Enitecnologie S.p.a.

Snamprogetti

Enitechnologie S.p.a.

Francesco Crescenzi

Eugenio Fascetti

Andrea Robertiello

Roberto Gianna

Alessandro Nardella

Filippo Porcelli

Giulio Prosperi

Leonardo Zan

Umberto Barberini

Pasquale Sacceddu

Cesare Achille Piatti

Marcello Camilli

Antonella Crisari

Mario Galileo Valdiserri

Roberto Riva

Edoardo D'angeli

Ernesto Scafe

A storage tank that stores sulphur with zero emissions uses reinforced EPS panels and an impermeable bottom. The reinforced EPS panels are reinforced with networks of horizontal and/or vertical galvanized or stainless steel wires that are interconnected by galvanized or stainless steel orthogonal wires. Both inner and outer walls of the reinforced EPS panels are plastered before sulphur is placed in the storage tank. Larger storage tanks may be assembled by vertically interconnecting one or more reinforced EPS panels. This interconnection is achieved by corrugating the reinforced EPS panels, or forming their edges in a Greek-key shape. The Greek-key shape prevents sulphur from escaping the storage tank.

Process for the zero emission storage of sulphur

The invention relates to a method for inhibiting the biological acidification of water which is in contact with materials containing sulfur in reduced form or with elemental sulfur, susceptible to oxidation on the part of, comprising putting said materials in contact with soluble inorganic salts at concentrations ranging from 0.4 normal to saturation.

Method for inhibiting the biological acidification of water in contact with materials containing sulfur

The present application relates to a process for removing hydrogen sulfide HS from a gas () by contacting said gas with a liquid solution () containing ferric sulfate in an absorption column (RC). Ferric sulfate and HS react at room temperature and at a pressure ranging from 1 to 1.2 atm. Ferric ions being reduced to two-valent iron and sulfide oxidised to elemental sulfur. The liquid () coming out of the absorption column is filtered in two steps, the retentate () comprising elemental sulfur, the filtrate () containing the iron ions. The filtrate is sent to a bioreactor (RB) for regeneration, i.e. oxidation of iron to Feby means ofand air injection (). The regenerated solution is reused in the absorption column (RC). The process faces the problems relating to the alignment between the chemical step and the biological step in order to obtain a process which can stably run continuously.

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The invention relates to a new lipopolysaccaride biosurfactant, a strain of Acinetobacter calcoaceticus which produces this biosurfactant, and a process for its preparation. The biosurfactant has a high emulsifying capacity, it promotes the biodegradation of hydrocarbons in water and favors the adhesion of microorganisms to the water/oil interface.

Lipopolysaccharide biosurfactant

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Rome, Italy

Francesco Crescenzi