Techniques for the Purification of Groundwaters Polluted by Herbicides
The purification of waters derived from groundwaters polluted by herbicides can be attained in different ways. The adsorption capabilities of activated carbons can be modeled in different ways; for diluted solutions, such as groundwaters surely are, the most common mathematical approach is the well known Freundlich model, which, for a single contaminant. The possible treatment options for groundwaters polluted by pesticides can be different, but, in any case, a process unit based on adsorption on activated carbon seems to be necessary to assure drinking water of proper quality. The final structure of activated carbons is influenced by the ones of the initial stuffs and by the production processes, which affect the number, size, and distribution of pores inside the particles and therefore the adsorption capabilities. The capabilities of strong oxidants to break organic molecules in order to produce simpler and smaller ones can be of great interest for pesticide removal from waters used for drinking purposes.