The adsorption of Basic yellow 2 (BY2), from aqueous solutions onto Granular activated carbon (GAC) and its adsorption kinetics at different concentrations, GAC masses, initial pH values and temperatures were studied. The adsorption process was followed by an on-line spectrophotometric analysis system, which consisted of UV-spectrophotometer, a designed spectrophotometric cell, peristaltic pump...

A ground water treatment process is described in whichcontaminants are adsorbed onto granulated activated car-bon (GAC) containing fixed iron oxide. Hydrogen peroxide(H2O2) is amended to the GAC suspension and reacts withthe iron, forming hydroxyl radicals (·OH). The radicals reactwith and oxidize sorbed and soluble contaminants regen-erating the carbon surface. Laborato...

The study of the influence operating parameters dynamic adsorption on fixed-bed column manganese oxoanions (MnO4-) in aqueous media granular activated carbon (GAC), prepared from shells palm nuts Gabon, was carried out. studied were particle size, concentration initial solution (C0) MnO4-, flow rate (D) and pH media. results obtained show that best capacities at saturation (Qsat) MnO4- ion CAG ...

To select the best available packing material for malodorous organic gases such as toluene and benzene, biofilter performance was compared in biofilters employed different packing materials including porous ceramic (celite), Jeju scoria (lava), a mixture of granular activated carbon (GAC) and celite (GAC/celite), and cubic polyurethane foam (PU). A toluene-degrading bacterium, Stenotrophomonas ...

OBJECTIVE To evaluate changes in the soft tissue width of the nose induced by rapid maxillary expansion (RME). Data on greater alar cartilage (GAC) and alar base (AB) widths were compared with a normative sample within the same age range. MATERIALS AND METHODS This prospective study consisted of an RME sample of 79 patients treated with an RME protocol. Mean age at the start of RME treatment ...

The interactions in the tertiary structure of a ribosomal RNA fragment in the GTPase Associating Center (GAC) have been experimentally studied, but the roles of the bound and diffuse cations in its folding pathway have not yet been fully elucidated. Melting experiments have shown that the temperature of the first of the two distinguishable transitions in the unfolding pathway of the GAC RNA can...

The present study investigated the influence of packing material characteristics on the electricity generation performance, treatment efficiency and degradation mechanism of petroleum pollutants over microbial fuel cells (MFCs) using petroleum refinery wastewater (PRW) as fuel. The granule graphite (GG) and granule-activated carbon (GAC) were used to MFCs as packing materials, respectively. GG-...

INTRODUCTION Endoscopic ultrasonography (EUS) is the gold standard technique in loco-regional staging of gastric adenocarcinoma (GAC). Nevertheless, the introduction of multidetector-row computed tomography (MDCT) allows accurate studies to be performed. OBJECTIVE To compare the diagnostic yield of EUS and MDCT in loco-regional preoperative staging of gastric adenocarcinoma. MATERIAL AND ME...

Pyrene removal by polycation-montmorillonite (MMT) composites and granulated activated carbon (GAC) in the presence of humic acid (HA) was examined. Pyrene, HA, and sorbent interactions were characterized by FTIR, fluorescence and zeta measurements, adsorption, and column filtration experiments. Pyrene binding coefficients to the macromolecules were in the order of PVPcoS (poly-4-vinylpiridine-...