Saipem S.p.a.

Tecneco S.p.a.

Universitá Degli Studi Di Genova

Aldo Bottino

Gustavo Capannelli

Alessandro Gianazza

Ivano Miracca

Paolo Casara

Giuseppe Merelli

Stelio Munari

Claudio Uliana

Fernando Vigo

Carlo Isetti

Enrico Nannei

A process for the recovery of ammonia contained in a gaseous purging stream produced in a synthesis process of urea.

Method for the recovery of ammonia from a gaseous stream in a synthesis process of urea

Asymmetric membranes for osmosis and ultrafiltration are prepared from fluorinated polymers which are dissolved in one or more solvents, cast on a plate, allowed to evaporate and precipitated with a nonsolvent. The polymeric material can variously be modified by chemical reactions, irradiations or both. By varying the chemical and physical parameters of the preparation run, a variety of membranes can be obtained which have the most varied performances and properties.

Method for the preparation of asymmetrical membranes

Growing community of inventors

Genoa, Italy

Aldo Bottino