Affiliation:
1. Tambov State Technical University
2. Voronezh branch of FSBEI HE REU named after G.V. Plekhanov
3. LLC Veksha
Abstract
The paper presents the results of experimental data on the kinetic characteristics of ultrafiltration tubular elements, such as the output specific flow, retention coefficient, diffusion permeability coefficient, distribution coefficient. To study the purification of milk whey, we used tubular ultrafilters BTU 05/2 with membrane material fluoroplast (F), polyethersulfone (PESF), polysulfone (PS). For theoretical calculation of the retention coefficient, output specific flux, diffusion permeability coefficient, distribution coefficient, mathematical expressions were developed and empirical coefficients were obtained. The developed mathematical expression describes the experimental data with good reliability. The obtained experimental and calculated data can be used with high reliability in calculating mass-transfer fluxes of substances through a semi-permeable membrane, as well as in engineering methods for calculating and predicting efficiency, and using membrane processes for concentrating serum. The protein concentration in real milk whey was determined by formol titration. On the basis of the studies carried out, the dependence of the growth of the output specific flow on pressure was established, that the optimal pressure for concentrating milk whey on the ultrafiltration membranes we have chosen is 0.25 MPa. For three types of ultrafilters, the experimental value of the coefficient was within 99% for protein. For the theoretical calculation of the retention coefficient, a program in the MAXIMA language was developed and registered. Due to the method of applying the membrane to the reinforcing element, the membrane material polyethersulfone (PESF) and polysulfone (PS) have a substrate, due to which they sorb more substances on themselves, because of this, the diffusion permeability coefficient and the distribution coefficient are much higher than that of a filter element with membrane made of fluoroplastic (F), which does not have a substrate.
Publisher
FSBEI HE Voronezh State University of Engineering Technologies
Subject
General Agricultural and Biological Sciences
Reference15 articles.
1. Mikhailenko I.G., Fedorenko B.N. Concentration of milk whey on flat ceramic membranes. Food ingredients and biologically active additives in food technologies and perfumery and cosmetics. 2019. pp. 142-147. (in Russian).
2. Anisimov G.S. et al. Changes in the thermophilic microflora of secondary milk raw materials in the process of electrodialysis processing. State and prospects for the development of the best available technologies for specialized food. 2019. pp. 97-101. (in Russian).
3. Kostyukov D.M. et al. Regularities of concentration of curd whey by nanofiltration. Dairy Bulletin. 2012. no. 1. (in Russian).
4. Leshchenko E.G., Kostenko K.V. Investigation of the process of recovery of dry milk whey by the method of ultrasonic cavitation and electrochemical treatment of water. Rational nutrition, food additives and biostimulants. 2016. no. 4. pp. 34–40. (in Russian).
5. Merkel A., Ashrafi A. M., E?er J. Bipolar membrane electrodialysis assisted pH correction of milk whey. Journal of Membrane Science. 2018. vol. 555. pp. 185-196.
Cited by
3 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献