Adsorption of trihalomethanes by humin: Batch and fixed bed column studies

Interactions between humin and potentially toxic metals: Prospects for its utilization as an environmental repair agent

“…The presence of carboxylate groups, main chelating groups of metallic species, can be evidenced by the band near 1620 cm À1 with observed stretching of CH bonds near to 2925 cm À1 [24].…”

“…Therefore, 50 mL aliquots of the solutions of prepared metals at different pH levels were added to falcon-type tubes containing 100.00 mg of humin samples. The tubes were kept in a mechanical shaker at a temperature of 25 AE 3 C. After reaching the contact times, the solutions were filtered using a system equipped with membrane filters with a pore size of 0.45 mm, and the potentially toxic metals were determined by inductively coupled argon plasma atomic emission spectroscopy (ICP-OES) [24]. The Cu 2+ , Cr 3+ , Pb 2+ , Cd 2+ and Ni 2+ concentrations adsorbed in the humin were then calculated based on the difference between the initial and final concentrations of the solution, using Eq.…”

Adsorption of Eriochrome Black T (EBT) dye using activated carbon prepared from waste rice hulls—Optimization, isotherm and kinetic studies

“…However, since the y-intercept (C i ) is not equal to zero, it implies that this mechanism does not solely limit the overall adsorption process. The rate-limiting step maybe a complex combination of chemisorption and intraparticle transport [65].…”

Removal of Basic Fuchsin dye from water using mussel shell biomass waste as an adsorbent: Equilibrium, kinetics, and thermodynamics

“…However, the y-intercept C i is not equal to zero, which implies that this mechanism does not solely limit the overall adsorption process. The rate-limiting step may be a complex combination of chemisorption and intraparticle transport [17].…”