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All Journal International Journal of Electrical and Computer Engineering Transmisi: Jurnal Ilmiah Teknik Elektro Jurnal Keteknikan Pertanian Rekayasa Mesin Turbo : Jurnal Program Studi Teknik Mesin JSI (Jurnal sistem Informasi) Universitas Suryadarma Teaching and Learning Journal of Mandalika (Teacher) Jurnal Sosial dan Teknologi Indonesian Journal of Engagement, Community Services, Empowerment and Development (IJECSED) Sinergi Polmed : Jurnal Ilmiah Teknik Mesin Journal of Scientech Research and Development Bhinneka Multidisiplin Journal Jurnal Karya untuk Masyarakat (JKuM) Science Get Journal
Rismen Sinambela
Universitas Kristen Indonesia
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Journal : Science Get Journal

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Using Biotechnology to Make Biofuels from Algae as Renewable Energy Rismen Sinambela; Ilham Samanlangi
Science Journal Get Press Vol 1 No 3 (2024): October, 2024
Publisher : CV. Get Press Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69855/science.v1i3.80

Abstract

According to research published in the Journal of Applied Phycology, algae have the ability to produce biofuels with five times higher energy efficiency compared to soybean plants, making it a highly efficient and sustainable option for renewable fuels. The goal of this research is to use biotechnology to create biofuels from algae as a renewable energy. This study used a laboratory experimental design with a quantitative approach. Population: Microalgae or green algae that have high potential in lipid production, such as Chlorella vulgaris or Spirulina platensis, which are commonly used in biofuel research. Sample: Several species of algae were selected to test their effectiveness as biofuels, including genetically engineered species and natural species as a comparison. The results of the ANOVA analysis showed significant differences in lipid levels between treatment groups. The results of the T/Post-hoc test confirmed that the genetically engineered species had higher lipid levels, supporting the efficiency of biofuels. The regression results showed a strong positive correlation (R² = 0.68), which supports other studies that found that microalgae can produce biomass in a relatively short time with a controlled environment, making it efficient for large-scale biofuel production. The conversion efficiency of lipids to biofuels reached 85.5%, indicating that the transesterification method used in this study is very effective in converting algae lipids to biodiesel. The use of biotechnology in the production of biofuels from algae has great potential as an efficient and sustainable renewable energy source.
Mass Spectrometry-Based Purity Assessment of Hydrogen from Different Production Pathways: Compliance Evaluation with ISO 14687:2019 Standards Rismen Sinambela
Science Journal Get Press Vol 2 No 4 (2025): October, 2025
Publisher : CV. Get Press Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69855/science.v2i4.272

Abstract

The global transition toward low-carbon energy has positioned hydrogen (H₂) as a key renewable fuel, particularly for applications in fuel cells that require ultra-high purity. Ensuring hydrogen quality is essential to prevent catalyst poisoning and system degradation, as defined in ISO 14687:2019 standards. This study presents a simulation-based analysis of hydrogen purity using a Gas Chromatography–Mass Spectrometry (GC–MS) modeling approach to evaluate three production pathways: green hydrogen (from electrolysis), grey hydrogen (from steam methane reforming), and a fuel cell–grade feedstock.The simulation predicts impurity profiles such as O₂, N₂, CO, CO₂, CH₄, sulfur compounds, and water vapor, comparing each with ISO threshold limits. Results indicate that green hydrogen generally complies with ISO standards, while grey hydrogen exceeds CO₂ and sulfur limits. The fuel cell–grade sample shows near-complete conformity due to simulated purification processes such as pressure swing adsorption.These findings highlight that analytical modeling can effectively predict hydrogen quality and compliance potential across different production routes. The study emphasizes that advancing hydrogen technology requires not only cleaner production methods but also reliable analytical simulations to support quality assurance and sustainability in future hydrogen economies.
Co-Authors Aidil, Muhamad Aldul Rahman Anifatul Faricha Anton Supriadi Wibowo Denis Denis Flourentina Dwiindah Pusparini Fuad, Ahsanul Gani, Alcianno G Gema Parasti Mindara Ilham Samanlangi Inna Novianty Ito Khikmatulloh Leonard Lisapaly Martua Manik Muryan Awaludin Nadeak, David Ryanto Nadeak, Omsar Rudyanto Nanda, Muhammad Achirul Nurulhaq, Muhammad Iqbal Pradeka Brilyan Purwandoko Purba, Herianto A S Retno Indriyati K. Serepina Tiur Maida Sholihah, Walidatush Simanjuntak, Suganda P Sinambela, Pahala Sitinah, Sitinah Sitti Wardiningsih Sitti Wardiningsih Taran, Nober Tateng Sukendar Widiarto, Indra Yosep Hendriyana Zulkarnaini, Andri