Gopala Krishna Darbha

Assistant Professor
Dept: Earth Sciences (DES)
E-mail: gkdarbha [at] iiserkol.ac.in
Personal homepage: Click Here

Research Interest:
 

Our work is focused on both the fundamental and as well as applied aspects of environmental science. Our main goal is to address the safety concerns of anthropogenic contaminants under varying hydrogeochemical environments and finding nano-eco-friendly solutions to combat potential contaminants in the environment. 1) To understand the fate and transport of contaminants in the subsurface environment. More specifically, to interpret the mechanisms responsible for retention of colloids/nanoparticles in the porous (soil) environment and at rock and mineral surfaces. As part of the work, we also investigate the role of colloids/nanoparticles to transport the contaminants in the riverine and soil environments. Here, the impact of factors such as flow velocity, geochemistry, surface topography, etc. on transport/deposition will be elucidated. We consider the nanoparticles such as nanopesticides, nanoplastics, nano metal oxides for the study. 2)Application of eco-friendly nanoparticles for the remediation of metal contaminants in the environment. Modified nanocomposites such as bio-char, hydroxyapatite, clay-based products are synthesized and applied for the remediation purpose. 3)Factors contributing to accumulation of contaminants (metals, dyes, persistent organic pollutants, PAHs, PCBs) in the riverbed and sediments4)Impact of pollution on groundwater hydrogeochemistry5)Finding the human exposure pathways to contaminants (metals, plastics, pesticides etc) through food, water and air.Interested candidates to work in our lab may write to my email address along with their CV.

Academic Background:

  1. M.Sc., M.Tech., Ph.D. (Environmental Nanoscience), USA (Jackson State University), 2008

Positions:

  1. Assistant Professor, IISER Kolkata ( - )
  2. Senior postdoc, Karlsruhe Institute of Technology, Germany (2011 - 2016)
  3. Postdoc, University of Gottingen, Germany (2008 - 2011)
  4. Postdoc, Lehigh University, Pennsylvania, U.S.A. (2008 - 2008)

Awards and Honors:

  1. NSSWM-2019 Excellent paper presentation award from National symposium on sustainable waste management (2019)
  2. Early Career Research Award from Science and Engineering Research Board (2017)
  3. Ramanujan Fellowship from SERB, Department of Science and Technology (2016)
  4. Best graduate student Ph.D. from Jackson State University, U.S.A. (2008)
  5. 2nd prize in graduate student presentation from 8th SSCCM Conference (2008)
  6. 2nd prize in graduate student presentation from 7th SSCCM Conference (2007)
  7. Qualified Graduate Aptitude Test in Engineering with 98.6 percentile from AICTE (2003)
  8. Sri N.Sri Ramabhadra Raju memorial prize (Gold medal) for standing top among all B.S. students from D.N.R. College, Andhra University (2000)
  9. Sri N.Bangar Raju memorial prize for standing first among all the B.S. Physics students from D.N.R. College, Andhra University (2000)
  10. Sri A.B.R.B.Kasi Viswanadha Raju memorial prize for standing first among all the B.S. Chemistry from D.N.R. College, Andhra University (2000)

Selected Publications:

  1. Tiwari, Ekta; Mondal, Mithu; Singh, Nisha; Khandelwal, Nitin; Monikh, Fazel Abdolahpur and Darbha, Gopala Krishna. 2020."Effect of irrigation water type and other environmental parameters on CeO2 nanopesticide-clay colloid interactions." Environmental Science: Processes and Impacts, 22, 84-94
  2. Gupta, Kanha; Khandelwal, Nitin and Darbha, Gopala Krishna. 2019."Removal and recovery of toxic nanosized Cerium Oxide using eco-friendly Iron Oxide Nanoparticles." Frontiers of Environmental Science and Engineering, 14, 15
  3. Monikh, Fazel Abdolahpur; Fryer, Benjamin; Lago, Daniel Arenas; Vijver, Martina G.; Darbha, Gopala Krishna; Jones, Eugenia Valasami and Peijnenburg, Willie J.G.M.. 2019."A Dose Metrics Perspective on the Association of Gold Nanomaterials with Algal Cells." Environmental Science & Technology Letters, 6, 732-738
  4. Singh, Nisha; Tiwari, Ekta; Khandelwal, Nitin and Darbha, Gopala Krishna. 2019."Understanding the stability of nanoplastics in aqueous environments: effect of ionic strength, temperature, dissolved organic matter, clay, and heavy metals (selected as cover page article)." RSC Environmental Science: Nano, 6, 2921-3174
  5. Khandelwal, Nitin Kumar; Singh, Nisha; Tiwari, Ekta and Darbha, Gopala Krishna. 2019."Novel synthesis of clay supported amorphous aluminum nanocomposite and its application in removal of hexa-valent Chromium from aqueous solutions." RSC Advances, 9, 11160

All Publications: Click Here