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Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.
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Optimizing nutrients from fly ash-amended soil through microbial-assisted phytoremediation using response surface

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  • 1Civil Engineering Department, Visvesvaraya National Institute of Technology, Nagpur, 440010, India. sandeepjain.vnit@gmail.com.

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Summary
This summary is machine-generated.

This study optimized fly ash (FA) use in phytoremediation by combining microbes and treated wastewater. This approach successfully enhanced plant growth and nutrient accumulation in FA-amended soils.

Keywords:
Jatropha curcasMicrobesMorphological assessmentNitrogenPhosphorusTreated wastewater

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Area of Science:

  • Environmental Science
  • Soil Science
  • Plant Biology

Background:

  • Nutrient availability in fly ash (FA) limits its use in phytoremediation.
  • Phytoremediation requires adequate plant nutrition for effective waste management.

Purpose of the Study:

  • To investigate the integration of microbes and treated wastewater for enhanced phytoremediation in FA-amended soils.
  • To optimize nutrient accumulation and plant growth parameters using response surface methodology.

Main Methods:

  • Utilized the Box-Behnken method for experimental design in a pot study.
  • Applied Response Surface Methodology (RSM) to model and predict nutrient accumulation.
  • Investigated the effects of fly ash percentage, microbial dose, and treated wastewater irrigation.

Main Results:

  • Achieved optimal plant growth with a plastochron index of 33.40, absolute growth rate of 2.63 cm/day, leaf area of 2681.68 cm² and biomass of 24.91 g.
  • Identified an optimized combination of 14.98% FA, 4.07 mL microbial dose, and treated wastewater for irrigation.
  • Reached peak nitrogen and phosphorus accumulation of 212.4 and 8.867 mg/L, respectively.

Conclusions:

  • The integration of microbes and treated wastewater irrigation is effective for improving plant growth and nutrient availability in fly ash-amended soils.
  • RSM successfully optimized the conditions for enhanced phytoremediation using fly ash.
  • This approach offers a sustainable solution for managing fly ash waste and improving soil fertility.