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INDONESIA
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)
Published by Universitas Sriwijaya
ISSN : 25409395     EISSN : 25409409     DOI : -
Core Subject : Science, Social,
Biochemistry, Genetics & Molecular Biology Chemistry Environmental Science
Indonesian Journal of Fundamental and Applied Chemistry (IJFAC) is an international research journal and invites contributions of original research articles as well as review articles in several areas of chemistry. The journal aims to publish refereed, high-quality research papers with significant novelty and short communications in all branches of chemistry. Papers which describe novel theory and its application to practice are welcome, as are those which illustrate the transfer of techniques from other disciplines. IJFAC calls for papers that cover the following fields: Biochemistry Inorganic chemistry Physical chemistry Organic chemistry Analytical chemistry Applied Chemistry All papers are peer reviewed by at least two referees. Papers presented at conferences are peer reviewed and selected with the same standards as individually submitted papers. They therefore have the same archival value. Article should be submitted by the Online Submission Module at www.ijfac.unsri.ac.id or email to ijfac@unsri.ac.id
Arjuna Subject : -
Articles 6 Documents
 1 
Search results for , issue "Vol 7, No 1 (2022): February 2022" : 6 Documents clear
Synthesis and Characterization Catalyst γ-Al2O3 and Al/γ-Al2O3 using XRD Analysis Selpiana Selpiana; David Bahrin; RR Yunita Bayu Ningsih; Aditia H Akbar; Ayu Permatasari
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 7, No 1 (2022): February 2022
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v7.i1.26

Abstract

Catalysts have an essential role in chemical processes because they can control reactions and produce the desired product. In general, catalysts function to speed up chemical reactions that can take place by lowering the activation energy. By decreasing the activation energy, the minimum energy required for the collision is reduced so that the reaction can occur faster. Selection of the suitable material to be used as a catalyst is an effort that must be made to achieve a successful process and obtain cost efficiency. The choice of material as metal and support was the aim of this research. Aluminum (Al) was the material chosen as metal and γ-Al2O as the support. The method used in the synthesis of this catalyst was dry impregnation. It is hoped that more metal will stick to the support. In this study, catalyst synthesis was carried out with two variations of treatment. The first treatment was using Al as metal and γ-Al2O3 as the support. The second treatment did not use metal only γ-Al2O3 as the support. The resulting material was characterized by XRD analysis. The analysis found that in the diffractogram pattern of Al /γ-Al2O3, the peaks appeared at 2θ = 37o; 46o and 67o. The impregnation process went well. Aluminum was evenly distributed (sticks) to the pore surface of the support and entered the poresKeywords: Catalyst, metal-support, Al/γ-Al2O3, dry impregnation, XRD
Analysis of downdraft low rank coal performance gasification by variations coal to syngas product Erwin Erwin; Aida Syarif; Muhammad Yerizam
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 7, No 1 (2022): February 2022
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v7.i1.01

Abstract

Coal resources are inclusive (reserves are part of the resource), of which 48% is located in South Sumatra, with 70% of the deposits being brown or low-quality coal. With the high amount available, the direct use of coal has several shortcomings, one of which is that coal releases gases (CO2, N2O, NOx, SOx and Hg) which cause global warming. Coal gasification is a process for converting solid coal into a gas mixture that has a fuel value. Coal gasification will produce producer gas in the form of synthetic gas (syngas) with the main components consisting of carbon monoxide (CO), hydrogen (H2), and methane gas (CH4). By converting coal using gasification as a clean energy producer, a blower as a regulator of air flow, a cyclone as a tar separator and a gas cooler. Based on the results of testing the variation of coal used, the variation of 5515 Kcal / Kg coal has a rapid rise in temperature and is able to produce a flame for 115 minutes. with the composition of Syngas CO and CH4 of 12.4% an 1.2%, while the coal variation of 4640 kcal/kg produces the highest H2 of 6.9%. Coal 5515 kcal/kg produces the largest percentage of syngas conversion, carbon conversion, Low Heating Value, power output and stove efficiency, namely 13.46%, 70.397%, 2.427 MJ/kg, 18.403 KW and 31.23%
Some of South Sumatran Plants Containing Alkaloids Eliza Eliza; Dasril Basir
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 7, No 1 (2022): February 2022
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v7.i1.32

Abstract

A phytochemical survey for alkaloid-containing plants has been conducted in South Sumatra including traditional medicinal plants. During the survey 180 satisfactory herbarium sample were obtained and all of them were tested for alkaloids. The results showed that 33 species gave a positive test for alkaloids, and high alkaloid contents were shown by: Alstonia scholaris, Alstonia angustiloba, Ervatamia coronariaa, Voacanga foetida Bl. K. Schum, Litseaacceden toides K & V, Litsea angualata, Litsea tomentosa, Fibraurea chloroleuca Miers (root), and Uncaria cordata (Lour.) Merr. The aboved survey was also continued to be an intensively phytochemical work focusing on alkaloid of Fibraurea chloroleuca Miers root.  A quaternary isoquinoline alkaloid as a yellowish crystal, m.p. 214-215 oC; MS (FAB) m/z 352 has been successfully isolated and tested for antibacterial activity.  This isolated alkaloid significantly inhibited Bacilus substilis, Shigela dysentriae, Staphylococus aireus, and Pseudomonas sp growth at 1 mg/mL. As a result, all of these alkaloid-containing plants are potential to explore their alkaloids and utilitarian for traditional medicines.Keywords: Alkaloids, traditional, medicines, south sumatra, plants
Design of Dry Cell HHO Generator using NaCl Solution for Hydrogen Production Arif Budiman; Muhammad Yerizam; Yohandri Bow
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 7, No 1 (2022): February 2022
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v7.i1.8

Abstract

Excessive use of electricity produces emissions, as well as carbon will have impact on global warming because electricity mostly still using fossil-based energy. Usage of other alternative energy is beneficial to reduce dependence on the use of fossil fuels. Researchers are currently working to reduce the use of fossil energy by using renewable energy. Among the most common alternative energies found is water, so this research focuses on designing dry cell type HHO (Hydrogen Hydrogen Oxygen) Generator technology with hydrogen gas water electrolysis. The HHO generator functions to break water (H2O) into hydrogen atoms and oxygen atoms, known as HHO. Electrolysis testing using NaCl and a storage tube to see the rise and fall of water from the gas produced. NaCl used weighing 20 grams, 50 grams, 75 grams, and 100 grams dissolved in 500 cc of water. The results of the data obtained, many uses of NaCl produce hydrogen gas faster, the data shows 100 grams of NaCl at 180-210 seconds produces a gas volume of 175 CC compared to 20 grams produces a gas volume of 75 CC, 50 grams produces 125 CC, and 75 grams produces 150 CC
Production of Bioethanol from Sugarcane Bagasse with Variations in Yeast Mass Hery Gunawan; Eka Sri Yusmartini; Elvidiah Elvidiah
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 7, No 1 (2022): February 2022
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v7.i1.16

Abstract

Energy availability is an absolute requirement in national development efforts at present or in the future. The existence of limited energy sources, while the need continues to increase requires alternative sources of fossil energy. Bioethanol is one of the bioenergy which is an alternative to replace the use of fossil fuels. This research aims to obtain bioethanol by utilizing bagasse as raw material. The manufacture of bioethanol consists of several stages, among others, preparation of raw materials by drying bagasse and then mashing it to obtain bagasse with a size of 100 mesh, thermal hydrolysis process with the help of sulfuric acid solution with varying concentrations, fermentation process carried out with the help of yeast, distillation process, and content analysis. ethanol. The method used is hydrolysis with sulfuric acid. Furthermore, the hydrolysis with sulfuric acid at 150 oC for 1 hour to form a slurry. The fermentation process uses a mass variation of yeast Saccharomyces Cerevisiae with a variation of 6.75, 8.75, 11.25, 13.75, and 16.25 g  for 4 days with pH 5, room temperature and anaerobically. The best bioethanol content in the study with a mass variation of the yeast Saccharomyces Cerevisiae with a pH of 5 and a fermentation time of 4 days was 98.93% with a yield of 57.6 mLKeywords: Bagasse, Bioethanol, Saccha sromyces cereviceae, Yeast mass, Fermentation
Preconcentration of Cadmium assisted with sonication using Dowex 50WX2-200 Resin Siti Nuraini; Yuniar Yuniar
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 7, No 1 (2022): February 2022
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v7.01.21

Abstract

Preconcentration of Cd in water has been carried out using Dowex 50WX2-200 resin as a solid phase extractor. The extraction process was carried out with a sonicator. Elution of Cd which was adsorbed by the resin was released again using 1M HNO3, then Cd was measured using Flame-Atomic Absorption Spectrophotometer. In this study, the effects of pH, sample solutian sonication time, elution time of Cd adsorbed and eluent volume were studied. The results of the optimization of preconcentration conditions were obtained at pH 3, the duration of the sonication process for Cd adsorption was 15 minutes and the elution time was 7.5 minutes and the eluent volume of 1M HNO3 was 10 ml. Method validation was carried out using a Certificate Reference Material, CRM for clean water at optimum conditions. The Accuracy and precision measurement results were obtained 96% recovery and 11% RSD (n=3) which showed the accuracy still in the ranges of acceptance criteria according to the AOAC, between 70% -125 and precision with % RSD < CV Horwitz 14%. Finally, preconcentration of Cd metal in water was successfully with sonicator assistedKeywords: Cd, Dowex 50WX2-200, Flame-SSA.

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