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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 212 Documents
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Synthesis and Characterization of Durian Peel Activated Carbon with Phosphoric Acid Activation for Direct Red 80 Adsorption Gabri Ela Monica; Desnelli Desnelli; Ady Mara
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 11, No 2 (2026): June 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.i2.92

Abstract

This study aimed to synthesize, characterize, and evaluate the adsorption performance of H3PO4-activated carbon derived from durian peel for the removal of Direct Red 80. Durian peel was carbonized in a 750 W microwave oven for three heating cycles of 15 min each with 30 min cooling intervals and then activated using H3PO4 solutions at concentrations of 0.3, 0.4, and 0.5 M. Characterization was performed using Fourier Transform Infrared Spectroscopy (FTIR), X-Ray Diffraction (XRD), and analyses of moisture content, ash content, iodine adsorption capacity, methylene blue adsorption, and surface area determined based on the methylene blue adsorption method. FTIR analysis revealed the presence of O–H, aromatic C=C, and phosphate functional groups, while XRD indicated a predominantly amorphous carbon structure. Activation with 0.5 M H3PO4 produced activated carbon with the best characteristics, including a moisture content of 6.19%, ash content of 3.16%, iodine adsorption capacity of 1192.86 mg/g, exceeding the minimum requirement of SNI 06-3730-1995 (750 mg/g), and a surface area of 71.844 m2/g determined by the methylene blue adsorption method. Adsorption was performed using 0.1 g adsorbent in 50 mL Direct Red 80 solution at 100 rpm. The optimum values obtained for the investigated parameters were pH 2, a contact time of 30 min, and an initial concentration of 30 ppm, with corresponding adsorption efficiencies of 66.72%, 66.72%, and 68.41%, respectively. The adsorption kinetics followed the pseudo-second-order model (R^2 = 0.9916), while the Langmuir model provided the best fit (R^2 = 0.9713). H3PO4-activated durian peel carbon shows potential as a biomass-based adsorbent for textile wastewater treatment.Keywords: Activated carbon, Durian peel, Phosphoric acid, Direct Red 80, Adsorption
The Odor Value Approach to Aroma Contribution Analysis and Aroma Mapping: A Systematic Review Salma Aulia Zahra; Asep Kadarohman
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 11, No 2 (2026): June 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.i2.157

Abstract

Aroma is a complex matrix consisting hundreds of volatile compounds, so there are challenges in understanding aroma characteristics and their mapping. There is an approach called odor value that connects chemical information with sensory perception and provides a visual tool for aroma mapping. However, literature studies of Odor Value are rare. This study aims to review the principle of odor value in aroma contribution analysis and how it can be integrated with the Perfumery Ternary Diagram for aroma mapping. The article selection method used the PRISMA guideline with the keywords odor value and aroma analysis published from 2005-2025 in the ScienceDirect database and obtained 10 articles that met the criteria. This method can provide initial understanding and map the scope of the available literature. From the review results, it is known that odor value is influenced by the concentration of compounds in the headspace, aroma threshold values, activity coefficients, and molecular interactions. In addition, the integration of odor value into the Perfume Ternary Diagram plays a direct role in determining the aroma mapping pattern so that it can provide information about aroma dominance, component diffusion in the matrix, and the influence of solvents in the matrix.Keywords: Odor Value, Perfumery Ternary Diagram, Aroma Analysis, Aroma Contribution, Aroma Mapping

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