I am working as Professor and Head, Research Centre at Mahavir Cancer Institute and Research Centre since 1st July, 2016.I am also working as Chairman of Bihar State Pollution Control Board since 10th January,2018.I superannuated as Professor-in-Charge of Department of Environment and Water Management and Head, Post Graduate Department of Botany, A.N. College, Patna, India on 30th June after 44 years of active service. I am one of adviser of East Zone Water partnership, an affiliate of Global Water Partnership (GWP). Currently I am working on a DST supported research project on bioremediation of arsenic sludge, and also a multinational research project for arsenic mobilization in Gangetic floodplains of Bihar supported by NWO Wotro – The funding agency of The Netherlands Government. I have published more than 50 research papers and presented my research findings in International Seminars/conferences in India and abroad (USA, UK, Australia, Ireland, Bangladesh, Spain, Germany, Turkey, The Netherlands, South Korea and Sweden). I have also authored five book chapters published by International publishers. I am one of the coordinators of European Commission sponsored project “Erasmus Mundus Eurindia and India4EU II Program” - a worldwide cooperation and mobility that aims to enhance quality in higher education and promote intercultural understanding. I have been awarded Erasmus Mundus Fellowship in 2010,2014 and 2015 for collaborative research with University of Applied Sciences, Karlsruhe, Germany and Royal Institute of Technology, Sweden. I have worked as Chairman of SEAC, Bihar (State Environmental Impact Assessment Authority) by Government of India ifrom 2014 to 2017.I was selected as one of IIE (Institute of International Education) Scholar to study Community Colleges of USA in 2014.I was also a member of Bihar State Pollution Control Board from 2013 to 2017.I received award for Excellence in Water Showcase Final at 7th World Water Forum in 2015 held at Daegu, South Korea for my research related to arsenic mitigation in rural Bihar.