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All Journal Unri Conference Series: Community Engagement Journal of Engineering Science and Technology Management JES-TM Social and Community Service
Lisa Legawati
Universitas Riau
Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Engineering Other

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Edukasi Pemanfaatan Minyak Jelantah Menjadi Sabun Ramah Lingkungan melalui Media Leaflet Lisa Legawati; Yola Bertilsya Hendri; Yogi Yolanda; Salma Liska; Muhammad Iwan Fermi; Zulfansyah; Sri Rezeki Muria
Journal of Social and Community Service Vol. 5 No. 1 (2026): Maret 2026
Publisher : Faculty of Engineering University of Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jestmc.v5i1.443

Abstract

Minyak jelantah merupakan limbah rumah tangga yang masih sering dibuang langsung ke lingkungan tanpa pengolahan sehingga berpotensi menimbulkan pencemaran air dan tanah. Selain itu, penggunaan minyak goreng secara berulang dapat menurunkan kualitas minyak dan berisiko terhadap kesehatan. Kegiatan pengabdian ini bertujuan meningkatkan pengetahuan dan kesadaran masyarakat mengenai pengelolaan minyak jelantah melalui pemanfaatannya menjadi sabun ramah lingkungan. Kegiatan dilaksanakan di RT 002/RW 014 Kelurahan Simpang Baru, Pekanbaru, dengan jumlah peserta sebanyak 12 orang. Metode yang digunakan meliputi penyampaian materi secara langsung, pembagian edukatif, serta evaluasi menggunakan pretest dan posttest. Hasil kegiatan menunjukkan adanya peningkatan pemahaman peserta setelah edukasi diberikan. Peserta juga memberikan respon positif terhadap leaflet karena informasi disajikan secara ringkas, visual, dan mudah dipahami. Dengan demikian, kegiatan pengabdian melalui media leaflet efektif meningkatkan pengetahuan masyarakat serta mendorong pemanfaatan minyak jelantah menjadi produk bernilai guna dan ramah lingkungan.
Implementasi Pemeliharaan Ikan Patin di Kolam Berbasis Pakan Herbal Kunyit Putih untuk Meningkatkan Produktivitas dan Ketahanan Pangan Kelompok Budidaya Pokdakan Bangun Makmur di Desa Parit Aman, Kecamatan Bangko, Kabupaten Rokan Hilir Rusliadi Rusliadi; Heri Masjudi; Usman M. Tang; Mira Rahmita Sari; Hendrini Renolafitri; Morian Saspriatnadi; Zuqni Meldha; Lisa Legawati; Rahma Aprianti; Anelia Diah Wintang Sari
Unri Conference Series: Community Engagement Vol 7 (2025): Seminar Nasional Pemberdayaan Masyarakat
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/unricsce.7.419-425

Abstract

Bangun Makmur Fish Farming Group in Parit Aman Village, Bangko District, Rokan Hilir Regency, participated in a community service program focusing on catfish farming technology through the integration of white turmeric-based herbal feed and rabal probiotics. This initiative aimed to enhance productivity, reduce production costs, and strengthen food security and the local economy. The program was implemented through training, field practice, mentoring, and continuous evaluation using a learning by doing approach. The results indicated notable improvements in farming performance. The use of white turmeric herbal feed reduced the Feed Conversion Ratio (FCR) to as low as 1.5, decreased feed costs by 28%, and increased fish harvest weight by 15 25%. The application of rabal probiotics contributed to more stable water quality, lowered fish mortality to below 15%, and improved water-use efficiency. In addition to technical outcomes, group members improved their management capacity by adopting Good Aquaculture Practices (CBIB), digital record-keeping, and online marketing strategies. Overall, the program demonstrated that combining herbal feed and probiotic technology with strengthened management practices is an effective strategy to promote economic independence and establish aquaculture as a sustainable alternative to secure food and livelihoods in rural communities.
Dynamic Modeling and Nyquist Stability Analysis of a Non-Interacting Two-Tank Series Thermal System Yogi Yolanda; Yola Bertilsya Hendri; Salma Liska; Lisa Legawati; Suhendri Suhendri; Alltop Amri Ya Habib; Zulfansyah Zulfansyah
Journal of Engineering Science and Technology Management (JES-TM) Vol. 6 No. 2 (2026): JES-TM 2026
Publisher : Journal of Engineering Science and Technology Management

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jestm.v6i2.431

Abstract

Series tank systems are vital in chemical industries but susceptible to mass and thermal disturbances, making stability analysis essential. This study models the level and temperature dynamics of a non-interacting two-tank system equipped with a heater in Tank-01, analyzing its stability via Nyquist plots. The methodology involves laboratory step-response experiments validated against mathematical models derived using Laplace Transforms and Explicit Euler methods. Results demonstrate the model closely matches experimental data; Tank-01 exhibits first-order characteristics, while Tank-02 functions as a second-order system. The physical system successfully handled +52% and -35% step disturbances within liquid height limits of 3–24 cm and feed flow rates of 40.33–136.5 cm³/s. Furthermore, Nyquist analysis confirms the open-loop thermal process is inherently stable across all tested capacities. Maximum level and thermal process gains were 0.3787 and 0.0062, respectively. Ultimately, this study confirms the non-interacting two-tank system possesses stable, self-regulating characteristics against load disturbances within operational limits.
Co-Authors Alltop Amri Ya Habib Anelia Diah Wintang Sari Hendrini Renolafitri M. Iwan Fermi Masjudi, Heri Mira Rahmita Sari Morian Saspriatnadi Rahma Aprianti Rusliadi Rusliadi Salma Liska Sri Rezeki Muria Suhendri Suhendri Usman Muhammad Tang Yogi Yolanda Yola Bertilsya Hendri Z Zulfansyah Zulfansyah Zulfansyah Zuqni Meldha