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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 7 Documents
 1 
Search results for , issue "Vol 8, No 1 (2023): February 2023" : 7 Documents clear
Preparation and Characterization of Catalyst Zn/Al2O3 Catalyst using Dry and Wet Impregnation Method Selpiana Selpiana; David Bahrin; Muhammad Ridho Habibie; Faras Saskia Samara
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 8, No 1 (2023): February 2023
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v8.i1.25

Abstract

Metal supported catalysts are used in many catalytic cracking processes. Experiments have shown that the increasing of metal loaded within the catalyst support may affected the increasing of cracking process conversion and selectivity. Therefore, a fundamental understanding of increasing the metal loaded is needed. In this study, Zinc on Alumina supported catalyst was prepared using the dry and wet impregnation methods to obtain the best amount of Zn metal content in Al2O3 as catalyst support with good characteristics for catalytic cracking. The prepared precursor solution in wet impregnation method was varied in concentration. While the dry impregnation method was varied in drying temperature. The Atomic Absorption Spectroscopy test results the metal content of Zn on the variation of precursor solution concentration on 0,5 M; 2,5 M; 4,5 M  are 1,06%; 9,65%; 15,91% and in the variation of the drying temperature at 25ºC, 50ºC, and 80ºC respectively are 18,32%; 12,48%; and 39,07%. Characteristics analysis through X-Ray Diffraction, Brunauer-Emmet-Teller, and Scanning Electron Microscopy tests have also been carried out on samples with the highest metal content of 39,07% and samples with the lowest metal content of 1,06%.
Characteristic Study of Biodiesel from Used Cooking Oil using Nipah Skin Ash as a Heterogeneous Catalyst Zainuddin Ginting; Rizka Mulyawan; Meriatna Meriatna; Tata Tirani; Asnadia Asnadia; Luthfi Mughni Anisa Haryono
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 8, No 1 (2023): February 2023
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v8.i1.34

Abstract

One type of renewable alternative energy that has great potential to be developed is biodiesel. Biodiesel is a fuel consisting of a mixture of mono-alkyl esters of long-chain fatty acids made from renewable sources such as vegetable oils or animal fats. Such as vegetable oils or animal fats. One of the vegetable oil products that can be used as feedstock for biodiesel production is used cooking oil. Used cooking oil is used oil. The purpose of this research is to study the characteristics of the effect of catalyst mass, the ratio of used cooking oil mole to methanol mole, and the effect of adding THF 1:1 co-solvent on the purity of biodiesel using heterogeneous catalyst ash derived from Nipah fruit skin calcined at 500°C for 4 hours. The process variables were transesterification reaction time 60, 90, 120, and 150 minutes, a mole ratio of methanol to oil 1:19, 1:21, and 1:23 with the addition of THF: methanol v/v 1:1 co-solvent. Biodiesel properties such as density, viscosity, moisture content, and acid number were evaluated and compared with the Indonesian National Standard (SNI). The characteristics of biodiesel were obtained with a density of 860.2 Kg/m3 and a viscosity of 2.37 mm2/s. They contained 44.14% Palmitic acid and 43.04% Octadecenoic acid (oleic), following the Indonesian National Standard (SNI). The maximum yield obtained was 93.3598% using a mole ratio of oil: methanol 1:23 at 60°C for 120 minutes, TFT 1:1, and 3% catalyst mass. The results obtained in this study indicate that heterogeneous catalysts made from kapok skin can be used to produce biodiesel. Adding TFT co-solvent can increase biodiesel production and methyl ester yield so that high purity is obtained.
Delignification and Adsorption Research of Bioethanol Process using Pseudostem of Musa Balbisiana (Pisang Klutuk) as the Blending Raw Material to Gasohol Rafit Arjeni; Abu Hasan; Aida Syarif
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 8, No 1 (2023): February 2023
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v8.i1.1

Abstract

Indonesia is a country that has the most energy sources in the Southeast of Asia and the fifth in Asia-Pacific subsequent to China, India, Japan and South Korea. Energy usage in Indonesia in 2016 was still dominated by 47% fuel oil. If the energy usage increases continuously, energy sustenance and resilience in Indonesia will be plagued. Therefore, there is a necessary to utilize the alternative energy sources that would be earth-friendly as well New and Renewable Energy (EBT) like bioethanol. Bioethanol can be produced by organic wastes, pseudostem of Musa Balbisiana (Pisang Klutuk) as the example. This research is focused on the study of delignification and adsorption of the process of bioethanol using pseudostem of Musa Balbisiana as the blending raw material to gasohol. The process started with the pre-treatment and delignification of the pseudostem of Musa Balbisiana with the sorts of NaOH concentration including the following of 10%, 20%, 30% and 100oC, 125oC, 150oC, 175oC, dan 200oC for the heating temperatures. In delignification, it can be stated that the concentration of 10% NaOH on 150oC temperature produced the finest cellulose and lignin content with the amount of 81,3% cellulose and 10,1% lignin. The pseudostem fibers that have passed the process of delignification, was done to the process of hydrolysis and fermentation for producing bioethanol. The result of Bioethanol was carried out to the process of distillation for separating bioethanol and water. Continuing the process, bioethanol was purified in adsorption and distillation process. In adsorption, the 5gr, 10gr, 15gr, 20gr, and 25gr adsorbent alloyed to the purified bioethanol, and it can be claimed that the highest rate of purified bioethanol is 20gr with the 99,11% bioethanol content. The 99,11% bioethanol content was blending with Pertalite with the ratios of 5:95, 10:90, 15:85, 20:80, and 25:75, thereafter it was analyzed the RON content which obtained the highest point that is 97,48 on 25:75 ratio.
Synthesis of Chitosan−Al2O3 Composite using the Sol-Gel Method and Its Application in Photodegradation of Methylene Blue Desnelli Desnelli; Ipro Hati Padilah; Maria Ulfa; Eliza Eliza; Ady Mara; Fatma Fatma
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 8, No 1 (2023): February 2023
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v8.i1.40

Abstract

The research on synthesis of composites Kitosan-Al2O3 by the sol-gel method for photodegradation of methylene blue has been carried out. Chitosan-Al2O3 varied by mass ratios (1:1), (1:2) and (1:3). The product were characterized using XRD and UV-DRS. Chitosan-Al2O3 ratio (1:1) were characterized by SEM-EDS. The best material will be used to degrade the mehtylene blue by various condition, i.e., effect of pH, contact time and initial concentration of methylene blue. The Chitosan-Al2O3 (1:1) composite was chosen as a material for degrading methylene blue. The result of characterization using XRD showed crystal size the Chitosan- Al2O3 (1:1) composites result were 3,17 nm. UV-DRS characterization, The band gap energy is 1,35 eV. The morphological condition by SEM of Chitosan-Al2O3 ratio (1:1) showed a spherical shape with a small size, and a porous surface the constituent elements C (4.93%), O (33.31%), Na (13.92%), Al (45.59%) dan Zn (2.24%). The degradation process showed the effective condition were pH 10 and contact time of 200 minutes. The optimum concentration of methylene blue at 20 ppm with percent effectivity of concentration reduction methylene blue i.e. 79.35% and the result of TOC analysis i.e. 22,36%. The Chitosan-Al2O3 can be used to degraded the Methylene blue.
Antibacterial Activity Test of Tropical Plants (Morinda citrifolia) and (Melaleuca leucadendra) against Pneumonia-causing Bacteria Nadila Pitriani; Hermansyah Hermansyah; Ferlinahayati Ferlinahayati
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 8, No 1 (2023): February 2023
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v8.i1.8

Abstract

This study aims to determine the antibacterial activity of tropical plants against bacteria that cause pneumonia. The initial stage is to prepare samples of tropical plants that are macerated with methanol and produce a thick extract, namely 38.3881 grams of noni fruit with a yield of 13.422%, and cajuput leaves as much as 11.211 grams with a yield of 3.38%. The next step, each sample was fractionated using VLC then produced ethyl acetate fraction and methanol fraction. Bacterial activity test was carried out by disc diffusion method, and the MIC value was determined by liquid dilution method using UV-Vis spectrophotometry. Based on the results of antibacterial testing, the noni fruit extract and cajuput  extract obtained the most active fraction in response to inhibiting bacteria causing pneumonia (S. pneumonia, S. aureus and K. pneumoniae) was the ethyl acetate fraction with a strong average response zone of inhibition up to very strong with MIC value of ethyl acetate fraction from noni fruit extract 6250 ppm each and MIC value of ethyl acetate fraction from cajuput extract (Melaleuca leucadendra) 390.625 ppm each; 390.625 ppm; and 195.3125 ppm.
Polypropylene and some Esterified Plants' Fibers Bio-based Composites Nawal M Suleman; Eiman M. Eltyeb; Abuelgasim A. A. Mohammed
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 8, No 1 (2023): February 2023
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v8.i1.48

Abstract

This study aimed to synthesize bio-based composites from polypropylene and some esterified plants' fibers extracted from khimp (leptadenia pyrotechnica), leaves, and fibers of the date palm tree (Phoenix dactylifera L.). 24 composites in form of sheets were synthesized by injection molding technique using a modified manually operated injection molding machine. Properties like density, melting range temperature, melt flow rate, molecular weight, melt viscosity and water absorption capacity were determined for each synthetic composite. The study employed MFR and ordinary laboratory tools. The study proved that the synthesized composites are of good process ability, physical and thermal properties and have more densities than polypropylene itself
Removal of TDS, Fe, Oil and Greases of Laboratory Wastewater using Ceramic Membrane Technology Destri Yunita; Muhammad Faizal; Suheryanto Suheryanto
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 8, No 1 (2023): February 2023
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v8.i1.17

Abstract

Biochemistry Laboratory and Medicinal Chemistry as supporting facilities for practicum and research results in wastewater, which contains organic matter and suspended solids, such as TDS, Fe, Oil and Greases. If wastewater discarded directly to the drainage without passing sewage treatment system, then it potentially pollutes the environment and endangers the lives of living creatures. The purpose of this research is to evaluate the effectivity of the filtration system using ceramic membrane filtration technology to reduce the amount of TDS, Fe, Oil and Greases on laboratory’s wastewater. The filtration process is using ceramic membrane made of clay, activated carbon from lignite, and Fe powder. Pretreatment is done with the neutralization using NaOH 5N and coagulation using aluminum sulfate 400 mg/L. Variable in this research is the operating time of 5 and 20 minutes with operating pressure 1 kg/cm2. The result of this research shows that after 20 minutes operating, the reduction percentage of TDS, Fe, Oil and Greases after the process using ceramic membrane filtration technology were 0.97; 96.01; and 91.03 %, respectively. As the conclusion, the ceramic membrane is able to reduce the parameter of wastewater optimally. Keywords: ceramic membrane, coagulation, laboratory wastewater, lignite coal 

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