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All Journal E-Dimas: Jurnal Pengabdian kepada Masyarakat Indonesian Journal of Pure and Applied Chemistry
Oktavia, Fika Dwi
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Biochemistry, Genetics & Molecular Biology Chemistry Social Sciences

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PENGARUH PARAMETER OPERASI PADA PROSES TRANSESTERIFIKASI MINYAK JELANTAH MENGGUNAKAN KATALIS TULANG SAPI TERHADAP YIELD DAN DENSITAS BIODIESEL Sidabutar, Elizabeth Desfelia Ciciolini; Sujana, I Made Ivan Wijayarta Cakra; Oktavia, Fika Dwi; Putri, Nita Ariestiana; Sari, Martina Puspita
Indonesian Journal of Pure and Applied Chemistry Vol 8, No 2 (2025)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/indonesian.v8i2.96860

Abstract

This study uses a heterogeneous catalyst derived from bovine bones to examine the effect of calcination temperature, calcination time, and mass catalyst loading on the yield and density of biodiesel synthesized from waste cooking oil. The bones were cleaned, pressure-cooked, dried, ground, sieved, and then calcined at temperatures of 800 °C and 1000 °C for 2, 4, and 6 hours. The transesterification process was conducted at 65 °C for 1 hour with 4% and 6% catalyst loadings by weight of the waste cooking oil. The results showed that a calcination temperature of 1000 °C produced more stable and active catalysts, thus increasing biodiesel yield, especially at longer calcination times. The highest yield of 72.81% was achieved using 6% catalyst calcined at 1000 °C for 6 hours. In contrast, at 800 °C, the yield tended to decrease or remain inconsistent as calcination time increased. The biodiesel density ranged from 0.944 to 0.955 g/mL, slightly higher than the standard value, possibly due to incomplete conversion or residual glycerides. These findings indicate that calcination temperature, calcination time, and catalyst loading play a significant role in the efficiency of biodiesel synthesis using bovine bone catalysts.
Pemberdayaan UMKM Pantai Serumpun Teritip Melalui Produksi Serbuk Rumput Laut Merupakan Inovatif Unggulan Pesisir Oktavia, Fika Dwi; Rahma, Aulia; Mardika, Riski Arif; Fadlilah, Muthi'ah Nur
E-Dimas: Jurnal Pengabdian kepada Masyarakat Vol 17, No 2 (2026): E-DIMAS
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/e-dimas.v17i2.26672

Abstract

Wilayah pesisir Teritip di Kota Balikpapan memiliki potensi besar dalam budidaya rumput laut jenis Eucheuma sp. dan Gracilaria verrucosa. Namun, masyarakat pesisir umumnya masih menjual rumput laut dalam bentuk mentah atau kering tanpa nilai tambah. Kegiatan pengabdian kepada masyarakat ini bertujuan untuk meningkatkan keterampilan dan kemandirian ekonomi masyarakat Pantai Serumpun Teritip melalui pelatihan pembuatan serbuk rumput laut sebagai produk inovatif unggulan pesisir. Program dilaksanakan dengan pendekatan partisipatif dan edukatif yang meliputi lima tahap, yaitu identifikasi dan survei awal, perencanaan, persiapan, pelaksanaan, serta evaluasi dan keberlanjutan. Pelatihan mencakup teknik pengeringan, penggilingan, pengemasan higienis, serta dasar-dasar branding dan pemasaran. Hasil kegiatan menunjukkan peningkatan pengetahuan dan keterampilan peserta dalam proses pengolahan hingga pengemasan produk. Produk akhir berupa serbuk rumput laut memiliki kualitas baik, umur simpan lebih lama, serta berpotensi menjadi komoditas unggulan UMKM pesisir. Program ini berkontribusi dalam pemberdayaan masyarakat lokal serta mendukung pengembangan ekonomi berkelanjutan di wilayah pesisir Balikpapan.
Co-Authors Fadlilah, Muthi'ah Nur MARDIKA, RISKI ARIF Nita Ariestiana Putri Rahma, Aulia Sari, Martina Puspita Sidabutar, Elizabeth Desfelia Ciciolini Sujana, I Made Ivan Wijayarta Cakra