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All Journal Eksergi: Chemical Engineering Journal Martabe : Jurnal Pengabdian Kepada Masyarakat
Cahya Hakika, Dhias
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Agriculture, Biological Sciences & Forestry Arts Humanities Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Education Industrial & Manufacturing Engineering Materials Science & Nanotechnology Social Sciences

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PELATIHAN PENGOLAHAN LIMBAH DOMESTIK MINYAK JELANTAH MENJADI LILIN AROMATERAPI DI HANAMASA PAN AND BAKERY GIFU, JEPANG Rahayu, Aster; Cahya Hakika, Dhias; Jamilatun, Siti; Alfi Zaini Amrillah, Nafira; Veranica, Veranica
Martabe : Jurnal Pengabdian Kepada Masyarakat Vol 7, No 4 (2024): MARTABE : JURNAL PENGABDIAN KEPADA MASYARAKAT
Publisher : Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/jpm.v7i4.1481-1486

Abstract

Hanamaza Pan and Bakery merupakan suatu usaha roti dan kue halal yang dirintis oleh warna negara Indonesia yang menetap di Gifu, Jepang. Sebagai salah satu home industry yang mengolah produk-produk berbahan organik, Hanamaza Pan and Bakery berpotensi tinggi menghasilkan limbah domestik berupa minyak jelantah. Salah satu cara untuk mengolah minyak jelantah adalah dengan memanfaatkannya menjadi produk yang lebih bermanfaat seperti lilin aromaterapi. Pelatihan teknologi tepat guna ini diharapkan dapat memberdayakan home industry tersebut dalam hal pengolahan limbah yang sifatnya berkelanjutan menjadi produk yang bernilai ekonomis. Berdasarkan evaluasi kegiatan pengabdian yang telah dilakukan, diperoleh hasil berupa peningkatan pengetahuan dan wawasan mitra terkait dengan daur ulang minyak jelantah sebesar 63,3% serta kenaikan pengetahuan wawasan mitra terkait dengan prosedur pembuatan lilin aromaterapi dari minyak jelantah sebesar 26,67%.
Fourier Transform Infrared (FTIR) Characterization of Sulfate Ion Adsorption on One-Pot Synthesized Quaternary Ammonium Polymer Derived from Vinasse Waste Sari, Hutri Puspita; Rahayu, Aster; Cahya Hakika, Dhias; Pramia Lestari, Syahrani
Eksergi Vol 23 No 1 (2026)
Publisher : Prodi Teknik Kimia UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/eksergi.v23i1.15924

Abstract

Vinasse is a major liquid waste generated from the bioethanol industry and contains a high concentration of sulfate ions that may cause environmental problems if not properly managed. This study investigates sulfate adsorption from vinasse wastewater using a one-pot synthesized quaternary ammonium polymer, with a focus on functional group interactions analyzed by Fourier Transform Infrared Spectroscopy (FTIR). Quantitative adsorption experiments were conducted to confirm sulfate removal, while FTIR analysis was employed to examine changes in functional group characteristics before and after adsorption under various operating conditions. The quantitative results demonstrate that sulfate adsorption proceeds rapidly, achieving a removal efficiency of approximately 87.5534% with an adsorption capacity of 10.6800mg/g at a contact time of 20 minutes under the investigated conditions. FTIR spectra indicate that sulfate adsorption does not alter the main polymer structure and is primarily associated with changes in the intensity of bands related to quaternary ammonium groups and sulfate vibrations, suggesting non-covalent interactions dominated by electrostatic attraction, with possible contributions from hydrogen bonding. Overall, this study provides quantitative evidence of sulfate adsorption from real vinasse wastewater and demonstrates the usefulness of FTIR analysis in elucidating interaction behavior between sulfate ions and quaternary ammonium polymer functional groups.
Co-Authors Alfi Zaini Amrillah, Nafira Pramia Lestari, Syahrani Rahayu, Aster Sari, Hutri Puspita Siti Jamilatun Veranica Veranica, Veranica