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All Journal Jurnal Teknik Kimia Journal of Engineering and Technological Sciences
Kusno Budikarjono
Department of Chemical Engineering, Sepuluh Nopember Institute of Technology, Jalan Raya ITS Surabaya 60111
Chemical Engineering, Chemistry & Bioengineering Chemistry Engineering

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PERBAIKAN KUALITAS MINYAK SAWIT SEBAGAI BAHAN BAKU SABUN MELALUI PROSES PEMUCATAN DENGAN OKSIDASI Budikarjono, Kusno
Jurnal Teknik Kimia Vol 1, No 2 (2007): JURNAL TEKNIK KIMIA
Publisher : Program Studi Teknik Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/jurnal_tekkim.v1i2.67

Abstract

Minyak sawit digunakan untuk pembuatan sabun dan deterjen tanpa atau dengan campuranminyak kelapa. Proses pemucatan minyak sawit dapat dilakukan dengan berbagai cara, salahsatunya dengan oksidasi. Cara ini menawarkan alternatif yang dapat digunakan untukmenghindari kehilangan minyak jika digunakan bleaching earth dalam proses pemucatan. Tujuandari penelitian ini adalah mempelajari pengaruh suhu, laju alir udara dan waktu oksidasi padapemucatan minyak sawit dengan proses oksidasi.Hasil penelitian menunjukkan semakin tinggi suhu, semakin besar laju alir udara dansemakin lama waktu oksidasi mengakibatkan semakin besar pengurangan warna. Penguranganwarna maksimal sebesar 85,3%, terjadi pada suhu 110oC, laju alir udara 7,8 l/menit (0,0068 m/s)dan waktu oksidasi 150 menit. Angka penyabunan berkisar antara 194,9 sampai 199,5. Angkaperoksida terbesar adalah 632 mg oksigen/kg minyak pada suhu 180oC, laju alir udara 7,8 l/menit(0,0068 m/s) dan waktu oksidasi 180 menit dan masih belum terbentuk aldehid..Kata kunci : minyak sawit, oksidasi, pemucatan, angka penyabunan, angka peroksida.
Kinetics of Palm Oil Transesterification Using Double Promoted Catalyst CaO/KI/γ- Al2O3 Asri, Nyoman Puspa; Budikarjono, Kusno; Suprapto, Suprapto; Roesyadi, Achmad
Journal of Engineering and Technological Sciences Vol 47, No 4 (2015)
Publisher : ITB Journal Publisher, LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (192.867 KB) | DOI: 10.5614/j.eng.technol.sci.2015.47.4.1

Abstract

Double promoted catalyst (CaO/KI/γ-Al2O3) was used as the catalyst for transesterification of palm oil into biodiesel. The experiment was carried out in a batch reactor consisting  of a three-neck glass flask (500 ml capacity) equipped with a reflux condenser, thermometer and magnetic stirrer. Kinetic study was  carried out with methanol under reflux conditions  at different temperatures (35-75°C) and different times of reaction (1-7 hours). The effects of temperature and time of the reaction on the conversion of palm oil into biodiesel and reaction rate constants were investigated. The results showed that the conversion and rate constants of reaction increased with the increasing of the reaction temperature. The highest conversion of 97% was obtained at 65°C and 5 hours  of reaction time. Meanwhile, the activation energy and the frequency factor were 15.47 kJ/mol and 1.22.102, respectively.
Co-Authors A.A. Ketut Agung Cahyawan W Achmad Roesyadi Nyoman Puspa Asri