title: Organic-inorganic materials containing nanoparticles of zirconium hydrophosphate for baromembrane separation.
abstract: Organic-inorganic membranes were obtained by stepwise modification of poly(ethyleneterephthalate) track membrane with nanoparticles of zirconium hydrophosphate. The modifier was inserted inside pores of the polymer, a size of which is 0.33 μm. Inner active layer was formed by this manner. Evolution of morphology and functional properties of the membranes were investigated using methods of porosimetry, potentiometry and electron microscopy. The nanoparticles (4 to 10 nm) were found to form aggregates, which block pores of the polymer. Pores between the aggregates (4 to 8 nm) as well as considerable surface charge density provide significant transport numbers of counter ions (up to 0.86 for Na(+)). The materials were applied to baromembrane separation of corn distillery. It was found that precipitate is formed mainly inside the pores of the pristine membrane. In the case of the organic-inorganic material, the deposition occurs onto the outer surface and can be removed by mechanical way. Location of the active layer inside membranes protects it against damage.
authors: Department of Sorption and Membrane Materials and Processes, V.I. Vernadskii Institute of General and Inorganic Chemistry, NASU, Palladin Pr. 32/34, 03142 Kiev, Ukraine.
authors: Yuliya S
authors: YS
authors: Dzyazko
authors: Department of Sorption and Membrane Materials and Processes, V.I. Vernadskii Institute of General and Inorganic Chemistry, NASU, Palladin Pr. 32/34, 03142 Kiev, Ukraine.
authors: Ludmila M
authors: LM
authors: Rozhdestvenskaya
authors: Department of Process Equipment and Computer Technology Design, National University of Food Technologies of the Ministry of Education and Science of Ukraine, Vladimirskaya str. 48, 01601 Kiev, Ukraine.
authors: Yu G
authors: YG
authors: Zmievskii
authors: Department of Membrane Technologies, A.V. Shubnikov Institute of Crystallography, RAS, Leninskii pr. 59, Moscow, 119333 Russian Federation.
authors: Alexander I
authors: AI
authors: Vilenskii
authors: Department of Process Equipment and Computer Technology Design, National University of Food Technologies of the Ministry of Education and Science of Ukraine, Vladimirskaya str. 48, 01601 Kiev, Ukraine.
authors: Valerii G
authors: VG
authors: Myronchuk
authors: Department of Process Equipment and Computer Technology Design, National University of Food Technologies of the Ministry of Education and Science of Ukraine, Vladimirskaya str. 48, 01601 Kiev, Ukraine.
authors: Ludmila V
authors: LV
authors: Kornienko
authors: Department of Sorption and Membrane Materials and Processes, V.I. Vernadskii Institute of General and Inorganic Chemistry, NASU, Palladin Pr. 32/34, 03142 Kiev, Ukraine.
authors: Sergey V
authors: SV
authors: Vasilyuk
authors: Department of Carbon Sorbents for Medical and Ecological Application, Institute for Sorption and Problems of Endoecology, NASU, General Naumov Str. 13, 03163 Kiev, Ukraine.
authors: Nikolay N
authors: NN
authors: Tsyba
keywords: Active layer; Baromembrane separation; Nanoparticles; Organic-inorganic membranes; Zirconium hydrophosphate