Enhancement of the bentonite sorption properties

A comparative study on the removal of lead from industrial wastewater by adsorption onto raw and modified Iranian Bentonite (from Isfahan area)

“…These values of adsorption capacity for raw Bentonite and modified Bentonite in comparison with other reports are considerable [36]. The equilibrium constant values (b) that related to binding energy of active site of Bentonite with ion metals for raw Bentonite, NaClBentonite, and NH 4 Cl-Bentonite are 0.0292 L/mg, 0.0044, and 0.0043, respectively.…”

Regeneration of natural zeolite polluted by lead and zinc in wastewater treatment systems

“…Table 3 compares the amount of lead and zinc adsorbed on zeolite in this work with the adsorption capacities of minerals (i.e. zeolite, vermiculite, bentonite and kaolinite) reported in the literature for lead and zinc removal [5,[7][8][9][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45][46]. The zeolite used in the present study exhibited higher [33,37,42,46] or comparable [38,40] performance for Pb(II) and Zn(II) removal compared to that of several cases reported in the literature.…”

Adsorption process of methyl orange dye onto mesoporous carbon material–kinetic and thermodynamic studies

“…The sharpness in this stage indicates a narrow pore size distribution. (3) The third stage in the adsorption isotherm is the near horizontal section beyond the p/p 0 of 0.45, which is due to a multilayer adsorption on the outer surface of the particles [25,31]. According to BET method, the specific surface area (S BET ) and pore volume are estimated to be 940 m 2 /g and 0.96 m 3 /g, respectively.…”