Prof. Talis Juhna

  • E-pasts:

Research interests:

  • Drinking water treatment
  • Removal of natural organic matter
  • Iron and manganese removal from groundwater
  • Bacterial growth in water distribution networks
  • Rapid methods for identification of pathogens in drinking water

Major publications:

  1. Comparison of phosphorus removal efficiency of conventional activated sludge system and sequencing batch reactors in a wastewater treatment plant, Denisova, V., Tihomirova, K., Neilands, J., (…), Mezule, L., Juhna, T., 2020, Agronomy Research, 18(Special Issue 1), pp. 771-780
  2. Separation of reducing sugars from lignocellulosic hydrolysate: Membrane experiments & system dynamic modelling, Weerasuriya Arachchige, A.R.P.P., Mezule, L., Juhna, T., 2020, Agronomy Research, 18(Special Issue 1), pp. 1099-1106
  3. Isolation of fungal strains from municipal wastewater for the removal of pharmaceutical substances, Open Access, Dalecka, B., Oskarsson, C., Juhna, T., Rajarao, G.K., 2020, Water (Switzerland), 12(2),524
  4. Constructive use of filamentous fungi to remove pharmaceutical substances from wastewater, Dalecka, B., Juhna, T., Rajarao, G.K., 2020, Journal of Water Process Engineering, 33,100992
  5. Using the time varying Kalman filter for prediction of Covid-19 cases in Latvia and Greece, Open Access, Assimakis, N., Ktena, A., Manasis, C., (…), Zabasta, A., Juhna, T., 2020, 2020 IEEE 61st Annual International Scientific Conference on Power and Electrical Engineering of Riga Technical University, RTUCON 2020 – Proceedings, 9316598
  6. Removal of total phosphorus, ammonia nitrogen and organic carbon from non-sterile municipal wastewater with Trametes versicolor and Aspergillus luchuensis, Open Access, Dalecka, B., Strods, M., Juhna, T., Rajarao, G.K., 2020, Microbiological Research, 241,126586
  7. Microalgae starvation for enhanced phosphorus uptake from municipal wastewater, Lavrinovičs, A., Mežule, L., Juhna, T., 2020, Algal Research
  8. Short-term effect of shock ammonium nitrogen load on activated sludge properties, Golovko, K., Tihomirova, K., Neilands, R., (…), Mezule, L., Juhna, T., 2019, Water Science and Technology, 80(11), pp. 2191-2199
  9. Aguedal, H., Iddou, A., Aziz, A., (…), Ločs, J., Juhna, T., Effect of thermal regeneration of diatomite adsorbent on its efficacy for removal of dye from water, International Journal of Environmental Science and Technology 16(1), pp. 113-124, 2019
  10. Menad, K., Feddag, A., Juhna, T., Copper(II)–Humic Acid Adsorption Process Using Microporous-Zeolite Na-X, Journal of Inorganic and Organometallic Polymers and Materials 29(1), 2019
  11. Hammes, F., Velten, S., Egli, T., Juhna, T., Biotreatment of drinking water ( Book Chapter), Comprehensive Biotechnology pp. 463-476, 2019
  12. Tihomirova, K., Denisova, V., Golovko, K., (…), Mezule, L., Juhna, T., Management of wastewater from landfill of inorganic fiberglass,  Agronomy Research 17, pp. 1216-1226, 2019
  13. Šutka, A., Vanags, M., Joost, U., Smits, K., Ruža, J., Ločs, J., Kleperis, J., Juhna, T. e-resurss Nosaukums Aqueous Synthesis of Z-Scheme Photocatalyst Powders and Thin-Film Photoanodes from Earth Abundant Elements. Journal of Environmental Chemical Engineering, 2018, Vol.6, Iss.2, 2606.-2615.lpp. ISSN 2213-3437. Pieejams: doi:10.1016/j.jece.2018.04.003
  14. Dejus, S., Neščerecka, A., Kurcalts, G., Juhna, T. Detection of Drinking Water Contamination Event with Mahalanobis Distance Method, Using On-line Monitoring Sensors and Manual Measurements Data. Water Science and Technology: Water Supply, 2018, Vol.18, No.6, 2133.-2141.lpp. ISSN 1606-9749. Pieejams: doi:10.2166/ws.2018.039
  15. Neščerecka, A., Juhna, T., Hammes, F. Identifying the Underlying Causes of Biological Instability in a Full-Scale Drinking Water Supply System. Water Research, 2018, Vol.135, 11.-21.lpp. ISSN 0043-1354. Pieejams: doi:10.1016/j.watres.2018.02.006
  16. Lavrinovičs, A., Juhna, T. Use of Artificial Aquatic Food-Web for Post-Treatment of Domestic Wastewater in Cold Climate: A Review. Journal of Water Security, 2017, Vol.3, 1.-7.lpp. e-ISSN 2345-0363. Pieejams: doi:10.15544/jws.2017.009
  17. Dejus, S., Neščerecka, A., Juhna, T. On-line Drinking Water Contamination Event Detection Methods. No: Environment. Technology. Resources: Proceedings of the 11th International Scientific and Practical Conference. Vol.1, Latvija, Rezekne, 15.-17. jūnijs, 2017. Rezekne: Rezekne Academy of Technologies, 2017, 77.-81.lpp. ISSN 1691-5402. Pieejams: doi:10.17770/etr2017vol1.2627
  18. Frolova, M., Tihomirova, K., Mežule, L., Rubulis, J., Gruškeviča, K., Juhna, T. Evaluation of Pre-Treatment Technologies for Phosphorous Removal from Drinking Water to Mitigate Membrane Biofouling. IOP Conference Series: Materials Science and Engineering, 2017, Vol.251, 1.-8.lpp. ISSN 1757-8981. e-ISSN 1757-899X. Pieejams: doi:10.1088/1757-899X/251/1/012127
  19. Frolova, M., Zemītis, J., Tihomirova, K., Mežule, L., Rubulis, J., Gruškeviča, K., Juhna, T. Approbation of Microbially Available Phosphorus (MAP) Determination Method by Flow Cytometry. No: Environment. Technology. Resources: Proceedings of the 11th International Scientific and Practical Conference. Vol.1, Latvija, Rēzekne, 15.-17. jūnijs, 2017. Rēzekne: Rezekne Academy of Technologies, 2017, 89.-92.lpp. ISSN 1691-5402. Pieejams: doi:10.17770/etr2017vol1.2533
  20. Lavrinovičs, A., Juhna, T. A Review on Challenges and Limitations for Algae-Based Wastewater Treatment. Construction Science, 2017, 21, 17.-25.lpp. ISSN 1407-7329. e-ISSN 2255-8551. Pieejams: doi:10.2478/cons-2017-0003
  21. Deņisova, V., Mežule, L., Juhna, T., Ozoliņš, J. Electrochemical Drinking Water Disinfection with Tio2-X Ceramic Electrodes at Flow Conditions. Key Engineering Materials, 2017, Vol.721, 133.-137.lpp. ISSN 1013-9826. e-ISSN 1662-9795. Pieejams: doi:10.4028/
  22. Dejus, S., Rusenieks, R., Nescerecka, A., Nazarovs, S., Juhna, T., Long Term Drinking Water Quality Monitoring in Drinking Water Supply Systems by On-Line Sensors, Book of Abstracts, 8th Eastern European Young Water Professionals Conference, Gdansk, Poland, 2016, p.73-74, ISBN 978-83-7493-936-2.
  23. Mezule L., Juhna T., 2016. Efficient, environmentally friendly techniques for lignocellulosic biomass pre-treatment/hydrolysis to produce liquid biofuels, Journal of Biotechnology, 231, S33.
  24. Mezule L., Juhna T., 2016. Effect of labile organic carbon on growth of indigenous Escherichia coli in drinking water biofilm, Chemical Engineering Transactions, 49, 619-624.
  25. Nescerecka, A., Hammes, F., Juhna, T., 2016. A pipeline for developing and testing staining protocols for flow cytometry, demonstrated with SYBR Green I and propidium iodide viability staining. J. Microbiol. Methods 131, 172–180. doi:10.1016/j.mimet.2016.10.022.
  26. Nescerecka, A., Juhna, T., Hammes, F., 2016. Behavior and stability of adenosine triphosphate (ATP) during chlorine disinfection. Water Res. 101, 490–497. doi:10.1016/j.watres.2016.05.087.
  27. Gruškeviča, K., Būmanis, Ģ., Tihomirova, K., Bajāre, D., Juhna, T. Alkaline Activated Material as the Adsorbent for Uptake of High Concentration of Zinc from Wastewater. Key Engineering Materials, 2016, Vol.721, pp.123-127. ISSN 1662-9795. doi:10.4028/
  28. Tihomirova, K., Gruškeviča, K., Mežule, L., Juhna, T. Application of Organic Matter Fractionation Technique for Evaluation of Coagulation-Biofiltration Process at a Full Scale WTP. International Journal of Environmental Engineering – IJEE, 2016, Vol.3, Iss.1, pp.6-8. ISSN 2374-1724.
  29. Denisova, V., Mezule, L., Juhna, T., Ozolins, J. 2016. Electrochemical Drinking Water Disinfection with TiO2 Ceramic Electrodes at Flow Conditions. Key Engineering Materials, 721, pp. 133-137.
  30. L. Mezule, B. Dalecka, T. Juhna (2015). Fermentable sugar production from lignocellulosic waste. Chemical Engineering Transactions, 43, 619-624. Publication
  31. K. Rugele, G. Bumanis, L. Mezule, T. Juhna and D. Bajare.(2015)  Application of industrial wastes in renewable energy production. Agronomy Research Vol.13(2)Publication
  32. Gosselin, F., Madeira, L.M., Juhna, T., Block, J.C. Drinking water and biofilm disinfection by fenton-like reaction (2013) Water Research, 47 (15), pp. 5631-5638.
  33. Grube, M., Gavare, M., Nescerecka, A., Tihomirova, K., Mezule, L., Juhna, T. FT-IR spectroscopic analysis for studying Clostridium cell response to conversion of enzymatically hydrolyzed hay (2013) Journal of Molecular Structure, 1044, pp. 201-205.
  34. Tihomirova, K., Briedis, A., Rubulis, J., Juhna, T. Effect of biomass adaptation to biodegradation of dissolved organic carbon in water (2012) Biodegradation, 23 (2), pp. 319-324.
  35. Nazarovs, S., Dejus, S., Juhna, T. Modelling water quality in drinking water distribution networks from real-time direction data (2012) Drinking Water Engineering and Science, 5 (1), pp. 39-45.
  36. Tihomirova, K., Briedis, A., Rubulis, J., Juhna, T. Effect of biostimulation on biodegradation of dissolved organic carbon in biological filters (2012) Drinking Water Engineering and Science, 5 (1), pp. 23-29.
  37. Tihomirova, K., Rubulis, J., Juhna, T. Changes of NOM fractions during conventional drinking water treatment process in Riga, Latvia (2010) Water Science and Technology: Water Supply, 10 (2), pp. 157-163.
  38. Mezule, L., Tsyfansky, S., Yakushevich, V., Juhna, T. A simple technique for water disinfection with hydrodynamic cavitation: Effect on survival of Escherichia coli (2009) Desalination, 248 (1-3), pp. 152-159.
  39. Juhna T., Birzniece D., Rubulis J. (2007) Effect of phosphorus on survival of Escherichia coli in drinking water biofilm. Appl. Envirnment. Microb. 73,11, 3755-3758.
  40. Juhna T, Birzniece D, Larsson S, Zulenkovs D, Sharipo A, Azevedo NF, Menard-Szczebara F, Castagnet S, Feliers C, Keevil CW (2007) Detection of Escherichia coli in biofilms from pipe samples and coupons in drinking water distribution networks. Appl Environ Microbiol. 73(22):7456-64
  41. Rubulis, J., Juhna, T. Evaluating the potential of biofilm control in water supply systems by removal of phosphorus from drinking water (2007) Water Science and Technology, 55 (8-9), pp. 211-217.
  42. Rubulis, J., Lukyanetsa, I., Tihomirova, K., Juhna, T., Nazarovs, S., Kolyshkin, A., Vital, M., Hammes, F. Simulation of bacterial regrowth in water networks by modelling of Pseudomonas fluorescens growth in a batch and lab biofilm reactor (2007) Proceedings of the Combined International Conference of Computing and Control for the Water Industry, CCWI2007 and Sustainable Urban Water Management, SUWM2007, pp. 229-236.
  43. Wilks, S. A., Azevedo, N., Juhna T., Lehtola, M. J., and C. W. Keevil. (2006). “Tools for the rapid detection of pathogens in mains drinking water supplies”.
  44. Juhna T un Rubulis. J. (2004) Problems of DOC removal during biological treatment of surface water with a high amount of humic substances Journ. Water Sci. Technol.: Wat. Supply 4,4, 184-187(SCI)
  45. Juhna, T., M. Kļaviņš un L. Eglīte (2003). Sorption of humic substances on aquifer material at artificial recharge of groundwater, Chemosphere, 51, 9, 861-868.
  46. Juhna, T., B. Gulbe un M. Kļaviņš (2002) Speciation of iron in groundwater from areas of humic waters by an ion-exchange method. Vatten, 51, 3, 159-168.
  47. Juhna T. un M. Kļaviņš (2001). Water-quality changes in Latvia and Riga 1980-2000: Possibilities and Problems. Journ. Human Environ. AMBIO 30, 4-5, 306-314