Removal of copper(II) and lead(II) from aqueous solution by manganese oxide coated sand

The usage of a zeolitic composite for quality improvement of copper contaminated mining wastewaters

“…This indicates that adsorption occurs rapidly within the first moments, the composite surface being almost entirely covered, and then it slowly continues. In accordance with other reported data (Han et al 2006), it can be noticed that adsorption capacity drops as the adsorbent amount increases. This behavior resides in the way in which the number of remained unsaturated sites changes during adsorption (Demirbas et al 2009;Yahaya et al 2011), especially after the fractional coverage of the sorbent surface.…”

Phenolic compounds biosorption onto Schizophyllum commune fungus: FTIR analysis, kinetics and adsorption isotherms modeling

“…The most important factor is that adsorption sites remain unsaturated during the adsorption reaction. This decrease in adsorption capacity with the increase in the adsorbent dosage is mainly attributed to the non-saturation of the adsorption sites during the adsorption process [52,53]. Adsorption is maximum with 0.4 g/0.1 L of S. commune fungus and the maximum percent removal is about 95% for phenol, about 96% for 2-CPh and about 98% for 4-CPh.…”

Characteristics of Elovich equation used for the analysis of adsorption kinetics in dye-chitosan systems

“…Many adsorption systems with metals (Pb 2+ , Cr 3+ , Cr 6+ , Cd 2+ , Cu 2+ , Se 4+ , As 5+ , K + , Pb 2+ , etc.) have been described by Elovich equation [5][6][7][8][9][10][11][12][13]. The kinetic behavior of many adsorption systems with a mildly rising tendency has also suitably been described by Elovich equation (no shown).…”