cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
H Hadiyanto
Contact Email
hadiyanto@che.undip.ac.id
Phone
-
Journal Mail Official
ijred@live.undip.ac.id
Editorial Address
CBIORE office, Jl. Prof. Soedarto, SH-Tembalang Semarang
Location
Kota semarang,
Jawa tengah
INDONESIA
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 8 Documents
 1 
Search results for , issue "accepted articles" : 8 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.
Economic Environmental Optimization in Multiple Renewable Energy Sources with Demand Response based on Multi-Objective Optimization Algorithm Zhifeng Li; Shuang Zhang
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.2026.61951

Abstract

The use of renewable energy sources in distribution networks results in considerable environmental and economic benefits, but it introduces challenges related to uncertainty, intermittency, and system stability. A complete multi-objective optimization model is developed that integrates renewable energy units, battery energy storage systems, electric vehicles, demand response programs, and hydro turbine units to solve these problems. The proposed methodology achieves cost savings and reduces carbon footprint while maintaining operational stability in the system. The optimization model includes full mathematical representations of all components including photovoltaic and wind generation systems and battery energy storage system state-of-charge dynamics and electric vehicle charging and discharging schedules and controllable hydro generation. A time-of-use demand response scheme is adopted to model demand flexibility which allows for load shifting and increased renewable utilization. The model is employed in a case study of 150 customers; the framework shows its efficiency through comparative simulations that evaluate performance under scenarios with demand response and without demand response. The results show that demand response reduces peak demand, improves storage coordination, and increases renewable integration. The demand response lowered costs to $6,300-$11,150 and emissions to 12,825-12,860 kg. The configuration of electrical vehicle and battery energy storage systems are combined to achieve peak shaving allowing customers to support the grid and the hydro turbine can provide effective back up power when the renewables are unavailable. The results indicate that coordinated optimization of renewables with storage and demand flexibility leads to improvements in cost-emission performance while enhancing sustainability and system resiliency.
Low-Density Floating PGlu–STY/EPS Immobilized Lipase Biocatalyst with Particle-Size-Controlled Architecture for Fatty Acid Ethyl Ester Production Natta Rattanapanya; Thanaporn Jitrasing; Jittranuch Jirapathomkul; Surachai Pornpakakul
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.2026.62501

Abstract

Pseudomonas cepacia lipase was immobilized onto low-density polyglutaraldehyde–styrene-coated expandable polystyrene beads (PGlu–STY/EPS) and applied as a reusable biocatalyst for biodiesel production from soybean oil via ethanolysis. The catalyst system was developed through a progressive catalyst-engineering strategy involving floating support design, support-density engineering, particle-size optimization, and coating morphology refinement to may improve catalyst distribution, interfacial accessibility, and operational stability. The immobilized lipase exhibited a protein loading yield of 71.81% and catalytic activity of 26.12 U g⁻¹-support. Smaller EPS particle sizes and optimized PGlu–STY coating conditions improved enzyme immobilization efficiency and catalytic performance by enhancing substrate accessibility and reducing diffusion limitations. Under optimized transesterification conditions, including an oil-to-ethanol molar ratio of 1:5, temperature of 40 °C, reaction time of 24 h, and the use of absolute ethanol, the maximum fatty acid ethyl ester (FAEE) conversion reached 92.8%. Biodiesel conversion was quantified using ¹H NMR spectroscopy. The immobilized catalyst maintained substantial catalytic activity over more than 10 repeated reaction cycles, indicating favorable operational stability and reusability. FT-IR analysis suggested successful covalent immobilization through Schiff-base interactions between aldehyde groups of the support and amino groups of the enzyme. The floating low-density EPS architecture may contribute to improved catalyst distribution in the heterogeneous oil/alcohol reaction medium and reduced unfavorable sedimentation in glycerol-rich regions, thereby potentially enhancing interfacial transesterification behavior. Although advanced characterization techniques such as BET, XPS, and GC–MS were not available in the present study, the combined catalytic and morphological results demonstrate that PGlu–STY/EPS supports provide a potentially useful platform for reusable immobilized lipase systems for enzymatic transesterification applications.
Hybrid Precursor Engineering of g-C₃N₄ for Enhanced α-Fe₂O₃/g-C₃N₄ Photoanodes in HMF-Assisted Photoelectrochemical Processes Muhammad Ibadurrohman; Regina Ulibasa; Nadia Mumtazah; Nurfadlih Syahlani
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.2026.62699

Abstract

The sluggish kinetics of Oxygen Evolution Reaction (OER) is a challenge for the development of efficient photoelectrochemical (PEC) systems for sustainable hydrogen production. In this work, α-Fe₂O₃/g-C₃N₄ photoanodes were prepared from g-C₃N₄ of different precursors (urea, melamine and/or dicyandiamide) to enhance the charge carrier dynamics and light absorption properties. The hybrid precursor engineered g-C₃N₄ play a key role to tune the structural, optical and photoelectrochemical properties of the composite photoanodes. The as prepared composite with g-C₃N₄ prepared from ternary hybrid precursors (urea, melamine and dicyandiamide) showed the best performance among the as prepared samples with lowest onset potential (0.01 V) and highest ΔE (0.88 V) indicating improved energy efficiency. The enhanced photocurrent density was attributed to the improved charge separation which was verified by the photoluminescence analysis indicating the decreased recombination. Furthermore, the addition of 5-hydroxymethylfurfural (HMF) as a model organic substrate increased the photocurrent density (~95%) with no change in the onset potential, demonstrating the excellent hole scavenging ability of the HMF. Chronopotentiometry measurements confirmed stable operation over long periods of illumination. These results suggest that hybrid precursor engineering in g-C₃N₄ and HMF-assisted PEC systems is a promising strategy to improve the photoelectrochemical performance.
Bi-directional Modulation of Electron Transfer and Capacitive Behavior in Sediment Microbial Fuel Cells by Hydrochar and Acetate Marcelinus Christwardana; Yayuk Astuti; H. Hadiyanto; Achmad Yanuar Maulana; K. Khoirunnisa; Dilla Dayanti; Keisya Natania Nur A'intan
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.2026.62325

Abstract

Marine sediment microbial fuel cells (MS-MFCs) provide a sustainable means of harvesting energy from benthic environments, yet their performance is often constrained by slow electron transfer and unstable power generation. To address these limitations, this study investigates the coupled kinetic and capacitive enhancement of MS-MFCs through co-modification with biomass-derived hydrochar (HC) and acetate as complementary electron-transfer and metabolic modulators. Four sediment compositions (0, 5, 10, and 15% v/v HC) were operated over 30 days under a 1 kΩ external load, with acetate introduced on Day 21. The apparent electron-transfer rate constant (Kₛ) increased from 1.77 s⁻¹ in the unamended control to 3.19 s⁻¹ and 3.49 s⁻¹ in the 10% and 15% HC systems, respectively. Maximum power densities reached 21.8–23.1 mW m⁻², approximately three orders of magnitude higher than the control. Mechanistically, HC provided a conductive and pseudocapacitive scaffold that facilitated microbe–electrode coupling, while acetate served as a readily metabolizable carbon source to accelerate microbial activity. Together, these effects established a synergistic link between kinetic enhancement and capacitive charge buffering, offering new insight into the design of robust, self-sustaining MS-MFCs for in-situ coastal energy recovery.
Continuous Closed-circuit Removal of Methylene Blue and Methyl Orange Dyes by Activated Pomelo Peel BiocharAlginate Hydrogel Beads Mai Lien Tran
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.2026.62466

Abstract

The successful fabrication of composite hydrogel beads was realized through the integration of activated pomelo peel biochar (PBC) into a sodium alginate (NaAlg) polymeric matrix, a process facilitated by Ca2+-induced ionic cross-linking. Morphological evaluations of the resulting material confirmed a highly textured surface, demonstrating that the PBC particles were effectively and uniformly embedded within the alginate framework. In terms of performance, the composite formulation consisting of 3.3% (w/v) PBC and NaAlg exhibited exceptional adsorption affinity for both methylene blue (MB) and methyl orange (MO) dyes. The equilibrium data showed a superior fit to the Langmuir isotherm model, which implies a predominantly homogeneous monolayer adsorption process; under continuous flow conditions at 30°C, the maximum adsorption capacities were recorded at 279.68 mg/g for MB and 179.02 mg/g for MO. Furthermore, kinetic modeling indicated that the adsorption behavior strictly followed a pseudo-second-order mechanism, suggesting that the rate-limiting step is governed by chemisorption rather than physical forces alone. The fundamental removal mechanism is believed to be a synergistic interplay of various physicochemical forces, including pore-filling within the biochar structure, p-p interactions between aromatic rings, and the formation of hydrogen bonds between the dye molecules and the composite surface.
Effect of Solution pH and Concentration of Dewandaru Fruit Extract as a Natural Dye on Optical Characteristics and Performance of Dye-Sensitized Solar Cells Dadi Rusdiana; Eka Cahya Prima; Muhammad Nurul Ikhsan; Andhy Setiawan; Endi Suhendi; Arip Nurahman; Semuel Unwakoly; Arramel Arramel
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.2026.61666

Abstract

Given growing global energy demand and the need for sustainable solutions, solar energy is a promising alternative. Dye-Sensitized Solar Cells (DSSC) represent a cost-effective photovoltaic technology, and natural dyes as sensitizers have significant potential to enhance their efficiency. This study explores the use of natural dye from Dewandaru fruit (Eugenia uniflora) in DSSCs by varying pH levels and concentrations. Natural dyes offer an environmentally friendly and sustainable alternative compared to synthetic dyes, which are often expensive and not eco-friendly. In this research, Dewandaru fruit extract was used to sensitize TiO2 photoanodes, and the effects of varying pH (1.00, 1.66, 2.27, and 3.00) and dye concentrations (2.5, 5.0, 7.5, and 10%) on optical properties and performance were analyzed. UV-Vis spectroscopy, FTIR, cyclic voltammetry, and J-V measurements assessed absorbance, energy levels, and efficiency. Optical characterization results showed that changes in pH and concentration can affect the dye’s absorbance and energy band gap. The optimal DSSC performance for the dye was found at pH 3.00, yielding a Voc of 0.425 V, Jsc of 0.053 mA/cm², fill factor of 68.7%, and efficiency of 0.1548%. The best dye concentration was 10%, achieving a Voc of 0.45 V, Jsc of 0.105 mA/cm², fill factor of 69.0%, and efficiency of 0.322%. The statistical analysis indicates that pH substantially and positively influences DSSC efficiency and band gap energy. Moreover, dye concentration significantly affects DSSC efficiency, light harvesting efficiency, Jsc, and fill factor, with the most substantial impacts observed on efficiency and Jsc. However, concentration appears to have less effect on dye absorbance, band gap energy, and the HOMO/LUMO values. The study indicates that Dewandaru fruit extract has potential as a natural dye for DSSCs, with varying performance based on pH and concentration.

Page 1 of 1 | Total Record : 8

 1 

Filter by Year

2025 2026


Reset
Filter By Issues
All Issue Vol 15, No 5 (2026): September 2026 Vol 15, No 4 (2026): July 2026 Vol 15, No 3 (2026): May 2026 Vol 15, No 2 (2026): March 2026 Vol 15, No 1 (2026): January 2026 Vol 14, No 6 (2025): November 2025 Vol 14, No 5 (2025): September 2025 Vol 14, No 4 (2025): July 2025 Vol 14, No 3 (2025): May 2025 Vol 14, No 2 (2025): March 2025 Vol 14, No 1 (2025): January 2025 Accepted Articles Vol 13, No 6 (2024): November 2024 Vol 13, No 5 (2024): September 2024 Vol 13, No 4 (2024): July 2024 Vol 13, No 3 (2024): May 2024 Vol 13, No 2 (2024): March 2024 Vol 13, No 1 (2024): January 2024 Vol 12, No 6 (2023): November 2023 Vol 12, No 5 (2023): September 2023 Vol 12, No 4 (2023): July 2023 Vol 12, No 3 (2023): May 2023 Vol 12, No 2 (2023): March 2023 Vol 12, No 1 (2023): January 2023 Vol 11, No 4 (2022): November 2022 Vol 11, No 3 (2022): August 2022 Vol 11, No 2 (2022): May 2022 Vol 11, No 1 (2022): February 2022 Vol 10, No 4 (2021): November 2021 Vol 10, No 3 (2021): August 2021 Vol 10, No 2 (2021): May 2021 Vol 10, No 1 (2021): February 2021 Vol 9, No 3 (2020): October 2020 Vol 9, No 2 (2020): July 2020 Vol 9, No 1 (2020): February 2020 Vol 8, No 3 (2019): October 2019 Vol 8, No 2 (2019): July 2019 Vol 8, No 1 (2019): February 2019 Vol 7, No 3 (2018): October 2018 Vol 7, No 2 (2018): July 2018 Vol 7, No 1 (2018): February 2018 Vol 6, No 3 (2017): October 2017 Vol 6, No 2 (2017): July 2017 Vol 6, No 1 (2017): February 2017 Vol 5, No 3 (2016): October 2016 Vol 5, No 2 (2016): July 2016 Vol 5, No 1 (2016): February 2016 Vol 4, No 3 (2015): October 2015 Vol 4, No 2 (2015): July 2015 Vol 4, No 1 (2015): February 2015 Vol 3, No 3 (2014): October 2014 Vol 3, No 2 (2014): July 2014 Vol 3, No 1 (2014): February 2014 Vol 2, No 3 (2013): October 2013 Vol 2, No 2 (2013): July 2013 Vol 2, No 1 (2013): February 2013 Vol 1, No 3 (2012): October 2012 Vol 1, No 2 (2012): July 2012 Vol 1, No 1 (2012): February 2012 More Issue