Effect of anionic surfactant on mesoporous particles for removal of methylene blue

Abstract

ZnO-SiO 2 (ZSnc) nanoadsorbent was prepared by sol-gel method in the presenceof SDS as anionic surfactant (10-3 , 6 x 10-4 , and 10-4 mol/l),for removing methylene blue (MB) from wastewater. The papered nanomaterials were characterized by XRD, TEM and surface area analysis. The factors affecting adsorption were thoroughly investigated and optimized. The mechanisms and kinetics of adsorption were explored.

Study of the transport modeling by diffusion of pollutants through porous materials

“…2 is presented as follow: Generally, two major mechanisms, i.e. adsorption and diffusion, govern the transport of pollutants through the porous [19][20][21][22]. The Péclet number ( ef R ), which is a dimensionless parameter, is applied to classify the dominant process of mechanisms between adsorption and diffusion.…”

“…Competitive adsorption occurs when some species adsorb to the same adsorption sites on a surface [20][21]This often happens infiltration systems where different contaminants can compete for sites on the biomaterial or material [5][6]. Mathematical modeling can be used to resolve these problems and can aid in the design and in predicting future conditions such as distributions of species within a porous.…”