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Start Over Author "Di Somma I" Publisher elsevier b.v.
8 results on '"Di Somma I"'

7. Energy recovery in wastewater decontamination: Simultaneous photocatalytic oxidation of an organic substrate and electricity generation

Author

Canterino, M., Di Somma, I., Marotta, R., Andreozzi, R., and Caprio, V.

Subjects
*ORGANIC compounds removal (Sewage purification), *SCIENTIFIC experimentation, *ELECTRIC power production, *SEWAGE purification processes, *PHOTOCATALYSIS, *REFUSE as fuel
Abstract

The contemporary removal of organic pollutants from aqueous solution and electricity generation is studied in the present work by means of an experimental device resulting from the combination of a photocatalytic reactor and an electrochemical cell. The proposed system relies on the capability of Cu2+ ions to reduce in the presence of TiO2, (solar) UV radiations and a sacrificial organic agent. In the anodic solution of the combined photoreactor-cell, Cu0 is oxidized to Cu2+ and the latter is reduced again to the lowest oxidation state. The use of different sacrificial agents ranging from formic acid (FA) to glycerol (GLY) to glucose (GLU) is investigated along with the adoption of two different cathodes for the cell, the first based again on the couple Cu2+/Cu0 and the second on the couple O2/H2O. [Copyright &y& Elsevier]

Published
2009
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8. Recovery of palladium (II) from aqueous solution through photocatalytic deposition in presence of ZnO under UV/Visible-light radiation

Author

Ilaria Di Somma, Roberto Andreozzi, Marica Muscetta, Raffaele Marotta, Muscetta, M., Andreozzi, R., Marotta, R., and Di Somma, I.

Subjects
Aqueous solution, Materials science, Process Chemistry and Technology, Metal ions in aqueous solution, Inorganic chemistry, chemistry.chemical_element, Kinetic model, Pollution, Metal photodeposition, Catalysis, Metal, Visible-light photocatalysis, chemistry, Visible-light photocatalysi, visual_art, Zinc oxide, Photocatalysis, visual_art.visual_art_medium, Chemical Engineering (miscellaneous), Irradiation, Waste Management and Disposal, Dissolution, Palladium
Abstract

A shortage of market supplies is nowadays recorded for precious metals such as palladium, due to a wide range of applications in which they are used. The development of efficient and inexpensive recovery methodologies of precious metals from waste materials is thus necessary and urgent. In the present study a zinc oxide based photocatalytic system under UV/Visible-light radiation was chosen for palladium (II) deposition from solutions containing it. The effect of ethanol as sacrificial agent was investigated at varying catalyst load, irradiation conditions (UV+visible/visible/dark), metal starting concentration as well as the presence of cupric and chloride ions in solution. Moreover, ZnO dissolution at pH under 6.0 was proposed for the recovery of pure metallic palladium. A network of reactions and a kinetic model were proposed.

Published
2021
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