sites.…”

Characterizations of strontium(II) and barium(II) adsorption from aqueous solutions using dolomite powder

“…Its properties are similar to that of limestone and it is known as magnesium limestone in industry [18]. The general formula of this group is (A, B) [19,20]. In the present work, dolomite as an adsorbent was applied for adsorption of strontium and barium.…”

Arsenic Adsorption onto Minerals: Connecting Experimental Observations with Density Functional Theory Calculations

“…Methods that have been developed to attenuate As such as electrocoagulation and electrodialysis [45,46], treatment with microorganisms to affect the biogeochemical cycling of As [7], and the adsorption of As onto a variety sorbents [47][48][49]. Among the sorbents used for As attenuation are organic polymers [50], and minerals such as dolomite [51], zeolites [52], and Al minerals such as alumina or gibbsite [53,54]. Alumina has been found to effectively remove iAs V [55], but it is necessary to use activated alumina to efficiently remove iAs III from solution [56].…”