Optimasi Pemurnian Minyak Jelantah Menggunakan Lempung Teraktivasi Asam Klorida melalui Variasi Waktu Kontak dan Dosis
Abstract
This study aims to optimize the purification of waste cooking oil using hydrochloric acid (HCl)-activated clay as an adsorbent. Repeated use of cooking oil causes chemical degradation, leading to an increase in free fatty acids and the formation of harmful compounds that pose health risks. Therefore, an effective and economical purification method is required. This research employed a factorial experimental design by varying contact time (20, 40, and 60 minutes) and adsorbent dosage (1, 2, and 3 grams). The effectiveness of the treatment was evaluated based on acid number, color, and odor, and the data were analyzed descriptively. The results showed that activated clay significantly improved the physical characteristics of the oil by reducing unpleasant odor and increasing clarity. The lowest acid number based on contact time was obtained at 40 minutes (2.8 mg NaOH/g), while the optimum adsorbent dosage was 2 grams (1.6 mg NaOH/g). However, the resulting acid values have not yet met the Indonesian National Standard (SNI). These findings indicate that HCl-activated clay has strong potential as a low-cost adsorbent for waste cooking oil purification, although further optimization is required to meet quality standards.
Keywords
Waste Cooking Oil, Adsorption, Activated Clay, Acid Number, Purification
References
Adam, D. (2017). Kemampuan tandan kosong kelapa sawit sebagai adsorben untuk meregenerasi minyak jelantah. Jurnal Edu Science, 4(1), 8–11.
Badan Standardisasi Nasional. (2013). Minyak goreng (SNI 3741:2013). BSN.
Dewi, M., & Hidajati, N. (2012). Peningkatan mutu minyak goreng curah menggunakan adsorben bentonit teraktivasi. Journal of Chemistry, 1(2).
Fitriani, & Nurulhuda. (2018). Pemurnian minyak goreng bekas menggunakan adsorben biji alpukat teraktivasi. Jurnal Pendidikan Matematika dan IPA, 9(2), 65–75.
Istighfaro, N. (2010). Peningkatan minyak goreng bekas dengan metode adsorpsi menggunakan bentonit-karbon aktif biji kelor. UIN Malang.
Ketaren, S. (2008). Pengantar teknologi minyak dan lemak pangan. Universitas Indonesia Press.
Konyuncu, H. (2007). Adsorption kinetics of 3-hydroxybenzaldehyde on native and activated bentonite. Applied Clay Science, 38, 279–287.
Manohar, D. M., Noeline, B. F., & Anirudhan, T. S. (2006). Adsorption performance of Al-pillared bentonite clay for the removal of cobalt (II) from aqueous phase. Applied Clay Science, 31, 194–206.
Mardina, P., Faradina, E., & Setiawan, N. (2012). Penurunan angka asam pada minyak jelantah. Jurnal Kimia, 6(2), 196–200.
Nainggolan, B. S., & Anna, J. (2016). Uji kelayakan minyak goreng curah dan kemasan yang digunakan menggoreng secara berulang. Jurnal Pendidikan Kimia, 8(1), 45–57.
Nurhayati, H. (2010). Pemanfaatan bentonit teraktivasi dalam pengolahan limbah cair tahu. Universitas Sebelas Maret.
Rachmawan, O. (2001). Pengeringan, pendinginan dan pengemasan komoditas pertanian. Departemen Pendidikan Nasional.
Salamah, S. (2008). Pembuatan karbon aktif dari kulit buah mahoni dengan perlakuan perendaman dalam larutan KOH. Prosiding Seminar Nasional Teknoin.
Sauqiyah, I., Amaliah, M., & Hetty, A. (2011). Analisis variasi waktu dan kecepatan pengaduk pada proses adsorpsi limbah logam berat dengan arang aktif. Jurnal Info Teknik, 12(1), 11–20.
Sophia, H., Akmal, M., & Martha, S. (2014). Peningkatan kualitas minyak goreng curah menggunakan adsorben lempung desa gema teraktivasi. Jurnal Photon, 5(1).
Susiwi. (2009). Penilaian organoleptik (Handout). Universitas Pendidikan Indonesia.
Syafiq, A. (2007). Gizi dan kesehatan masyarakat. Raja Grafindo Persada.
Winarno, F. G. (1995). Kimia pangan dan gizi. Gramedia Pustaka Utama.
Winarno, F. G. (2004). Kimia pangan dan gizi. Gramedia Pustaka Utama.
Yustinah. (2011). Adsorbsi minyak goreng bekas menggunakan arang aktif dari sabut kelapa. Prosiding Seminar Nasional Teknik Kimia.
Zian, I., Ulfin, I., & Harmami. (2016). Pengaruh waktu kontak pada adsorpsi remazol violet 5R menggunakan adsorben nata de coco. Jurnal Sains dan Seni ITS, 5(2), 2337–3520.
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