Pemanfaatan Tempurung Kelapa sebagai Katalis pada Sintesa Biodiesel dari Minyak Jelantah

Ratna Sari; Ratna Dewi; Lukma Hakim

doi:10.37301/teknos.v1i1.2

Ratna Sari Politeknik Negeri Lhokseumawe
Ratna Dewi Politeknik Negeri Lhokseumawe
Lukma Hakim Universitas Malikussaleh

DOI: https://doi.org/10.37301/teknos.v1i1.2

Keywords: esterification, catalyst, used cooking oil, FFA conversion

Abstract

The use of coconut shell as a catalyst in the esterification reaction of used cooking oil (UCO) has been investigated. In this study, four types of coconut shell-based catalysts were developed by different activation method; application of carbonization process, and impregnation by concentrated sulfuric acid or KOH solutions. The morphology of the four catalysts was different. The catalytic performance test results showed that the highest free fatty acid (FFA) conversion was achieved in the esterification of UCO using a catalyst that was prepared without carbonization and impregnated by KOH (symbolized by KOH-C non). By using a non KOH-C catalyst, the effects of esterification parameters were studied, including the methanol / oil ratio: (1:1.3; 1:1,5 and 1:1,8), the solid catalyst / oil ratio (0.4 - 2.4%) b/v), and reaction times (1, 3, and 5 hours). The maximum 84.26% FFA conversion was obtained from UCO (initial FFA content of 2.76%) in the esterification conditions of oil / methanol volume ratio of 1: 1.5 v/v, catalyst amount of 1.6% b of the oil and 1 hour of reaction time.

References

Atabani, A.E., Silitonga, A.S., Ong, H.C., Mahlia, T.M.I., Masjuki H.H, Badruddin, I.A., and Fayaz H. (2013), Non-Edible Vegetable Oils: A Critical Evaluation of Oil Extraction, Fatty Acid Compositions, Biodiesel Production, Characteristics, Engine Performance and Emmissions Production, Renewable and Sustainable Energy Reviews, 18, 211-245.
Agunantri S, D., Faizah H, dan Vonny S., (2018.) Variasi Waktu Aktivasi Terhadap Kualitas Karbon Aktif Tempurung Kelapa. Jom Faperta UR, 5 (1), 1-10.
Bledzki, A.K.; Mamuna, A.A.; Volk, J., (2010). Barley Husk and Coconut Shell Reinforced Polypropylene Composites: The Effect of Fibre Physical, Chemical And Surface Properties. Composites Science and Technology. Vol. 70, 840–846.

Bhuiya, M.M.K., Rasul, M.G., Khan, M.M.K., Ashwath, N., Azad, A.K., 2016. Prospects of second generation biodiesel as a sustainable fuel – Part: 1 selection of feedstocks, oil extraction techniques and conversion technologies. Renew. Sustain. Energy Rev. 55, 1109–1128.
Effendi Arsad, E., Hamdi, S., (2010). Teknologi Pengolahan Dan Pemanfaatan Karbon Aktif Untuk Industri, Jurnal Riset Industri Hasil Hutan, Vol.2, No.2, 43 – 51.
Vi Tran, T.T., Kaiprommarat, S., Suwadee Kongparakul, S., Reubroycharoen. P., Guan, G., Manh Huan Nguyen, M.H., Samart, C., (2016). Green biodiesel production from waste cooking oil using an environmentally benign acid catalyst, Waste Managemen, http://dx.doi.org/10.1016/j.wasman.2016.03.053.
Ulfah, M., Firdaus, Octavia, S., Suherman, H., Subagjo, (2018). Biodiesel Production Through Waste Cooking Oil (WCO) Esterification Using Sulfated Alumina as Catalyst, IOP Conf. Ser.: Mater. Sci. Eng. 543 012007.