
We are a research group in the Environmental Engineering section of the Department of Civil Engineering at IIT (BHU) Varanasi. We focus on studying the fate and transport chemistry of various pollutants of concern across different environmental components. We integrate concepts like chemical analysis and reactive transport modelling to predict the mobilization of pollutants in surface water, subsurface environments, and various anthropogenic environments, including sewage and sewage sludge. We also elucidate the chemical speciation of various pollutants of interest under relevant conditions, using aqueous and surface complexation modelling. Moreover, we study the effects of various physicochemical parameters, presence of ligands and redox potential on contaminants’ fate and transport.
Our goal is to enhance understanding and prediction of environmental systems by studying the fate, speciation, and transport of pollutants in both natural and engineered environments. Our research supports science‑based solutions to protect water quality, ecosystems, and public health. We focus on combining advanced chemical analysis, solid‑phase characterization, and reactive transport modelling to explore how pollutants are mobilized and transformed in surface water, subsurface, and human-made settings such as sewage and sludge systems. Our approach involves systematically examining how physicochemical conditions, ligands, and redox dynamics influence contaminant behaviour, while developing knowledge and tools for sustainable environmental management, regulation, and decision‑making.

Assistant Professor
Civil Engineering Department, IIT (BHU)
Team Lead

Ph.D. Scholar

Ph.D. Scholar

M.Tech Student

M.Tech Student

M. Tech Student

The research group is led by Dr. Anshuman Satpathy, Assistant Professor, Civil Engineering Department, IIT (BHU). He got his PhD. in Energy, Environmental and Chemical Engineering from Washington University in St. Louis (USA). His expertise includes the geochemistry of uranium in nuclear waste repositories and other subsurface environments; interface chemistry of clay sorbents; per- and polyfluoroalkyl substances in wastewater and domestic and industrial sludges; surface complexation and dissolution-precipitation modelling; sorption techniques; and chemical extraction techniques.
Dr. Satpathy received interdisciplinary training in both Environmental Engineering and Environmental Earth Sciences during his PhD. He comes from a mining-heavy region of India, East Singhbhum district of Jharkhand, and has been concerned by the impacts of heavy metal pollution on surface water bodies and groundwater resources. He got his Bachelor of Engineering in Civil Engineering from IIEST Shibpur and M. Tech. in Environmental Engineering and Management in Civil Engineering Department at IIT Kanpur. Dr. Satpathy has mentored many PhD. and Masters students during his postdoc training in Stevens Institute of Technology in New Jersey, USA and in the University of Notre Dame in Indiana, USA. leader in scientific innovation.

Sarthak Dubey, a PhD. Scholar in the group (Civil Engineering Department, IIT BHU). He is from Jabalpur, Madhya Pradesh. He has a B.Tech in Civil Engineering and an M.Tech in Environmental Engineering. His research focuses on PFAS detection, analysis, and remediation in environmental matrices, especially wastewater and sewage sludge. His publications include an IWWA ICWSD 24 conference paper, a JETIR paper, and a RHAR 25 conference poster. His projects include a B.Tech project on an MBBR-based WWTP for an educational institution and an M.Tech project on low-cost filtration for greywater disposal directly into natural water bodies/sewerage networks. Sarthak has been providing teaching assistance (TA) in various Environmental Engineering core courses at IIT (BHU), including the UG lab course. He has mentored various UG and PG students in their respective projects. His hobbies include designing, music, singing, photography, sketching, painting, and writing.

Tushar Patel, a PhD. scholar in the group (Civil Engineering Department, IIT BHU). He is from Shahjahanpur, Uttar Pradesh. He has a B.Tech in Civil Engineering and an M.Tech in Structural Design. His research focuses on uranium contamination in groundwater, using hydrogeochemical analysis, surface complexation modelling, and low-cost remediation methods to ensure safe drinking water. He has presented at an international conference at NIT Meghalaya (August 2–4, 2025) and has completed projects during his B. Tech and M.Tech courses. Tushar has been teaching assistant (TA) in various Environmental Engineering core courses at IIT (BHU) including PG lab course. He has mentored various UG and PG students in their respective projects. His hobbies include teaching and playing chess.

Rishi Kumar is a graduated M.Tech student from Madhubani, Bihar, with a B.Tech in Civil Engineering. He is working on synthesis of organo-clay from clay found in porters workshop or farmland. Although Montmorillonite is preferred for this process, it is more expensive, so he uses porters clay, which is abundant and among the cheapest materials available. This organo-clay serves as a substitute for activated carbon to remove organic, inorganic, and non-polar organic molecules from water and soil.

Aman Kumar Yadav is an M.Tech student from Ghazipur, Uttar Pradesh, with a B.Tech in Civil Engineering. His research involves fractionation and speciation of chromium in sewage sludge and bioremediation of heavy metals. He aims to determine the environmental toxicity and biological availability of chromium fractions using UV-Vis spectrophotometry to develop sustainable recovery techniques that address public health and resource recovery. He attended the' Water Treatment, Reuse, and Resource Recovery" symposium (Dec 2025) at IIT(BHU) Varanasi and a workshop on SDGs (Feb 2026) organised by the SDG Centre at IIT (BHU). His projects include a comparative study on soil stabilization using crumb rubber and fly ash. His hobbies include speech and paper presentations, playing table tennis, and storytelling.

Ankit Sinha is an M.Tech student from Ambikapur, Chhattisgarh, with a B.Tech in Civil Engineering. His research focuses on green synthesis of magnetically recoverable iron oxide nanoparticles using bioactive plant extracts for sustainable remediation of Hexavalent Chromium [Cr(VI)] from industrial sludge. By using phytogenic capping agents, he aims to improve surface reactivity for adsorption and reduction, emphasising easy magnetic separation to prevent secondary pollution. This offers a cost-effective, circular-economy solution for detoxifying complex wastewater without hazardous chemicals. He attended a symposium on "Water Treatment, Reuse, and Resource Recovery" (Dec 11-12, 2025) at IIT(BHU) Varanasi and a workshop on SDGs (Feb 5, 2026), organised by the Virtual SDG Centre at IIT BHU. His projects include a study on concrete mix design for ultra-thin white topping. His hobbies include leadership, management, badminton, podcasts, and space science.
Our research group works at the interface of environmental geochemistry, contaminant fate and transport, and sustainable remediation technologies, with a strong emphasis on pollutants of emerging and long-standing concern. A major thrust of our work is to understand the geochemistry of uranium in groundwater, nuclear waste repositories, and other subsurface environments. Through systematic hydrogeochemical characterisation, combined with surface complexation and reactive transport modelling, we investigate the processes that control uranium occurrence, speciation, mobility, and retention, including mineral dissolution, adsorption–desorption, and complexation with carbonate and other ligands. This work focuses particularly on groundwater systems in Eastern Uttar Pradesh, where uranium contamination poses serious long-term health risks due to widespread dependence on groundwater for drinking. Insights from field observations and modelling are translated into the development of low-cost, locally available remediation strategies using natural minerals, agricultural by-products, and iron-based sorbents to ensure practical and sustainable solutions for safe drinking water.
Another key research focus is the fate & transportation, and remediation of per- and polyfluoroalkyl substances (PFAS) in wastewater, sewage sludge, and domestic and industrial waste streams. Given the extreme persistence, bioaccumulative nature, and toxicity of PFAS, our work addresses the significant challenges associated with their detection, chemical analysis, and removal from complex environmental matrices. We explore sorption mechanisms, chemical extraction techniques, and alternative sorbents to better understand PFAS partitioning between aqueous and solid phases, with the ultimate goal of improving remediation efficiency while reducing treatment costs.
The group also conducts extensive research on interfacial chemistry and sorption processes involving clay minerals and engineered sorbents. This includes synthesising low‑cost organo‑clays from abundant local clays, such as potter’s or farmland clay, as sustainable alternatives to costly materials like activated carbon. By modifying naturally occurring clays—preferably montmorillonitic in character—these organo‑clays are tailored to remove a wide range of organic, inorganic, and non‑polar organic contaminants from water and soil systems. This work integrates solid‑phase analytical techniques, sorption studies, and modelling to evaluate performance under environmentally relevant conditions.
In the area of metal pollution, the group focuses on the fractionation, speciation, and bioavailability of toxic metals such as chromium in sewage sludge and contaminated soils. Using chemical extraction procedures and UV–Vis spectrophotometry, we distinguish exchangeable, reducible, oxidisable, and residual fractions to assess environmental toxicity and potential biological uptake. This understanding supports the development of biologically driven and resource‑recovery‑oriented remediation strategies that are both economically viable and environmentally sustainable.
Complementing this work, the group explores green nanotechnology approaches, including the phytogenic synthesis of magnetically recoverable iron oxide nanoparticles for the remediation of hexavalent chromium [Cr(VI)] from industrial sludge and wastewater. Using bioactive plant extracts as reducing and capping agents, these nanoparticles are designed to enhance surface reactivity for simultaneous adsorption and reduction of Cr(VI), while enabling facile magnetic separation to prevent secondary pollution. Overall, the group’s integrated research framework combines field studies, advanced chemical analysis, modelling, and low‑cost material development to deliver science‑driven, circular‑economy‑aligned solutions to pressing environmental and public health challenges.
Risk Assessment on River Health due to emerging Contaminants [Pharmaceutical Pollutants and Per- and Polyfluoroalkyl Substances] and their remediation
Surface complexation modelling of heavy metal adsorption on (oxy)hydroxide and clay minerals
Understanding the mobilization of geogenic uranium in the subsurface in Indo-Gangetic plain
Application of Green synthesized iron oxide nano particles on heavy metal removal
Chromium speciation in sewage sludge
ANRF, Prime Minister’s Early Career Research Grant, ₹55,00,000: Understanding the Fate and Transport Mechanism of Geogenic Uranium in the Indo-Gangetic Plain (PI)
IIT (BHU) Varanasi, 2025-2027, ₹45,30,000: Risk Assessment on River Health due to emerging Contaminants [Pharmaceutical Pollutants and Per- and Polyfluoroalkyl Substances] and Approaches for their Removal (co-PI)
Indian Army, 2025-2026, ₹45,00,000: Absorption of Eco-Friendly & Green Technology in the Indian Army (co-PI)
Tetra Tech, Inc., 2023-2024, $163,594: Column testing for reactive media of permeable reactive barriers focused feasibility study for operable unit 3 (ou-3) interim remedy Lower Darby Creek area Superfund site, Delaware and Philadelphia counties, Pennsylvania (co-PI). [completed]
Memorandum of Understanding between IIT (BHU) and Mitra SK Private Limited, a company with more than 85 years of expertise in metal ore characterization and analysis of emerging contaminants in environmental matrices. (through the initiative of the team lead, Dr. Satpathy)
Journal Publications:
Conference Presentations:

Dr. Satpathy delivering his research talk at IWTRRR 25

Dr Satpathy recieving Honour from Prof. Ashok Kumar Gupta (IIT Kharagpur)

Dr Satpathy getting felicitated by Dr. Shreyansh Jain (IIT BHU) in esteemed presence of Prof. Vinod Tare (Founder: c-Ganga) and Prof. P.K. Singh (IIT BHU)

Dr. Anshuman Satpathy
Contact: asatpathy.civ@itbhu.ac.in
+917033296287
Sarthak Dubey
Contact: sarthakdubey.rs.civ24@itbhu.ac.in
+91 9039891810
Tushar Patel
Contact: tusharpatel.rs.civ24@itbhu.ac.in
+91 9236219232
Rishi Kumar
Contact: rishikumar.civ24@itbhu.ac.in
+91 9304517976
Aman Kumar Yadav
Contact: amankumaryadav.civ25@itbhu.ac.in
+91 7007083488
Ankit Sinha
Contact: ankitsinha.civ25@itbhu.ac.in
+91 7067679022
Department of Civil Engineering, IIT (Banaras Hindu University), Banaras Hindu University Campus, Varanasi, Uttar Pradesh, India
Mon | 09:00 am – 05:00 pm | |
Tue | 09:00 am – 05:00 pm | |
Wed | 09:00 am – 05:00 pm | |
Thu | 09:00 am – 05:00 pm | |
Fri | 09:00 am – 05:00 pm | |
Sat | 09:00 am – 05:00 pm | |
Sun | Closed |
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