PIROLISIS SABUN LOGAM DARI ASAM OLEAT UNTUK PRODUKSI BIOHIDROKARBON HIJAU

Pandit  Hernowo; Alif Gita  Arumsari; Ayang Hisna Zainatul  Aliyah; Violica Celloce  Njurumana; Siti  Patimah

doi:10.24961/j.tek.ind.pert.2024.34.1.35

Pandit Hernowo Department of Chemical Engineering, Fakultas Sains dan Teknologi, Institut Sains dan Teknologi Al-Kamal , Jakarta, Indonesia
Alif Gita Arumsari Department of Chemical Engineering, Fakultas Sains dan Teknologi, Institut Sains dan Teknologi Al-Kamal , Jakarta, Indonesia
Ayang Hisna Zainatul Aliyah Department of Chemical Engineering, Fakultas Sains dan Teknologi, Institut Sains dan Teknologi Al-Kamal , Jakarta, Indonesia
Violica Celloce Njurumana Department of Chemical Engineering, Fakultas Sains dan Teknologi, Institut Sains dan Teknologi Al-Kamal , Jakarta, Indonesia
Siti Patimah Department of Chemical Engineering, Fakultas Sains dan Teknologi, Institut Sains dan Teknologi Al-Kamal , Jakarta, Indonesia

DOI: https://doi.org/10.24961/j.tek.ind.pert.2024.34.1.35

Abstract

Metal soap pyrolysis is an attractive route for green gasoline fuel production because it is a straightforward process with no hydrogen supply needed and is operated under a pressure atmosphere. Pyrolysis of soap made from oleic acid is carried out via the catalytic route in a Py-GC reactor. Bivalent metals such as Zn, are evaluated as catalysts in pyrolysis. The preparation of a mixture of oleic acid: NaOH: Zn metal was studied at a concentration of 1:1:1. Thermal stability analysis of pyrolysis was studied at a temperature of 250^oC with a heating rate of 10, 20, 40^oC/min. This research aimed to figure out the characteristics of the relationship between raw materials, metal soap, and the bio-hydrocarbon products produced. Experimental results show that Zn metal can supply good temperature stability during the pyrolysis heat degradation process. Zn metal also can act as a catalyst, helping the decarboxylation reaction of oleic acid to become short-chain bio-hydrocarbons. The yield of short-chain bio-hydrocarbons C₉-C₁₈ was 0.04-7.33%w/w, meanwhile, long-chain bio-hydrocarbons reached 48.07%w/w. The presence of oxygenate compounds is due to the low quality of the raw materials. A decrease in the quality of raw materials can be caused by poor handling and storage of oleic acid as evaluated by large saponification, acid, and peroxide numbers.

Keywords : biohydrocarbons, oleic acid, metal soap, pyrolysis, TGA

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