N. Oparaku

Waste Water Disinfection Utilizing Ultraviolet Light

C. Ibeto, B. Mgbenka, N. Oparaku, 2011 .

Feasibility and technical studies of two water recirculating systems using two different power sources, solar photovoltaic and fuel generator

N. Oparaku, C. Nnaji, 2013 .

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

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

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.