Effect of polyethyleneimine ion on the sorption of a reactive dye onto Leacril fabric: Electrokinetic properties and surface free energy of the system

Effect of N-cetylpyridinium chloride in adsorption of graphene oxide onto polyester

“…Table 2 gives the surface free energy components of PET and GO in the different experimental conditions. The g LW values of PET are in the range of values found for other materials, similar to that obtained for Leacril fabric [25,26]. The g LW component results from apolar interactions, mainly London dispersion.…”

Adsorption of carmoisine A from wastewater using waste materials—Bottom ash and deoiled soya

“…For a long time activated carbon was considered as an effective adsorbent but the high cost of activated carbon has stimulated interest in examining the feasibility of using cheaper waste materials as potential adsorbents. Thus materials like beech sawdust [6], silkworm pupa [7], waste apricot [8], natural zeolite [9], Leacril fabric [10], pumice powder [11], and agricultural wastes [12] have been utilized for removal of water-soluble toxic dying materials from contaminated water. Recent significant contributions have been made by Wang and co-workers by developing coal ash, fly ash, red mud, etc.…”

Electrokinetic effect and surface free energy behavior in the adsorption process of a reactive dye onto Leacril pretreated with polyethyleneimine ion

“…PEI is a hydrophilic polymer and in aqueous solutions presents protonated and/or quaternized ammonium groups that interact under electrostatic attraction with the sulfonate and sulfate end groups of the Leacril fibers and provide its surface with a positive charge, as we have already shown [7]. We also described the Leacril zeta potential with solutions of various PEI concentrations.…”

“…We also determined the effects of a polycation, polyethyleneimine (PEI), on the electrical properties of the Leacril surface [7]. Now, we have considered that Leacril pretreated with changes its zeta potential sign from a negative initial value of ca.…”