Eniricerche S.p.a.

Agip Petroli

Snam S.p.a.

Enitecnologie S.p.a.

Enitechnologie S.p.a.

Raffaello Sisto

Claudio Valentini

Arnaldo Roggero

Alberto Gandini

Rodolfo Vignola

Umberto Cova

Alessandro Stopponi

Ugo Pedretti

Amalia Assogna

Pietro Cesti

Rosario Pappa

Alessandro Nardella

Otello Farias

Armando Marcotullio

Roberto Bagatin

Raffaella Monga

Alessandra De Folley D'Auris

Gino Della Penna

Marco Petrangeli Papini

Claudio Demofonti

Riccardo Tuffi

Antonella Carpentieri

Giovanni Grillo

Ricccardo Tuffi

Alessandra De Folly D'auris

Alessandra De Folly D'AURIS

A process for the treatment of water contaminated by polar and/or apolar organic compounds, and/or by heavy metal salts, and/or by oil dispersed or in emulsion, comprises sending said contaminated water to a system comprising: at least one adsorption () unit including at least one microporous or mesoporous alumina-silicate; at least one nanofiltration unit () including at least one hydrophilic nanofiltration membrane; wherein said hydrophilic nanofiltration membrane has a contact angle with water lower than or equal to 45&#xb0;, preferably ranging from 25&#xb0; to 40&#xb0;.

Process for the treatment of contaminated water by means of adsorption and nanofiltration

A process is described for the treatment of water contaminated by metals with a high oxidation degree, aliphatic compounds, aromatic compounds, halogen-aromatic compounds, chlorinated alkane and alkene compounds or mixtures thereof, which consists in circulating the contaminated water through a reactive system consisting of metallic iron and a zeolite having a silica/alumina ratio &#x3e;50, placed in succession, wherein the first element through which the water passes is iron.

Process for the treatment of contaminated water by means of a bifunctional system consisting of iron and zeolites

A process is described for the treatment of water contaminated by apolar organic compounds and/or by heavy metals, which consists in circulating the water through a system comprising at least two types of zeolites having a silica/alumina ratio &#x3e;50, placed in succession, wherein the first zeolite through which the water is passed is characterized by a high absorption capacity and structural channel dimensions ranging from 7 to 50 &#x212b;, whereas the second is characterized by a high removal capacity of molecules with a molecular diameter comparable with structural channel dimensions ranging from 5 to 7 &#x212b;.

Process for the treatment of contaminated water based on the use of apolar zeolites having different characteristics

Oil drill cuttings, containing an oil-based mud, may be treated by mixing the cuttings with an organic solvent. The oil drill cuttings are then separated from the organic solvent and extracted oil. The organic solvent is then separated from the oil, and mixed with the extracted oil drill cuttings to extract additional oil therefrom. The oil drill cuttings are again separated from the organic solvent and oil, the oil separated from the solvent, and recombined with the oil from the first extraction step. The oil base and other mud components are recycled, depending on the treatment procedure, for subsequent use in drilling.

Method for the removal and recovery of the oil component from drill cuttings

The present invention relates to a process for treatment of soils polluted by high-boiling organic substances, such as petroleum, polynuclear aromatics and chloro-organic substances, which process uses an extractant with high dissolving power for the pollutant, and which improves the soil-extractant contact thanks to the addition of a minimal amount of a hydrophilic co-solvent.

Reclamation of polluted wet soils

A hollow fiber of amorphous, hydroxy-ethylated poly-(2,6-dimethyl-p-oxyphenylene) (PPO-OH) with a glass transition temperature (Tg) of from 180.degree. to 200.degree. C. is disclosed, which is formed by a high-density, microporous layer on a macroporous backing, and having an outer diameter comprised within the range of from 450 to 550 .mu.m and an inner diameter comprised within the range of from 250 to 400 .mu.m. The process for preparing the hollow fibre and the use of said fibre in the processes of separation of gas mixtures are disclosed as well.

Hollow fibres of modified poly-(2,6-dimethyl-p-oxy-phenylene)

An amorphous modified poly(2,6-dimethyl-p-oxyphenylene) (PPO) is described with a glass transition temperature (Tg) within the range of 170.degree.-220.degree. C., of which the macromolecules contain units having trialkylsilyl groups bonded to the nucleus and/or to the methyl: ##STR1## together with units having hydroxyethyl groups bonded to the nucleus and/or to the methyl: ##STR2## This modified PPO is prepared by metalating PPO with a metalating agent and reacting the formed metalated PPO with a trialkylsilyl halide and with ehtylene oxide in succession. The use of the thus modified PPO for the preparation of flat, including asymmetric, membranes useful in gas mixture separation processes is described.

Modified poly(2,6-dimethyl-p-oxyphenylene), a process for its

A process for preparing a modified, amorphous poly-(2,6-dimethyl-p-oxyphenylene) (PPO) comprises:

Process for preparing modified poly-(2,6-dimethyl-p-oxyphenylene)

A modified poly(2,6-dimethyl-p-oxyphenylene) with a glass transition temperature in the range of 180.degree.-220.degree. C. is described in which on the average between 10 and 60% of the macromolecules carry:

Alkylene oxide modified poly(2,6-dimethyl-p-oxyphenylene)

Growing community of inventors

Rome, Italy

Raffaello Sisto