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All Journal Jurnal Teknologi Jurnal Riset, Inovasi, Teknologi & Terapan
Salmyah, Salmyah
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Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Emulsifier Dari Minyak Pliek U Dengan Reaksi Gliserolisis Menggunakan NButanol Sebagai Co-Solvent Dan Katalis MgO Maulana, Teuku Ryan; Faridah, Faridah; Salmyah, Salmyah
Jurnal Riset, Inovasi, Teknologi & Terapan Vol 1, No 2 (2023): Juni
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/ristera.v1i2.4682

Abstract

Emulsifiers or emulsifying agents are one of the oleochemical products that have high economic value. One of the alternative ingredients that can be used as emulsifiers is Aceh palm oil (pliek u oil). In this study n-Butanol solvent is used which can increase the solubility of oil in glycerol so that the glycerolysis reaction can be carried out at low temperatures. This study aims to determine the effect of temperature and solvent ratio on the emulsifier produced. The catalyst used in the reaction is MgO (4% of oil weight), where the test variables used are reaction temperature (70, 80, 90, and 100◦C), 2 hours contact time, and the ratio of n-butanol to oil ( 1: 1, 1: 2, 1: 3 and 1: 4 v / v). The analysis was carried out in the form of an analysis of decreased levels of free fatty acids (ALB) by acid-base titration and Hydrophilic Lipophilic Balance (HLB) analysis to determine the type of emulsifier produced. The results showed that the greatest decrease in free fatty acid levels was found in the solvent to oil ratio of 1: 4 (v / v), and the temperature of 100◦C was 91.26%. The resulting HLB value of 19.68 is categorized into oil in water (o / w). The results obtained from this study indicate that pliek oil can be used as raw material for making emulsifiers using n-Butanol solvent and MgO catalyst.
The Catalytic Performance of Vanadium–Nickel Supported on Zeolite for the Conversion of Crude Palm Oil into Short-Chain Hydrocarbons Rahmahwati, Cut Aja; Salmyah, Salmyah; Sami, Muhammad; Sariadi, Sariadi
Jurnal Teknologi Vol 25, No 2 (2025): Agustus 2025
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v25i2.7030

Abstract

The increasing global demand for fossil fuels, alongside declining domestic oil production, has intensified interest in renewable energy sources. Among Indonesia's abundant biomass options, crude palm oil (CPO) is a promising candidate for biofuel production due to its high triglyceride content and chemical similarity to petroleum. This study explores the catalytic cracking of CPO using a vanadium–nickel catalyst supported on natural zeolite, aiming to evaluate its physicochemical properties and catalytic performance in converting CPO into short-chain hydrocarbons for potential use as biogasoline. The catalyst was synthesized via wet impregnation of natural zeolite with ammonium metavanadate and nickel nitrate hexahydrate, followed by calcination. Characterization using Thermogravimetric Analysis (TGA), X-Ray Diffraction (XRD), and Scanning Electron Microscopy (SEM) confirmed good thermal stability, crystallinity, and surface morphology. Catalytic cracking was performed at elevated temperatures under atmospheric pressure. The liquid products were analyzed using Gas Chromatography-Mass Spectrometry (GC-MS). The results showed that the catalyst successfully facilitated the breakdown of triglycerides, producing mainly medium-chain fatty acids. Pentadecanoic acid (C₁₅H₃₀O₂) was identified as the dominant compound, indicating partial cracking of CPO. However, the product composition still contained oxygenated species, suggesting incomplete deoxygenation. Consequently, the resulting mixture does not yet meet biogasoline specifications. These findings highlight the potential of vanadium–nickel/zeolite catalysts in biofuel conversion processes, while also emphasizing the need for further catalyst optimization or additional processing stages to achieve complete transformation into fuel-grade hydrocarbons.
Pemanfaatan Limbah Nanas (Ananas Comosus L. Merr) Sebagai Penggumpal Alami Pada Proses Pembuatan Tahu Kedelai Elfiana, Elfiana; Salmyah, Salmyah; Aulia, Rauzatul
Jurnal Riset, Inovasi, Teknologi & Terapan Vol 4, No 1 (2025): Desember
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/ristera.v4i1.8626

Abstract

Pineapples contain many useful ingredients, one of which is acid and the enzyme bromelain. This content is also found in pineapple waste which we can use as an alternative coagulating agent for tofu. This content is able to bind proteins into lumps in soybean juice to form curd (clumps of tofu). In this research we used pineapple waste to extract the acid content remaining in pineapple waste. This is also an effort and solution to reduce waste in the surrounding environment and add economic value to pineapple waste which is usually not utilized. This research aims to find out how the volume of pineapple waste juice and soaking time influence the tofu making process. The process method is that the soybeans are soaked for 6 soaking times each; 8; 10; and 12 hours. After soaking the soybeans, they are ground using a grinder, then the soybean juice is filtered from the dregs and boiled for about 15 minutes, then the coagulation process is carried out with variations in the volume of pineapple waste juice, namely 20; 40; 60; 80 and 100 ml. Put the soybean juice that has coagulated into the mold, wait until the tofu forms. The results of the research showed that the best water content, texture and protein content were obtained from making tofu by soaking for 6 hours with 60 ml of pineapple waste coagulating agent. The water content result was 60%, which was liked by many panelists, the texture test was 212.5 gf and the protein value was 15.63%. The results obtained in this research are in accordance with SNI 01-3142-1998.
Co-Authors Aulia, Rauzatul Elfiana Elfiana, Elfiana Faridah Faridah Maulana, Teuku Ryan Rahmahwati, Cut Aja Sami, Muhammad Sariadi Sariadi