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.
Cuvinte cheie
lanoline
recovery
wastewater
pillared clays
electro flotation