Indicates papers originating from research done at IIT Kanpur and with IIT Kanpur students/faculty as co-authors.

Published (as on 29^th Aug 2025: Scopus h-index 12.0 and citations 799)

• Sujathan, S., Gopakumar, T.G. and Singh, A. (2025) Langmuir 41(1), 140-151. Impact of manganese carbonate precipitation on uranium (VI) fate in conditions relevant to carbonate-buffered aquifers. IF 3.9; Scopus Citations 0

• Verma, A., Hariharan V.C., Biswas, B., Singh, A., and Matheshwaran, S. (2024) Biochemical and Biophysical Research Communications 739, 20^th December, 150936. Biochemical and steady-state kinetic analyses of arsenate reductases from an arsenic tolerant strain of Citrobacter youngae IITK SM2. IF 2.2; Scopus Citations 2

• Ekamparam, A.S.S., Sujathan, S., and Singh, A.(2024) ACS ES&T Engineering 4(10), 2370-2380. IF 6.7; Scopus Citations 1 Kinetics of fluorapatite precipitation in fluoride contaminated water.

• Bhattacharya M., Bandyopadhyay T., Shriwastav, A., Mohapatra A.K., and Singh A.(2023) Applied Geochemistry 158, November, 105805. IF 3.4; Scopus Citations 1 Solubility product of chromate analogue of hydrogarnet (Ca₃Al₂[CrO₄]_0.12[O₄H₄]_2.88(s)) at 25 °C.

• Ekamparam, A.S.S., Khaitan, H., Nimesh, V. and Singh, A.(2023) Chemosphere 342, November, 140161. IF withdrawn; Scopus Citations 5 Relative extents, mechanisms, and kinetics of fluoride removal from synthetic groundwater by prevalent sorbents.

• Singh, A, Tejavath, R., Bandyopadhyay, Bhojwani, V., Bhattacharya, M., Prakash, M. and Sharma, L.M. (2023) Environmental Engineering Science 40(11), 584-95. Enabling Marginalized Communities to Monitor and Treat Chromium-Polluted Groundwater with Decentralized and Affordable Technologies. IF 1.8; Scopus Citation 4

• Bandyopadhyay, Bhojwani, V., Weigand, H., Sharma, A., and Singh, A.(2023) Journal of Water Process Engineering 53, July, 103787. IF 6.7; Scopus Citations 2 Household-scale treatment units for reductive removal of hexavalent chromium from groundwater.

• Sujathan, S. and Singh, A.(2023) Environmental Science & Technology 57(5), 1970-1986. IF 11.3; Scopus Citations 7 Investigation of potential drivers of elevated uranium prevalence in Indian groundwaters with a unified speciation model.

• Singh, Srivastava, I., Mohapatra, A.K., Singh, A., Dwivedi, J., Sankararamakrishnan, N. (2023) New Journal of Chemistry 47(4), 2026-2039. Ultra-fast and robust capture of fluoride by an amino terephthalic acid-facilitated lanthanum-based organic framework: insight into performance and mechanisms. IF 2.5; Scopus Citations 9

• Mishra, Mohapatra, A.K., Mandal, A., and Singh, A.(2023) Groundwater for Sustainable Development 20, February, 100875. IF 5.6; Scopus Citations 14 Identification of potential artificial groundwater recharge sites in an alluvial setting: A coupled electrical resistivity tomography and sediment characterization study.

• Nilling, J.J., Verma, A., and Singh, A.(2022) Geochimica et Comochimica Acta 333, 308-332. IF 5.0; Scopus Citations 9 Precipitation of arsenic-bearing solids as a secondary control on arsenic speciation in groundwater: Evidence from field study and geochemical analysis.

• Verma, A., Murugan, P.A., Hariharan V.C., Singh, A, and Matheshwaran, S. (2022) Biomed Research International 2022, 6384742, 19 pages. IF 2.3; Scopus Citations 7 Identification and genome analysis of an arsenic-metabolizing strain of Citrobacter youngae IITK SM2 in middle Indo-Gangetic plain groundwater.

• Verma, A., Sharma, L.M., Pahuja, G., Nilling, J.J., Kumar, A., and Singh, A. (2021) Environmental Engineering Science 38(11), 1036-51. IF 1.8; Scopus Citations 8 Modified biosand filter for provisioning of potable water to rural households affected by chronic arsenic pollution in groundwater.

• Mohapatra A.K., Sujathan, S., Ekamparam, A.S.S., and Singh, A. (2021) ACS Earth and Space Chemistry 5(10), 2700-14. IF 2.9; Scopus Citations 20 The role of manganese carbonate precipitation in controlling fluoride and uranium mobilization in groundwater.

• Bamane, S. D., Bhojwani, V., Balkunde, P.L., Bhattacharya, M., Gupta, I., Mohapatra, A.K., Shekhar, A. and Singh A.(2021) Analytical and Bioanalytical Chemistry 413(13), 3455-69. IF 3.8; Scopus Citations 21 Smartphone-enabled field monitoring tool for rapid hexavalent chromium detection in water.

• Ekamparam A.S.S., and Singh A.(2020) Geochimica et Cosmochimica Acta 288, 16-35. IF 5.0; Scopus Citations 12 Transformation of calcite to fluorapatite at room temperature: Impact of initial phosphate and fluoride levels.

• Bhattacharya M., Shriwastav A., Bhole S., Silori, R., Mansfeldt, T., Kretzschmar R., and Singh A. (2020) ACS Earth and Space Chemistry 4(1), 35-39. Processes governing chromium contamination of groundwater and soil from a chromium waste source. IF 2.9; Scopus Citations 41

• Pokhara P.^#, Ekamparam A.S.S.^#, Gupta A.B., Rai D.C. and Singh A. (2019) Construction and Building Materials 221, 244-252. Activated alumina sludge as partial substitute for fine aggregates in brick making. IF 8.0; # indicates joint first authors; Scopus Citations 20

• Prem Anand M., Hariharan V.C., Shankar H., Singh A., and Matheshwaran S. (2019) Microbiology Resource Announcements 8(6), e01330-18 IF na; Scopus Cit 4 Genome sequence of Bacillus subtilis subsp. subtilis strain IITK SM1, isolated from kitchen waste compost.

• Choudhary B., Paul D., Singh A., and Gupta T. (2017) Environmental Science and Pollution Research 24(20), 16786-16797 IF withdrawn; Scopus Citations 130 Removal of hexavalent chromium upon interaction with biochar under acidic conditions: mechanistic insights and application.

• Matern K., Weigand H., Singh A., and Mansfeldt T. (2017) Environmental Science and Pollution Research 24(4), 3582-3592. IF withdrawn; Scopus Citations 42 Environmental status of groundwater affected by Chromite Ore Processing Residue (COPR) dumpsites during pre-monsoon and monsoon seasons.

• Singh A., Catalano J.G., Ulrich K.-U., and Giammar D.E. (2012) Environmental Science & Technology 46(12), 6594-6603. IF 11.3; Scopus Citations 104 Molecular-scale structure of uranium(VI) immobilized with goethite and phosphate.

• Singh A., Ulrich K.-U., and Giammar D. E. (2010) Geochimica et Cosmochimica Acta 74(22), 6324-6343. IF 5.0; Scopus Citations 99 Impact of phosphate on U(VI) immobilization in the presence of goethite.

• Zeng H., Singh A., Basak S., Ulrich K.-U., Sahu M., Biswas P., Catalano J.G., and Giammar D.E. (2009) Environmental Science & Technology 43(5), 1373-1378. Nanoscale size effects on uranium(VI) adsorption to hematite. IF 11.3; Scopus Cit 146

• Ulrich K.U., Singh A., Schofield E.J., Bargar J.R., Veeramani H., Sharp J., Bernier-Latmani R., and Giammar D.E. (2008) Environmental Science & Technology 42(15), 5600-5606. IF 11.3; Scopus Citations 91 Dissolution of biogenic and synthetic UO₂ under varied reducing conditions.

Refereed Conference Papers

• *Sharma, S.K. and Singh, A. (2025) Investigation of uranium (VI) uptake by rhodochrosite in a flow-through setup. https://conf.goldschmidt.info/goldschmidt/2025/meetingapp.cgi/Paper/26262, 35^th Goldschmidt Conference, 11aO6, Jul, Prague, Czech Republic Oral presentation

• *Singh, A., Sharma, S.K., Mohapatra, A.K., Sujathan, S., and Verma., A. (2024) Role of carbonate minerals in mobilization of geogenic contaminants in Indo-Gangetic Plain groundwater. Goldschmidt Abstracts, https://doi.org/10.46427/gold2024.24763, 34^th Goldschmidt Conference, Aug, Chicago, USA Keynote oral presentation

• *Sharma, S.K. and Singh, A. (2024) Mobilization mechanism(s) of geogenic uranium in a typical middle Indo-Gangetic Plain groundwater. Goldschmidt Abstracts, https://doi.org/10.46427/gold2024.21985, 34^th Goldschmidt Conference, Aug, Chicago, USA Oral (remote) presentation

• *Prakash, M. and Singh, A. (2024) Extent of fluorapatite precipitation in systems co-equilibrated with calcite and fluorite. Goldschmidt Abstracts, https://doi.org/10.46427/gold2024.21945, 34^th Goldschmidt Conference, Aug, Chicago, USA Poster (remote) presentation

• *Prakash, M., Mohapatra, A.K., and Singh, A. (2024) Fluoride removal from groundwater using low-cost materials. National Environmental Conference (NEC), paper 223, p41, Feb, IIT Bombay, Mumbai. Oral presentation

• *Upadhyay, M.K., Bhatt, M., Gemoets, J., Campling, P., Rajvanshi, K., and Singh, A. (2024) The environmental impact of wastewater reuse in an irrigation scheme. National Environmental Conference (NEC), paper 221, p72, Feb, IIT Bombay, Mumbai. Oral presentation

• *Sharma, S., Sujathan, S., and Singh, A. (2024) Extent of uranium uptake by rhodochrosite in synthetic groundwater. National Environmental Conference (NEC), paper 199, p17, Feb, IIT Bombay, Mumbai. Oral presentation

• Giammar D.E., Catalano, J.G., Satpathy A., and Singh A. (2023) Uranium at mineral-water interfaces: research with and inspired by Janet Hering. 265^th American Chemical Society (ACS) National Meeting, Fall, San Francisco, CA, USA. Invited talk in a session honoring Dr. Janet Hering

• *Mohapatra, A.K. and Singh, A. (2023) Effect of magnesium on fluoride removal from groundwater using calcium phosphate-based amendments. Goldschmidt Abstracts, https://doi.org/10.7185/gold2023.13846, 33^rd Goldschmidt Conference, July, Lyon, France Poster presentation

• *Verma, A., Matheshwaran, S., and Singh, A. (2023) Potential role of indigenous bacteria in controlling arsenic concentration in mixed‑oxic state groundwater. Goldschmidt Abstracts, https://doi.org/10.7185/gold2023.13854, 33^rd Goldschmidt Conference, July, Lyon, France Poster presentation

• *Sujathan, S., Sharma, S., and Singh, A. (2023) Investigation of uranium (VI) uptake by rhodochrosite and its effect on uranium mobility in sediments. Goldschmidt Abstracts, https://doi.org/10.7185/gold2023.14504, 33^rd Goldschmidt Conference, July, Lyon, France Oral presentation

• *Rajvanshi, K., Bhatt, M., Upadhyay, M.K., Gemoets, J., Campling, P., and Singh, A. (2022) Impact of treated wastewater agricultural reuse on groundwater quality: a case study in Kanpur, India. 7^th International Conference on Sustainable Energy and Environmental Challenges, 185, B3, Dec, IIT BHU, Varanasi, India Oral presentation

• *Bhatt, M., Rajvanshi, K., Upadhyay, M.K., Gemoets, J., Campling, P., and Singh, A. (2022) An impact assessment of agricultural soil irrigated with treated tannery wastewater. 7^th International Conference on Sustainable Energy and Environmental Challenges, 186, B8, Dec, IIT BHU, Varanasi, India. Oral presentation

• *Nilling, J., Verma, A., and Singh, A.(2022) Assessment of precipitation as arsenic immobilization technique in a typical oxidizing groundwater. National Conference on Science for Society, Environment and Sustainability (SSES), Nov, CSIR-NEIST, Jorhat, India Oral presentation

• *Verma, A., Nilling, J., Chinnasamy, H.V., Matheshwaran, S. and Singh, A.(2022) Potential role of chloride in controlling arsenic speciation under ambient conditions. National Conference on Science for Society, Environment and Sustainability (SSES), Nov, CSIR-NEIST, Jorhat, India Oral presentation

• *Mohapatra, A.K. and Singh, A. (2022) Effect of magnesium on fluorapatite precipitation in groundwater matrix. 264^th American Chemical Society (ACS) National Meeting, Aug, Chicago (Hybrid), USA. Oral (remote) presentation

• *Verma, A., Mohapatra, A.K., Matheshwaran, S. and Singh, A. (2022) Biogeochemical processes governing arsenic release in shallow mixed‑oxic state groundwater. Goldschmidt Abstracts, https://doi.org/10.46427/gold2022.12106, 32^nd Goldschmidt Conference, July, Hawaii (Hybrid), USA. Oral presentation

• *Singh, A., Bhattacharya, M., and Mohapatra, A.K. (2022) Kinetics of precipitation of barium chromate [BaCrO_4(s)] in groundwater. Goldschmidt Abstracts, https://doi.org/10.46427/gold2022.12106, 32^nd Goldschmidt Conference, July, Hawaii (Hybrid), USA Poster presentation

• *Verma, A., Mohapatra, A.K., Matheshwaran, S. and Singh, A. (2022) Biogeochemical processes governing arsenic release in shallow mixed‑oxic state groundwater. Goldschmidt Abstracts, https://doi.org/10.46427/gold2022.12801, 32^nd Goldschmidt Conference, July, Hawaii (Hybrid), USA. Oral presentation

• *Singh, A., Bhattacharya, M., Bandyopadhyay, T., Bhojwani, V. and Tejavath, R. (2022) Mitigating the impact of legacy industrial solid waste induced chromium pollution on rural habitations through research and practice. 18^th AEESP Research and Education Conference, Jun, Washington University in Saint Louis, USA. Oral presentation

• *Sujathan, S., Mohapatra, A.K., and Singh, A. (2022) Relative kinetics of uranium mobilization from contaminated sediments from middle Indo-Gangetic plain in the presence of dissolved manganese (II). 18^th AEESP Research and Education Conference, Jun, Washington University in Saint Louis, USA. Poster presentation

• *Mohapatra, A.K. and Singh, A. (2022) Fluoride removal from groundwater by fluorapatite precipitation under approximate in-situ conditions. 18^th AEESP Research and Education Conference, Jun, Washington University in Saint Louis, USA. Poster presentation

• *Verma, A., Chinnasamy, H.V., Matheshwaran, S. and Singh, A.(2022) Arsenate reduction and mobilization from inorganic arsenic source by a novel bacterial strain isolated from arsenic polluted groundwater. 18^th AEESP Research and Education Conference, Jun, Washington University in Saint Louis, USA. Poster presentation

• *Bandyopadhyay, T., Bhojwani, V., and Singh, A. (2022) A comparative study of chemical- and electro-coagulation based household-scale water treatment units for hexavalent chromium removal. 18^th AEESP Research and Education Conference, Jun, Washington University in Saint Louis, USA. Poster presentation

• *Misra, T., Mohapatra, A.K., and Singh, A. (2022) Defluoridation of contaminated groundwater using a column packed with calcium phosphate sorbents. 18^th AEESP Research and Education Conference, Jun, Washington University in Saint Louis, USA. Poster presentation

• *Misra, T., Mohapatra, A.K., and Singh, A. (2022) Fluoride remediation by hydroxyapatite coated calcite and brushite in synthetic and real contaminated groundwaters. International Conference on Environmental Science and Engineering (ICESE), IIT Bombay. Jan (Virtual). Oral presentation

• *Sujathan, S., Mohapatra, A.K., and Singh, A. (2021) Investigation of potential sources and release mechanisms of uranium in natural sediments. 262^nd American Chemical Society (ACS) National Meeting, August, Atlanta (Virtual due to COVID-19 pandemic). Oral presentation

• *Mishra, U., Mohapatra, A.K., Mondal, S.S.A., and Singh, A. (2021) Integrated study of time-lapse ERT data and bore well lithology to delineate a suitable managed aquifer recharge site at IIT Kanpur, India. 18^th Asia Oceania Geosciences Society (AOGS) Virtual Meeting, IG02-A011, Aug. Oral presentation

• *Singh, A., Ekamparam, S.S.A., and Sujathan, S. (2021) Kinetics of transformation of calcite to fluorapatite under flow conditions. Goldschmidt Abstracts, https://doi.org/10.7185/gold2021.8017, 31^st Goldschmidt Conference, July (Virtual due to COVID-19 pandemic). Oral presentation

• *Verma, A., Nilling, J.J., and Singh, A. (2021) Potential Role of a Novel Strain of Citrobacter sp. in Controlling Arsenic Speciation in Groundwater. Goldschmidt Abstracts, https://doi.org/10.7185/gold2021.3214, 31^st Goldschmidt Conference, July (Virtual due to COVID-19 pandemic). Poster presentation

• *Bandyopadhyay, T., Kumar, S., Bhattacharya, M., and Singh, A. (2021) A comparative study on stabilization of chromite ore processing residue with prevalent reductants. Goldschmidt Abstracts, https://doi.org/10.7185/gold2021.6162, 31^st Goldschmidt Conference, 12fO1, July (Virtual due to COVID-19 pandemic). Oral presentation

• *Mohapatra, A.K. and Singh, A. (2021) Impact of manganese-inhibited calcite precipitation on fluoride mobilization in groundwater. Goldschmidt Abstracts, https://doi.org/10.7185/gold2021.3316, 31^st Goldschmidt Conference, July (Virtual due to COVID-19 pandemic). Oral presentation

• *Sujathan, S. and Singh, A. (2021) Microscopic investigations of uranium uptake by rhodochrosite. Goldschmidt Abstracts, https://doi.org/10.7185/gold2021.7847, 31^st Goldschmidt Conference, July (Virtual due to COVID-19 pandemic). Oral presentation

• *Sujathan, S. and Singh, A. (2021) A unified predictive model for uranium geochemistry relevant to groundwater systems. 50^th JdA: Journees des Actinides Conference, March, Brittany (Virtual due to COVID-19 pandemic), France. Poster presentation

• *Mohapatra, A.K. and Singh, A. (2020) Effect of manganese on fluoride mobilization in high carbonated groundwater. Geological Society of America Conference, October, (Virtual due to COVID-19 pandemic), Oral presentation

• *Verma, A., Murugan, P.A., Matheshwaran, S. and Singh, A. (2020) Role of arsenic-resistant bacteria in controlling arsenic concentrations in groundwater. 260^th American Chemical Society (ACS) National Meeting, August (Virtual due to COVID-19 pandemic), USA. ENVR 140 Oral presentation

• *Nilling, J.J. and Singh, A.(2020) Relative kinetics of precipitation and adsorption of arsenic(V) in systems with dissolved iron(II). Goldschmidt Abstracts, https://doi.org/10.46427/gold2020.1934, 30^th Goldschmidt Conference, June, Hawaii (Virtual due to COVID-19 pandemic), USA. Oral presentation

• *Sujathan, S. and Singh, A. (2020) Analysis of uranium geochemistry in Indian groundwaters with a unified thermodynamic model. Goldschmidt Abstracts, https://doi.org/10.46427/gold2020.2488, 30^th Goldschmidt Conference, June, Hawaii (Virtual due to COVID-19 pandemic), USA. Oral presentation

• *Verma, A., Pahuja, G., Kumar, A., Nilling, J.J., Murugan, P.A., Matheshwaran, S. and Singh, A. (2020) Understanding the (bio)geochemistry of an arsenic-contaminated aquifer for sustainable remediation. Geoenvironment and Sustainability Conference, 1(1), 142-147, February, Delhi, India. Oral presentation

• *Nilling, J.J., Verma, A., and Singh, A. (2019) Potential solubility and sorption controls on arsenic in the presence of elevated dissolved iron. Goldschmidt Abstracts, 2019 2445, 29^th Goldschmidt Conference, August, Barcelona, Spain. Oral presentation

• *Verma, A., Nilling, J.J., and Singh, A. (2019) As(V) reduction to As(III) in the presence of chloride in ambient conditions. Goldschmidt Abstracts, 2019 662, 29^th Goldschmidt Conference, August, Barcelona, Spain. Poster presentation

• *Cornet, M., Fitoussi, C., Singh, A., and Bourdon, B. (2019) Cr isotopes as tracers for environmental contamination: a field study in the Kanpur area, India. Goldschmidt Abstracts, 2019 662, 29^th Goldschmidt Conference, August, Barcelona, Spain. Poster presentation

• *Bhattacharya, M. and Singh, A. (2019) Colloidal transport of hexavalent chromium in groundwater. 257^th American Chemical Society (ACS) National Meeting, Spring, Orlando, FL, USA. GEOC 37 Oral presentation

• *Bhattacharya, M. and Singh, A. (2019) Extent and rates of chromium (VI) leaching from weathered chromium ore processing residue (COPR)-impacted soils. 257^th American Chemical Society (ACS) National Meeting, Spring, Orlando, FL, USA, ENVR 59 Oral presentation

• *Bandyopadhyay, T. and Singh, A. (2019) Removal of hexavalent chromium from groundwater using electrocoagulation. National Environmental Conference (NEC) IIT Bombay Diamond Jubilee Year, January, Mumbai, India. p6 Oral pptn

• *Mohapatra, A.K., Sujathan, S., and Singh, A. (2019) Mechanism of fluorite dissolution due to interaction of manganese and carbonate in Indian groundwater aquifers. National Environmental Conference (NEC) IIT Bombay Diamond Jubilee Year, January, Mumbai, India. p5 Oral presentation

• *Nilling, J.J., Verma, A., and Singh, A. (2019) Geochemical analysis of arsenic contaminated groundwater of Baikunthpur (Uttar Pradesh), India. National Environmental Conference (NEC) IIT Bombay Diamond Jubilee Year, January, Mumbai, India. p3 Oral presentation

• *Sujathan, S., Mohapatra, A.K., and Singh, A. (2019) Investigation of processes governing uranium mobilization in groundwater at a site near Kanpur. National Environmental Conference (NEC) IIT Bombay Diamond Jubilee Year, January, Mumbai, India Poster presentation

• *Verma, A., Nilling, J.J., and Singh, A. (2019) Kinetics of precipitation of thermodynamically dominant arsenate solid pharmacolite. National Environmental Conference (NEC) IIT Bombay Diamond Jubilee Year, January, Mumbai, India Poster presentation

• *Ekamparam, S.S.A. and Singh, A. (2018) Phosphate-induced transformation of calcite to fluorapatite in the presence of fluoride. Goldschmidt Abstracts, 2018 633, 28^th Goldschmidt Conference, August, Boston, USA Oral presentation

• *Ekamparam, S.S.A., Khaitan, H., Nimesh, V. and Singh, A.(2017) Understanding fluoride sorption on activated alumina in synthetic water systems. 7^th International Ground Water Conference (IGWC), December, New Delhi, India Oral presentation

• *Ekamparam, S.S.A., Pokhara, P. and Singh, A. (2017) Understanding the mechanisms of fluoride mobilization in Indian groundwaters. 7^th International Ground Water Conference (IGWC), December, New Delhi, India Oral pptn

• *Bhattacharya, M., Brahmanand and Singh, A. (2017) Characterization of chromium ore processing residue (COPR) and its role in chromium contamination of groundwater. 7^th International Ground Water Conference (IGWC), December, New Delhi, India Oral presentation

• *Mohapatra, A.K., Ekamparam, S.S.A., Adla, S., and Singh, A. (2017) Mechanism of fluoride mobilization in groundwater of Bansathi, Kanpur Nagar, India. 7^th International Ground Water Conference (IGWC), December, New Delhi, India Oral presentation

• *Nilling, J.J., Verma, A., and Singh, A. (2017) Geochemical analysis of arsenic speciation in groundwater. 7^th International Ground Water Conference (IGWC), December, New Delhi, India Poster presentation

• *Singh A.(2017) Wastewater reuse for different intended applications as a means to minimize demand in water-scarce and contaminated areas. In session “Circular Economy in the Water Sector”. 9^thIndo-German Frontiers of Engineering Symposium (INDOGFOE 2017), Jaipur, India Invited Talk

• *Ekamparam, S.S.A. and Singh A.(2016) Dissolution-precipitation kinetics of fluoride-bearing minerals in groundwater. 17^th International Symposium on Solubility Phenomena and Related Equilibrium Processes (ISSP), July, Geneva, Switzerland, OC34 Oral presentation

• *Shriwastav, Bhattacharya, M. and Singh A.(2016) Determination of solubility-controlling phases in chromium ore processing residue. 17^th International Symposium on Solubility Phenomena and Related Equilibrium Processes (ISSP), July, Geneva, Switzerland Poster presentation

• *Ekamparam, S.S.A. and Singh A.(2016) Mechanisms of fluoride mobilization in Indian groundwaters. National symposium on geogenic contamination of groundwater: its impacts and mitigation strategies, Apr, New Delhi, India Poster presentation

• *Nilling J.J., Bhattacharya M. and Singh A.(2016) Speciation of arsenic in typical groundwaters of India. National symposium on geogenic contamination of groundwater: its impacts and mitigation strategies, Apr, New Delhi, India Poster presentation

• Giammar D.E., Singh A., Mehta V., Troyer L., Maillot, F., and Catalano J.G. (2015) Uranium(VI) uptake on iron oxide surfaces: the transition from adsorption to precipitation. 249^th American Chemical Society (ACS) National Meeting, Spring, Denver, CO, USA. Invited talk in honor of Dr. Donald Sparks

• Zhu, Z., Wang, Z., Zachara, J. M., Singh, A., Thomas, M., and Carson, J. P. (2012) ToF-SIMS and NanoSIMS Imaging of uranium distributions in the sediment of Hanford 300 Area. AVS 59^th International Symposium and Exhibition, Tampa, FL, USA. Oral presentation

• Zhu, Z., Wang, Z., Zachara, J. M., Singh, A. (2012) ToF-SIMS and NanoSIMS Imaging of Uranium Distributions in the Sediment of Hanford 300 Area. 22^nd International Conference on the Application of Accelerators in Research and Industry, Fort Worth , TX, USA. Oral presentation

• Singh A., Zachara J.M., McKinley J.P., Boyanov M.I., Kemner K.M., Bowden M.E., Resch C.T. (2012) Dissolution of uranyl precipitates in contaminated vadose zone sediments. Mineralogical Magazine, 76(6) Supplement 2378, 22^nd Goldschmidt Conference, Montreal, Canada. Oral presentation

• Singh A., Zachara J.M., Wang Z., Liu C., Liu J., and Moore Dean (2011) Uranium(VI) speciation and release kinetics from contaminated vadose zone sediments. 242^nd American Chemical Society (ACS) National Meeting, Fall, Denver, CO, USA. Oral presentation

• Singh A., Ulrich K.U., Catalano J.G., and Giammar D.E. (2009) Effect of phosphate on uranium(VI) immobilization in the presence of iron(III) (oxy)hydroxides. Migration Conference, 12^th International Conference on the Chemistry and Migration Behavior of Actinides and Fission Products in the Geosphere, Kennewick, WA, USA. Poster presentation

• Singh A., Ulrich K.-U., Catalano J.G., and Giammar D.E. (2009) Uranium(VI) - phosphate interactions in the presence of goethite. 4^th annual DOE-ERSP PI Meeting, Lansdowne, VA, USA. Poster presentation

• Singh A., Ulrich K.-U., Catalano J.G., and Giammar D.E. (2009) Multiscale uranium(VI) - phosphate interactions in the presence of goethite. 237^th American Chemical Society (ACS) National Meeting, Spring, Salt Lake City, UT, USA. Oral presentation

• Singh A., Ulrich K.-U., Catalano J.G., and Giammar D.E. (2009) Effect of phosphate on uranium fate and transport in soil and groundwater. AEESP Research and Education Conference, Iowa City, IA, USA. Oral presentation

• Ulrich K.-U., Schofield E., Bargar J., Sharp J., Veeramani H., Bernier-Latmani R, Singh A. and Giammar D.E. (2008) Nano-scale structure and stability of biogenic uranium(IV) oxide. Geochimica et Cosmochimica Acta, 72(12) Supplement 966, 18^th Goldschmidt Conference, Vancouver, Canada. Oral presentation

• Singh A., Ulrich K-U and Giammar D.E.(2008) Uranium(VI)-phosphate interactions at the goethite-water interface. Geochimica et Cosmochimica Acta, 72(12) Supplement 871, 18^th Goldschmidt Conference, Vancouver, Canada. Poster presentation

• Singh A., Ulrich K.-U., Catalano J.G., and Giammar D.E. (2008) Uranium(VI)-phosphate interactions at the goethite-water interface. Environmental Sciences: Water, Gordon Research Conference, Holderness, NH, USA. Poster presentation

• Ulrich K.-U., Singh A., Dixon S., Schofield E., Bargar J. and Giammar D.E. (2007) Uranium(IV) oxide surface reactivity, Geochimica et Cosmochimica Acta, 71(15) Supplement 1047, 17^th Goldschmidt Conference, Cologne, Germany. Oral presentation

• Singh A., Ulrich K.-U., and Giammar D.E. (2007) Adsorption and surface precipitation of uranyl phosphate on goethite. 233^rd American Chemical Society (ACS) National Meeting, Spring, Chicago, IL, USA. Poster presentation

List development / demonstration of technologies, products, patents, technology transfer

• Development of household-scale treatment unit for removal of hexavalent chromium, Cr(VI), from groundwater: A prototype for a household-scale low-cost filter for Cr(VI) removal from contaminated groundwater was developed in 2020 under the IMPRINT-1 grant. Both laboratory and field trials in contaminated waters have been successful and resulted in continuous monitoring of nearby areas in Kanpur, Kanpur Dehat, and Chhiwali in Fatehpur. The prototype was successful in a 3-month long field trial at a volunteering household in village Khanchandpur and Rania in Kanpur Dehat with Cr(VI)-contaminated water with ~5 mg/L. Two different treatment methods, chemical- and electro-coagulation, were used in the filter unit. These prototypes and field trial are documented in the following two journal papers: Bandyopadhyay et al. JWPE (2023) and Singh et al. EES (2023)

• Field monitoring tool for hexavalent chromium detection in groundwater: Developed in collaboration with Industry partner, Foundation for Environmental Monitoring (FFEM), in 2019 under the IMPRINT-1 grant, this smartphone-based tool can successfully measure hexavalent chromium in water. Both laboratory and field trials in contaminated waters were successful and resulted in continuous monitoring of nearby areas Khanchandpur and Rania in Kanpur Dehat and Chhiwali in Fatehpur. These prototypes are documented in the following journal papers: Bamane et al. ABC (2021) and Singh et al. EES (2023)

• Validation of a modified biosand filter for removal of arsenic from groundwater: A prototype for a household-scale low-cost filter for arsenic removal developed by NGO Sehgal Foundation was validated and successfully field trailed in Bihar by our collaborative effort. The validation of prototype and conduct of field trials are documented in the following journal paper: Verma et al. EES (2021)

• A low-cost household-scale modified biosand filter of excess fluoride from groundwater. The filter costs ~₹ 5000 and each batch treats 10 L within an hour @ ~₹11 per 100 L. This filter is up for field trials.

• Validation of decentralized drum composting of biodegradable solid waste: Successful undergraduate projects and pilot studies led to the validation and gradual implementation of this waste management solution to the entire IIT Kanpur campus between 2018-20. It also motivated the formation of a start-up at IITK. This effort is captured in this short video: https://youtu.be/a-U01NkAUx4

• Undergraduate:

• Environment and Sustainability (CE212; ongoing)

• Environmental Quality and Processes (CE214);

• Environmental Quality and Pollution Lab (CE311);

• Civil Engineering Communication Skills (CE341);

• Computational Methods in Engineering (ESO 208)

• Postgraduate:

• Physicochemical Principles and Processes (CE664);

• Surface Water Quality Modeling (CE760M);

• Solid-Water Interfacial Processes (CE767M);

• Subsurface Contaminant Fate and Transport (CE761M);

• Environmental Quality and Pollution Monitoring Techniques (CE668)

New courses introduced

• Solid-Water Interfacial Processes (modular PG) Spring 2018

• Surface Water Quality Modeling (modular PG) Spring 2016

• Subsurface Contaminant Fate and Transport (modular PG) Spring 2014

M.Tech. Thesis

M.S. Research Thesis

B.Tech. Project / Thesis

• Association of Environmental Engineering and Science Professors (AEESP) - 2021 - Present

• Geochemical Society - 2012 - Present

• American Chemical Society (ACS)- 2007 - Present

• Water Environment Federation (WEF) - 12/2005 - 02/2009

Office

FB-306,
Department of Civil Engineering
IIT Kanpur,
Kanpur 208016

Office Phone: 0512-259-7665 (O)

Email: abhas[AT]iitk.ac.in