lucy odeh

The global appeal of biofuels is increasing due to rising energy demands and the depletion of fossil fuel resources. Biodiesel stands out as a promising alternative to petroleum diesel, offering a cleaner energy solution. This study addresses key challenges associated with biodiesel, such as reduced calorific value, high nitrous oxide emissions, and production costs, as well as the environmental impact of petroleum diesel, including global warming.This research focuses on the development of a novel biobased catalyst derived from palm kernel shell and eggshell. The carbon-based biomass, primarily waste palm kernel shell, was pyrolyzed to produce the catalyst. Characterization of the catalyst was performed using scanning electron microscopy (SEM), X-ray fluorescence (XRF), and Fourier transform infrared spectroscopy (FTIR). The catalyst was synthesized via the incipient wetness impregnation (IWI) technique, resulting in a bifunctional catalyst suitable for the transesterification process.The catalyst demonstrated high efficiency in the transesterification process for biodiesel production. Optimal conditions yielded an 88.14% biodiesel conversion at an oil-to-methanol molar ratio of 1:14, catalyst loading of 5 wt.%, reaction temperature of 70°C, and reaction time of 99.244 minutes. The synthesized biodiesel met the ASTM D6751 standards as specified by the International Organization for Standardization (ISO).

Activated carbon is widely recognized for its cost-effectiveness and efficiency as an adsorbent in various processes. The adsorption properties of activated carbon are influenced by the feed materials and used activation methods. This study investigates the use of activated carbon derived from coconut shells through phosphoric acid treatment to adsorb lead nitrate from wastewater. The results indicate that the highest percentage removal for nano and micro particles was 91.65% at pH 9 and 87.58% at pH 5, respectively. For dosage analysis, the highest percentage removal for nano particles was 94.46%, while for micro-particles it was 89.88%. Time analysis showed the highest percentage removal for nano particles at 97.74% and for micro particles at 92.80%. Initial concentration analysis revealed the highest percentage removal for nanoparticles at 92.11% and for micro-particles at 86.35% at 0.1g/L. The findings demonstrate that nanoparticle activated carbon is a superior adsorbent compared to its micro form. This study supports the use of nanoparticle activated carbon from agro-wastes, promoting more affordable and effective water and wastewater treatment solutions.