Soil pollution with heavy metals not only reduces crop yields, but also negatively affects human and animal health. Even such a biophilic element as Zn, when excessively supplied to living organisms, has toxic effect. The introduction of sorbents into the soil makes it possible ensure binding pollutants in situ, leading decrease their mobility biological availability. In course work, efficiency...

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...

Fixed bed biofilm reactors with granular activated carbon (GAC) or glass beads as support media were used to evaluate the influence of short-term (12h) and long-term (23 days) increases of influent dissolved oxygen (DO) concentrations on biological perchlorate removal. The goal was to evaluate the extent by which chemisorption of oxygen to GAC can enhance the stability of biological perchlorate...

-The impacts of dissolved oxygen (DO) on the sorption of natural and model humic substances by granular activated carbon (GAC) were investigated. Among five substances tested, the sotptions of only two, polymaleic acid (PMA) and peat humic acid, were affected by the presence of DO. The uptake of the target compound o-cresol on virgin GAC and on GAC preloaded with PMA under oxic and anoxic condi...

Syntrophic degradation of propionate has been regarded as a limiting factor for methane formation in anaerobic digestion (AD) processes, due to its easier production but harder than other volatile fatty acids. In the present study, 20 g/L granular activated carbon (GAC) was introduced into an sequence batch reactor (AnSBR) and enhancement evaluated with another AnSBR without GAC control. Inocul...

The adsorption of Escherichia coli on different activated carbons has been studied. The activated carbon samples used have been characterized, determining their surface area, pore size distribution, elemental analysis, mineral matter analysis and pH of the point of zero charge. The adsorption capacity of these carbons increased with their hydrophobicity and macropore volume. The number of bacte...

Chlorinated hydrocarbons and aromatics are the major volatile organic compounds that contaminate the ground water and industrial waste waters. The best way to overcome this problem is to recover the dissolved compounds in water. In order to evaluate the potential ability of granular activated carbon (GAC) for recovery of volatile organic compounds from water, the equilibrium adsorption was inve...

Point-of-use filters containing granular activated carbon (GAC) are an effective method for removing certain chemicals from water, but their ability to remove bacteria and viruses has been relatively untested. Collision efficiencies (alpha) were determined using clean-bed filtration theory for two bacteria (Raoutella terrigena 33257 and Escherichia coli 25922), a bacteriophage (MS2), and latex ...