Removal of warfarin and hydroxy-coumarin contaminants from effluents by formaldehyde condensn. in acidic medium

Rehner, ElenaElenaRehnerCraiu, CornelCornelCraiuNicolau, MargaretaMargaretaNicolauCilianu, S.S.Cilianu2017-04-242017-04-241990-10-30Patent no. RO 100053-Ahttp://hdl.handle.net/123456789/912Patent Assignee Name(s) and Code(s): INST EPURAREA APELOEx prodn. effluents contg. warfarin rat poison and an intermediate 4-hydroxy-coumarin are purified efficiently by condensn. of the contaminants with formaldehyde in acidic mediumen-USWastewater treatmentRemoval of warfarin and hydroxy-coumarin contaminants from effluents by formaldehyde condensn. in acidic mediumProcedeu de epurare a apelor rezidualePatent