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The Concentration of Polyunsaturated Fatty Acid in Palm Oil by Urea Complexation Dwi Ardiana Setyawardhani; margono margono; Ardi Pratama; Fermanditya Petratama
Equilibrium Journal of Chemical Engineering Vol 2, No 1 (2018): Volume 2 No 1 January 2018
Publisher : Program studi Teknik Kimia UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/equilibrium.v2i1.40430

Abstract

Linoleic acid is a Poly-Unsaturated Fatty Acid (PUFA) that corresponds to Omega 6 Fatty Acid. This is the major component of vegetable oil and very important for health. As an essential fatty acid, linoleic acid has to be obtained from foods. Consumption of omega fatty acid in the form of concentrate has more benefit than the whole oil. Fulfilling this requirement, effective method to separate PUFAs from vegetable oils is needed. One of the favorable methods is urea complexation. Palm oil was used as the fatty acids resource due to its potential feedstock in Indonesia. This aim of this research is to study the effect of urea, ethanol and free fatty acid (FFA) ratios during complexation of palm oil. This research was developed in three steps, 1) free fatty acid preparation from palm oil (saponification process), 2) crystallization of the fatty acids mixture and 3) filtration for separating the unsaturated fatty acid. Concentrated linoleic acid is obtained in the liquid phase, while the saturated fatty acid is obtained in the solid. This research resulted that the concentration of PUFA was increasing as the ratio of urea, FFA and ethanol increases.
Organizing Material Programs to Improve the Character of Children at TPA Baitul Hikmah Abdul Haris Muchtar; Mariah; Risman Nugraha; Ardi Pratama; Ratunoor Nabila Zahra; Pamela Nawal Iman Fadhilla; Wirandi Saputra; Rizki Wandan Sitorus; Audy Putri Adinda; Ahmad Zaid Alvatir; Mushab Fathan Athali; Muhammad Nafis
SocietalServe: Journal of Community Engagement and Services Vol 1 No 1 (2024): Societal Serve: Journal of Community Engagement and Services
Publisher : Pusat Riset dan Inovasi Nasional Mabadi Iqtishad Al Islami

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70063/societalserve.v1i1.11

Abstract

This study aims to develop program materials focused on enhancing the character of children attending Baitul Hikmah TPA. It endeavors to contribute positively to the moral and ethical development of children within the TPA setting. The research methodology involves creating tailored program materials aimed at fostering character development while considering relevant moral and cultural values. Participants include children from the specified age group at Baitul Hikmah TPA. The program materials will adopt an interactive and creative approach to ensure active participation of the children in the learning process. Evaluation of the program will include participant observation, character assessments, and feedback from TPA parents and teachers. The research endeavors to provide fresh insights into the efficacy of program materials in enhancing the character of children within TPA. Furthermore, it aims to offer practical implications that could serve as a foundation for similar programs in comparable educational institutions, thereby extending the positive impact on character development within the realm of religious and moral education.
Kajian Elevasi Lahan terhadap Banjir di Perumahan The Arthera Hill 2 Bekasi Herol; Ardi Pratama; Ira Heranita
JOURNAL OF CIVIL ENGINEERING BUILDING AND TRANSPORTATION Vol. 10 No. 1 (2026): JCEBT MARET
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jcebt.v10i1.17721

Abstract

Banjir perkotaan merupakan permasalahan yang semakin meningkat akibat interaksi antara perubahan tata guna lahan, sistem drainase yang terbatas, dan karakteristik topografi. Salah satu faktor kunci yang memengaruhi kejadian banjir adalah elevasi lahan, terutama pada kawasan yang berada di dataran banjir (floodplain). Penelitian ini bertujuan untuk menganalisis pengaruh elevasi lahan dan karakteristik floodplain terhadap kejadian banjir di Perumahan The Arthera Hill 2, Kabupaten Bekasi. Metode yang digunakan adalah analisis deskriptif kuantitatif berbasis data Elevation Profile dari Google Earth Pro dengan pendekatan multi-transek, yang kemudian diinterpretasikan menggunakan konsep geomorfologi floodplain. Hasil penelitian menunjukkan bahwa kawasan memiliki elevasi dominan pada kisaran ±32–35 mdpl dengan kemiringan lahan rendah (<5%), serta berada pada area meander Kali Cikarang. Kondisi ini menyebabkan perbedaan tinggi antara muka air sungai dan kawasan permukiman sangat kecil sehingga aliran air tidak efektif dan cenderung menimbulkan genangan. Selain itu, pemanfaatan lahan pada zona floodplain yang seharusnya berfungsi sebagai ruang tampungan air alami telah menurunkan kapasitas hidrologi kawasan dan meningkatkan tinggi muka air banjir (surcharge). Disimpulkan bahwa kejadian banjir di lokasi penelitian dipengaruhi secara signifikan oleh kombinasi elevasi rendah, topografi datar, dan perubahan fungsi floodplain. Oleh karena itu, direkomendasikan agar perencanaan kawasan permukiman mempertimbangkan zonasi floodplain, pengendalian pemanfaatan ruang, serta penerapan sistem drainase dan retensi yang adaptif untuk mengurangi risiko banjir.