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All Journal Journal of Engineering Science and Technology Management Komunita: Jurnal Pengabdian dan Pemberdayaan Masyarakat JES-TM Social and Community Service
Yogi Yolanda
Universitas Riau
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Public Health Social Sciences 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.
Edukasi Pembuatan Detergen Cair sebagai Upaya Pemberdayaan Ibu-Ibu PKK di Perumahan Graha Rawa Bangun Kelurahan Tuah Karya Kecamatan Tuah Madani Kota Pekanbaru Nurfatihayati; Cory Dian Al’farisi; Anisa Mutamima; Panca Setia Utama; Ahmad Fadli; Yelmida Azis; Sunarno; Suhendri; Alltop Amri Ya Habib; Ariya Eka Alel; Ririn Puji Hastuti; Yogi Yolanda; Ferdy Ashari Syawal
KOMUNITA: Jurnal Pengabdian dan Pemberdayaan Masyarakat Vol 5 No 1 (2026): Februari
Publisher : PELITA NUSA TENGGARA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.60004/komunita.v5i1.499

Abstract

This community service activity aimed to enhance the knowledge and skills of PKK women in producing liquid detergent as an effort to promote community empowerment and household self-reliance. The activity was conducted in Graha Rawa Bangun Housing Area, Tuah Karya Village, Tuah Madani District, Pekanbaru City. The implementation methods included educational sessions, hands-on training on liquid detergent production, and evaluation using pre-test and post-test questionnaires. The training materials covered the introduction of raw materials, the function of each component, production procedures, and safety aspects related to the use of household chemicals. The evaluation results indicated a significant improvement in participants’ knowledge. The average level of participants’ knowledge increased from 16% in the pre-test to 85% in the post-test, with an overall improvement of 69%. Improvements were observed in both the understanding of primary cleaning agents and auxiliary ingredients in liquid detergent formulations. These findings demonstrate that an educational approach integrating simple scientific explanations with practical training is effective in enhancing participants’ capacity. The outputs of this activity include improved knowledge and skills of PKK women in producing safe and applicable liquid detergent, which has the potential to support household independence and community empowerment.
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 Ahmad Fadli Alltop Amri Ya Habib Ariya Eka Alel Cory Dian Al’farisi Ferdy Ashari Syawal Lisa Legawati M. Iwan Fermi Mutamima, Anisa Nurfatihayati Ririn Puji Hastuti Salma Liska Sri Rezeki Muria Suhendri Suhendri Suhendri Sunarno Utama, Panca Setia Yelmida Azis Yola Bertilsya Hendri Z Zulfansyah Zulfansyah Zulfansyah