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Journal : Satera: Jurnal Sains dan Teknik Terapan

Making Aromatherapy Candles from Patchouli Oil Extract (Pogostemon cablin Benth.) and Crude Glycerol from Used Cooking Oil: Pembuatan Lilin Aromaterapi dari Ekstrak Minyak Nilam (Pogostemon cablin Benth.) dan Crude Gliserol dari Minyak Jelantah Muhammad Taufiq Thahir; Indira Fitriani
Jurnal Sains dan Teknik Terapan Vol. 1 No. 1 (2023): SATERA
Publisher : Unit Penelitian dan Pengabdian Kepada Masyarakat, AK-Manufaktur Bantaeng

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Abstract

Used cooking oil is a compound with a carbon chain that is not quickly decomposing, so it will harm the environment. The effort that can use used cooking oil is to process it into a product with a selling value, namely aromatherapy candles. This study aims to determine the effect of adding crude glycerol and patchouli oil extract to produce long-lasting aromatherapy candles. Wax production in this study consisted of the transesterification of used cooking oil and the extraction of patchouli plants using the maceration method. Aromatherapy candles comprise 24 grams of stearic acid and 6 grams of paraffin. It added crude glycerol with variations of 1.5, 2.5, 3.5, and 4.5 grams. In each addition, variation crude glycerol added one drop and two drops of patchouli essential oil. This experiment's primary research is physical testing, including a melting point test, burning time test, flame test, and aroma test. The sample composition that produces wax with the longest burning time is adding 2.5 grams of crude glycerol and four drops of patchouli essential oil with a burn time of 6 hours and 8 minutes.
Production and Characterization of Bioethanol from Straw Waste Through Hydrolysis and Fermentation Processes Muhammad Taufiq Thahir; Rina; Saadatul Husna
Jurnal Sains dan Teknik Terapan Vol. 2 No. 1 (2024): Jurnal Sains dan Teknik Terapan
Publisher : Unit Penelitian dan Pengabdian Kepada Masyarakat, AK-Manufaktur Bantaeng

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Abstract

Research has been conducted to produce bioethanol from agricultural waste, specifically rice straw, using hydrolysis and fermentation methods. The process stages start from sample preparation, delignification, hydrolysis, fermentation, and purification. The amount of yeast added, and the fermentation time were varied, specifically 2 grams, 4 grams, and 6 grams successively for 3, 5, and 7 days. The results show that ethanol was successfully produced with concentrations ranging from 0.4 to 0.9%. The optimum variation was obtained on the fifth day with the addition of 6 grams of yeast. The obtained ethanol underwent physical characteristic testing including color, odor, viscosity, and density.