Effect of Processing on the Proximate Composition and Vitamins A and E in Groundnut (Arachis hypogaea) From New Bussa, Borgu Local Government, Niger State, Nigeria

Abstract

This study investigated the biogas production potential of chicken dung and pig dung, individually and in combination, under anaerobic digestion conditions with and without the use of a yeast catalyst as control. The results revealed that chicken dung, especially when treated with yeast, consistently produced higher biogas yields than pig dung, with a peak of 0.2250 g on Day 7, compared to 0.1375 g from pig dung. The superior performance of chicken dung is attributed to its higher nitrogen content and lower fiber composition, which promoted faster microbial digestion. Co-digestion of both wastes resulted in the highest cumulative gas output of 0.2013 g on the 7th day, thus demonstrating the effectiveness of combining substrates with complementary characteristics. The addition of yeast catalyst significantly enhanced biogas yields across treatments, while untreated and low-quantity mixtures exhibited poor and delayed gas production. The study concludes that chicken dung is a more efficient substrate for biogas generation. It recommends the use of catalysts, proper waste preparation, and farmer education as key strategies for improving rural biogas systems.