WebNov 1, 2024 · Citrate adsorption reached a maximum between pH approximately 2.5 and 5.5 and declined as the pH was increased or decreased from that range. At high surface loading conditions, the dominant ... WebNov 22, 2013 · The adsorption process occurred through the exchanges of phosphate groups with citrate anions. The adsorption isotherm equalled the Langmuir isotherm. …
Preparation and adsorption properties of citrate-crosslinked …
WebDue to the low amount of citrate, the noisy signal does not allow a clear identification of the peaks. Notice that for free citrate molecules, the asymmetric and the symmetric COO − stretching modes are detected at 1385 cm −1 and 1575 cm −1 [27,44]. Here, the peak at 1519 cm −1 may be assigned to the COO moiety in interaction with the ... WebApr 1, 1998 · Abstract The adsorption of citrate on hydroxyapatite (HA) has been studied at 25°C, pH 6 and 8, and at 37°C, pH 8. The experimental results agree with the Langmuir adsorption model at low citrate concentrations, with similar values of the affinity coefficient K . The amount adsorbed Q decreases with the increase of pH and the rise in temperature. how to say you are professional on a resume
Kinetics of citrate-induced selenite desorption from ... - Springer
WebThe chemical adsorption is attributed to the reaction between DA and the surface citrate. The citrate molecules serve both as the capping agent of Ag NPs and the sensing agent of DA. The positively charged DA molecules can effectively anchor on the negatively charged citrate-capped Ag NP surface via electrostatic interaction. WebSep 4, 2024 · The kinetics of adsorption/desorption of oxalate, citrate and tartrate anions was investigated using hydroxyapatite from solutions at the initial concentrations of 0.000001 and 0.001 mol/dm3 anions. The adsorption process from a solution with a concentration of 0.001 mol/dm3 takes place in three stages and is well described by the … WebOct 1, 1992 · A synergistic effect of reductant and complexant is observed in the dissolution of goethite by dithionite and citrate or EDTA. The rate data are interpreted using the surface complexation approach to describe the interface of the reacting oxide. Adsorption of both S2O 4 2− (D) and complexant (L) generates three surface complexes that define the … north london memorials