Water quality and pesticide contamination in agricultural streams: assessing white-rot fungi and biochar treatments as remediation strategies

  • 0Norwegian Institute for Nature Research (NINA), Oslo, Norway.

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Summary

This summary is machine-generated.

Biochar effectively removed 94% of pesticides from agricultural streams, while white-rot fungi (WRF) treatments were less efficient. Both methods impacted water nutrient levels, highlighting the need for careful application in freshwater ecosystem restoration.

Area Of Science

  • Environmental Science
  • Ecotoxicology
  • Bioremediation

Background

  • Agricultural runoff pollutes freshwater ecosystems with pesticides.
  • Conventional pesticide removal methods are often inefficient and costly.
  • White-rot fungi (WRF) and biochar offer sustainable alternatives for pesticide remediation.

Purpose Of The Study

  • To assess water quality and pesticide contamination in Norwegian agricultural streams.
  • To evaluate the efficacy of WRF and biochar in removing pesticides from surface waters.
  • To compare the cost-effectiveness and environmental impact of these bioremediation techniques.

Main Methods

  • Water samples from five agricultural streams were analyzed for 35 pesticides.
  • Laboratory treatments included WRF (spent mushroom substrate and pellets) and biochar.
  • Pesticide removal efficiency and changes in water quality parameters (nutrients, organic carbon) were measured.

Main Results

  • 35 pesticides were detected, with trifloxystrobin acid being the most frequent.
  • Biochar achieved an average pesticide removal efficiency of 94%.
  • WRF treatments showed lower efficiencies (20-27%), and all treatments increased total phosphorus levels.

Conclusions

  • Biochar is a highly effective agent for removing pesticides from contaminated surface waters.
  • WRF treatments are less efficient and may increase eutrophication risks due to elevated nutrient levels.
  • Further research is needed to optimize bioremediation strategies for sustainable freshwater management.

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