N. F. Oparaku

Comparative study of renewable energy based water disinfection methods for developing countries.

C. G. Okpara, C. N. Ibeto, C. Ibeto, 2010 .

An Overview of Water Disinfection in Developing Countries and Potentials of Renewable Energy

C. G. Okpara, C. N. Ibeto, C. Ibeto, 2011 .

Biodigestion of cassava peels blended with pig dung for methane generation

N. F. Oparaku, A. Ofomatah, E. Okoroigwe, 2013 .

The effect of physicochemical parameters on the abundance of zooplankton of River Adada, Enugu, Nigeria

J. C. Ezeukwu, N. F. Oparaku, J. Ndefo, 2021, Journal of Freshwater Ecology.