cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
-
Contact Email
-
Phone
-
Journal Mail Official
-
Editorial Address
-
Location
Kab. ogan ilir,
Sumatera selatan
INDONESIA
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)
Published by Universitas Sriwijaya
ISSN : 25409395     EISSN : 25409409     DOI : -
Core Subject : Science, Social,
Biochemistry, Genetics & Molecular Biology Chemistry Environmental Science
Indonesian Journal of Fundamental and Applied Chemistry (IJFAC) is an international research journal and invites contributions of original research articles as well as review articles in several areas of chemistry. The journal aims to publish refereed, high-quality research papers with significant novelty and short communications in all branches of chemistry. Papers which describe novel theory and its application to practice are welcome, as are those which illustrate the transfer of techniques from other disciplines. IJFAC calls for papers that cover the following fields: Biochemistry Inorganic chemistry Physical chemistry Organic chemistry Analytical chemistry Applied Chemistry All papers are peer reviewed by at least two referees. Papers presented at conferences are peer reviewed and selected with the same standards as individually submitted papers. They therefore have the same archival value. Article should be submitted by the Online Submission Module at www.ijfac.unsri.ac.id or email to ijfac@unsri.ac.id
Arjuna Subject : -
Articles 9 Documents
 1 
Search results for , issue "Vol 11, No 1 (2026): February 2026" : 9 Documents clear
Stoichiometric Combustion Modeling and Regulatory Compliance Assessment of Indonesian Sub-bituminous Coal: Implications for Clean Coal Technology Deployment Purba, Robekca; Utami, Nyimas Ulfatry
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 11, No 1 (2026): February 2026
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v11.i1.59

Abstract

Coal is an important energy source, but its utilization must consider quality and environmental aspects for sustainability. This study aims to characterize coal from Muara Enim Regency and to evaluate its energy utilization potential. A 2.365 kg coal sample was analyzed at Geoservice laboratory, Bandung. Proximate analysis results showed total moisture 6.26%, ash content 10.63%, volatile matter 37.84%, and fixed carbon 47.71%. Ultimate analysis revealed carbon 68.56%, hydrogen 5.12%, nitrogen 1.42%, oxygen 13.71%, and sulfur 0.56%. The calorific value is 6,900 kcal/kg with fuel ratio 1.26. These parameters classify the coal as Sub-bituminous B with good combustion characteristics. Stoichiometric calculations determined theoretical air requirements of 2.24 kg/kg coal, producing 2.51 kg CO₂, 0.46 kg H₂O, 0.0009333 kg NO2 and 0.0112 kg SO₂. Theoretical SO₂ emissions (1.557 mg/Nm³) exceed Indonesian regulations, requiring Flue Gas Desulfurization (FGD) installation. The coal has good energy potential with low sulfur content, suitable for power generation with proper emission control technology. This study provides a database for optimizing energy systems and clean coal technologies..Keywords: coal characterization; calorific value; combustion stoichiometry; clean coal technology, coal chemistry
Modified Polystyrene Waste as Cation Exchange Material and Its Characterization Nendo, Felicia Febyola; Sutanto, Teja Dwi; Banon, Charles; Angasa, Eka; Gustian, Irfan
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 11, No 1 (2026): February 2026
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v11.i1.67

Abstract

Modification of polystyrene (PS) waste into sulfonated polystyrene (PSS) as cation exchange material and its characterization has been carried out, the polystyrene waste used is styrofoam from air conditioner packaging. Modification is carried out through the sulfonation process of styrofoam using acetyl sulfate as a sulfonating agent in tetrahydrofuran (THF) solution. Sulfonation is carried out at a temperature of 40 °C for 3.5 hours under nitrogen gas flow. The modified product is then characterized using FTIR, SEM, and testing the degree of sulfonation, water absorption capacity, and cation exchange capacity (CEC). The results show that modification has occurred in the presence of a sulfonate group (–SO₃H) which is characterized by the appearance of characteristic peaks of 1033 cm⁻¹, 1162 cm⁻¹ and 3329 cm⁻¹ in the FTIR spectrum and SEM results show that the PS structure which is not rough and becomes a rougher and non-uniform structure after sulfonation. The degree of sulfonation obtained reached 58%, the maximum water absorption achieved was 39% after soaking for 72 hours, and the highest measured cation exchange capacity was 1.87 meq/g in 1.5 N NaCl solution. These results indicate that styrofoam waste has the potential to be used as a basic material for efficient and environmentally friendly cation exchange resins.Keywords: Polystyrene, Sulfonation, Acetyl sulfate, Cation exchange capacity, Activation energy
Development of the Fruit Peels of Rambutan (Nephelium lappaceum L.) into Herbal Tea Julinar, Julinar; Ananda, Dea; Huzaifah, Huzaifah; Musifa, Eva; Muharni, Muharni
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 11, No 1 (2026): February 2026
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v11.i1.18

Abstract

Rambutan (Nephelium lappaceum) peel contains various bioactive compounds, including phenolics, flavonoids, and ellagic acid, which function as antioxidants. Antioxidants are compounds needed to inhibit radical reactions and oxidation processes that trigger various diseases. This study aims to determine the potential of rambutan peel to become a herbal tea. The study began with the determination of total phenolic and flavonoid levels in aqueous extracts of rambutan peel, followed by antioxidant activity assessment using the DPPH and FRAP methods. As a comparison, tea from tea leaves (Camellia sinensis) and herbal teas from kelor (Moringa oleifera) leaves and senduduk (Melastoma malabathricum L) leaves were used. The results showed that the aqueous extract of rambutan peel had a total phenolic content of 344.07 mg GAE/g and a flavonoid content of 7.96 mg QE/g, higher than those of tea leaves, kelor leaves, and senduduk leaves. Antioxidant activity test using the DPPH method showed that rambutan peel aqueous extract is an active antioxidant with an IC₅₀ of 0.797 µg/mL, with antioxidant activity 5.45 times stronger than tea leaves, 10.33 times stronger than moringa leaves, and 4.32 times stronger than senduduk leaves. Antioxidant test using the FRAP method also showed that the antioxidant capacity of rambutan peel water extract is 29.66 mgTE/g, higher than those of tea leaves, kelor leaves, and senduduk leaves, with values of 19.84 mgTE/g, 6.12 mgTE/g, and 14.52 mgTE/g, respectively. These data indicate that rambutan peel has strong antioxidant activity and has the potential to be developed as a herbal tea.Keywords: Nephelium lappaceum peel, antioxidants, herbal tea, DPPH, FRAP
Hydrogen Applications and Solid-State Storage Materials: A Critical Review of Mechanisms, Material Innovations, and Prospects Toward Practical Hydrogen Energy Systems Amelia, Icha; Rohendi, Dedi; Nurcholifah, Yollanda
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 11, No 1 (2026): February 2026
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v11.i1.76

Abstract

Hydrogen has significant potential as a clean energy carrier to support the transition toward sustainable energy systems. However, the widespread implementation of a hydrogen economy is still limited by challenges associated with safe, efficient, and high-capacity hydrogen storage technologies. In general, hydrogen storage systems are classified into physical storage, chemical storage, and solid-state storage. This review article systematically discusses various hydrogen storage technologies, with a particular focus on solid-state hydrogen storage, including metal hydrides, complex hydrides such as alanates, and chemical hydrides encompassing borohydrides and liquid organic hydrides. Each class of materials is evaluated in terms of storage capacity, thermodynamic and kinetic characteristics, as well as issues related to reversibility and regeneration. The review highlights that, despite considerable progress, no single hydrogen storage system currently satisfies all practical requirements. Therefore, a fundamental understanding of hydrogen–material interactions, along with material design and catalytic strategies, is essential for advancing hydrogen storage technologies toward practical applications.Keywords: Hydrogen storage; Solid-state hydrogen storage; Metal hydrides; Chemical hydrides; Thermodynamic and kinetic properties
Synthesis, Characterization and Antibacterial Activity of Rice Husk Biochar/MnFe2O4 Nanocomposites Afrizki, Oka Yana; Hariani, Poedji Loekitowati; Aprianti, Nabila
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 11, No 1 (2026): February 2026
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v11.i1.48

Abstract

The increasing contamination with microorganisms has driven the development of effective, environmentally friendly antibacterial materials. Biochar was used as a porous matrix to support the dispersion of MnFe₂O₄ particles and to enhance the material's surface area. This study aims to synthesize a rice husk–based biochar/MnFe₂O₄ composite and evaluate its structural and morphological characteristics, as well as antibacterial activity. The composite was synthesized by coprecipitation and characterized by X-ray Diffraction (XRD), Scanning Electron Microscopy–Energy Dispersive X-ray Spectroscopy (SEM–EDX), and Fourier Transform Infrared Spectroscopy (FTIR). Antibacterial activity was evaluated using the disk diffusion method against Escherichia coli (Gram-negative) and Staphylococcus aureus (Gram-positive) at concentration variations of 1000–5000 mg/L. XRD results confirmed the formation of a spinel MnFe₂O₄ phase, as indicated high-intensity diffraction peaks   at 31.56° and 35.22° and the average crystallite size calculated using the Scherrer equation was approximately 27.1 nm, indicating the formation of nanocrystalline domains. SEM analysis revealed that MnFe₂O₄ nanoparticles were uniformly dispersed on the biochar surface, while EDX confirmed the presence of C, O, Mn, and Fe elements. FTIR analysis identified –OH, C=O, and C–O functional groups, along with characteristic Mn–O and Fe–O vibrations, confirming successful composite formation. Antibacterial activity increased with concentration, reaching a maximum inhibition zone of 7.2 mm against both E. coli and S. aureus at 5000 mg/L, indicating mild antibacterial performance. The composite exhibits eco-friendly characteristics due to its biomass-derived biochar matrix and offers magnetic separability, facilitating easy recovery and potential reuse for sustainable environmental applications.Keywords: Rice husk biochar, MnFe₂O₄, antibacterial activity
Integrated Coagulation-Adsorption-Filtration-Ceramic Membrane System for the Treatment of Songket Dyeing Wastewater Rinaldi, Rizki; Said, Muhammad; Desnelli, Desnelli
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 11, No 1 (2026): February 2026
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v11.i1.41

Abstract

This study investigated an integrated treatment system combining coagulation, adsorption, filtration, and ceramic membrane processes for songket dyeing wastewater. Textile wastewater is characterized by high color intensity, suspended solids, and organic loads, which can cause serious environmental impacts if discharged without adequate treatment. Coagulation using aluminum sulfate effectively destabilizes colloidal particles, followed by adsorption with activated carbon to remove dissolved dyes and organic compounds. Multimedia filtration and ceramic membrane filtration further enhance pollutant removal through physical separation mechanisms. The integrated system successfully achieved color reduction from 976.5 Pt-Co to 10.6 Pt-Co, TSS reduction exceeding 98%, and COD reduction above 93%, in accordance with Indonesian wastewater discharge standards for the textile industry (KLHK, 2016).Keywords: Songket Wastewater, Coagulation, Adsorption, Filtration, Ceramic Membrane
Formulation and Evaluation of Typhonium flagelliforme Tuber Extract Tablets with Cytotoxic Activity Against MCF-7 Breast Cancer Cells Komarudin, Dede; Adriana, Yulis
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 11, No 1 (2026): February 2026
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v11.i1.1

Abstract

Cancer is the leading cause of death. Data from the Global Cancer Observatory shows that in 2022, Breast cancer in women ranks second and is the leading cause of death. Because of the limited cancer treatments available, medicinal plants are an alternative because they have anticancer properties. The indigenous Indonesian medicinal plant Typhonium flagelliforme has been widely used in various studies for its potential as an anticancer. Currently, medicinal plants are generally used in capsules, which are more sensitive to moisture and temperature that can affect drug stability compared to tablets. The aim of this research was to produce tablets containing active extract from Typhonium flagelliforme that meet physical quality requirements as anti-breast cancer tablets with cytotoxic activity against MCF-7. The research method is in vitro test of cytotoxic activity against MCF-7 cells. The results of the research   show that ethanol extract from Typhonium flagelliforme tubers can be formulated into tablets that have potential as a breast cancer treatment. Ethanol extract is the most active extract with an IC50 value of 16.04 µg/mL in MCF-7 cells. The physical parameters extract granules from Formulas 1 to 3 meet the requirements. The physical parameters of tablets in Formulas 1 to 3 meet the requirements, but the disintegration time of Formula 3 tablets does not meet the requirements.Keywords: Breast cancer, MCF-7, Tablet, Typhonium flagelliforme, Physical parameters of the tablet
Modification of CaO from Scallops (Amusium Pleuronectes) with Fe3O4 and SiO2 for Adsorption of Congo Red and Methylene Blue Dye Sari, Fera Rahma; Purwaningrum, Widia; Rachmat, Addy
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 11, No 1 (2026): February 2026
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v11.i1.26

Abstract

Congo Red and Methylene Blue dye waste from the textile industry needs to be treated before being discharged into water bodies. Adsorption is widely recognized as an effective method of contaminant removal. The use of CaO as an adsorbent has the advantages of high kinetic speed, efficient, low cost, easily accessible, and abundant. To improve the performance of CaO, it is done by compositing CaO with Fe3O4 and SiO2. This study aims to synthesize a CaO/Fe3O4/SiO2 and apply it for the adsorption of Congo red and Methylene blue dyes. The synthesis of CaO/Fe3O4 uses the coprecipitation method and CaO/Fe3O4/SiO2 is synthesized using the Stober method by adding TEOS to CaO/Fe3O4. The results of XRD characterization show that the synthesized CaO, CaO/Fe3O4, and CaO/Fe3O4/SiO2 have the same 2θ angle as the reference diffractogram data. The addition of SiO2 was shown to prevent agglomeration, which was indicated by a decrease in the particle size of CaO/Fe3O4 from 70.07 to 52.42 nm in CaO/Fe3O4/SiO2. % Adsorption efficiency for Congo Red was 86.49% Methylene Blue was 99.12%. The adsorption process of both dyes was spontaneous, following a pseudo-second-order kinetic model. Congo Red adsorption followed the Freundlich isotherm model, while Methylene Blue followed the Langmuir isotherm model.Keywords: CaO/Fe3O4/SiO2, adsorption, Congo red, Methylene blue
Development and Characterization of HDPE Waste/Ramie Fiber Composites for Geomembrane Applications in Litopenaeus vannamei Shrimp Cultivation Fikri, Ahmad; Razi, Ar; Mainisa, Mainisa; Fadhilah, Arif; Mila, Apryza
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 11, No 1 (2026): February 2026
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v11.i1.10

Abstract

Geomembranes are thin geosynthetic materials composed of polymeric layers that function as barriers in direct contact with soil. The properties of HDPE geomembranes suitable for application as vannamei shrimp (Litopenaeus vannamei) aquaculture. HDPE geomembranes applied in vannamei shrimp aquaculture are subjected to thermal loads (UV radiation), oxidative agents, and mechanical force such as interfacial friction and tensile loading in surface wear.  This study aims to improve the mechanical properties of the material by incorporating natural fibers as reinforcement into HDPE–ramie fiber biocomposite. The process of making HDPE–ramie fiber biocomposite uses an single screw extruder with a temperature of 170 oC, a rotation of 20 rpm with a ratio of HDPE waste and ramie fiber of 97.5:2.5, 95:5, and 92.5:7.5. The results of tensile and impact tests show the highest strength and toughness are shown in the HDPE sample and ramie fiber 92.5:7.5 with a value of 5.23 MPa and 96.17 kJ/m2. The highest material ductility was demonstrated in the HDPE and ramie fiber composite 97.5:2.5 with a value of 1.32%. In addition, the highest stiffness was demonstrated in the HDPE and ramie fiber composite 95:5 with a value of 845.40 MPa. The results of the morphological investigation showed that the bond between the matrix and filler was partially formed and the smallest fiber diameter was 4 µm.Keywords: HDPE, Ramie, Composite, Geomembrane, Vanamei

Page 1 of 1 | Total Record : 9

 1 

Filter by Year

2026 2026


Reset
Filter By Issues
All Issue Vol 11, No 1 (2026): February 2026 Vol 10, No 3 (2025): October 2025 Vol 10, No 2 (2025): June 2025 Vol 10, No 1 (2025): February 2025 Vol 9, No 3 (2024): October 2024 Vol 9, No 2 (2024): June 2024 Vol 9, No 1 (2024): February 2024 Vol 8, No 3 (2023): October 2023 Vol 8, No 2 (2023): June 2023 Vol 8, No 1 (2023): February 2023 Vol 7, No 3 (2022): October 2022 Vol 7, No 2 (2022): June 2022 Vol 7, No 1 (2022): February 2022 Vol 6, No 3 (2021): October 2021 Vol 6, No 2 (2021): June 2021 Vol 6, No 1 (2021): February 2021 Vol 5, No 3 (2020): October 2020 Vol 5, No 2 (2020): June 2020 Vol 5, No 1 (2020): February 2020 Vol 4, No 3 (2019): October 2019 Vol 4, No 2 (2019): June 2019 Vol 4, No 1 (2019): February 2019 Vol 3, No 3 (2018): October 2018 Vol 3, No 2 (2018): June 2018 Vol 3, No 1 (2018): February 2018 Vol 2, No 3 (2017): October 2017 Vol 2, No 2 (2017): June 2017 Vol 2, No 1 (2017): February 2017 Vol 1, No 3 (2016): October 2016 Vol 1, No 2 (2016): June 2016 Vol 1, No 1 (2016): February 2016 More Issue