Bioremediation of Wastewater of Osh City of Kyrgyzstan with Lemna minor and Azolla caroliniana

Authors

  • Bolotbek Karimov

    Institute of Natural Sciences and Agricultural Technologies, Osh State University, Osh 723500, Kyrgyzstan 
  • Zhazgul Abdyrakhmanova

    Institute of Natural Sciences and Agricultural Technologies, Osh State University, Osh 723500, Kyrgyzstan 
  • Omurbek Karymshakov

    Faculty of Medicine, Kyrgyz State University Named after I. Arabaev, Bishkek 720083, Kyrgyzstan
  • Meder Karimov

    Institute of Natural Sciences and Agricultural Technologies, Osh State University, Osh 723500, Kyrgyzstan 
  • Gulbarchin Israilova

    Institute of Technology and Nature Management, Osh Technological University, Osh 723500, Kyrgyzstan 
  • Saparbek Moombekov

    Faculty of Natural Sciences and Geography, Osh State Pedagogical University, Osh 723500, Kyrgyzstan
  • Baigeldi Zhusupov

    Institute of Technology and Nature Management, Osh Technological University, Osh 723500, Kyrgyzstan 
  • Guliza Mamatisa kyzy

    Institute of Technology and Nature Management, Osh Technological University, Osh 723500, Kyrgyzstan 

DOI:

https://doi.org/10.30564/jees.v7i7.9910
Received: 7 May 2025 | Revised: 22 May 2025 | Accepted: 27 May 2025 | Published Online: 30 June 2025

Abstract

Under conditions of increased pollution of water resources, the search for effective and environmentally safe methods of wastewater treatment becomes an urgent task. As noted by many researchers Lemna minor L. and Azolla caroliniana have great potential for biological treatment of wastewater. The present study is devoted to the biological treatment of municipal wastewater of Osh city (Kyrgyzstan) using aquatic plants Lemna minor L. and Azolla caroliniana Willd. Experiments were conducted in concrete basins of treatment facilities. The area of each pool was 1 m2, depth 30–45 cm. The temperature of nutrient media ranged from 20 to 35 ℃, pH from 6.1 to 8.7, and light intensity from 284 to 360 W/m2FAR. The results showed that the cultivation of Lemna minor resulted in the oxygenation of wastewater and, a significant reduction of pollutants and pathogens. At the same time, the use of Azolla caroliniana provided a significant improvement in the physicochemical characteristics of water - reduction of BOD₅ to 4.3 mgO₂/L, disappearance of all forms of nitrogen, as well as improvement of transparency and elimination of unpleasant odor. Thus, both plants showed high potential as biological treatment agents. The obtained data confirm the prospect of their application for a sustainable water treatment system in the conditions of southern regions of Kyrgyzstan

Keywords:

Lemna minor L.; Azolla caroliniana Willd; Cultivation; Biological Treatment; Wastewater; Osh Wastewater Treatment Plant

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How to Cite

Karimov, B., Zhazgul Abdyrakhmanova, Omurbek Karymshakov, Meder Karimov, Gulbarchin Israilova, Saparbek Moombekov, Baigeldi Zhusupov, & Guliza Mamatisa kyzy. (2025). Bioremediation of Wastewater of Osh City of Kyrgyzstan with Lemna minor and Azolla caroliniana. Journal of Environmental & Earth Sciences, 7(7), 63–72. https://doi.org/10.30564/jees.v7i7.9910

Issue

Vol. 7 , Iss. 7 (July 2025): In Progress

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Article

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Copyright © 2025 Bolotbek Karimov, Zhazgul Abdyrakhmanova, Omurbek Karymshakov, Meder Karimov, Gulbarchin Israilova, Saparbek Moombekov, Baigeldi Zhusupov, Guliza Mamatisa kyzy

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This is an open access article under the Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) License.

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