Atrazine removal from water by two polycations pre-adsorbed on montmorillonite was studied. Batch experiments demonstrated that the most suitable composite poly (4-vinylpyridine-co-styrene)-montmorillonite (PVP-co-S90%-mont.) removed 90-99% of atrazine (0.5-28 ppm) within 20-40 min at 0.367% w/w. Calculations employing Langmuir's equation could simulate and predict the kinetics and final extent...

Prechlorination is used as an initial step in water purification for public supply. One of the drawbacks of the prechlorination is the reaction between natural organic matters with chlorine forming trihalmethanes. This study aims at evaluating the performance of granular activated carbon (GAC) with sand as a dual filtering media with different depths on removal of trihalomethanes (THMs) for imp...

A three-dimensional (3D) electrochemical flow-through reactor equipped with GAC packed bed, polarized by the electric field, was evaluated for removal of persistent organic contaminants from real sewage effluent. The performance investigated 27 consecutive runs at two anodic current densities, i.e., low density (LCD) 15 m-2, and high (HCD) 100 m-2. In HCD experiments, adsorption ability saturat...

Abstract Degradation of raw water quality promoted the introduction GAC (granular activated carbon) filtration and ozonation into Korean drinking treatment facilities in 1994 order to cope with organic pollutants. This study focuses on evaluation organics reduction performance regenerated carbons using long-term operational data. Three at Busan were selected for this purpose. It was found that ...

In this study, the effectiveness of a novel system an anaerobic fluidized membrane bioreactor (AnFMBR) in treating wastewater was demonstrated and results were validated by testing duplicate systems parallel under similar operating conditions. system, outer loop performs as reactor while inner serves AnFMBR with granular activated carbon (GAC) used carrier for fouling control. The GAC fluidizat...

Several studies have reported the presence of pharmaceuticals in freshwater bodies all around world. For this investigation, removal ciprofloxacin (CIP) ranitidine (RNT), and chlorphenamine (CPM) using lignocellulose-derived granular activated carbon (GAC) was analyzed, physicochemical mechanisms were elucidated. Additionally, textural surface properties GAC evaluated, concentrations contaminan...

Background: Because of the growing population and increasing freshwater consumption, treatment reuse greywater have been widely considered. The application a new environmentally friendly method for synthetic real (RGW) is utmost importance. This study aimed to evaluate efficiency combination ozonation, biological activated carbon, ultrafiltration (O3 /BAC/UF) in removal chemical oxygen demand (...

We collected urban soil samples impacted by polycyclic aromatic hydrocarbons (PAHs) from a sorbent-based remediation field trial to address concerns about unwanted side-effects of 2% powdered (PAC) or granular (GAC) activated carbon amendment on soil microbiology and pollutant biodegradation. After three years, total microbial cell counts and respiration rates were highest in the GAC amended so...