Garuda - Garba Rujukan Digital

Sintesis dan Karakterisasi Biochar-Fe Nanoparticles dari Limbah Kulit Kopi Fadli, Riskal; Damris, Muhammad; Prabasari, Ira Galih
Jurnal Teknik Kimia USU Vol. 15 No. 1 (2026): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jtk.v15i1.24417

Coffee husk waste has the potential to cause environmental problems if not properly managed. One promising utilization approach is its conversion into biochar. In this study, biochar was produced via pyrolysis at temperatures of 400 °C, 500 °C, and 600 °C. The final temperature was maintained for 1 hour, after which the material was synthesized using ferric chloride hexahydrate (FeCl₃·6H₂O) as an iron precursor through a base precipitation reaction in 1.5 M NaOH solution at 80 °C for 4 hours. SEM–EDX characterization results showed that increasing the pyrolysis temperature influenced pore structure development, where higher temperatures led to smaller pore diameters and denser surface morphology after Fe incorporation. The highest Fe content was obtained in biochar produced at 600 °C, reaching 14.32%. The utilization of coffee husk waste as a precursor for Fe-modified biochar demonstrates potential for enhancing Dissolved Organic Carbon stabilization. This potential is attributed to the material characteristics obtained, namely the combination of a porous structure and the presence of active iron phases, which theoretically can enhance chemical interactions and binding capacity toward dissolved organic compounds.

Sosialisasi Bahaya Penggunaan Zat Aditif pada Makanan Kemasan di Desa Mendalo Indah Kecamatan Jambi Luar Kota Teguh Setyawan; Revi Maylina Tanjung; Nur Jaya; Rani Khoiriyah; Melvi Muharmi; Widya Twiny Rizki; Defia Indah Permatasari; Muh. Rizal B; Vebria Ardina; Riskal Fadli; Susanti Aprilina; Pratama, Tio Aditia
Jurnal Pengabdian Masyarakat Pinang Masak Vol. 7 No. 1 (2026): Vol 7 No 1 (2026) juni 2026
Publisher : Fakultas Sains dan Teknologi, Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jpm.v7i1.55589

Community awareness regarding the safe use of food additives in packaged foods remains relatively low, particularly in understanding the differences between safe and harmful additives and the importance of reading nutritional labels. This condition was also identified among residents of RT 11/RW 03 Valencia Housing Complex, Mendalo Indah Village, Jambi Luar Kota District, where the consumption of packaged and instant foods was relatively high, especially among housewives and children. Therefore, this community service activity aimed to improve public understanding of the hazards of excessive use of synthetic food additives and increase awareness regarding safe food selection. The program was conducted using an educational and participatory approach involving 20 housewives aged 30–60 years. The implementation stages consisted of preparation, educational activities, assistance, and evaluation. Educational materials were delivered through interactive presentations, brochures, discussions, and direct practice in identifying food additives through packaged food labels. The effectiveness of the program was evaluated using pretest and posttest questionnaires. The results showed a significant improvement in participants’ understanding after the educational activities. Participants demonstrated better knowledge regarding the functions of food additives, the hazards of borax use, the identification of potentially harmful additives, and the importance of reading product composition labels. The activity also increased participants’ awareness of selecting safer food products and encouraged healthier consumption behavior within the community.

Sintesis dan Karakterisasi Biochar-Fe Nanoparticles dari Limbah Kulit Kopi Riskal Fadli; Muhammad Damris; Ira Galih Prabasari
Jurnal Teknik Kimia USU Vol. 15 No. 1 (2026): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jtk.v15i1.24417

Coffee husk waste has the potential to cause environmental problems if not properly managed. One promising utilization approach is its conversion into biochar. In this study, biochar was produced via pyrolysis at temperatures of 400 °C, 500 °C, and 600 °C. The final temperature was maintained for 1 hour, after which the material was synthesized using ferric chloride hexahydrate (FeCl₃·6H₂O) as an iron precursor through a base precipitation reaction in 1.5 M NaOH solution at 80 °C for 4 hours. SEM–EDX characterization results showed that increasing the pyrolysis temperature influenced pore structure development, where higher temperatures led to smaller pore diameters and denser surface morphology after Fe incorporation. The highest Fe content was obtained in biochar produced at 600 °C, reaching 14.32%. The utilization of coffee husk waste as a precursor for Fe-modified biochar demonstrates potential for enhancing Dissolved Organic Carbon stabilization. This potential is attributed to the material characteristics obtained, namely the combination of a porous structure and the presence of active iron phases, which theoretically can enhance chemical interactions and binding capacity toward dissolved organic compounds.

Peningkatan Kreativitas Anak Panti Asuhan melalui Pembuatan Krayon Ramah Lingkungan Permana, Edwin; Rahayu, Martina Asti; Pratiwi, Nurul; Wijaya, Dhian Eka; Alim, Khairul; Rizal B, Muh.; Fadli, Riskal; Ardina, Vebria; Siregar, Arifin Aulia; Nugroho, Prasetio Adi; Setiawan, Wahyu Rahmat
Jurnal Pustaka Mitra (Pusat Akses Kajian Mengabdi Terhadap Masyarakat) Vol 5 No 6 (2025): Jurnal Pustaka Mitra (Pusat Akses Kajian Mengabdi Terhadap Masyarakat)
Publisher : Pustaka Galeri Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55382/jurnalpustakamitra.v5i6.1353

Program pengabdian kepada masyarakat ini dilaksanakan di Panti Asuhan Aisyiyah Muhammadiyah Kuala Tungkal yang membina 43 anak yatim, piatu, dan dhuafa. Permasalahan utama mitra adalah rendahnya kreativitas anak-anak dalam memanfaatkan potensi lingkungan dan kurangnya kesadaran terhadap isu lingkungan, terutama pengelolaan minyak jelantah. Limbah tersebut berpotensi mencemari lingkungan, padahal dapat diolah menjadi produk bernilai guna. Kegiatan ini bertujuan meningkatkan kreativitas dan kepedulian lingkungan melalui edukasi prinsip 3R (Reduce, Reuse, Recycle) serta pelatihan pembuatan krayon ramah lingkungan berbasis minyak jelantah. Metode pelaksanaan meliputi survei kebutuhan, penyuluhan, pelatihan teknis, pendampingan praktik, serta evaluasi hasil kegiatan. Hasil menunjukkan peningkatan pengetahuan anak-anak tentang prinsip 3R dan keterampilan dalam mengolah minyak jelantah menjadi krayon yang dapat digunakan untuk kegiatan belajar. Kegiatan ini berkontribusi terhadap pemberdayaan anak-anak panti asuhan dan mendukung pencapaian indikator kinerja utama perguruan tinggi di bidang pengabdian kepada masyarakat.

Title

Found 4 Documents
Search

Abstract

Abstract

Abstract

Abstract

Title Search

Found 4 Documents Search

Abstract

Abstract

Abstract

Abstract

Title

Found 4 Documents
Search