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Rola elektrochemii w ochronie środowiska

Grodzka E., Winkler K., Koczorowski Z.

Wiadomości Chemiczne

2006

[Z] 60, 9-10

671-702

For decades electrochemical technology has contributed successfully to environmental protection. Electroanalytical techniques have been frequently used in monitoring the changes of environment. In industry, electrochemical technologies can provide higher purity in technological processes and they can also limit a degradation of the environment in comparison to the common chemical methods. Electrochemistry has been also very useful in developing and in the production of new energy sources. A lot of attention has been paid to studies of environmentally friendly hydrogen fuel cells. The electrochemical techniques of waste degradation can be divided into two main categories: (i) techniques based on the faradaic processes of oxidation or reduction of contamination, and (ii) electrokinetic methods based on the transport of ions or charged particles in the electric field. The electrode processes result in the formation of deposits on the electrode surface or the decomposition of large organic molecules to the low molecular weight, easily biodegradable molecules or CO2. The electrokinetic techniques include electrocoagulation, electroosmosis, electrodialysis, and electroflotation. These techniques are widely used in removing contaminants from soil. This paper is focused on selected topics related to the environmentally friendly application of electrochemistry.

Modelling of solute migration and its adsorption in porous layers

Wroński S., Molga E., Rudniak L., Hubacz R.

Applied Mechanics and Engineering

1998

Vol. 3, no 4

679-694

The immobilization of pollutants by irreversible sorption in agglomerates immersed directly into the porous layer has been considered. A general model for migration and sorption of soluble contaminants in a porous layer has been formulated and the method of its solution has been proposed. The calculations have been carried out to display the model effectiveness and flexibility. The influence of the size of agglomerates, the density and geometry of their distribution on the decontamination efficiency has been studied. Also the effect of mass transfer parameters on this efficiency has been investigated.