Nicolau, MargaretaMargaretaNicolauStan, D. E.D. E.StanCraiu, CornelCornelCraiuCurcaneanu, NicolaeNicolaeCurcaneanuGeorgescu, F.F.GeorgescuCurcaneanu, S.S.Curcaneanu2017-05-082017-05-081988-11-10Patent no. RO 95985­Ahttp://hdl.handle.net/123456789/1001Patent Assignee Name(s) and Code(s): COMB CHIMIC RIMNICU; INST EPURAREA APELOR REZPurification of residual waters, contg. aromatic amine takes place in a single ­stage extraction process at pH 6-­13, at ambient temp. at pH 6-­13 with an extracting agent water ratio of 1 :5-­1 :30. The extractant is a residual cpd.obtd. during the distillation of oxo alcohols which following extraction, possess improved qualities, as additive, for the prepn. of micro-emulsions in petroleum extraction, increasing the degree of final recovery.en-USWastewater treatmentAromatic aminesPatent