Adsorption Behavior of Sulfamethoxazole onto an Alumina-Solution Interface

Abstract

The adsorption measurements of sulfamethoxazole (SM) onto an alumina surface have been done at room temperature with an object to study the mode of SM adsorption at the solution–alumina interface. It is found that the adsorption isotherm is of the Langmuir type, showing a uni-layer formation of the SM molecules on the alumina surface. The adsorption is pH-dependent and found to increase with increasing pH of the medium. The adsorption is quite sensitive to the presence of Cl− and SO42− ions also and shows much interesting variation with increasing concentrations of the added anions. The adsorption also decreases with increasing temperature of the adsorption medium. Various kinetic and adsorption parameters such as the adsorption coefficient, rate constants for the adsorption and desorption, and surface coverage have been evaluated with the help of a proposed kinetics scheme.

Sorption of sulphamethoxazole by the biochars derived from rice straw and alligator flag

“…Previous study suggested the interaction between unprotonated surface hydroxyls and SMX is the driving force for SMX sorption. [29] At lower pH ( < 7), there were fewer unprotonated surface hydroxyls, which was in agreement with the lower sorption of AF. Under alkaline condition ( > 7), however, the electrostatic repulsion may decrease the sorption of SMX on AF.…”

Dynamic and equilibrium studies on adsorption of Cr(VI) ions onto binary bio-polymeric beads of cross linked alginate and gelatin

“…The adsorption was carried out by the contact method as described in our other communications [18][19][20]. In brief, into a 20 ml known solution of K 2 Cr 2 O 7 (245 mg dm −3 ) were added 0.2 g of swollen bio-polymeric beads at constant pH (6.0) and ionic strength (0.001 M KNO 3 ).…”

Reply to Clinical practice patterns and cost effectiveness of human epidermal growth receptor 2 testing strategies in breast cancer patients

“…The adsorption was carried out by the contact method as described in our other communications 14–16. In brief, firstly the standard nickel sulfate stock solution was prepared by dissolving 0.448 g NiSO 4 ·6H 2 O in 1 L distilled water.…”