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All Journal Jurnal Teknik Indonesia (JU-TI) Journal Majelis Paspama
Stephen Oyelami
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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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Driving Sustainability in Power Generation: Amine Scrubbing Integration as a Cost-Effective Measure for Carbon Dioxide Mitigation Nnadikwe Johnson; Onuoha fidelis wopara; Akuchie Justine Chukwuma; Stephen Oyelami
Jurnal Teknik Indonesia Vol. 5 No. 01 (2026): Jurnal Teknik Indonesia (JU-TI) 2026
Publisher : SEAN Institute

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The imperative of energy security, sustainability, and independence necessitates the continued use of coal for electricity generation. However, to mitigate rising CO2 levels, developing carbon capture and storage (CCS) technologies is crucial. This study explores various approaches to optimize CO2 capture using chemical solvents, focusing on reducing the energy demands of solvent regeneration. Our analysis reveals that the current cost of CO2 capture stands at approximately #55,000.000 (Naira) per ton of CO2 , with a target to reduce it to below #25,000.000,00 (Naira) per ton of CO2 . We evaluate the technical and economic performance of different approaches, calculating the specific cost per ton of CO2  captured. Our results show that:- Current Cost: #55,000.000,00 (Naira) per ton of CO2 - Target Cost: Below #25,000.000,00 (Naira) per ton of CO2 - Efficiency Reduction: Minor efficiency reductions observed in some proposed schemes
Exploring the Utilization of Plastic Sand in Construction to Drive Sustainable Practices and Foster a Circular Economy Nnadikwe Johnson; Okure Unyime Enobong; Onyewudiala Ibeawuchi Julius; Stephen Oyelami
Jurnal Teknik Indonesia Vol. 5 No. 01 (2026): Jurnal Teknik Indonesia (JU-TI) 2026
Publisher : SEAN Institute

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This research explores utilizing waste plastics in construction to promote a circular economy and mitigate plastic waste's environmental footprint in Nigeria's urban centers. Innovative bricks made from low-density polyethylene bags and sand offer thermal and sound insulation properties, pollution control, and cost reduction. The eco-friendly bricks demonstrate beneficial properties: lightweight, porous structure, low thermal conductivity, and high mechanical strength comparable to conventional bricks.The experimental process involved combining cement, sand, and waste plastic/nylon (0-15% by weight) with fly ash, followed by underwater curing and baking. Results show compressive strengths of 19.5 MPa (0% waste), 19.46 MPa (5% waste), 20.3 MPa (10% waste), and 21.1 MPa (15% waste). The bricks exhibit reduced water absorption capacity (0.085-0.34%) and lower efflorescence values.The innovative bricks offer numerous benefits: enhanced strength and durability, reduced environmental impact, and economic value for manufacturers. They contribute to sustainable construction practices, reducing sand extraction and plastic waste accumulation. This research showcases the potential for eco-friendly bricks to enhance energy efficiency in buildings and promote a sustainable ecosystem for plastic waste management.
Evaluating the Impact of Dispersants and Fluid Loss Additives on Cement Slurry Thickening Time: Experimental Design and Statistical Modeling Momoh abdulazeez adeyem; Akuma Oji; John Anaele; Nnadikwe Johnson; Stephen Oyelami
Jurnal Teknik Indonesia Vol. 5 No. 01 (2026): Jurnal Teknik Indonesia (JU-TI) 2026
Publisher : SEAN Institute

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Optimising cement slurry properties is critical for successful zonal isolation and preventing wellbore failures in oil and gas operations. This research investigated the effects of dispersant (0.1-1.0% BWOC) and fluid loss additive (0.1-0.35 gal/sk) concentrations on thickening time and free fluid formation of Class G cement slurry using a 3² factorial design. Thickening time was measured with an atmospheric consistometer; free fluid via HTHP filter press. Analysis included ANOVA and multiple regression modeling. Key findings Dispersant strongly influences thickening time (R² = 0.981, RMSE = 8.731 min). Fluid loss additive controls filtration and moderately affects thickening time. Significant dispersant-fluid loss additive interaction (p = 0.040) indicates synergistic effects. Models enable predictive optimization of cement slurry properties
Natural Gas dehydration methods-Challenges and fixes Onuoha fidelis wopara; Johnson, Nnadikwe; Momoh abdulazeez adeyemi; Stephen Oyelami
Journal Majelis Paspama Vol. 4 No. 01 (2026): Journal Majelis Paspama, 2026
Publisher : Journal Majelis Paspama

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Natural gas dehydration is a crucial process in the energy industry, ensuring pipeline quality gas that meets stringent specifications for transmission and distribution. This research examines key technologies employed in natural gas dehydration, including glycol absorption, desiccant adsorption, solvent salt adsorption, chemical cooling, and hydrate suppression. Among these, glycol absorption remains the most widely used method, particularly in large-scale gas processing operations. However, it faces significant challenges such as emissions, glycol losses, and degradation, particularly in Nigeria's gas fields and storage facilities, impacting operational efficiency and environmental compliance. Desiccant adsorption offers high dehydration efficiency, achieving very low water dew points, but requires effective regeneration strategies and is often limited to specific applications due to cost and complexity. Other methods like solvent salt adsorption, chemical cooling, and hydrate suppression have niche applications but are less prevalent for mainstream gas dehydration. This study focuses on optimizing glycol absorption systems, addressing prevalent issues, and proposing practical solutions to enhance gas processing performance. It details the technology's process flow, operational challenges, and potential fixes for improving dehydration efficiency, reducing emissions, and minimizing losses. Key aspects like glycol circulation rates, regeneration systems, and contamination management are analyzed to provide a comprehensive understanding of the process.
Boosting Carbon Capture in /Coal Plants with Pinch Analysis for Greener Energy Johnson, Nnadikwe; Iheme Chigozie; Momoh abdulazeez adeyem; Stephen Oyelami
Journal Majelis Paspama Vol. 4 No. 01 (2026): Journal Majelis Paspama, 2026
Publisher : Journal Majelis Paspama

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  Boosting carbon capture in coal-fired power plants is crucial for achieving greener energy and mitigating climate change . Pinch analysis, a systematic optimization technique, enhances carbon capture efficiency by minimizing energy consumption and reducing environmental impact. In coal plants, achieving high-purity CO₂ capture is a key objective. Using a 30% MEA (monoethanolamine) solution for carbon capture introduces an initial energy premium of 17.6%. However, applying pinch assessment techniques results in a significant 12.3% reduction in overall energy consumption. This translates to a substantial 50% decrease in energy requirements for carbon capture operations. The implementation of pinch analysis enables coal-fired power plants to achieve an impressive 90% CO₂ capture efficiency, underscoring the potential of this approach to enhance sustainability and cost-effectiveness. By optimizing heat exchange networks and identifying optimal heat transfer points, pinch analysis reduces energy and water consumption in carbon capture processes. This systematic optimization contributes to operational efficiency improvements, paving the way for greener and more sustainable power generation practices. The use of pinch assessment techniques offers a pathway towards cleaner energy production, reduced environmental footprints, and compliance with global climate goals . By strategically matching hot and cold streams, coal plants can minimize resource usage while boosting carbon capture performance.
Sustainable Food Drying Enhancing Efficiency, Nutrition, and Waste Reduction in Food Production Johnson, Nnadikwe; Iheme Chigozie; Momoh abdulazeez adeyem; Stephen Oyelami
Journal Majelis Paspama Vol. 4 No. 01 (2026): Journal Majelis Paspama, 2026
Publisher : Journal Majelis Paspama

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Food drying is crucial for ingredient innovation and product development. Recent breakthroughs in pretreatments, processes, and technologies like microwave and ultrasound drying have transformed the industry, boosting efficiency, preserving nutrients, and reducing waste. These innovations promote sustainability, enabling resource-efficient and technologically advanced food production. Wider adoption of these cutting-edge technologies is crucial to maximize their impact. By embracing modern drying methods, businesses can enhance sustainability, improve production, and increase profitability while preserving nutritional value. This study bridges research and practice, showcasing the benefits of modern drying technologies for sustainable food systems. By adopting these innovations, businesses can foster sustainability, reduce waste, and gain a competitive edge, paving the way for a more efficient and sustainable food future
Co-Authors Akuchie Justine Chukwuma Akuma Oji Iheme Chigozie John Anaele Johnson, Nnadikwe Momoh abdulazeez adeyem Momoh Abdulazeez Adeyemi Nnadikwe Johnson Okure Unyime Enobong Onuoha fidelis wopara Onyewudiala Ibeawuchi Julius