Development of biomass carrier from high-filled with microcellulose LDPE
https://doi.org/10.20914/2310-1202-2019-3-192-196
Abstract
In this paper, a composite material based on LDPE filled with 30 vol.% wood microcellulose (MC), in order to assess the possibility of its use as a biomass carrier treatment facilities.The material was obtained in industrial conditions by means of a twin-screw extruder with a leaf head, then samples of a composite biomass carrier in the form of discs with a diameter of 4 cm and a thickness of 1.5 mm were obtained from the sheet by means of a cutting press.Investigated the microstructure and morphological parameters of the composite, it was found that the porosity is about 58%, the surface roughness is 3.5 units of density about 450 kg/cubic m. the basic technological parameters of the melt of the composite by the method of capillary viscometry, the dependences of the shear stress and the melt viscosity of the test material in the velocity range processing, it was found that the composite refers to satisfactory recyclable thermoplastics. Bagley correction was performed. The thermomechanical stability of the material was investigated, the critical temperature of processing-200 °C. the operational properties of the material were Investigated: the tensile strength was 1.6 MPa, the elongation at break-12%, water absorption for 24 hours of soaking-31.2%. The dry biomass residue of activated sludge for 10 days of its immobilization on a composite biomass carrier amounted to 5.54%, which exceeds by 2.4 times the biomass growth on the traditionally used material-pure polyethylene. The material has a relative chemical resistance, does not lose its performance over a long period of operation. In particular, the loss of tensile strength after 5-fold freezing, soaking in 0.01 n solutions of sulfuric acid, acetic acid and sodium hydroxide (for 6 months), exposure to UV solar radiation (for 12 months), soaking in water (for 12 months) did not exceed 10-12%. Thus, the composite composition of LDPE: MC (70: 30 vol.% ) can be recommended for use in biological treatment plants as a highly efficient carrier material-biomass.
About the Author
M. V. Shelkunova
Voronezh State University of Engineering Technologies
Russian Federation
graduate student, industrial ecology, chemical and petrochemical production equipment department, Revolution Av., 19 Voronezh, 394036, Russia
Russian Federation
graduate student, industrial ecology, chemical and petrochemical production equipment department, Revolution Av., 19 Voronezh, 394036, Russia
References
1. Nguyen T.A., Kulkov V.N., Solopanov E.Yu. The use of synthetic materials based on polyamide fibers for intensification of biological purification of waste waters. Proceedings of the universities. Investment. Construction. Realty. 2018. vol. 8. no. 1. pp. 168–174. (in Russian).
2. Markevich R.M., Grebenshikova I.A., Rodenko A.V. Features of a biocenosis of active silt, in the free state and immobilized on the polymeric media. Proceedings of BSTU. 2013. no. 4. pp. 219–223. (in Russian).
3. Zhmur N.S. Analysis of the causes of inefficient operation of small biological treatment facilities. Water supply and Sewerage. 2010. no. 9–10. pp. 57–76. (in Russian).
4. Chernysh Y., Plyatsuk L. The carrier development for biofilms on the basis of technogenic wastes for pollutants treatment in the environmental protection technologies. Lecture Notes in Mechanical Engineering. 2019. vol. F2. pp. 422–432.
5. Bidinger S.Ch., Dzedzig B. Mutag BioChip, the ultimate MBBR carrier for biological wastewater treatment. Available at: http://www.mutag-biochip.com
6. Thomson T. Polyurethane Immobilization of Cells and Biomolecules: Medical and Environmental Applications. London: Wiley, 2018.
7. Andersson S., Nilsson M., Dalhammar G., Kuttuva Rajarao G. Assessment of carrier materials for biofilm formation and denitrification. 2008. vol. 64. pp. 201–207.
8. Cl?udia Silveira S.M., Claudia M.M., Cidr?o Guedes Fi?za L.M., T?dde Santaella S. Immobilization of microbial cells: a promising tool for treatment of toxic pollutants in industrial wastewater. Afr. J. Biotech. 2013. vol. 12. no. 28. pp. 4412–4418.
9. Dolzhenko L.A. Immobilization of activated sludge in the bioreactor media in the context of nitrification and denitrification. Education and science in the modern world. Innovations.2016. no. 4. pp. 150–157. (in Russian).
10. Studenikina L.N., Korchagin V.I., Shelkunova M.V., Dochkina Yu.N. The Modification of polyethylene with microcellulose to increase its immobilization ability. Vestnik VSU. 2018. no. 3. pp. 23–29. (in Russian).
11. Zherdev V.N., Studenikina L.N., Shelkunova M.V. Species composition of activated sludge from LOS aeration tanks. Models and technologies of nature management (regional aspect). 2016. no. 1 (2). pp. 34–39. (in Russian).
Review
For citations:
Shelkunova M.V. Development of biomass carrier from high-filled with microcellulose LDPE. Proceedings of the Voronezh State University of Engineering Technologies. 2019;81(3):192-196. (In Russ.) https://doi.org/10.20914/2310-1202-2019-3-192-196
Views:
519
Email this article 
Post a Comment 
