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NOVEL COMBINED METHOD FOR LANOLINE RECOVERY FROM SHEEPSKINS TANNERIES WASTEWATERS


MAIER STELIAN-SERGIU*, BUCISCANU INGRID, BADEA NICOLAE
„GH. ASACHI” TECHNICAL UNIVERSITY, BLVD. D. MANGERON 67, 700050 IAƞI, ROMANIA, *TEL. 0040 232 279 850, E-MAIL: SMAIER@CH.TUIAƞI.RO

Issue:

SCSCC6, Volume VII, No. 2

Section:

Volume VII - No. 2 (2006)

Abstract:

The paper presents a two-stage method for the fast and high-yield recovery of lanoline from spent woolen sheepskin scouring liquors. Through its characteristics, the resulting waxy matter allows a straightforward and efficient purification of lanoline. The first stage involves the selective removal of hydrophilic and medium hydrophobic nonlanoline constituents of the spent liquor, using conventional Al-pillared clays (Al-PILCs). The second stage consists in electrochemical separation of crude waxy matter in electro flotation cells operated in pulse-widthmodulated regime, at constant current density.

Keywords:

lanoline, recovery, wastewater, pillared clays, electro flotation.

Code [ID]:

CSCC6200607V02S01A0021 [0001107]

DOI:

Full paper:

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