ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Physicochemical study of beet-sugar juice purification. IV. The determination of electrokinetic potential of suspended matter in muddy first carbonated juice

R. Kohn and J. Vašátko

Slovak Academy of Sciences, Bratislava

Abstract: cf. C.A. 50, 12515a. xi; Potential (I) of suspended particles in under-carbonated juice with alky. 0.130% CaO and in heavily over-carbonated juice with alky. 0.006% CaO was detd. The particles in the defecation lime cake (II) have neg. I which increases with the decreasing alky. of the juice and reaches max. -10.3 mv. in the 2nd carbonation with alky. 0.023% CaO. The heaviest particles in II (mostly CaCO₃) prepd. after several centrifugations from the 1st muddy carbonated juice have neg. I, av. -4.8 mv. Qual. measurements of I, based on the cataphoresis and electro.ovrddot.osmosis, were detd. on cryst. CaCO₃ particles, suspended in clear carbonated juice, and on CaCO₃ particles formed by carbonation with milk of lime added directly into clear carbonated juice. In both cases I was neg. In beet-sugar juice, CaCO₃ particles, formed in carbonation with lime and CO₂, have in statu nascendi pos. I, but immediately numerous org. nonsugars from the juice are adsorbed and colloidal defecation aggregates with neg. I are formed.

Full paper in Portable Document Format: 108a495.pdf (in Slovak)

Chemical Papers 10 (8) 495–508 (1956)