Využití nanouhlíkových materiálů pro odstraňování organických látek z podzemních vod.

Abstract

This doctoral thesis was written under the project VaV: FR-TI1/389 – program TIP „Carbon-based nanomaterials as sorbents for heavy metal contaminated water remediation“ and focuses on possibilities of using carbon nanotubes in groundwater treatment. Recently the nanotechnologies are widely used in variety of industrial applications e.g. food processing industry, medicine, etc. In the field of groundwater treatment the zero-valent iron nanoparticles are utilized for chlorinated hydrocarbons and heavy metals pollution removal. However the carbon-based nanomaterials are yet to be applied in this field. Many studies conclude that carbon-based nanomaterials can be equally effective as commonly used sorbents. These works treats mainly the carbon nanotubes and especially under laboratory conditions. The studies lack field data as well as in situ employment of technology techniques. First and second chapter of this thesis contains current overview of utilization of the nanomaterials with special focus on multi-walled carbon nanotubes (MWCNTs) usage in water remediation. In the following practical part the applied sorbent (MWCNTs NC7000) is described and the main focus is put on the laboratory research of organic pollutants adsorption (polycyclic aromatic hydrocarbons – PAHs, hydrocarbons C10 – C40) from model solutions. The static and dynamic adsorption technique was employed on model solutions as well as three polluted groundwater samples from three different locations. The concluding part also discusses the field employment of carbon nanotubes. The results confirmed that the static and dynamic adsorption on MWCNTsNC7000 is quite an effective method for removing of organic chemicals from both the model solutions and from real groundwater samples.