In a significant advancement for sustainable energy in Kenya, a recent study led by Benson Kariuki from the Institute of Energy and Environmental Technology has explored the potential of coal-biomass blends as an alternative fuel source for tricycles, commonly known as tuk-tuks. Published in the Journal of Chemistry, this research addresses the pressing issue of rising fuel costs, particularly for low-income communities that rely heavily on these small vehicles for transportation.
The study focuses on the gasification of Mui basin coal, which is a low-quality coal readily available in Kenya, in combination with various biomass materials such as rice husks, Prosopis juliflora, and Hyphaene compressa. By blending these materials, the researchers aimed to create a more efficient and environmentally friendly fuel. The findings indicate that blending these fuels not only enhances the hydrogen-to-carbon ratio—an important metric for cleaner combustion—but also reduces harmful emissions by lowering sulfur and nitrogen content.
Kariuki noted, “The optimal blending ratio of 1:1 for coal and biomass not only reduces pollution but also increases calorific values, enhancing syngas fuel properties.” The study revealed that the calorific values of the blended fuels improved significantly, with specific increases observed in rice husks and other biomass sources. This enhancement is crucial for the performance of internal combustion engines, making the fuel more viable for everyday use in tuk-tuks.
The commercial implications of this research are substantial. With the rising cost of conventional fuels, the development of alternative transport fuels could alleviate financial burdens on low-income drivers and contribute to a more sustainable energy landscape in Kenya. The upgraded syngas produced from these blends can be utilized in modified internal combustion engines, potentially transforming the tuk-tuk industry by providing a cleaner, cost-effective fuel option.
Kariuki’s research highlights the potential for local biomass resources to be harnessed effectively, promoting not only energy independence but also economic opportunities in the agricultural sector. Farmers who produce biomass could see new revenue streams from supplying fuel blends, while tuk-tuk operators could benefit from reduced fuel costs.
As the world seeks more sustainable energy solutions, this study underscores the importance of innovative approaches to fuel production. The research published in the Journal of Chemistry paves the way for further exploration of coal-biomass blends, demonstrating their potential to improve energy access while mitigating environmental impacts in Kenya.
