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Science Get Journal
Published by CV. Get Press Indonesia
ISSN : -     EISSN : 30626595     DOI :  http://doi.org/10.69855/science
Core Subject : Science, Education,
Biochemistry, Genetics & Molecular Biology Chemistry Mathematics Physics
A Peer Reviewed Research Science Get Journal e-ISSN: 3062-6595 Science Get Journal is an Open Access and Anonymous Reviewer/Anonymous Author journal. The field of Science is a vehicle for scientific communication in the field of Science which covers the cross-fields of Mathematics, Physics, Chemistry, Biology, Geography and Mathematics,  Natural Sciences Education and Social Sciences. Science Get Journal is published by Get Press Indonesia. Science Get Journal is used to publish research published every month January, April, July, and October. The Science Get Journal template can be downloaded here (Click). Information about article submission: Articles sent by the author (author) will be seen and read by the editor, if there are still discrepancies with the applicable template and do not comply with the scope of Science Get Journal then the article will be returned to the author. If it is appropriate, the article will be forwarded to the Science Get Journal reviewer for a review process carried out by the Science Get Journal reviewer. A total of two reviewers within a two week period of evaluating the article.
Arjuna Subject : Matematika - Matematika (Lain-Lain)
Articles 37 Documents
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Fabrication of Hydrophobic Graphene-Cellulose Composite Paper Using Rice Husk Ash Silica Sariwahyuni; Herlina Rahim; Hanim Istatik Badi'ah; Andi Haslinah; Mega Fia Lestari
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.v2i4.233

Abstract

This study presents the fabrication and characterization of a sustainable graphene–cellulose composite paper reinforced with rice husk ash (RHA)–derived amorphous silica. Silica was extracted via alkaline leaching–acid precipitation, yielding a porous, high-purity amorphous phase well-suited for reinforcement. Composite papers were prepared by incorporating varying loadings of graphene nanoplatelets (0.5–2 wt%) and silica (5–15 wt%) into cellulose pulp, followed by ultrasonication, vacuum filtration, and hot pressing. Structural and morphological analyses (FTIR, XRD, SEM) confirmed effective dispersion and strong filler–matrix interactions. The incorporation of graphene and silica significantly enhanced surface hydrophobicity, raising the water contact angle from 62.5° for neat cellulose to 152.7°—indicative of a near-superhydrophobic state. Mechanical testing revealed an optimal formulation (1 wt% graphene + 10 wt% silica) that improved tensile strength by 42% and Young’s modulus by 36% compared to neat cellulose. Higher filler concentrations slightly reduced tensile strength due to filler agglomeration. This work demonstrates a valorization pathway for low-cost agricultural residues to produce eco-friendly composite materials with superior mechanical and surface properties, suitable for applications in packaging, filtration, or protective coatings.
Box-Behnken Design Optimization Process of Electrospinning for Fabrication PLA/PVA Nanofibers Yadi Mulyadi Rohman; Dendin Supriadi
Science Journal Get Press Vol 2 No 3 (2025): July, 2025
Publisher : CV. Get Press Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69855/science.v2i3.270

Abstract

The optimization of PLA/PVA nanofibers has been successfully performed using the Box-Behnken design method to produce nanofibers with small diameters. The fabrication process of the nanofibers was conducted using electrospinning. The electrospinning process parameters included PLA solution concentration, voltage, and flow rate. The optimal conditions for producing the nanofibers were found in sample N1, with variations of PLA solution at 9%, voltage at 14 kV, and flow rate at 16 kV, resulting in small and uniform nanofibers. The smallest fiber diameter achieved was 152.67 nm, which is quite close to the Box-Behnken predicted value of 144.45 nm. Statistical testing was conducted using analysis of variance (ANOVA), which indicated a p-value greater than 0.03 for the effect of the flow rate. This demonstrates that the flow rate has a significant influence on the diameter size. These results indicate that the Box-Behnken design can be an important tool for optimizing processes in electrospinning.
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.
Effects of Fermentation Time and Brix on the Physicochemical Characteristics of Red Ginger Enriched Pineapple Honey Fermentate Bagus, Imanuel; Hutapea, Henny Parida; Ambarwati, Septiana
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.v2i4.273

Abstract

Pineapple is a local Indonesian fruit with limited processing applications. Developing a fermented herbal from pineapple with red ginger represent a potential product innovation to increase its value. This study aimed to determine the best formulation of pineapple-honey herbal fermentation with the addition of red ginger at different °Brix levels (20 and 30) and fermentation durations (2 and 4 weeks). Physicochemical and organoleptic characteristics were evaluated, including turbidity, °Brix, pH, ethanol content, vitamin C, and total soluble solids. Data were analyzed using one-way ANOVA and the Kruskal–Wallis test. The results showed that the addition of red ginger significantly affected turbidity, °Brix, vitamin C, and total soluble solids, but did not significantly affect pH and ethanol content. The best formulation based on organoleptic evaluation was obtained in samples fermented for 4 weeks at 30 °Brix. Overall, this study indicates that red ginger enrichment and fermentation parameters play an important role in improving the quality and sensory acceptability of pineapple-honey herbal fermentate.
Determination of Glucose Solution Concentration Using Arduino-Based System Herbert Innah; Maniur Arianto Siahaan
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.v2i4.274

Abstract

Glucose is one of the most important biomolecules, playing a critical role in biological systems, food products, and clinical diagnostics. Conventional methods for glucose concentration measurement, such as spectrophotometry and enzymatic assays, although accurate, are often costly, time-consuming, and require skilled personnel. This study presents the development of a low-cost Arduino-based optical detection system for measuring glucose concentration using RGB LEDs as light sources and a photodiode sensor as the detector. The Arduino microcontroller processes voltage signals corresponding to light intensity and calculates absorbance values based on Beer-Lambert’s law. Calibration was performed using glucose solutions of varying concentrations, and the results indicated that the red LED source provided the most accurate and stable absorbance readings, with an average relative error below 5%. The proposed system offers an affordable, portable, and reliable alternative to conventional spectrophotometers, making it suitable for educational laboratories, small-scale food industries, and preliminary biomedical testing. Its implementation demonstrates the potential of microcontroller-based systems in enhancing accessibility to analytical tools in resource-limited environments.
Synthesis of Cellulose-Based Nanomaterials Agricultural Waste for Heavy Metal Adsorption in Water Applications Suhdi; Setiarto Pratigto
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.v2i4.275

Abstract

Heavy metal contamination in aquatic systems drives the need for sustainable and high-performance adsorbents. This study developed functionalized nanocellulose materials derived from rice husk waste for efficient removal of Pb(II), Cd(II), Cu(II), and Cr(VI) from aqueous solutions. Cellulose nanocrystals (CNCs) were synthesized via sulfuric acid hydrolysis and functionalized through TEMPO-mediated oxidation to introduce carboxyl groups, while cellulose nanofibrils (CNFs) were modified by ethylenediamine grafting to incorporate amine functionalities. Characterization using FTIR, XRD, and SEM confirmed successful surface modification, reduced crystallinity, and the presence of nanoscale fibrillar morphologies. Batch adsorption studies showed that CNC-TEMPO achieved a maximum adsorption capacity of 189.5 mg/g for Pb(II) and 112.3 mg/g for Cd(II) at pH 5–6, while CNF-Amine exhibited superior performance for Cr(VI) removal with a capacity of 205.5 mg/g at pH 3–4. Kinetic analysis followed a pseudo-second-order model (R² > 0.99), indicating chemisorption as the dominant mechanism, whereas isotherm fitting with the Langmuir model (R² > 0.98) confirmed monolayer adsorption. The enhanced adsorption capacity was attributed to electrostatic interactions and surface complexation between functional groups (–COO⁻, –NH₂) and metal ions. These findings highlight that rice husk–derived, surface-modified nanocellulose provides a low-cost, eco-friendly, and efficient alternative for heavy metal remediation and sustainable wastewater treatment applications.
Utilization of Natural Adsorbents (Rice Husk, Charcoal) in Drinking Water Treatment to Reduce Heavy Metal and Microorganism Content Lieza Corsita
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.v2i4.276

Abstract

Access to clean drinking water is a fundamental human right, yet millions face contamination from heavy metals and pathogens. This study evaluated the efficacy of natural adsorbents raw rice husk (RH), rice husk ash (RHA), and activated carbon (AC) for treating contaminated water. The adsorbents were prepared, characterized, and tested in batch experiments. Characterization via SEM, FTIR, and BET revealed that activation significantly enhanced properties; AC exhibited the highest surface area (732.5 m²/g) and porosity, followed by RHA and RH. Under optimized conditions (pH 6-7, dosage 2 g/L, contact time 60 min), AC demonstrated superior removal efficiencies for Pb²⁺ (92.6%), As³⁺ (88.4%), and F⁻ (75.1%). Adsorption data best fit the Langmuir isotherm and pseudo-second-order kinetic model, indicating monolayer chemisorption. However, microbial removal was limited (<30% for E. coli), underscoring the need for complementary disinfection. Regeneration studies showed AC maintained >80% efficiency after three cycles. The findings confirm that activated carbon is highly effective, while rice husk ash is a viable low-cost alternative for heavy metal and fluoride removal. For comprehensive water safety, integrating these adsorbents into hybrid treatment systems is recommended.

Page 4 of 4 | Total Record : 37

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