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Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Engineering Materials Science & Nanotechnology

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PEMBUATAN KATALIS HETEROGEN BASA DARI SERBUK KAYU AKASIA Zamhari, Mustain; ., Yuniar; Sari, Dita Indah; Saputri, Nuraldyla Suciaty
KINETIKA Vol. 10 No. 1 (2019): KINETIKA 01032019
Publisher : Politeknik Negeri Sriwijaya

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The purpose of this study was to produce heterogeneous catalyst based on activated carbon as a buffer impregnated with base solution and determine the effect of the concentration of a base solution and impregnation time. The ingredients used include acacia wood sawdust, hydrochloric acid (HCl), sodium hydroxide (NaOH), pottasium hydroxide (KOH) and aquadest (H2O). The study begins with the making of activated carbon from acacia wood sawdust by carbonizing the furnace at 500℃ for 4 hours then washing 0.1 M HCl. After that, 15 grams of activated carbon are impregnated in NaOH and KOH with a concentration of 1, 2, 3, 4 and 5 N for 18, 21 and 24 hours. After the implementation, the catalyst was analyzed by AAS, FTIR and SEM. The best condition that produced the catalyst with the highest content after impregnation, which was 80.92% for NaOH dan 85.63% for KOH, was obtained at a concentration of 5 N for 21 hours. The application of catalysts heterogeneus base in biodiesel was made with a reaction time of 120 minutes at 60℃ and the use of 3% b/b of used cooking oil.
PENGARUH AGITASI DAN WAKTU FERMENTASI PADA PEMBUATAN BIOETANOL DARI PATI SINGKONG KARET (Manihot glaziovii) ., Yuniar; Aznury, Martha; Resky, Resky
KINETIKA Vol. 11 No. 1 (2020): KINETIKA 01032020
Publisher : Politeknik Negeri Sriwijaya

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Rubber Cassava (Manihot glaziovii) is a tuber that is not a food ingredient because it contains the chemical element cyanide (HCN) which is toxic. The starch content in sweet potatoes reaches 98.5%. This study aims to determine the effect of agitation and fermentation time on the levels of biethanol using a 3 liter fermentor substrate used is cassava rubber (Manihot glaziovii). The process of making starch by cutting and peeling rubber cassava and then washing it with clean water after that shredded it with grated while adding water after grating the cassava pulp porridge at a temperature of 600C so as to get the starch. The dried cassava rubber starch was sieved to obtain a more homogeneous starch particle size. Furthermore, the hydrolysis process involves mixing 800 grams of cassava rubber starch with 2 liters of distilled water. In the fermentation process variation of stirring speed and time of fermentation. The results showed that The best stirring speed in this research is 300 rpm and the best fermentation time is 48 hours with bioethanol levels obtained at 10%.
Co-Authors Martha Aznury Mustain Zamhari Resky, Resky Saputri, Nuraldyla Suciaty Sari, Dita Indah