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All Journal Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat Catalyx : Journal of Process Chemistry and Technology
Ruchiyat
Universitas Garut
Agriculture, Biological Sciences & Forestry Chemistry

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Pelatihan Pembuatan Lotion Antinyamuk Berbasis Minyak Atsiri untuk Meningkatkan Pengetahuan Siswa SMAN 30 Garut Aika Latifah Alawiyah; Fajar Fauzi Abdullah; Ruchiyat; Farid Perdana; Isye Martiani; Jasminum Sambact; Rahma Mekar Muharram
Agrokreatif: Jurnal Ilmiah Pengabdian kepada Masyarakat Vol. 12 No. 2 (2026): Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/agrokreatif.12.2.367-375

Abstract

Mosquitoes are considered vectors responsible for dengue fever, malaria, and chikungunya. Applying anti-mosquito lotion is a precaution to avoid mosquito bites. Certain commercial items contain diethyltoluamide (DEET), which can be harmful to health and contaminate the environment when used for extended periods. Utilizing essential oils in a anti-mosquito lotion is more eco-friendly. This community service aimed to improve students’ understanding and ability to produce anti-mosquito lotion using essential oils. The training took place at SMAN 30 Garut, involving 35 students from classes X and XII. The training approach involves preparation; implementation (pre-test and post-test to evaluate participants’ knowledge levels, delivering material interactively, and practicing); and evaluating activities through satisfaction questionnaires. A paired t-test analysis of the pre-test and post-test results showed that a t-value of 3,25 with a p-value of 0,012 (< 0,05), indicating a significant improvement in the pupils’ knowledge of the subject matter and their skills in making mosquito-repellent lotion. The percentage of correct answers has increased from 68,57% (pre-test) to 86,35% (post-test). The results indicated that participants responded positively to the activities conducted. The results of the training showed an improvement in students’ understanding of the subjectand their ability to make anti-mosquito lotions. This activity not only provides insight into the use of natural products but also raises students’ interest in entrepreneurial oppoturnities and innovation within schools and the community.
Energy-Optimized Design of Multicomponent High-Purity Distillation: Comparative Evaluation of Conventional and Intensified Configurations Ruchiyat
Catalyx : Journal of Process Chemistry and Technology Vol. 2 No. 1 (2025): January 2025
Publisher : Indonesian Scientific Publication

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61978/catalyx.v2i1.1275

Abstract

This study presents a comparative assessment of energy-saving configurations for high-purity multicomponent distillation, focusing on conventional column sequences, Dividing-Wall Columns (DWCs), side utility integration, and heat-pump-assisted systems. The objective is to evaluate each configuration’s potential for energy reduction, economic feasibility, and operational robustness. A ternary system was analyzed using shortcut design (Fenske–Underwood–Gilliland), rigorous MESH simulation, and thermodynamic targeting via Column Grand Composite Curve (CGCC). Optimization parameters included reflux ratio, stage count, feed location, and pressure. Simulations revealed that DWCs and heat-pump configurations achieved energy savings of 35–40% compared to the conventional setup. Side utility integration and feed stage/reflux optimization provided moderate reductions of 10–18%. Thermodynamic targeting identified a pinch temperature of 8°C, confirming potential for further heat integration through side reboilers and condensers. Sensitivity analysis indicated that DWCs and heat-pump systems maintained stable product purity and energy performance under ±5% feed variation. While DWCs and heat-pump systems involve higher capital costs, long-term operational savings justify investment. Control and integration complexity were addressed through discussion of adaptive strategies and predictive control methodologies. These findings suggest that intensified distillation configurations significantly enhance process efficiency and offer viable pathways toward sustainable chemical separation.
Co-Authors Aika Latifah Alawiyah Fajar Fauzi Abdullah Isye Martiani Jasminum Sambact Perdana, Farid Rahma Mekar Muharram