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All Journal Jurnal Kesehatan Gigi Indonesian Journal of Chemistry JMM (Jurnal Masyarakat Mandiri) Interdental Jurnal Kedokteran Gigi (IJKG) Journal of Renewable Energy, Electrical, and Computer Engineering Jurnal Teknik Kimia dan Lingkungan Journal of Engineering and Technological Sciences
Ernawati, Kadek Lusi
Bagian Konservasi Gigi, Fakultas Kedokteran Gigi, Universitas Mahasaraswati Denpasar
Aerospace Engineering Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Dentistry Electrical & Electronics Engineering Energy Engineering Materials Science & Nanotechnology Medicine & Pharmacology Public Health Other

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UTILISASI LIMBAH MINYAK JELANTAH MENJADI PRODUK SABUN PADAT DAN LILIN SEBAGAI UPAYA PENERAPAN ZERO WASTE Ernawati, Lusi; Lestari, Rizka; Yuniar, Rizka Ayu; Putri, Nita Ariestiana; Hariyadi, Asful
JMM (Jurnal Masyarakat Mandiri) Vol 8, No 5 (2024): Oktober
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jmm.v8i5.25997

Abstract

Abstrak: Limbah minyak goreng merupakan salah satu limbah rumah tangga yang berpotensi mencemari lingkungan. Residu dari proses penggorengan ini banyak mengandung asam lemak yang memiliki potensi untuk diolah menjadi produk sabun padat dan lilin. Kegiatan pengabdian masyarakat ini ditujukan untuk meningkatkan kemampuan mitra baik hard skill dan soft skill yakni mencakup: (1) mitra mampu memahami prosedur pembuatan sabun dan lilin dengan bahan dasar minyak jelantah, (2) terbentuknya ketrampilan mitra dalam membuat produk berupa sabun padat dan lilin aroma terapi, (3) mengasah kemampuan komunikasi mahasiswa ITK yang terlibat dalam tim panitia kegiatan pengabdian melalui presentasi dan hubungan sosial dengan peserta pelatihan. Selain itu kegiatan ini menjadi salah satu bentuk upaya penerapan zero waste untuk mengubah limbah menjadi produk yang memiliki nilai guna dan bernilai ekonomi. Adapun metode pelaksanaan kegiatan dilakukan melalui transfer of knowledge dan technology dengan langkah-langkah: (1) persiapan, (2) pelaksanaan, dan (3) evaluasi kegiatan. Pelaksanaan kegiatan dilakukan di kampus ITK sebagai host kegiatan berlokasi di lab kimia dasar dengan peserta siswa dan guru SMP 5 Balikpapan sebanyak 20 orang. Kegiatan ini dilakukan melalui beberapa metode yaitu ceramah, tanya jawab dan diskusi kemudian dilanjutkan praktik pembuatan sabun padat dan lilin. Kegiatan ini berjalan dengan baik dan disambut antusias oleh peserta pelatihan. Perubahan pemahaman peserta sebelum dan setelah pelaksanaan kegiatan tentang proses pembuatan sabun dan lilin dari limbah minyak minyak jelantah menjadi indikator keberhasilan kegiatan. Sebanyak 90% peserta (termasuk guru dan para siswa) belum mengetahui bagaimana cara pembuatan sabun padat dan lilin aroma terapi dari minyak jelantah sebelum mengikuti kegiatan pelatihan. Setelah dilakukan pelatihan dan praktik pembuatan, seluruh peserta telah mengetahui cara pembuatan sabun maupun lilin dari minyak jelantah serta diharapkan peserta pelatihan memiliki keterampilant memanfaatkan limbah minyak goreng di rumah.Abstract: One of the household pollutants that might contaminate the environment is cooking oil waste. Many fatty acids found in the frying residue have the ability to be converted into solid soap and wax compounds. This community service project aims to enhance partners' abilities, both hard and soft skills. These abilities include: (1) partners' comprehension of the steps involved in creating soap and candles from used cooking oil; and (2) partners' development of skills in creating solid soap and candle products. aromatherapy; (3) through presentations and interpersonal interactions with training participants, ITK students participating in the committee team for the service activity will improve their communication abilities. Aside from that, this activity is an attempt to achieve zero waste by turning rubbish into useful and valuable goods. The method for implementing activities is carried out through the transfer of knowledge and technology with the steps: (1) preparation, (2) implementation, and (3) evaluation of activities. Twenty students and teachers from SMP 5 Balikpapan participated in the program, which was hosted on the ITK campus in the basic chemistry lab. A variety of techniques were used to carry out this activity, including lectures, Q&A sessions, and group discussions. The process of creating solid soap and candles was the next step. The training participants eagerly welcomed and the activity proceeded smoothly. An indicator of the activity's success is how participants' knowledge of how to make soap and candles from leftover used cooking oil changed before and after the activity. Prior to taking part in the training session, up to 90% of participants—including teachers and students—did not know how to produce solid soap and aromatherapy candles out of spent cooking oil. All participants learned how to produce soap and candles from spent cooking oil after completing training and manufacturing practice, and it is anticipated that training participants would be able to use leftover cooking oil at home.
Adsorption Kinetics and Process Parameter Effects on Oil Uptake by Tamarind Fruit-Shell Activated Carbon Ernawati, Lusi; Anifah, Eka Masrifatus; Musyarofah, Musyarofah; Reza, Mutia; Waluyo, Joko; Sapawe, Norzahir
Jurnal Teknik Kimia dan Lingkungan Vol. 9 No. 2 (2025): October 2025 (In Progress)
Publisher : Politeknik Negeri Malang

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Abstract

Oil contamination presents a major challenge to wastewater treatment systems due to its detrimental effects. This research explores the effectiveness of activated carbon derived from tamarind fruit shells as an adsorbent for removing oil from wastewater. The activated carbon was prepared using three different chemical agents: phosphoric acid, zinc chloride, and sodium hydroxide. Characterization of the resulting carbon materials was performed using XRD, FTIR, SEM, and BET analysis. Batch adsorption experiments were conducted to evaluate the influence of initial oil concentration, adsorbent dosage, contact time, temperature, and pH. The BET specific surface area, pore size and total pore volume for the optimum adsorption capacity of activated carbon using H3PO4 are obtained at 617.59 m2.g-1, 37.14 cm3.g-1 and 0.812 g.g-1, respectively. Optimal adsorption occurred at an oil concentration of 5000 mg.L-1, a dosage of 1 g.L-1, a contact time of 60 minutes, a temperature of 60°C, and neutral pH (7). Across all activating agents, the Langmuir isotherm best described the adsorption equilibrium, while adsorption kinetics followed the pseudo-second-order model. Among the samples, activated carbon treated with H3PO4 demonstrated the highest adsorption capacity (1070 mg.g-1), followed by ZnCl2 (879 mg.g-1), and NaOH (643 mg.g-1). These results indicate that tamarind shell-derived activated carbon is a cost-effective and efficient solution for oil removal in wastewater treatment applications.
Comparative Study on Magnetic Activated Carbon Derived from Delignified and Non-delignified Palm Kernel Shell: Synthesis, Characterization, and Methylene Blue Adsorption Analysis Waluyo, Joko; Nabila, Zahrani Putri; Putra, Ariadi Indra; Purba, Ibnu Tryansar; Izzulhaq, Muhammad Ghozy; Kurnia, Irwan; Septian, Ardie; Ernawati, Lusi
Journal of Engineering and Technological Sciences Vol. 57 No. 4 (2025): Vol. 57 No. 4 (2025): August
Publisher : Directorate for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2025.57.4.10

Abstract

Indonesia is the global leader in palm oil production, but it deals with significant challenges in managing palm oil mill waste, particularly palm kernel shells (PKS). This study investigated palm kernel shell (PKS) as a precursor for synthesizing magnetic activated carbon (MAC) to enhance its performance as an adsorbent for liquid waste treatment.  The precursor was delignified using alkali liquor and magnetized by incorporating Fe²⁺ and Fe³⁺ ions, followed by chemical activation (ZnCl₂) through an intermediate pyrolysis process. The performances of delignified and non-delignified MAC (DMAC and NDMAC) were evaluated through methylene blue adsorption tests (25–45 mg/L), focusing on adsorption capacity, dye removal efficiency, as well as isotherm and kinetic analysis. DMAC demonstrated a larger surface area, leading to enhanced adsorption performance. Morphological analysis revealed that delignification had a positive influence on the pore structure and size, resulting in a more uniform distribution. DMAC exhibited an adsorption capacity 16.3% higher (35.3 mg/g) in the equilibrium phase and 16.6% higher at maximum adsorption capacity (50.25 mg/g) according to the Langmuir isotherm. Furthermore, the inclusion of iron ions (Fe2+/Fe3+) promoted pore expansion and formation in the precursor material. The study found the Langmuir isotherm model (R² = 0.999) to be the best fit for methylene blue adsorption, while the pseudo-second-order kinetic model (R² = 0.9958) demonstrated an excellent fit for adsorption kinetics. The findings confirm that DMAC and NDMAC derived from PKS are effective for methylene blue dye adsorption, technically.
Co-Authors A.A.A. Hartini Anifah, Eka Masrifatus Apip Amrullah Ari Astuti Budi Prayitno Dewa Made Wedagama Diyah Fatmasari Gatut Yudoyono Hariyadi, Asful Hartini, I G A A Idhil Ismail, Andi Izzulhaq, Muhammad Ghozy Joko Waluyo Kurnia, Irwan Kurniawati, Diniar Mungil Laksono, Andromeda Dwi Lestari, Rizka Maharsih, Inggit Kresna Maryanti, Desy Maulidah, Istiana Mohamed, Zakiah Musyarofah Musyarofah, Musyarofah Nabila, Zahrani Putri Novi Sylvia Nuraini, Inas Obie Farobie Payungalo, Juwita Poo-arporn, Yingyot Prawisudha, Pandji Purba, Ibnu Tryansar Pusfitasari, Memik Dian Putra, Ariadi Indra Putri, Nita Ariestiana Raihan, Muhammad Reza, Mutia Rizka Ayu Yuniar Rizqy Romadhona Ginting Sapawe, Norzahir Sari, Thalia Winda Septian, Ardie Sianturi, Hizkia Gunawan Parulian Sumantri Sumantri Tanaka, Isao Triwikantoro Triwikantoro Wardhani, Ranti Kusuma Wedagama Wedagama