Langmuir, Removal Efficiency. Abstract—Heavy metals are hazardous elements in aqueous solutions which threaten the living thing organisms. Steel making plant is among the industries which may generate high amounts of pollutants and can possess high values of heavy metals. In this research granular activated carbon material is used in two different types: 1) column made of separate layers of act...

The removal efficiency of 22 selected trace organic contaminants by sequential application of granular activated carbon (GAC) and simultaneous application of powdered activated carbon (PAC) with membrane bioreactor (MBR) was compared in this study. Both sequential application of GAC following MBR treatment (MBR-GAC) and simultaneous application of PAC within MBR (PAC-MBR) achieved improved remo...

Activated carbon is one of the mainstay technologies for the decolorization of raw sugar to produce refined sugar products. This paper discusses issues relevant to the application of granular activated carbon in the sugar refining industries. The topics covered include evaluating the performance of recycled adsorbents, the evolution of activated carbon properties during initial activation and r...

The identification of certain organic compounds in drinking water has led water treatment specialists to be increasingly concerned about the eventual risks of such pollutants to the health of consumers. Our experiments focused on the role of ozone and granular activated carbon in removing mutagenic compounds and precursors that become toxic after chlorination. We found that if a sufficient dose...

abstract aims: even low concentrations of phenol in industrial waste can cause many difficulties for the aquatic environment. so removal of this organic matter is an important issue. the adsorption process, is one of the most effective methods for isolation and purification of phenols. the aim of this study was to introduce wood haloxylon as a natural and new absorbent to remove phenol from aqu...

in the paper we developed a new method to determine the absolute amount of adsorption. this method relies on the excess adsorption isotherm and the density profile in the pore of one material. to compute the density profile and decrease complex calculation of obtaining the absolute amount of adsorption we introduced simplified local-density (sld) model. a few of appropriate parameters were acqu...

applying nanoporous materials is an appropriate method for improving chemical quality of the water due to high surface area, internal porous structure (porosity), high absorption capability of harmful gases and liquids, and capability of reactivating the surface. therefore, actions were carried out in order to investigate the effect of activated carbon and zeolite on reducing the total dissolve...

Determining the degree of reducing power multi-walled carbon nanotubes (MWCNTs) and granular activated (GAC) enables their effective application in various fields. In this study, we estimate (CNTs) GAC by measuring reduction compounds with different potentials. MWCNTs materials can reduce Cr(VI), Fe(III) PMo12O403−, where potentials range from +1.33 V to +0.65 V. However, no reduced forms PW12O...

BACKGROUND The primary role of granular activated carbon (GAC) in water treatment is to adsorb organic compounds that could potentially harm humans or impart tastes and odors. Several hundred water utilities in the United States and Europe use GAC for this purpose. While the GAC is in service, however, it can also accumulate metals, either by precipitation or by adsorption of metal-organic comp...