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International Journal of Renewable Energy Development
Published by Center of Biomass and Renewable Energy
ISSN : 22524940     EISSN : 27164519     DOI : https://doi.org/10.61435/ijred.xxx.xxx
Core Subject : Science, Engineering,
Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering
The International Journal of Renewable Energy Development - (Int. J. Renew. Energy Dev.; p-ISSN: 2252-4940; e-ISSN:2716-4519) is an open access and peer-reviewed journal co-published by Center of Biomass and Renewable Energy (CBIORE) that aims to promote renewable energy researches and developments, and it provides a link between scientists, engineers, economist, societies and other practitioners. International Journal of Renewable Energy Development is currently being indexed in Scopus database and has a listing and ranking in the SJR (SCImago Journal and Country Rank), ESCI (Clarivate Analytics), CNKI Scholar as well as accredited in SINTA 1 (First grade category journal) by The Directorate General of Higher Education, The Ministry of Education, Culture, Research and Technology, The Republic of Indonesia under a decree No 200/M/KPT/2020. The scope of journal encompasses: Photovoltaic technology, Solar thermal applications, Biomass and Bioenergy, Wind energy technology, Material science and technology, Low energy architecture, Geothermal energy, Wave and tidal energy, Hydro power, Hydrogen production technology, Energy policy, Socio-economic on energy, Energy efficiency, planning and management, Life cycle assessment. The journal also welcomes papers on other related topics provided that such topics are within the context of the broader multi-disciplinary scope of developments of renewable energy.
Arjuna Subject : Energi (semua kategori) - Energi Terbarukan, Keberlanjutan dan Lingkungan
Articles 6 Documents
 1 
Search results for , issue "Accepted Articles" : 6 Documents clear
Towards the Sustainability of an Oil Refinery: A Synergy between ISO 50001 and ISO 14001 Management Systems Chaves Almanza, Fabio Daniel
International Journal of Renewable Energy Development Accepted Articles
Publisher : Center of Biomass & Renewable Energy (CBIORE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61435/ijred.2025.61162

Abstract

The most implemented standards worldwide for Energy Management Systems (EnMS) and Environmental Management Systems (EMS), ISO 50001 and ISO 14001 respectively, maintain a close correspondence due to the Harmonized Structure (HS) recently established by the International Organization for Standardization (ISO). However, achieving greater energy efficiency does not always align adequately with environmental issues, which is most evident in fossil fuel-based industries. Therefore, this work aims to explore a synergy between these standards and use it to evaluate a technological change in an oil refinery, for better energy performance and especially environmental sustainability. The results show that the change in technology increases electric efficiency from 14% to 45% and the rate of atmospheric emissions per unit of energy generated decreases by 15% on average. However, as fuel consumption doubles, the total emission rises by about 100%. This conflict between energy and environmental performance leads to an analysis of sustainable resource management to better understand the relevance of the change in technology as an appropriate solution for the refinery in the gradual transition to clean energy. The findings of this work shed light on how to deal with oil refineries in the global landscape of urgent sustainable development.
Optimization of Biodiesel Production from Candlenut Oil via Simultaneous Reaction Using a Bifunctional CeO2.CaO Catalyst Widayat, Widayat
International Journal of Renewable Energy Development Accepted Articles
Publisher : Center of Biomass & Renewable Energy (CBIORE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61435/ijred.2025.61065

Abstract

The biodiesel synthesis process with a high free fatty acid content can be accomplished in a single stage using solid catalysts that function simultaneously as both base and acid catalysts. In this study, CeO₂.CaO was used as a bifunctional catalyst for biodiesel synthesis from candlenut seed oil. Catalyst characterization includes FTIR, BET, SEM-EDX, and TPD analysis. Process optimization was carried out using the central composite design method on Design Expert software. To determine the effect of each process variable on the simultaneous reaction, the effect of methanol-to-oil molar ratio, catalyst loading, and reaction temperature on FAME yield was also analyzed. The optimum operating conditions to achieve high FAME yield were found at methanol-to-oil molar ratio of 10.3:1, 5.39% w/w catalyst loading, and a reaction temperature of 60°C.
Hybrid PEMFC–Battery Systems for Marine Propulsion: Optimization of Efficiency and Operational Safety Alrwashdeh, Saad
International Journal of Renewable Energy Development Accepted Articles
Publisher : Center of Biomass & Renewable Energy (CBIORE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61435/ijred.2026.62412

Abstract

The present research paper introduces a full-scale optimization model of a hybrid Proton Exchange Membrane Fuel Cell (PEMFC)-battery propulsion system that is designed to be used in the marine environment and achieve twofold goals of maximizing efficiency and ensuring the safety of the operation. The hybrid design uses the sustained high-efficiency capability of the PEMFC stack and the rapid responsiveness of the battery as a stabilizing action on transient loads, prolongs stack life and minimizes the hydrogen usage. The multi-objective optimization and model-predictive control (MPC) methods are implemented to synchronize the thermal and water management, load distribution, and safety-constrained performance in the circumstances of realistic voyage conditions. The outcome shows that efficiency in systems is increased at 44 in a single PEMFC and 52.6 in MPC with eco-cooling control, with the consumption of hydrogen reduces by almost 30 percent, battery degradation reduces by 34 percent, and the safety margin index increases by 40 percent. More solar input and integration would lead to a further 15-18% reduction in CO2-equivalent voyage-average emissions. Dynamic simulation indicates that the hybrid configuration has stack temperature in the range of 60-75 C, balanced water control (±0.8 kg.h-1), and constant output operation (±10 percent of nominal power). The thermal, electrochemical, and mechanical-acoustic tests demonstrate that the combined system enjoys a multidomain functional stability that is better than traditional systems. These results make the proposed PEMFC-battery architecture a technically feasible and scalable pathway to safe, efficient, and zero-emission marine propulsion in line with the IMO 2050 decarbonization requirements.
Methodology for the Selection and Optimal Sizing of Standalone PV / Wind Energy Systems with Battery Storage under Resource Availability Constraints Guétinsom Jean Kafando; Daniel YAMEGUEU; Sani Moussa Kadri
International Journal of Renewable Energy Development Accepted Articles
Publisher : Center of Biomass & Renewable Energy (CBIORE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61435/ijred.2026.61740

Abstract

Access to electricity remains a major challenge in sub-Saharan Africa, particularly in rural areas where grid extension is often costly and unprofitable. Standalone photovoltaic (PV) and/or wind power systems with battery storage represent a promising solution, yet they still face technical and economic barriers, especially related to sizing and storage costs. This article proposes an innovative methodology for the selection and optimal sizing of such systems, integrating a predictive battery aging model based on the analysis of real charge/discharge cycles using the Rainflow algorithm and Miner’s rule. The methodology relies on four main techno-economic performance indicators: the Loss of Power Supply Probability (LPSP), the Levelized Cost of Energy (LCOE), the Capacity Factor (CF) of a wind turbine, and the Weighted Index of Complementarity and Productivity (WICP). It accounts for available resources, the user’s hourly consumption profile, and local climatic conditions. The approach is applied to the case of Nagréongo, a rural area in Burkina Faso. Only the PV/battery system proves to be a viable option. In contrast, the site is unsuitable for wind energy system installation, even in a hybrid configuration, as both the capacity factor (CF) and the wind complementarity index (WICP) remain below acceptable thresholds. The study also reveals that optimal configurations depend heavily on the hourly consumption profile, despite identical daily energy needs. Finally, a comparison with the conventional intuitive method and the HOMER software shows that the proposed methodology can reduce the LCOE by more than 50% and around 20%, respectively, thanks to a better consideration of real battery aging, hourly demand variability, and system idle periods.
Optimization of energy efficiency and purge strategy of an open-cathode PEMFC stack with a dead-end anode configuration Tan-Thich Do; Trung-Kien Vi; Phuoc-Dong Doan
International Journal of Renewable Energy Development Accepted Articles
Publisher : Center of Biomass & Renewable Energy (CBIORE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61435/ijred.2026.62153

Abstract

Nowadays, proton exchange membrane fuel cells (PEMFCs) are acknowledged as promising energy solutions toward reaching net-zero emissions by 2050 due to their highlighted properties. To enhance electrochemical reactions and improve hydrogen utilization, the dead-end anode (DEA) configuration was employed to investigate the voltage and energy efficiency of an open-cathode PEMFC stack (100 W-20 cells) at optimal fan speed. The results show that when the operating current and purge interval increased, the stack voltage decreased owing to water impurities, water, and nitrogen buildup in the flow field anode channel. At optimal purge intervals of 540, 360, 280, and 60 s, the energy efficiency was achieved at 45.55%, 45.31%, 43.11%, and 35.05%, respectively. Compared to a previous study, these values represent increases of 25.22%, 12.91%, 9.15%, and 2.09% for operating currents of 1, 3, 5, and 8 A, respectively. These improvements were achieved by optimizing the fan speed, purge interval, and microcontroller unit power consumption. Finally, a hydrogen purge strategy was developed to optimize energy efficiency, considering voltage stability and hydrogen consumption. This study provides meaningful insights into optimizing the energy efficiency of open-cathode PEMFC stacks across various load levels.
Electrospun PVA/CQD Nanofiber–Coated Carbon Anode for High–Performance Microbial Fuel Cells: A Comparative Study Firman Ridwan; Muhammad Restu Raimon; Dean Bilalwa Agusto; Wismalqi Wismalqi; Feskaharny Alamsjah
International Journal of Renewable Energy Development Accepted Articles
Publisher : Center of Biomass & Renewable Energy (CBIORE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61435/ijred.2026.61677

Abstract

This research presents a novel approach to MFCs by utilizing carbon anodes coated with nanofibers through the electrospinning technique, incorporating PVA and CQDs as functional components. The MFC experiments involved two electrogenic bacteria, Bacillus subtilis and Escherichia coli, using sugarcane juice as the substrate. Characterization tests, such as SEM, FTIR, and UV–Vis, verified the incorporation of CQDs and bacteria into the nanofiber structure. Electrochemical analyses, including CV and EIS, revealed a notable decrease in charge transfer resistance and an improvement in electron kinetics, especially with B. subtilis. The MFC based on B. subtilis showed superior performance, achieving a maximum power density of 1754 mW/m² on the fourth day, which is about 3.5 times greater than the E. coli system, which only reached 491 mW/m². The enhanced performance of B. subtilis is credited to its capability to form a strong biofilm on the nanocomposite anode surface, promoting direct electron transfer, and its metabolic pathways that aid in the production of redox metabolites. The findings highlight the potential of nanofiber–coated carbon anodes and the superiority of B. subtilis as an electrogenic bacterium for enhancing MFC performance and advancing sustainable energy production from organic waste.

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