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INDONESIA
Indonesian Journal of Fundamental and Applied Chemistry
Published by Universitas Sriwijaya
ISSN : 25409395     EISSN : 25409409     DOI : -
Core Subject : Science, Social,
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
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Articles 80 Documents
Kinetic and Thermodynamic Study Removal of Co(II) Using Biosorbent Spirulina sp. in Aqueous Solution Mohadi, Risfidian; Hermansyah, Hermansyah; Hariani, Poedji Loekitowati; Hanafiah, Zazili; Zulkifli, Hilda
Indonesian Journal of Fundamental and Applied Chemistry Vol 2, No 3 (2017): October 2017
Publisher : Indonesian Journal of Fundamental and Applied Chemistry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v2.i3.83

Abstract

Kinetic and thermodynamic adsorption study of Co(II) ions from aqueous solutions by dried Spirulina sp. biomass was investigated in the batch system. The Spirulina sp. was isolated and cultured from algae swamp ecosystem in South Sumatera. The adsorption properties of Co(II) onto dried Spirulina sp. biomass was studied by the influence of contact time, initial metal ion concentration and reaction temperature. The experimental results were the rate of adsorption followed the second-order kinetic model with the rate of reaction k2 is 0.023 g mg-1 min-1  and the thermodynamic studies showed that the adsorption was well fitted to the Langmuir’s model, and the amount of Co(II) removed from solution increased with increasing Co(II) concentration with the higher adsorption energy was 10.38 kJ/mol at 30 °C.Keywords: Spirulina sp, Co(II), adsorption, algae swamp, South Sumatera
Study on Groundwater Quality in Concern to Potent Pollution at Secondary Block P17-5N Delta Telang II (Case Study of Muliasari Village, Tanjung Lago Banyuasin District, South Sumatera Province Indonesia) Novarika, Lilian; Susanto, Robiyanto Hendro; Faizal, Muhammad; Hariani, Poedji Loekitowati
Indonesian Journal of Fundamental and Applied Chemistry Vol 2, No 2 (2017): June 2017
Publisher : Indonesian Journal of Fundamental and Applied Chemistry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v2.i2.28

Abstract

Research had been carried out on tidal marshes condition at tertiary channel Muliasari Village and the effect of land user behavior on water and soils quality. The aimed of research is to evaluate water and soil quality and potent pollution due to fertilizer and pesticide utilization. The research methods are survey and qualitative approach using observation and directed interview with questionnaire aid. Water and soils samples were taken by purposive sampling method. Measurement obtained soils has pH 4.59 and 3.92 for TC4 and TC5 respectively. Cation exchange capacity is 21.65 mg/100 g or TC4 and 20.62 mg/100 g for TC5. C-organic contained in both TC4 and TC5 are very high whereas Total-N is moderate hence ratio C/N has moderate value. P2O5 detected as 81.55 ppm at TC4 and 36.06 ppm at TC5. According to Soils Research Centre Bogor, TC4 and TC5 has moderate value of N (35%) while P and K very high (81.55 ppm and 103.32 ppm). Scoring result concluded that soils is in good health and has 76% (TC4) and 73% (TC5). Storet method confirmed score result for soils as B-class or in good condition. According to these result, TC4 and TC5 of Muliasari Village was lightly polluted and still has good prospect as crops land. Key Words: Tidal zone, Water quality, pollution
Comparison of The Performance of Proton Exchange Membrane Fuel Cell (PEMFC) Electrodes with Different Carbon Powder Content and Methods of Manufacture Rohendi, D.; Majlan, E.H.; Mohamad, A.B.; Shyuan, L.K.; Raharjo, J.
Indonesian Journal of Fundamental and Applied Chemistry Vol 1, No 3 (2016): October 2016
Publisher : Indonesian Journal of Fundamental and Applied Chemistry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v1.i3.61

Abstract

Abstract: Carbon powder in the gas diffusion layer (GDL) contained in the membrane electrode assembly (MEA) has an important role in the flow of electrons and reactant gas. Meanwhile, the method of making the electrode is one of the many studies conducted to determine the most appropriate method to use. Comparative study of the performance of proton exchange membrane fuel cell (PEMFC) electrodes with different carbon powder content (vulcan XC-72) in the GDL and  methods of manufacture of the electrode between casting and spraying method has been carried out. The spraying method consists of one layer and three layer of catalyst layer (CL). The content of carbon powder in the GDL as much as 3 mg cm-2 has a better performance compared to 1.5 mg cm-2 with an increase of 177.78% current density at 0.6 V. Meanwhile, the manufacture of CL with three-layer spraying method has better performance compared with one-layer spraying and casting method.Key words: casting method, spraying method, catalyst layer (CL), GDL.Abstrak (Indonesian): Serbuk karbon pada lapisan difusi gas (LDG) yang menyusun elektroda membran memiliki peran penting dalam mengatur aliran elektron dan gas reaktan. Pada sisi lain metoda pembuatan elektroda adalah salah satu dari banyak studi yang dilakukan untuk menentukan metoda yang paling sesuai yang dapat dikerjakan. Telah dikerjakan studi komparatif kinerja membran penukar proton pada elektroda sel bahan bakar dengan kandungan serbuk karbon (vulcan XC-72) dalam LDG yang bervariasi dan studi komparasi metoda pembuatan elektroda secara tuang dan semprot. Metoda semprot dikerjakan dalam dua variasi yakni pembuatan lapisan katalis (LK) satu dan tiga lapisan. Kandungan serbuk karbon dalam LDG hingga 3 mg cm-2 memiliki kinerja lebih baik dibanding 1,5 mg cm-2 dengan peningkatan kerapatan arus 17,78% pada 0,6 V. Pembuatan LK dengan metoda semprot tiga lapisan memperlihatkan kinerja terbaik dibanding metoda semprot satu lapisan dan metoda tuang.Kata kunci: metode casting, metode spraying, layer katalis, GDL
Nitrogen Removal by Anammox Biofilm Column Reactor at Moderately Low Temperature Agustina, Tuty Emilia; Novia, Novia; Diansyah, Gusti; Ike, Michihiko; Soda, Satoshi
Indonesian Journal of Fundamental and Applied Chemistry Vol 2, No 3 (2017): October 2017
Publisher : Indonesian Journal of Fundamental and Applied Chemistry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v2.i3.78

Abstract

The anaerobic ammonium oxidation (anammox) as a new biological approach for nitrogen removal has been considered to be more cost-effective compared with the combination of nitrification and denitrification process. However, the anammox bioreactors are mostly explored at high temperature (>300C) in which temperature controlling system is fully required. This research was intended to develop and to apply anammox process for high nitrogen concentration removal at ambient temperature used for treating wastewater in tropical countries. An up-flow biofilm column reactor, which the upper part constructed with a porous polyester non-woven fabric material as a carrier to attach the anammox bacteria was operated without heating system. A maximum nitrogen removal rate (NRR) of 1.05 kg-N m3 d-1 was reached in the operation days of 178 with a Total Nitrogen (TN) removal efficiency of 74%. This showed the biofilm column anammox reactor was successfully applied to moderate high nitrogen removal from synthetic wastewater at moderately low temperature. Keywords: Anammox, biofilm column reactor, ambient temperature, nitrogen removal
Isolation of Piperin from The Fruit of Piper retrofractum Musthapa, Iqbal; Gumilar, Gun Gun
Indonesian Journal of Fundamental and Applied Chemistry Vol 2, No 1 (2017): February 2017
Publisher : Indonesian Journal of Fundamental and Applied Chemistry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v2.i1.06

Abstract

This paper will described the isolation of major compound from MeOH extract from the fruit of Piper retrofractum. Using several chromatography technique including liquid vacuum chromatography and thin layer chromatography, and further purification using re-cristalization technique, Piperine, an alkaloids compound, was isolated from this extract. The structure of this compound was determined using spectroscopic methods including FTIR, 1D-NMR and 2-D NMR.Keywords : P.retrofractum, alkaloids, piperine, structure elucidation
Nutrient Digestibility of Beef Cattle Ration with Total Mixed Fiber Amoniation (TMFA) as Basal Feed and Organic Mineral Supplementation by In Vitro Imsya, Afnur; Windusari, Yuanita; Riswandi, Riswandi
Indonesian Journal of Fundamental and Applied Chemistry Vol 3, No 1 (2018): February 2018
Publisher : Indonesian Journal of Fundamental and Applied Chemistry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v3.i1.12

Abstract

The research was aimed to obtain the level of organic minerals supplementation with Total mixed fiber Amoniation (TMFA) as basal feeding for the improvement of nutrient digestibility in rumen. Technique of research conducted by In Vitro technique. The method used in this research is a Completely Randomly Designed (CRD) with 4 treatments and 4 replications. P1: 60% amoniation TMF + 0 x Organic macro minerals (Ca, P, and S) NRC (2000) + 15% Swamp Legumes. P2: 60% ammonia TMF + 0.75 x Organic macro minerals (Ca, P, and S) NRC (2000) + 15% Swamp Legum, P3: 60% ammonia TMF + 1 x Organic macro minerals (Ca, P, and S) NRC (2000) + 15% Legum Swamp P4: 60% amoniation TMF + 1.5 x Organic macro minerals (Ca, P, and S) NRC (2000) + 15% Swamp Legum. Each treatment was added with an organic micro-mineral consisting of 40 ppm organic Zn, 10 ppm organic Cu, 0.10 ppm organic Se, and 0.30 ppm organic Cr. The parameters measured in the in-vitro technique were, measurement of nutrient digestibility which consists of dry matter and organic matter, crude protein, crude fiber, NDF and ADF. The results showed that organic mineral supplementation had significantly different effect (P <0.05) on nutrient digestibility (dry matter, organic matter, crude protein, crude fiber, ADF, NDF). The conclusion of this study was that organic mineral supplementation of Ca, P and S 1.5 times of requirement according to NRC (2000) gave the best results for in vitro nutrient beef digestion with Total mixed fiber ammoniation (TMFA) as basal feed and supplementation of l5% legume swamp (Kemon air).Keywords: Amoniation, total mixed fiber, organic mineral, nutrient digestibility
Utilization of Modified White Corn Starch in Producing Marshmallow Cream Aini, Nur; Hariyadi, Purwiyatno
Indonesian Journal of Fundamental and Applied Chemistry Vol 3, No 2 (2018): June 2018
Publisher : Indonesian Journal of Fundamental and Applied Chemistry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v3.i2.40

Abstract

The purpose  of this study was to determine the effect of the white maize starch by oxidation and acetylation-oxidation modification on gel formation and character of the resulting gel, and applying a modified white corn starch in manufacturing of marshmallow cream. White corn varieties Srikandi, Pulut and Canggal are used as raw materials to produce starch. Starch modification is conducted by oxidation and acetylation-oxidation. Quality analysis of the modified starch is freeze thaw stability, smallest gel formation concentration and gel strength. Corn starch, both native and modified applied in manufacturing of marshmallow cream. The results showed that the treated starch acetylation-oxidation provide the best freeze thaw stability with the least water released than native starch and modified starch oxidation. Starch modified by oxidation tend to have the highest Least Gelling Concentration (LGC). Gel produced from modified starch both oxidation and acetylation-oxidation has a gel strength greater than the native starch. Marshmallow cream that uses a modified starch by acetylation-oxidation, have the best received power in testing organoleptic by the panelists. Use of modified starch does not give a noticeable difference in color of the product, but it gives texture and the best spread power compared to products using original starch.
A Triterpenoid Compound From The Leaves of Lantana camaraLinn. Kartika, Kartika MZ; Suryati, Suryati; Efdi, Mai
Indonesian Journal of Fundamental and Applied Chemistry Vol 3, No 1 (2018): February 2018
Publisher : Indonesian Journal of Fundamental and Applied Chemistry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v3.i1.18

Abstract

A triterpenoid compound has been isolated from the ethyl acetate fraction of Lantana camaraLinn leaves. The isolation was performed by chromatography of gravitation column with a gradient elution system using hexane, ethyl acetate and methanol. Purification by recrystallization produces a white solid (20 mg) with a melting point of 288-289 °C. The results of elucidation of UV, IR, 1H-NMR, 13C-NMR, HMBC, HSQC, DEPT and COSY spectral data, it is known that the isolated triterpenoid compound is 22β-angeloyloxy-9-hydroxy-3-oxo-olean-12- en-28-oicacid with molecular formula C35H52O6. Keywords—Lantana camaraLinn, Chromatography of gravitation column, Triterpenoid, C35H52O6
Assessing the Effectiveness of Top Leaf Meal of Indigofera zollingeriana to Substitute Soybean Meal through Evaluation on Protein Quality and Metabolic Energy in Poultry Feed Palupi, Rizki; Sumiati, Sumiati; Astuti, Dewi Apri; Abdullah, Luki
Indonesian Journal of Fundamental and Applied Chemistry Vol 3, No 2 (2018): June 2018
Publisher : Indonesian Journal of Fundamental and Applied Chemistry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v3.i2.47

Abstract

This study aimed to evaluate protein quality of top leaf meal of Indigofera zollingerina based on its net protein utilization (NPU) as well as to evaluate its metabolizable energy. Fifty broiler chicks were used in determination of NPU while fifteen broiler strain Cobbs chickens aged 5 weeks were used for metabolizable energy measurement. This study used descriptive method in which data obtained were analyzed and compared to NPU and metabolizable energy of soybean meal. The results showed that top leaf meal of Indigoferazollingerinahad NPU of 38.58 – 46.98, which is 70.14% - 85-42% of that of soybean meal (55). Its metabolizable energy was 2791.12 kcal/kg and was 9.46% higher than that of soybean meal. As the NPU and metabolizable energy were close to those of soybean meal, top leaf meal of Indigoferazollingerinacan be used to substitute protein from soybean meal in poultry feed.
Color And COD Degradation of Procion Red Synthetic Dye by Using Fenton-TiO2 Method Teguh, Dedi; Agustina, Tuty Emilia; Faizal, Muhammad
Indonesian Journal of Fundamental and Applied Chemistry Vol 3, No 1 (2018): February 2018
Publisher : Indonesian Journal of Fundamental and Applied Chemistry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v3.i1.23

Abstract

Nowadays, environmental pollution caused by industrial wastewater is quite apprehensive. Most of textile industries used synthetic dyes. Procion red is one of the synthetic dyes that often used in textile industries and classified as a reactive dye that is difficult to decompose in nature and contain harmful toxins. One of the colored wastewater treatment process is by using Fenton reagent and TiO2 catalyst (Fenton-TiO2) as one of Advanced Oxidation Processes (AOPs). The objective of this research is to treat of procion red synthetic dye by using Fenton-TiO2 method and study the effect of procion red concentration, reaction time and the concentrations of TiO2 catalyst on color and COD degradation. In this experiment, the concentrations of procion red were varied between 150-300 ppm, the concentrations of TiO2 catalyst were varied from 0.05 to 0.4% (w/v) and the reaction time of 5 to 20 minutes. The optimum condition was achieved by using procion red concentration of 150 ppm with TiO2 catalyst concentration of 0.4% and reaction time of 20 minutes, which the maximum color and COD degradation of 98.67% and 92% were achieved respectively. This condition was applied to the real wastewater of textile home industry in Palembang. The color and COD degradation of 59% and 44% were found respectively after 220 minutes of reaction.