Papers by Francesco AVEZZU'
Since 1979, a chloro-soda industrial plant located in the northeast of Italy discharged an amount... more Since 1979, a chloro-soda industrial plant located in the northeast of Italy discharged an amount of Hg comprised between a minimum of 25 and a maximum of 7.200 kg per year. A severe surface water and sediment Hg contamination resulted in the surrounding environment, reaching a contamination peak of 300 g per kg of dry sediment. Research pursued by scientists demonstrated sediment pollution in those rivers and water bodies receiving such industrial wastewaters. Pollution migrated downstream, soon reaching a large lagoon close to the Adriatic Sea. Lagoon mussels and fishes were effected, and probably also those of Adriatic Sea as well. Being the lagoon environment naturally suffering Hg presence, a special analytical technique was necessary to distinguish between anthropogenic pollution vs. natural background Hg. Such technique, called "Covelli Method", allowed to precisely identify which lagoon areas were effectively polluted by Hg of industrial origin. After 1989, a highe...
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Comprehensive Biotechnology, 2011
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The Canadian Journal of Chemical Engineering, 1986
A pilot—plant investigation of cyclonic wetted‐wall absorption towers has shown that some of the ... more A pilot—plant investigation of cyclonic wetted‐wall absorption towers has shown that some of the main factors affecting the performance have not yet been correctly accounted for. New empirical correlations for practical designs are presented.
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A conventional activated sludge bench-scale unit has been studied by microscopical analysis of th... more A conventional activated sludge bench-scale unit has been studied by microscopical analysis of the microfauna in the various stages of the treatment plant: the feed used in this study consisted in municipal settled sewage, previously spiked with a known concentration of soluble zinc. The composition and density of the protozoan and metazoan communities have been determined in relation to various environmental and operational parameters: in particular, the effects of influent zinc concentrations on COD removal and nitrification efficiencies are examined in relation to the changing community diversity
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Papers by Francesco AVEZZU'