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All Journal Jurnal Teknoin Reaktor JURNAL KIMIA SAINS DAN APLIKASI CHEMICA Jurnal Teknik Kimia Indonesian Journal of Science and Technology Jurnal Inovasi Teknik Kimia Khazanah: Jurnal Mahasiswa International Journal of Renewable Energy Development
Arif Hidayat
Program Studi Teknik Kimia, Fakultas Teknologi Industri, Universitas Islam Indonesia
Religion Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Public Health Social Sciences

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Sintesis Biodiesel dari Minyak Dedak Padi Memanfaatkan Katalis Padat dari Limbah Pengolahan Bauksit (Red Mud) Arif Hidayat; Yosef Budiman; Maharani Fatimah Azzahra; Tsabita Yamna Putri R
Jurnal Inovasi Teknik Kimia Vol 9, No 4 (2024)
Publisher : Fakultas Teknik Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31942/inteka.v9i4.10050

Abstract

In this study red mud, a solid waste from extraction process of bauxite mineral in Alumina Industry, was utilized as a solid catalyst for biodiesel production. In this study, biodiesel synthesis from reice bran oil was studied using red mud as solid catalysts. The catalyst was prepared by calcination. The performance of this catalyst will be evaluated in terms of molar ratio of methanol to (1:6–1:12), reaction temperature (35–65 °C), and catalyst loading (1-10%wt.). The results show that biodiesel yield is increased by increasing molar ratio of methanol to oil, reaction temperature and catalyst concentration. The optimum reaction conditions were obtained at 65 °C of reaction temperature, 1:12 of oil to methanol molar ratio, and 10% of catalyst amount. The highest biodiesel yield of 85.2% was obtained. The red mud catalyst has a promising candidate to be utilized in biodiesel production.
PENINGKATAN KANDUNGAN BESI PADA LIMBAH PERTAMBANGAN BAUKSIT (RED MUD) DENGAN METODE ACID LEACHING MENGGUNAKAN LARUTAN ASAM FLUORIDA Sayyidatun Nafisah; Deni Shidqi Khaerudini; Arif Hidayat
Jurnal Inovasi Teknik Kimia Vol. 10 No. 4 (2025): October| INTEKA - Jurnal Inovasi Teknik Kimia
Publisher : Fakultas Teknik Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31942/inteka.v10i4.14296

Abstract

Red mud merupakan limbah padat hasil samping industri pengolahan bauksit melalui proses Bayer yang mengandung besi dalam jumlah tinggi, namun bercampur dengan berbagai oksida logam. Penelitian ini bertujuan untuk meningkatkan kandungan besi dalam red mud melalui metode acid leaching menggunakan larutan asam fluorida (HF). Proses leaching dilakukan dalam sistem refluks dengan variasi waktu (1–4 jam) dan konsentrasi asam (12–48%), kemudian residu dianalisis menggunakan X-Ray Fluorescence (XRF) untuk mengetahui perubahan komposisi. Hasil penelitian menunjukkan bahwa peningkatan waktu dan konsentrasi larutan asam mampu memperkaya kandungan Fe₂O₃ dalam residu, dengan nilai maksimum sebesar 45,91% pada kondisi 48% HF dan waktu leaching 4 jam.
Co-Authors Arif Ferdiyanto Cholila Tamzysi Cholila Tamzysi Deni Shidqi Khaerudini Diana Diana Fadilla Noor Rahma Fadilla Noor Rahma Fajar Hamida Munfaridi Hirofumi Hinode Kiki Adi Kurnia Maharani Fatimah Azzahra Muflih Arisa Adnan Muflih Arisa Adnan Resita Trisnaningtyas Sayyidatun Nafisah Septya Chilya Faizah Sutarno Sutarno Sutrisno, Bachrun Tsabita Yamna Putri R Venitalitya Alethea Sari Augustia Winarto Kurniawan Yosef Budiman Zahrul Mufrodi, Zahrul