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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 9 Documents
 1 
Search results for , issue "Vol 7, No 3 (2022): October 2022" : 9 Documents clear
The Impacts of HCl Concentration and Length of Time to Mesocarp in Producing of Bioethanol M. Amir; Leila Kalsum; Yohandri Bow
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 7, No 3 (2022): October 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.i3.86

Abstract

Studies about renewable energy are evolved continuously to decrease the needs of fuel oils that were diminished. One of the alternative energy sources that can be evolved is bioethanol due to the high amount of oxygen component in it hence it can be combustible and eco-friendly. Mesocarp is farming and trading waste of Cocos Nucifera (Coconut) that contains 40% lignin, 44,4% cellulose, and 15% hemicellulose. Delignification is a process of removing lignin from the materials thus it can produce the high purity of cellulose. As long as this, there were numerous studies that researched about lignocellulose biomass, however the least studies researched the impact of using delignification. Thereby, this study was done for figuring out the impact of HCl concentration and length of time to the decreased lignin content and the quality of bioethanol. The points of impacts that being focused on were 1M, 2M, and 3M HCl concentration, whereas the points of length of time impacts were about 60 minutes, 90 minutes, 120 minutes, 150 minutes, and 180 minutes. The decreased lignin content that was obtained is about 18,5% and the finest bioethanol is 97,38 %, 15oC for flash point, 3,8402 cPs for viscosity, and 0,8252 gr/cm3 for density from delignification using 3M HCl for about 150 minutes. Greater HCl concentration to delignification, greater quality of bioethanol that is produced, therefore can be applied to alternative fuel oils for vehicle. Keywords: bioethanol, delignification, HCl, mesocarp
Synthesis and Characterization of CaO-Zeolite Catalyst by Sonochemical Engineering Method Widyarini Widyarini; Muhammad Djoni Bustan; Sri Haryati
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 7, No 3 (2022): October 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.i3.113

Abstract

Calcium Oxide (CaO) loaded on zeolite was categorized as a heterogeneous catalyst. The utilization of CaO catalyst could be implemented in catalytic pyrolysis enhance gaseous production. In this paper, CaSO4.2H2O is an active site embedded in natural zeolite, and the activity of the CaO-Zeolite catalyst is synthesized by a sonochemical impregnation-assisted drying process and calcination. The stirrer impregnation method was used as a control. CaO-Zeolite catalyst characterization and properties were identified via Scanning Electron Microscopy- Energy Dispersive X-Ray (SEM-EDX).The activation experiments were performed at an oven temperature of 120oC for 5 h and a calcination temperature of 300oC for 2 h. The synthesized catalysts of sonochemical were performed at 20 minutes, 20 kHz, and 1200 Watt, and the synthesized catalyst of stirrer were performed at 120 minutes, 1500 rpm, and 1000 watts. The experimental results revealed that the characterization of the catalysts prepared by the sonochemical method was better than that of the stirrer. Specifically, obtained CaO-Zeolite catalyst with Ca wt % increased from 0.86 wt% NZ (natural zeolite)  to (11.3 wt%, 14.15 wt% and 23.48 wt%) of sonochemical and (11.82wt%, 13.95 wt% and 20.64wt%) of stirrer. The results demonstrated that Ca wt%  by sonochemical in 20 minutes dispersed at support surface (zeolite)  more effective than stirrer in 120 minutes. These results were impacted by acoustic cavitation and shockwave of ultrasonic on solid-liquid transport and distribution. On the other side, sonochemical assisted the activation technique to minimize particle size and allowed metal oxide (CaSO4.2H2O) to be dispersed uniformly into the pores structure of the zeolite. The utilization of sonochemical in CaO-Zeolite synthesizing enhanced catalyst activity. Keywords: CaO/Zeolite catalyst, Calcination, Drying, Sonochemical Impregnation, Ca weight percentage, Characterization
Coal Dust Characteristics and Its Association with Air Quality in Palembang Coal Unloading Station Arie Wahyudi; Hilda Zulkifli; Susila Arita; Rico Januar Sitorus
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 7, No 3 (2022): October 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.i3.92

Abstract

The problem of coal dust due to the accumulation and loading of coal to barges for shipping has not been studied optimally. This study aimed to investigate the characteristics of coal dust and the air quality of the three coal industries. Coal dust characteristics were tested through proximate analysis, XRD, XRF, and SEM. Meanwhile, air quality is viewed from exposure to gases that cause emissions (CO, NO2, and SO2), PM10 and TSP, humidity, and temperature. Coal dust consists of SiO2, Al2O3, and Fe2O3 as the main components with high ash. Exposure to SO2 and TSP can potentially exceed the annual threshold value.
Standardization in ethanolic extract of Paronema canescens leaves Dirli Fahmi Rizal; Muharni Muharni; Heni Yohandini; Ferlinahayati Ferlinahayati
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 7, No 3 (2022): October 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.i3.136

Abstract

The development of traditional medicinal plants as raw materials for herbal drugs needs to be standardized. The aim of the research was to standardise ethanol extract of Paronema. canescens leaves.  The extract was determined specific and non-specific parameters. The organoleptic of  extract has a thick consistency, the colour dark brown has a characteristic non-aromatic odour, and has a slightly bitter taste. The soluble content in water and ethanol of 48.1% and 80. 3%, respectively. The extract contains triterpenoid compounds, steroids, flavonoids and phenols with water content was 8.33%, total ash content of 5.36%,  acid insoluble ash content of 2.16%,  drying shrinkage of 8.0%,  specific gravity of 1.255 g/ml, metal contamination Pb < 0.0628 mg/g, Cd 0.0077 mg/Kg and Cu 0.00282 mg/g, total bacterial  of 0.9 x 101 colonies/g and mould contamination with a value of 0.15 x 101 colonies/g, respectively. Based on the data, all the parameters were measured to meet the standardKeywords: Paronema canescens, standardised, specific parameter, non specific parameter
Performance Analysis of Ceramic Membranes in Clean Water Treatment on River Water Quality Yogi Astrada; Poedji Loekitowati Hariani; Muhammad Faizal
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 7, No 3 (2022): October 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.i3.100

Abstract

The clean water treatment process changes the physical, chemical, and biological properties of water so that it meets the requirements for use as drinking water or daily needs. The purpose of this research is to analyze the performance of ceramic membranes in processing water from the Kelekar River into clean water using an environmentally friendly microfiltration–adsorption–ceramic membrane integrated process. The research was carried out from January to April 2022 at the Chemical Engineering Laboratory of the Sriwijaya Polytechnic. The sampling location for this research is Kelekar River, Karang Raja Village, East Prabumulih. The main tools and materials are a series of water filters (microfiltration–adsorption–ceramic membrane) and river water. The analysis results show that a series of microfiltration-adsorption-ceramic membrane integrated process water treatment equipment can be used to treat river water into clean water. Based on the analysis of river water quality parameters, such as BOD5, iron (Fe), manganese (Mn), nitrate (NO3-), ammonia (NH3-N), and total coliform bacteria after water treatment were within environmental quality standards. Meanwhile, COD and nitrite (NO2-) were still not meeting the environmental quality standards set by Government Regulation of Republic Indonesia No. 22 of 2021 concerning the implementation of environmental protection and management.
Utilization of Polypropylene (PP) Plastic Waste with Waste Oil Palm Empty Brunch for an Alternative Fuels Putri Sakinah Harahap; Hutwan Syarifuddin; Ulyarti Ulyarti; Nazarudin Nazarudin
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 7, No 3 (2022): October 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.i3.143

Abstract

The need for plastic corresponds with the annual rise in population. Meanwhile, plastic waste that is improperly managed can negatively influence the environment. Therefore, a more promising alternative recycling process is needed to convert this waste into oil by cracking, and the process is possibly assisted by adding empty palm oil bunches. This study examines how modifications in the ratio of oil palm empty bunches to Polypropylene (PP) plastic waste influence the percent liquid produced by cracking and the heating value during the process. It is a completely randomized design (CRD) with variations in the ratio of plastic raw materials: oil palm empty fruit bunches 1:0, 1:1, 1:2, and 1:3 at a temperature of 450°C and 40 minutes duration. This resulted in liquid conversion from cracking of 80% at 1:1 of PP: TTKS 1:1. However, the addition of oil palm empty fruit bunches to polypropylene polymers does not affect the increase in the percent conversion outcomes. The results of the heat test analysis show the value of 6.681 MJ/kg and 1.512 MJ/kg. Keywords: Cracking, catalytic cracking, polypropylene plastic, biomass, alternative energy
Comparison of Acidity Test Method of Nickel Phosphate Silica Catalyst for Production Levulinic Acid from Glucose Qodria Utami Putri; Hasanudin Hasanudin; Ady Mara
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 7, No 3 (2022): October 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.i3.106

Abstract

The reaction of levulinic acid production from glucose has a reaction stage that requires a high temperature and high activation energy so that in this levulinic acid production reaction a catalyst is needed. The required catalyst must have a lewis acid site and a bronsted acid site so that the acidity of the catalyst is very influential for the successful production of levulonic acid. Silica nickel phosphate catalysts have lewis acid sites from Ni metal and bronsted acid sites from phosphoric and silica groups. The acidity of the catalyst was measured using the pyridine and ammonia adsorption method and the acidity center strength method using the TGA-DTA base adsorption-desorption. The adsorption of ammonia and pyridine uses the gravimetric method so that it can easily obtain the amount of total acidity of the catalyst and the acidity of the catalyst surface while the TGA-DTA method shows the acid strength of the actual catalyst, which is the real state of the catalyst when catalyzing a reaction and shows the catalyst's resistance to high temperatures. These two methods of measuring acidity have the same disadvantage that they cannot show and know the number of lewis acid sites and bronsted acid sites.
POME Processing with Bioremediation Using Indigenous Bacteria (Bacillus toyonensis and Stenotrophomonas rhizophila), Electrocoagulation, and Bioremediation assisted with Electrocoagulation Methods Bambang Yudono; Sari Ulfariani; Fatma Fatma; Parwiyanti Parwiyanti; Eka Lidiasari
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 7, No 3 (2022): October 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.i3.122

Abstract

Palm oil mill effluent (POME) is wastewater containing dissolved materials with concentrations above the threshold. Generally, POME processing in Indonesia uses an open pond system. It is less efficient because it requires large areas and causing greenhouse gas effects. This research aims to improve the POME processing, three methods were studied; bioremediation using enrich indigent lypholitics bacteria (Bacillus toyonensis and Stenotrophomonas rhizophila.), electrocoagulation system, and combination of those methods. The parameters were measured were oil and fat contents, COD, pH, TSS, TDS, Fe and Cu metals. In the electrocoagulation method, the electrodes were used iron electrodes with a variation of electrical voltage 1.5, 3, 4.5 and 6 V. The bioremediation using indigent bacteria results in the removal of oil and fat -74.62%, COD -52.44%, TSS -43.11% and pH 6.38 at the incubation time for 6 days, TDS 21.42%, Fe -5.3% and Cu -64.70%. The electrocoagulation methods results oil and fat removal were -93.27%, COD was -85.71%, TDS -39%, TSS -84%, Cu -46%, Fe +92.35%, and pH 11.39 at a voltage of 6 V for 6 h. The combination of the two methods can reduce oil and fat levels by -87.39%, COD -56.70%, TDS -0.42%, TSS +15.88%, Cu -23.33%, Fe +93.74% and pH 8.82. The three methods were studied can improve the POME processing significantly.
In silico screening of natural compounds from Jatropha curcas (Euphorbiaceae, Linn) and Jatropha gossypifolia (Euphorbiaceae, Linn) against SARS-CoV2, a COVID-19 main protease, using molecular docking approach Emmanuel Kitete Mulongo; Jason T Kilembe; Gedeon Ngiala Bongo; Koto-te-Nyiwa Ngbolua; Dorothée Tshilanda Dinangayi; Damien Sha Tshibey Tshibangu; Pius T Mpiana
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 7, No 3 (2022): October 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.i3.148

Abstract

SARS-Cov2, the COVID-19 main protease is set to be a good target for potential inhibitors especially from plants. 6LU7, the crystal structure of COVID-19 has been used for docking with natural compounds from Jatropha curcas and Jatropha gossypifolia. The following compounds identified within J. curcas have given good binding affinities than Azythromycin (control sample): 2-methyl anthraquinone, Curcusone D, Palmarumycin CP1, Apigenin, Jatropholone A, Jatropholone B, Spirocurcasone and Multidione. The best score is for Palmarumycin CP1 -8.2 Kcal/mol. All these compounds are R05 satisfied, good HIA scores and good pharmacokinetic properties. In J.gossypifolia, 2,24,25-Trihydroxylanosta-1,7-dien-3-one ; Cleomiscosin A, Citlalitrione, Gossypifan, Jatrophenone, Jatropholone A, Jatropholone B, Gadain, Gossypidien, Falodone and Gossypiline are having good binding affinities than Azythromycin (control sample). The best score is for Cleomiscosin A -8.2 Kcal/mol. All these compounds are R05 satisfied, good HIA scores and good pharmacokinetic properties. This study has shown anti-COVID-19 potential of these two plants.

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