Chemical Engineering http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/57 2026-05-13T05:39:22Z 2026-05-13T05:39:22Z Emene, Akanimo http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/30204 2026-01-02T20:13:25Z 2025-03-01T00:00:00Z

Title: FEASIBILITY OF CADMIUM ADSORPTION USING LUFFA CYLINDRICA: MECHANISTIC INVESTIGATION OF MASS TRANSFER STAGES INVOLVED IN THE ADSORPTION PROCESS Authors: Emene, Akanimo Abstract: Adsorption is a commonly used treatment for wastewater. The utilisation of Luffa cylindrica as an adsorbent had previously been adopted to treat wastewater laden with heavy metal ions. The investigation of Luffa cylindrica (LC), an adsorbent, applied for the uptake of cadmium ions was carried out. The adsorption capacity was increased when the LC was treated with NaOH.The solution pH, immersion time, initial adsorbate concentration and adsorbent concentration influences the uptake of the cadmium ions. At an optimum pH range approximately within6 &8, the adsorption capacity increased. The pseudo second order kinetic and Sips isotherm models showed the best fit. The characterisation of the LC shows the presence of binding groups that aid adsorption. The mass transfer factor model (MTfM) was applied, and it showed no dependence of the metal ion adsorptive mass transfer on film diffusion. The MTfMfurther shows the impact of treated LC on the adsorption capacity. The outcome of the efficiency of LC as an excellent adsorptive material and the molecular understanding of the LC showed its potential to be used as an adsorbent for wastewater treatment in developing countries. This material can also be utilized to produce nanomaterials for wastewater treatment applications. Description: Mass Transfer Factor Model

2025-03-01T00:00:00Z Uthman, H http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/30075 2025-07-31T15:37:41Z 2025-02-24T00:00:00Z

Title: EXTRACTION AND PURIFICATION OF LITHIUM FROM LEPIDOLITE VIA SULPHURIC ACID ROASTING Authors: Uthman, H Abstract: Presently, the strategic position of lithium has been elevated remarkably with the rapid development of the new energy industry and increasingly stringent requirements of carbon emissions. To improve the production efficiency of related chemicals from lepidolite, the higher extraction rate of lithium from lepidolite mineral is of great significance. This study explores an energy-efficient approach for extracting lithium from lepidolite using sulphuric acid roasting. Lepidolite ore was collected from Eggon, Nasarawa State, Nigeria. It was crushed, sieved to 250 micrometers, and calcined at 900°C. The calcined ore was roasted with sulphuric acid at 300°C for 2 hours. This was followed by water leaching and purification using NaOH and Na2CO3 to recover lithium as lithium carbonate. The procedure yielded 1.9 grams of lithium carbonate with a product yield of 0.552% from 80 grams of lepidolite, and a recovery efficiency of 17.68%. X–ray diffraction (XRD) validated the effective conversion, while Atomic Absorption Spectroscopy (AAS) demonstrated a purity of 2.11%. X–ray fluorescence (XRF) identified the elemental composition of the raw lepidolite ore in bulk and Scanning Electron Microscopy (SEM) provided detailed insights into the morphological changes during the lithium extraction process. The entire energy consumption was 4.32 kWh. This research proposes a streamlined, lower-temperature extraction approach and suggests future optimization in energy utilization and exploration of other leaching agents.

2025-02-24T00:00:00Z S. O. Ohile, A. A. Aboje, Uthman H, A. D. Dirisu, Ibrahim Yusuf http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/30074 2025-07-31T15:28:57Z 2023-02-15T00:00:00Z

Title: PRODUCTION, OPTIMIZATION OF BIODIESEL FROM DESERT DATE SEED OIL VIA TRANSESTERIFICATION Authors: S. O. Ohile, A. A. Aboje, Uthman H, A. D. Dirisu, Ibrahim Yusuf Abstract: Due to the adverse effect of exhaust emissions from the combustion of petroleum-based fuels, the global warming phenomenon and greenhouse effect has escalated in recent decades. These problems have necessitated the use of alternative fuels more than ever in today’s ever-changing world. Furthermore, convectional fossil fuels such as coal, petroleum and natural gas are constantly being depleted. Nevertheless, the world’s dependency on these fuels is still growing and this problem has prompted the need for this research, which is aimed at the production of biodiesel from desert date seed oils as an alternative source of fuel since they are readily available and environmentally friendly. The study reports the yield of biodiesel from the transesterification of desert date seed oil using methanol as the alcohol and NaOH as the catalyst for the reaction. Optimization was carried out via response surface methodology (RSM) using the Box-Behnken approach with the software, Design Expert 13. The results of the analysis of the produced biodiesel, which were found to agree very well with the standard values, indicated that the liquid produced from the desert date seed oil by transesterification process was indeed, biodiesel with a yield of 82 %, which is in a close agreement with results reported in the literature.

2023-02-15T00:00:00Z A. A. Aboje, S. O. Ohile*, Uthman H, M.O. Olutoye and C.A. Nwachukwu http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/30073 2025-07-31T15:16:08Z 2023-06-12T00:00:00Z

Title: Optimization and Characterization of Biodiesel Production from Desert Date Seed Oil (Balanites aegyptiaca) via Transesterification Reaction Authors: A. A. Aboje, S. O. Ohile*, Uthman H, M.O. Olutoye and C.A. Nwachukwu Abstract: In recent years, the combustion of petroleum-based fuels has caused harmful exhaust emissions, contributing to the escalation of global warming and the greenhouse effect. Consequently, the urgency for alternative fuels has grown in our constantly evolving world. Furthermore, traditional fossil fuels like coal, petroleum, and natural gas are being depleted at a steady pace. Despite this depletion, the world's dependence on these fuels continues to increase. This pressing issue has sparked research focused on the production of biodiesel from desert date seed oils, which are both easily accessible and environmentally friendly. The study involved the transesterification of desert date seed oil, using methanol as the alcohol and NaOH as the catalyst for the reaction. The optimization process employed response surface methodology (RSM) with the Box-Behnken approach, utilizing Design Expert 13 software. The analysis of the resulting biodiesel closely matched standard values, affirming that the liquid derived from the transesterification process of desert date seed oil was indeed biodiesel. The yield of this process was 92%, consistent with the findings of Giwa et al. (2016) who reported a yield of 82%.

2023-06-12T00:00:00Z