To find the human exposure pathways of pollutants and implementing eco-friendly, low-cost technologies to benefit the society through the remediation of pollutants
Specific research interests of the group
  • Qualitative and quantitative estimation of macro and micro plastics in the marine environment(delta regions, marine waters, beaches), surface waters (rivers, lakes and ponds), soils and air

  • Understanding the fate of toxic nanoparticles as function of prevailing hydrogeochemistry of the riverine environment (nanoparticles: nanoplastics, nanopesticides, metal oxides, etc)
    • Stability, aggregation kinetics
    • Deposition / re-entrainment
    • Transport
    • Degradation

  • Factors contributing to accumulation of contaminants (metals, dyes, persistent organic pollutants, PAHs, PCBs) in the riverbed and sediments

  • Impact of  pollution on groundwater hydrogeochemistry 

  • Finding the human exposure pathways to contaminants (metals, plastics, pesticides etc) through food, water and air

  • Synthesis, characterization and applications of eco-friendly nanocomposites for environmental applications​
    • Removal of metals, metal nanoparticles, pesticides, dyes from wastewater
    • Remediation of metals in soils
    • Reduction of metal accumulation in plants grown in contaminated soils
    • Real-time detection of contaminants (pesticides, plastics, metals) in the environment using portable sensors

Dr. Gopala Krishna Darbha

Department of Earth Sciences

Associated faculty of Centre for Climate and Environmental Studies

IISER Kolkata



Jan 2020

Mr. Nitin Khandelwal received the competitive fellowship of Water Advanced Research and Innovation (WARI) to travel to the University of Nebraska, USA for a period of four months.

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