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All Journal Sarwahita : Jurnal Pengabdian Kepada Masyarakat Equilibrium Journal of Chemical Engineering TEKAD : Teknik Mengabdi
Fauziyah, Mar’atul
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Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Education Energy Engineering Environmental Science Materials Science & Nanotechnology Social Sciences Other

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Integrasi Proses Sentrifugasi-Elektrokoagulasi sebagai Inovasi Pemurnian Biodiesel Minyak Jelantah bagi Siswa Fauziyah, Mar’atul; Kartikowati, Christina Wahyu; Puspitasari, Diah Agustina; Hidayati, A.S. Dwi Saptati Nur; Juliananda, Juliananda; Yulaichah, Siti
Bahasa Indonesia Vol 22 No 03 (2025): Sarwahita : Jurnal Pengabdian Kepada Masyarakat
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/sarwahita.223.7

Abstract

The utilization of waste cooking oil as a biodiesel feedstock provides a dual benefit, reducing household waste and offering an alternative renewable energy sources. However, biodiesel produced from waste cooking oil via transesterification often contains impurities such as glycerol, soap, and residual catalyst, which can degrade its quality. This community service activity aimed to introduce an innovative biodiesel purification method by integrating centrifugation and electrocoagulation processes to students of the Industrial Chemical Engineering program at SMK Muhammadiyah 1 Kepanjen. Centrifugation was employed to accelerate the separation of biodiesel and glycerol phases, while electrocoagulation effectively and efficiently precipitated dissolved impurities. This integrated process produced a shorter purification time up to 60% faster compared to conventional wet and dry washing methods and resulted in a clearer and more stable biodiesel product. The training was conducted through hands-on laboratory sessions, actively involving students in material preparation, equipment operation, and result evaluation. The learning outcomes showed a significant improvement, with the average student score increasing up to 63%. Furthermore, the program provided added value for the partner school by increasing students’ knowledge of renewable energy, improving their skills in operating laboratory equipment, and offering a project-based learning experience that supports the vocational curriculum. This activity demonstrates a tangible contribution to strengthening vocational competencies and presents a purification approach with strong potential for replication in other vocational schools.   Abstrak Pemanfaatan minyak jelantah sebagai bahan baku biodiesel merupakan salah satu solusi pengelolaan limbah rumah tangga sekaligus sebagai alternatif energi terbarukan. Namun, biodiesel hasil transesterifikasi minyak jelantah ini seringkali mengandung banyak pengotor berupa gliserol, sabun, dan sisa katalis yang dapat menurunkan kualitas biodiesel. Kegiatan pengabdian kepada masyarakat ini bertujuan untuk memperkenalkan inovasi pemurnian biodiesel melalui integrasi proses sentrifugasi dan elektrokoagulasi kepada siswa keahlian teknik kimia industri di SMK Muhammadiyah 1 Kepanjen. Proses sentrifugasi dilakukan guna mempercepat pemisahan fase biodiesel dan gliserol, sedangkan elektrokoagulasi untuk mengendapkan pengotor terlarut secara lebih efektif dan efisien. Hasil kegiatan menunjukkan bahwa penggunaan metode ini mampu menurunkan waktu pemurnian hingga 60% dibandingkan metode wet dan dry washing konvensional, serta menghasilkan biodiesel yang lebih jernih dengan tingkat kestabilan fase yang lebih baik. Pelatihan dilakukan secara praktik di laboratorium SMK dengan melibatkan siswa secara aktif dalam persiapan bahan, pengoperasian alat, dan evaluasi hasil, sehingga rata-rata nilai pemahaman siswa meningkat 63% setelah pelatihan. Kegiatan ini memberikan manfaat nyata bagi mitra, berupa peningkatan pengetahuan tentang energi terbarukan, keterampilan laboratorium, dan pengalaman pembelajaran berbasis proyek yang relevan dengan kebutuhan industri. Metode pemurnian terintegrasi ini juga berpotensi direplikasi di sekolah kejuruan lain sebagai model pembelajaran vokasi berbasis teknologi terapan.
Introduction of Antosianin Extraction from Telang Flower in Vocation School Student Agustina Puspitasari, Diah; Fauziyah, Mar’atul; Bambang Poerwadi; Christina Wahyu Kartikowati; Supriyono; Oktavian, Rama; Dewi, Laura alvina; Saputra, Qoiru Ramanda; Taqwa, Abiyyu Nabil; Nengseh, Evi Sulviani
TEKAD : Teknik Mengabdi Vol. 5 No. 1 (2026)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.tekad.2026.05.1.1

Abstract

The partner in this community service program is SMK Muhammadiyah 1 Kepanjen Malang. The partner needs knowledge about the extraction process and its application in the chemical industry. The extraction process is a separation process that involves solvents. The extraction process has two types different of solid-liquid and liquid-liquid extraction which the extraction process is based on chemical and physical properties. Through this activity, the PKM team of the Chemical Engineering Department FTUB introduced the solid-liquid extraction process to teachers and students of SMK Muhammadiyah 1 Kepanjen Malang. The activity consisted of a discussion of the basic concept of the extraction process and practical laboratory work of the anthocyanin extraction process from butterfly pea flowers. During the activity, the participants were very enthusiastic in participating in the activity. In addition, this program also motivates students to continue their education to a higher level by providing more adequate laboratory facilities.
Calcination Temperature Effect on Characteristic Properties of Na2/3[Fe1/2Mn1/2]O2 Synthesized by Sol-Gel Reaction Puspitasari, Diah Agustina; Supriyono, Supriyono; Kartikowati, Christina Wahyu; Fauziyah, Mar’atul; Gapsari, Femiana; Pratiwi, Vania Mitha; H Br Butar-Butar, Devina Annora; Marisa D.N, Ira; Maghfiroh, Rashieka Putri; Prasetia, Yudha Bhakti; Adi I. R, Rivanda; Aqil H, Irginata; Rajabi, Roihan; Abdul, Umar Khalid Zaki
Equilibrium Journal of Chemical Engineering Vol 8, No 1 (2024): Volume 8, No 1 July 2024
Publisher : Program studi Teknik Kimia UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/equilibrium.v8i1.80464

Abstract

Abstract. Recently, Na2/3[Fe1/2Mn1/2]O2 has received attention as a potential candidate material for cathode sodium-ion batteries. However, this material was synthesized by a solid-state process, resulting in larger particle size and nonuniform morphology. The larger particle size will sluggish the Na ion diffusion. Here we report the synthesis of Na2/3[Fe1/2Mn1/2]O2 using a simple sol-gel process. The X-ray diffraction revealed that the sample was identified as Na2/3[Fe1/2Mn1/2]O2 with a hexagonal crystal structure. However, the impurities are formed at diffraction angles of 36.28°, 45.03°, and 51.23°. Calcination temperature affects the formation of the crystal phase, grain growth, morphology, and particle size. Our findings provide valuable insight into the development of Na2/3[Fe1/2Mn1/2]O2  material with desirable properties. Keywords:Sol-Gel, Solid State, Grain Growth, Calcination, Na2/3[Fe1/2Mn1/2]O2 
Co-Authors Abdul, Umar Khalid Zaki Adi I. R, Rivanda Agustina Puspitasari, Diah Aqil H, Irginata Bambang Poerwadi Christina Wahyu Kartikowati Christina Wahyu Kartikowati Dewi, Laura alvina Diah Agustina Puspitasari, Diah Agustina Femiana Gapsari MF H Br Butar-Butar, Devina Annora Hidayati, A.S. Dwi Saptati Nur Juliananda, Juliananda Maghfiroh, Rashieka Putri Marisa D.N, Ira Nengseh, Evi Sulviani Prasetia, Yudha Bhakti Pratiwi, Vania Mitha Rajabi, Roihan Rama Oktavian, Rama Saputra, Qoiru Ramanda SUPRIYONO Supriyono Supriyono Taqwa, Abiyyu Nabil Yulaichah, Siti