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Dr. Ebenezer D.O. Ansa

Dr. Ebenezer David Okwaning Ansa is the Director of CSIR-Animal Research Institute. He is a Principal Research Scientist and holds a PhD in Environmental Biotechnology from UNESCO-IHE Institute for Water Education and Wageningen University, The Netherlands. His expertise includes the recycling of wastewater using ecologically friendly technologies. He also holds a Master of Public Administration (MPA) from the Ghana Institute of Management and Public Administration (GIMPA), Ghana and a Master of Philosophy (M. Phil) degree in Applied Parasitology from the University of Ghana. Dr. Ansa was formerly at the CSIR-Water Research Institute before his appointment as Director of the CSIR-Animal Research Institute. He serves on a number of national Technical Committees (such as the National Biological, Chemical & Nuclear Weapons Control, National Ministerial Task Team on Algal Toxin etc) as well as International Technical Committees such as the Ecological Sequestration Trust on Sanitation Resilience, Belgium, International Water Association (IWA), UK Specialist Groups on Health-related Water Microbiology, Small Water and Wastewater Systems etc. He is External Examiner for Graduate Programs of the Kwame Nkrumah University for Science and Technology (KNUST) Department of Civil Engineering and reviews for Journal of Water and Health (IWA), Water Research (Elsevier), Ecological Engineering (Elsevier), Applied Water Science (Springer), Journal of Science and Technology (KNUST) etc. He has led several donor-funded projects and Consultancies which has had significant positive impact on communities such as the Sustainable Land and Water Management Project, Compassion International Water Quality Assessments, UNICEF Water Safety Plan Monitoring etc. He has over 70 publications, most of which are peer-reviewed.

Selected Peer-reviewed Publications

  1. Banu R. A, Ansa E. D.O., Akrong M. O., Ansa G. A., Mohammed B., (2018). Microbial Water Quality Assessment of Packaged Drinking Water of Pre-School Children in some parts of Accra. Ghana Journal of Science 59: 31-40.
  2. Ansa, E.D.O., Sakyi, R.L., Asmah, M.H., Acheampong, M.A. and Lamptey (2017). An assessment of environmental conditions and the benthic fauna of the Odaw River Basin. West Africa Journal of Applied Ecology 25 (2):17-29
  3. Andoh, A., Ansa, E.D.O., Ansa, G.A. (2017). Pulsed ultra-violet light inactivation of pure cultures of indicator and pathogenic bacteria. Desalination and Water Treatment 82:362-368
  4. Acheampong, M.A. and Ansa, E.D.O. (2017). Low-cost technologies for mining wastewater treatment. Journal of Environmental Science and Engineering B, 6(8):391-405
  5. Ansa, E.D.O., Boateng, E., and Ackon, S. (2017). Microbial removal efficiency of a natural wastewater treatment system and the impact of its effluent on receiving waters. Ghana Journal of Science. 57:47-56.
  6. Ansa, E.D.O., Andoh, A.H., Banu, R. A. and Ansa, G.A. (2017). Photoreactivation in bottled drinking water after inactivation with pulsed ultra-violet light. Ghana Journal of Science 57:57-64.
  7. Terkpe, M., Akrong, M. O., Banu, R.A. Asmah, M.H. and Ansa, E.D.O. (2017). Bacteriological Quality of Drinking Water in the Atebubu-Amantin District of the Brong-Ahafo Region of Ghana. Applied Water Science 7(5):2571-2576
  8. Ansa, E.D.O., Andoh, A.H., Nienu, P., Banu, R., Akrong, M., Acheampong, M.A., Adiyiah J. (2016). Sunlight inactivation of faecal coliforms in domestic wastewater. Desalination and Water Treatment 57(30):13979-13986
  9. Acheampong, M.A., Ansa, E.D.O., Woode, M.Y., Awuah, E. (2015). Biosorption of lead (II) unto the shell of Cocos nucifera and the seeds of Moringa oleifera. Chemical Engineering Communications 202:946-953.
  10. Ansa, E.D.O., Awuah, E., Andoh, A., Banu, R., Dorgbetor, W.H.K., H.J., Lubberding, H.J. Gijzen (2015). A review of the mechanisms of faecal coliform removal from algal and duckweed waste stabilization pond system. American Journal of Environmental Science 11(1): 28-34.
  11. Ansa, E. D.O, Lubberding, H. J., and Gijzen, H. J. (2014). Combined constructed wetlands and stabilization ponds - A key eco-technology for treating Africa’s wastewater. In: Harnessing land and water resources for improved food security and ecosystem services in Africa. Oku, E.E., Asubonteng, K.O. and Nutakor, P. (Eds). United Nations University (UNU) Institute for Natural Resources in Africa, Accra, Ghana. ISBN: 978-9988-6330-97-74
  12. Adiyiah J., Acheampong M.A., Ansa, E.D.O., Kelderman, P. (2014). Grain-Size Analysis and Heavy Metals Distribution in Sediment Fractions of Lake Markermeer in the Netherlands. International Journal of Environmental Science & Toxicology 2(8):160-167.
  13. Ansa, E.D.O., Andoh, A.H., Ansa, G.A., Adiyiah, J. and Acheampong, M.A. (2013). Escherichia coli Removal in Tropical Oligotrophic and Eutrophic Lakes. Journal of Environmental Science and Engineering A 2:719-724
  14. Acheampong, M.A., Ansa, E.D.O., Adiyiah, J.H. (2013). Physico-chemical characteristics of a gold mining tailings dam wastewater. Journal of Environmental Science and Engineering A2: 469-475
  15. Nkrumah, F.K., Acheampong, M.A., Ansa, E.D.O., Adiyiah, J.H. (2013). Wastewater quality assessment of a petroleum refinery in Ghana. Journal of Environmental Science and Engineering B 2:514-520
  16. Ansa, E.D.O. (2013). The removal of faecal coliforms in waste stabilization pond systems and eutrophic lakes. Taylor & Francis/Balkema, Leiden, The Netherlands.ISBN: 978-1-138-00099-5
  17. UNU-INRA (2012). National and Trans-Boundary Water Resources Management in Africa. E.D.O. Ansa, T.A. Koomson, E.T. Ayuk (Eds). United Nations University Institute for Natural Resources, Accra, Ghana. ISBN:978-9988-633-60-8
  18. Ansa, E. D.O., Allotey, G. K., Lubberding, H. J., Ampofo, J.A. and Gijzen, H. J. (2012). Performance of a hybrid algal and duckweed pond system treating raw domestic wastewater. Ghana Journal of Science 52: 3-16
  19. Ansa, E.D.O., Acheampong, M.A., Nkrumah, F.K., Boakye-Yiadom, S. and Dorgbetor, W.H.K. (2012). Faecal coliform attachment to algae and suspended solids in natural wastewater treatment systems. Ghana Journal of Science 52:17-30.
  20. Ansa, E. D.O, Lubberding, H. J., Ampofo, J. A, Amegbe, G. and Gijzen, H. J. (2012). Attachment of faecal coliform and macro-invertebrate activity in the removal of faecal coliform in domestic wastewater treatment pond systems. Ecological Engineering 42: 35-41.
  21. Ansa, E. D. O., Lubberding, H. J. and Gijzen, H. J. (2011). The effect of algal biomass on the removal of faecal coliform from domestic wastewater. Applied Water Science 37(2): 317-324
  22. Ansa, E.D.O., Lubberding, H.J., Ampofo, J.A., and Gijzen, H.J. (2011). The role of algae in the removal of Escherichia coli in a tropical eutrophic lake. Ecological Engineering 37 (2): 317-324.
  23. Morgan, J.A.T., Dejong, R.J., Adeoye, G.O., Ansa, E.D.O. et al. (2005). Origin and diversification of the human parasite Schistosoma mansoni. Molecular Ecology 14: 3889-3902.
  24. Mensah, G.T., Ansa, E.D.O. and Kpikpi, J.E.K. (2005). Urinary schistosomiasis control programme: A case of study of some selected school children in the Lower Volta Basin. Ghana Journal of Science 45: 3-8.