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All Journal Jurnal Teknik Indonesia (JU-TI) Journal Majelis Paspama
Tare Caroline Gillow
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Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Comparative Analysis and Characterisation of Amine-Local Solvent Blends for Natural Gas Sweetening Tare Caroline Gillow; Ipeghan J. Otaraku; Peter O. Muwarure; Johnson Nnadikwe; Onuche Izuchukwu
Jurnal Teknik Indonesia Vol. 4 No. 01 (2025): Jurnal Teknik Indonesia (JU-TI) 2025
Publisher : SEAN Institute

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This study compared and characterised  hybrid amine-local solvent blends for sustainable natural gas sweetening. The study designed and evaluated an absorption process using blends of monoethanolamine (MEA) with solvents derived from agricultural waste Plantain Peel Ash Extract (PPAE) and Coconut Shell Ash Extract (CSAE). The comprehensive characterisationprovided fundamental insights into the viability of using agricultural waste for gas sweetening. Plantain peels' high volatile matter (74.3%) yields ash rich in active alkaline compounds during calcination, while coconut shells' higher fixed carbon (19.5%) produces more stable char with lower alkaline content. The ultimate analysis showed that coconut shells' higher carbon content (49.5%) aligns with its lignocellulosic nature, while plantain peels' higher oxygen content (47.5%) indicates more carbohydrate-rich material that decomposes to yield higher ash alkalinity.The electrolyte properties further confirm PPAE's superiority, with higher pH (12.1), conductivity (28.5 mS/cm), and ionic strength (0.42 mol/L), all contributing to better absorption performance while influencing corrosion behavior.
Corrosivity Assessment of Hybrid Amine-Local Solvent Blends in Natural Gas Sweetening Tare Caroline Gillow; Ipeghan J. Otaraku; Peter O. Muwarure; Johnson Nnadikwe
Jurnal Teknik Indonesia Vol. 4 No. 02 (2025): Jurnal Teknik Indonesia (JU-TI) 2025
Publisher : SEAN Institute

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 This study optimised hybrid amine-local solvent blends for sustainable natural gas sweetening, tackling corrosion and environmental footprint of imported monoethanolamine (MEA). The study designed and evaluated an absorption process using blends of MEA with solvents derived from agricultural waste Plantain Peel Ash Extract (PPAE).  The study integrates computational corrosion prediction models from the outset, acknowledged and addressed a common deficiency, performance optimisations were evaluated with critical material compatibility constraints from the beginning.Corrosivity assessment predicted a manageable corrosion rate of 0.29 mm/year for the optimal blend, within acceptable limits for carbon steel with standard inhibition. The study conclusively establishes the 50/50 MEA/PPAE hybrid solvent as a technically robust and  environmentally superior alternative. It successfully valorises local agricultural waste, reduces dependency on imported chemicals, and aligns with Nigeria's local content policy and global sustainability goals, offering a viable pathway for greener and more cost-effective natural gas processing.  
Enhancing Lubricating Oil Performance Through the Integration of Viscosity Improvers in Mono-Grade and Multi-Grade Blends Johnson, Nnadikwe; Iheme Chigozie; Samuel Nwaozuzu; Tare Caroline Gillow
Journal Majelis Paspama Vol. 4 No. 01 (2026): Journal Majelis Paspama, 2026
Publisher : Journal Majelis Paspama

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This study focuses on enhancing lubricating oil performance through the integration of viscosity improvers in multi-grade blends. A systematic approach was followed to formulate a high-performance multi-grade engine oil, starting with 5 liters of base oil and 1 liter of paraffin oil (100N). Additives (0.42 kg, 7% of the total blend) including Aspen, Tackifier, anti-wear, corrosion inhibitors, detergents, dispersants, and antioxidants were meticulously measured and added to the mix. The mixture was heated to 70°C to facilitate reaction between the base oil and additives, and then cooled to room temperature (around 30°C). Subsequently, 0.5 kg of viscosity index improver was introduced into the mixture, followed by the addition of 5 grams of dye. Quality control tests were conducted to ensure compliance with Standard Organization of Nigeria (SON) standards. The results showed that the product met the stringent specifications outlined by the regulatory body, demonstrating reliability and performance. This study highlights the importance of viscosity improvers in enhancing lubricating oil performance and meeting industry standards.
Co-Authors Iheme Chigozie Ipeghan J. Otaraku Johnson Nnadikwe Johnson, Nnadikwe Onuche Izuchukwu Peter O. Muwarure Samuel Nwaozuzu