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All Journal Teknika: Jurnal Sains dan Teknologi RELE: Rekayasa Elektrikal dan Energi Jurnal Teknik Elektro ORBITA: Jurnal Pendidikan dan Ilmu Fisika Jurnal Abdi Ilmu JURNAL PEMBELAJARAN DAN MATEMATIKA SIGMA (JPMS) International Journal of Applied Sciences and Smart Technologies Budimas : Jurnal Pengabdian Masyarakat Jurnal VORTEKS Jurnal Abdi Mas Adzkia Jurnal Syntax Fusion : Jurnal Nasional Indonesia ABDI SABHA (Jurnal Pengabdian kepada Masyarakat) International Journal of Basic and Applied Science BERKAT: Jurnal Pemberdayaan Masyarakat Bhinneka Tunggal Ika: Jurnal Pengabdian Kepada Masyarakat Komposit : Jurnal Pengabdian Dan Pemberdayaan Masyarakat Jurnal Pengabdian Kepada Masyarakat dan Desa (PASSA)
HS, Samaria Chrisna
Jurusan Teknik Elektro, Politeknik Negeri Medan
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Comparison of the mass composition of Coconut Shell in TiO2 towards its characterization for supercapacitor applications Siagian, Sinta Marito; H. S, Samaria Chrisna; Tampubolon, Ferdinan Rinaldo; Juanta, Palma
International Journal of Applied Sciences and Smart Technologies Volume 06, Issue 1, June 2024
Publisher : Universitas Sanata Dharma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24071/ijasst.v6i1.7417

Abstract

This study aims to evaluate the effect of the mass ratio on the capacitance of electrodes made from TiO-based composites. The composites were synthesized using a wet chemical method and applied using the doctor blade technique, incorporating TiO2 and rGO derived from coconut shell activated carbon. Our findings reveal that at a 1:1 mass ratio, the atomic composition of Ti and O was non-uniform, although there was evident adherence of TiO2 elements to the sample surface. In contrast, at mass ratios of 1:3 and 1:5, a decrease in the concentration of Ti atoms and an increase in O atoms were observed, indicating a reduction in Ti oxidation. SEM analysis further revealed that particle size significantly impacts capacitance: smaller particle sizes yielded higher capacitance. In the 1:1 mass variation, the discharge process was protracted, taking up to 29.3 minutes and generating an electrical energy of 0.000413 joules with a capacitance of 489 µF. These insights are pivotal for optimizing the composition and mass ratio, fostering the development of electrode materials characterized by enhanced capacitance and energy efficiency. Such advancements hold promising potential for a range of applications in the energy storage sector.Keywords: Activated Carbon, Capasitance, Supercapacitor
Penerapan Elektromotor pada Alat Pengiris Keripik Pisang untuk Meningkatkan Produktivitas Usaha Cemilan Fatihah di Kecamatan Medan Sunggal Juli Iriani; Gunoro Gunoro; Abdullah Abdullah; Samaria Chrisna HS; Maharani Putri; Cholish Cholish
Jurnal Pengabdian dan Pemberdayaan Masyarakat Vol. 4 No. 1 (2026): Edisi Juni
Publisher : Jurusan Teknik Sipil, Politeknik Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51510/komposit.v4i1.2858

Abstract

Kegiatan Pengabdian pada Penerapan Elektromotor pada Alat Pengiris Keripik Pisang untuk Meningkatkan Produktivitas Usaha Cemilan Fatihah di Kecamatan Medan Sunggal dilatarbelakangi oleh rendahnya efisiensi proses produksi pada Usaha Cemilan Fatihah yang masih menggunakan alat pengiris manual. Proses pengirisan secara konvensional menyebabkan waktu produksi menjadi lama, hasil irisan tidak seragam, serta kapasitas produksi yang terbatas. Selain itu, mitra juga belum memiliki pengetahuan dan keterampilan dalam pemanfaatan teknologi tepat guna, khususnya penggunaan alat berbasis elektromotor yang dapat meningkatkan efisiensi kerja dan konsistensi hasil. Melalui kegiatan PKM ini, tim pelaksana memberikan solusi berupa penerapan alat pengiris keripik pisang berbasis elektromotor yang dirancang untuk mempercepat proses pengirisan, menghasilkan irisan yang seragam, serta meningkatkan kapasitas dan kualitas produksi. Kegiatan ini juga disertai dengan pelatihan teknis kepada mitra mengenai cara pengoperasian, instalasi, dan perawatan alat agar dapat digunakan secara mandiri dan berkelanjutan. Metode pelaksanaan kegiatan meliputi ceramah untuk penyampaian konsep dasar teknologi alat, diskusi interaktif untuk memahami kebutuhan mitra, demonstrasi alat pengiris elektromotor, serta pendampingan langsung dalam proses instalasi dan pengoperasian. Tahapan kegiatan dimulai dari survei lokasi mitra dan identifikasi permasalahan produksi, dilanjutkan dengan perancangan dan pembuatan alat, hingga tahap pelatihan penggunaan dan evaluasi hasil kegiatan. Hasil kegiatan menunjukkan adanya peningkatan produktivitas dan efisiensi produksi pada Usaha Cemilan Fatihah, baik dari segi waktu, jumlah produksi, maupun keseragaman hasil irisan. Penerapan teknologi elektromotor ini diharapkan dapat meningkatkan daya saing mitra serta mendorong pengembangan UMKM berbasis teknologi tepat guna.
Development and performance evaluation of a UV-assisted TiO₂/ZnO-activated carbon photocatalytic reactor for methylene blue degradation Sinta Marito Siagian; Samaria Chrisna HS; Ferdinan Rinaldo Tampubolon; Rischa Devita
Jurnal Teknika Vol 22, No 1 (2026)
Publisher : Faculty of Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/tjst.v22i1.39851

Abstract

Textile wastewater containing synthetic dyes poses serious environmental concerns due to its persistence and toxicity. Although TiO₂, ZnO, and activated carbon-based photocatalysts have shown promising degradation performance, limited studies have explored their integration into photocatalytic reactor systems. Therefore, a UV-assisted TiO₂/ZnO-activated carbon reactor was developed for methylene blue degradation. Therefore, this study aimed to develop and evaluate a UV-assisted photocatalytic reactor employing a TiO₂/ZnO-activated carbon (AC) composite derived from coconut shell waste for methylene blue degradation. This process begins with the production of activated carbon from coconut shell waste, which is ground into a powder and then ground using a mortar and pestle. The powder has activated with H2SO4 and stirred with a magnetic stirrer for 2 hours, accompanied by heating. The powder then filtered and heated in a microwave at 100°C until there is no water content in the carbon. The decrease in the degradation rate observed using a UV-VIS spectrophotometer. Concentration of MB are 50 ppm and 150 ppm, for 60 minutes with an optimal wavelength between 288-300 nm. Degradation efficiency reached 93.5% by 50 ppm, with the absorbance decreasing from 0.347828 at the 20 minutes to 0.064366 at the 60 minutes. Meanwhile, at a concentration of 150 ppm, degradation was recorded at 87.7%, with the absorbance decreasing from 0.494045 at the 20 minutes to 0.122852 at the 60 minutes. These results indicate that the developed UV-assisted TiO₂/ZnO-activated carbon photocatalytic reactor exhibits high performance for methylene blue degradation and offers a sustainable approach for textile wastewater treatment applications.
Co-Authors Abdullah Abdullah Adam, Muhammad Agustina Ginting Ahmad Taufik Rawi Cholish Cholish Devita, Rischa Faisal Lubis Ferdinan Rinaldo Tampubolon Ginting, Agustina Gunoro Haq, Moh Zainul Indah Nurhidayati Juanta, Palma Juli Iriani Juli Iriani, Juli Karima Indah, Sarah Khiarani, Suci Maharani Putri MARIA BINTANG Marito Siagian, Sinta Meidi Wani Lestari, Meidi Wani Nainggolan, Tito Karnavia Purba, Angelia Purba, Arlina Pratiwi Purba, Switamy Angnitha R Tampubolon, Ferdinan Rinaldo Tampubolon, Ferdinan Rischa Devita Rischa Devita Saragih, Yessy Dea Sylvia Sarah Karima Indah Siagian, Sinta Siagian, Sinta Marito Simatupang, Eva Sinambela, Lamtiur Sinta Marito Siagian Sitinjak , Anna Angela Sri Indah Rezkika Suci Khairani Susaidin Sutan Pardede Tampubolon, Ferdinan Rinaldo Yessy Dea Sylvia Saragih yuvina