Abstract Adsorption of perfluoroalkyl acids (PFAAs) by granular activated carbon (GAC) was evaluated in bench‐, pilot‐, and full‐scale studies to determine effects PFAA characteristics background organic matter on use rates. Rapid small‐scale column tests (RSSCTs) were conducted according the proportional diffusivity (PD) design assess their suitability predict full‐ or pilot‐scale GAC performa...

The adsorption of the fungicide Carbendazim (CBZ) on granular activated carbon (GAC) coconut shell was investigated through batch tests in deionized water. most favorable conditions for CBZ were examined variation mass GAC, temperature, and contact time. Response Surface Methodology (RSM) applied, seeking best condition to optimize future tests. A thermodynamic analysis carried out using Van't ...

Adsorption by granular activated carbon (GAC) has been widely employed to remove various synthetic organic contaminants (SOCs) from water supplies [1]. A factor complicating the design and effectiveness of activated carbon for the treatment of potable waters is the presence of naturally occurring dissolved organic matter (NOM) in natural waters. The presence of NOM can significantly reduce the ...

The objective of this research was to determine the effectiveness of using pecan and almond shell-based granular activated carbons (GACs) in the adsorption of volatile organic compounds (VOCs) of health concern and known toxic compounds (such as bromo-dichloromethane, benzene, carbon tetrachloride, 1,1,1-trichloromethane, chloroform, and 1,1-dichloromethane) compared to the adsorption efficienc...

the activated sludge process is the most used biological wastewater treatment method in the world. sludge bulking is one of the most common problems relateing to activated sludge wastewater treatment, and this fact causes poor settling in secondary sedimentation tank. sludge volume index(svi) and the zone settling velocity(zsv) are parameters to quantify the settleability of activated sludge . ...

Paracetamol adsorption in acidic, neutral and basic media on three activated carbons with different chemistry surfaces was studied. A granular activated carbon (GAC) was prepared from coconut shell; starting from this sample, an oxidized activated carbon (GACo) was obtained by treating the GAC with a boiling solution of 6 M nitric acid, so to generate a greater number of oxygenated surface grou...

in this research, the batch removal of toxic hexavalent chromium ions from wastewater and aqueous solution using dried (bd) sargassum sp. (brown marine algae) and activated carbon (ac) prepared from it was examined. biomass, ph and the initial concentration of cr(vi), adsorption models and kinetic studies were investigated. the experiment was performed in a batch system and theeffect of solutio...

background and objectives: activated carbon is an adsorbent which is mostly employed in order to remove dye from aqueous solutions; however, commercial activated carbon is expensive and this is considered as an obstacle for its usage. therefore, the present study aimed to use waste paper as an inexpensive precursor to produce activated carbon. materials and methods: in the present study, koh wa...