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Biochar-Supported Phytoremediation of Dredged Sediments Contaminated by HCH Isomers and Trace Elements Using Paulownia tomentosa

Author

Listed:
  • Aigerim Mamirova

    (Department of Biotechnology, Faculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Almaty 050040, Kazakhstan)

  • Valentina Pidlisnyuk

    (Department of the Environmental Chemistry and Technology, Jan Evangelista Purkyně University, 400 96 Ústí nad Labem, Czech Republic)

  • Pavel Hrabak

    (Institute for Nanomaterials, Advanced Technologies and Innovation, Technical University of Liberec, 460 01 Liberec, Czech Republic)

  • Pavlo Shapoval

    (Department of Physical, Analytical and General Chemistry, Lviv Polytechnic National University, 79013 Lviv, Ukraine)

  • Asil Nurzhanova

    (Institute of Plant Biology and Biotechnology, Timiryazev 45, Almaty 050040, Kazakhstan)

Abstract

The remediation of dredged sediments (DS) as a major waste generation field has become an urgent environmental issue. In response to the limited strategies to restore DS, the current study aimed to investigate the suitability of Paulownia tomentosa (Thunb.) Steud as a tool for decontamination of DS, both independently and in combination with a sewage sludge-based biochar. The experimental design included unamended and biochar-supplemented DS with the application rates of 2.5, 5.0, and 10.0%, in which vegetation of P. tomentosa was monitored. The results confirmed that the incorporation of biochar enriched DS with the essential plant nutrients (P, Ca, and S), stimulated biomass yield and improved the plant’s photosynthetic performance by up to 3.36 and 80.0 times, respectively; the observed effects were correlated with the application rates. In addition, biochar enhanced the phytostabilisation of organic contaminants and shifted the primary accumulation of potentially toxic elements from the aboveground biomass to the roots. In spite of the inspiring results, further research has to concentrate on the investigation of the mechanisms of improvement the plant’s development depending on biochar’s properties and application rate and studying the biochar’s mitigation effects in the explored DS research system.

Suggested Citation

  • Aigerim Mamirova & Valentina Pidlisnyuk & Pavel Hrabak & Pavlo Shapoval & Asil Nurzhanova, 2024. "Biochar-Supported Phytoremediation of Dredged Sediments Contaminated by HCH Isomers and Trace Elements Using Paulownia tomentosa," Sustainability, MDPI, vol. 16(20), pages 1-20, October.
    • Handle: RePEc:gam:jsusta:v:16:y:2024:i:20:p:9080-:d:1502590
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    References listed on IDEAS

    as
    1. R. Vácha & J. Čechmánková & J. Skála & J. Hofman & P. Čermák & M. Sáňka & T. Váchová, 2011. "Use of dredged sediments on agricultural soils from viewpoint of potentially toxic substances," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 57(8), pages 388-395.
    2. Meryem Bortali & Mohamed Rabouli & Madiha Yessari & Abdelowahed Hajjaji, 2023. "Characterizing Harbor Dredged Sediment for Sustainable Reuse as Construction Material," Sustainability, MDPI, vol. 15(3), pages 1-26, January.
    3. Pranshoo Solanki & Bhupesh Jain & Xi Hu & Gaurav Sancheti, 2023. "A Review of Beneficial Use and Management of Dredged Material," Waste, MDPI, vol. 1(3), pages 1-26, September.
    4. Giancarlo Renella, 2021. "Recycling and Reuse of Sediments in Agriculture: Where Is the Problem?," Sustainability, MDPI, vol. 13(4), pages 1-12, February.
    Full references (including those not matched with items on IDEAS)

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