Sorption of acid red 57 from aqueous solution onto sepiolite

Optimization of Nickel and Copper Ions Removal by Modified Mangrove Barks

“…From the value of ΔH°, it is obvious that physisorption takes part in adsorption process in which the adsorbate adheres to the surface only through weak intermolecular interactions. Basically, the heats of chemisorption had higher activation energy of 40-120 kJ mol -1 when compared to energy of physisorption [34]. The negative values of ΔS° indicate a decreased disorder at the solid/liquid interface during Ni(II) and Cu(II) ions adsorption.…”

Organic xenobiotics removal in constructed wetlands, with emphasis on the importance of the support matrix

“…Some of the most popular types of clay minerals (kaolinite, illite, montmorillonite, vermiculite, sepiolite, bentonite) have been tested to remove by adsorption a variety of organic pollutants such as dyes [182][183][184][185][186][187][188][189][190][191], pesticides [74,[192][193][194][195][196], PAHs [124,189,197], pharmaceuticals [74,75,157,[175][176][177], phenolic compounds [125,174,198] and other aromatics [124,174,189,198]. In the vast majority of these studies the organic substances are removed most commonly from pure water solutions in batch adsorption assays.…”

Electrical Removal Behavior of Carbon Nanotube and Carbon Nanofiber Film in CuCl2Solution: Kinetics and Thermodynamics Study

“…Physisorption and chemisorption can be classified, to a certain extent, by the magnitude of enthalpy change ΔH 0 . ΔH 0 of <40 kJ/mol are typically considered as those of physisorption bonds [34,35]. Generally, ΔG 0 for physisorption is less than that for chemisorption.…”