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ALKIMIA : Jurnal Ilmu Kimia dan Terapan

alkimia
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Published by Universitas Islam Negeri Raden Fatah Palembang

ISSN : 25809873 EISSN : 25809881 DOI : -

Core Subject : Science, Social, Engineering,

Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Environmental Science Social Sciences

ALKIMIA : Journals of chemistry and applied science with number of E-ISSN: 2580-9881 and P-ISSN: 2580-9873 is a journal of chemistry that publishes research results related to the findings in the field of organic chemistry, inorganic, physical, analytical, biochemical and other as a problem solving in the field of environment, energy, and food. ALKIMIA is published twice a year in February and August, by chemistry science and technology faculty of UIN Raden Fatah Palembang. The editors are happy to invite researchers to publish their research results at Journal ALKIMIA.

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Articles 79 Documents

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Reduction of Fe Levels in Groundwater Using Aeration-Filtration Method with Tray Aerator System Sari, Yelfira
ALKIMIA Vol 5 No 1 (2021): ALKIMIA
Publisher : SCIENCE AND TECHNOLOGY FACULTY OF UNIVERSITAS ISLAM NEGERI RADEN FATAH PALEMBANG

The presence of high iron (Fe) content in water consumption is a major factor that causes health and aesthetic problems. Its amount in water samples can be reduced by combining the aeration and filtration methods of water treatment. The aeration method basically involves making direct contact between air and water, which is usually done by adding both together. Subsequently, the filtration method uses porous media like sand, gravel, and activated charcoal to filter water.This research compares the effectiveness of aeration, filtration, and combined aeration-filtration methods of water treatment. For the aeration method, a form of trays aerator arranged in 6 levels with a distance of 20cm is used along with a varied contact time duration of 1, 3, and 5 hours. In addition, quartz sand, activated carbon, palm fiber, and coral were used as the media for the filtration method. The results obtained as the % value of iron (Fe) removal were varied at a contact time of 1, 3, and 5 hours for both the aeration and combined aeration-filtration method, and 46.95; 78.2; 82.48; 72.32; 81.71; 87.24; and 70.44 for the filtration method shows the working effectiveness of the tools. The combination of aeration with filtration provides maximum results when compared to using aeration alone or filtration methods alone.

Absorption Methanyl Yellow Dye Using Hydrogel of Cassava Peel Starch (Manihot esculenta Cranzt) Firnanelty, Firnanelty
ALKIMIA Vol 5 No 1 (2021): ALKIMIA
Publisher : SCIENCE AND TECHNOLOGY FACULTY OF UNIVERSITAS ISLAM NEGERI RADEN FATAH PALEMBANG

Hydrogel of cassava peel starch was successfully decreased methanyl yellow dye. This adsorbent was employed to adsorb typical organic cationic dye contaminants from high concentration effluents. This study aimed to determine characteristic of cassava peel starch hydrogel and ability of hydrogel increased dyes. The stages of hydrogel consist of extracting cassava peel starch, making a starch solution, making hydrogel, testing water absorption, and analysing with FTIR and UV-Vis spectrophotometer. The results have obtained that the cassava peel starch hydrogel had have N-H group. Result of hydrogel had been contacted with dyes that showed N=N and S=O groups from the initial functional groups of cassava peel starch in FTIR spectum. The highest absorption of hydrogel was at 30 ppm methanyl yellow dye concentration, which was 31.72%. This result showed that the hydrogel of cassava peel starch can be used as an absorbent of methanyl yellow dye.

Sulfonated Nano-bentonit as Doping Material in Chtiosan/PVA membrane in Fuel cell Application Ariesta, Nina
ALKIMIA Vol 5 No 1 (2021): ALKIMIA
Publisher : SCIENCE AND TECHNOLOGY FACULTY OF UNIVERSITAS ISLAM NEGERI RADEN FATAH PALEMBANG

Electrolyte membrane of fuel cell is the main component that plays a role in separating the reactants and being a means of transporting hydrogen ions produced by the anode reaction to the cathode so that the reaction at the cathode produces electrical energy. Chitosan/PVA/Nanobentonite based membrane was made of natural bentonite form Karang Tengah, Bogor. The study was conducted to know the effect of particle size of doping materials added to chitosan/PVA membrane for fuel cell. The method used in the experiment was casting method with variation of concentration of sulfonated bentonite. Then, membranes were namely C/PVA/n-ben 0.3, 0.6 and 0.9. The membrane that had been synthesized was identified by swelling test, proton conductivity test and cation exchange capacity test then characterized by FTIR, SEM and XRD. The result of the experiment showed the best swelling test was presented on the membrane with concentration of 0.9% sulfonated bentonite by 62.79% and the best proton conductivity test was shown on a membrane with a concentration of 0.6% sulfonated bentonite which was 2.24 x 10-6 S/cm, supported by the result of the cation exchange capacity data.

DETERMINATION OF OIL AND FAT LEVELS IN LIQUID WASTE OF PALM OIL INDUSTRY IN MUARO JAMBI DISTRICT Rahmi, Rahmi
ALKIMIA Vol 5 No 1 (2021): ALKIMIA
Publisher : SCIENCE AND TECHNOLOGY FACULTY OF UNIVERSITAS ISLAM NEGERI RADEN FATAH PALEMBANG

Waste contains pollutants that can change the quality of the environment.Wastewater discharged into the environment must comply with standard quality standards. One of the parameters that are harmful to the environment are oils and fats. Oils and fats are on the surface of the water so they can block sunlight from entering the water and can interfere with the activities of aquatic biota. Determination of oil and fat content in palm oil industrial wastewater in Muaro Jambi District using the gravimetric method based on the Indonesian National Standard 6989.10:2011. The results obtained in the inlet waste pond of PT. A, PT. B and PT. C respectively 582.4 mg/L; 380.2 mg/L and 221.4 mg/L while for PT. A, PT. B and PT. C respectively 78.8 mg/L; 53.6 mg/L and 12.8 mg/L. According to the Regulation of the Minister of the Environment of the Republic of Indonesia No. 5 of 2014, the maximum permissible level for liquid waste oil and fat at the outlet liquid waste of the palm oil mill industry is 25 mg/L. Based on the test results, it can be concluded that the levels of oil and fat that meet the quality standards of palm oil liquid waste are outlet waste from PT. C.

Liquid Fuel From Polypropylene Plastic Wastes with Bentonite as Catalyst by Catalytic Cracking Process Kurnia, Dwi Miftha; Faizal, Muhammad
ALKIMIA Vol 5 No 2 (2021): ALKIMIA
Publisher : SCIENCE AND TECHNOLOGY FACULTY OF UNIVERSITAS ISLAM NEGERI RADEN FATAH PALEMBANG

Abstract. The aim of this project work is to convert waste plastics into useful fuel range hydrocarbon mixture. The catalytic cracking process of polypropylene plastic waste (mineral water cup) was performed in a fixed-bed reactor with bentonite catalyst, at five temperatures ranging from 150 to 350oC with percent catalyst of 4%.The amounts of liquid fuel produced, as well as the compositions of the resulting liquid fuel, were determined by Gas Chromatography-Mass Spectrometry. The influences of cracking parameters, such as temperature and catalyst mass, on product yields were investigated. The optimum conditions cracking of polypropylene plastics waste with bentonite as catalyst is at temperature of 350oC with 4% catalyst mass or20 grams. The highest liquid yield (41.5%) was obtained using 20 gram Bentonite catalyst at 350oC. The highest percent composition of C6H14, C7H16 andC8H18 in liquid product is 16.92%, 18.48%, and 12.22% respectively at temperature of 350oC.

Determination of Heavy Metals and Other Toxic Elements In Four Brands of Commercial Bottled Water From Indonesia Market By ICP/MS Alam, Tunas
ALKIMIA Vol 5 No 1 (2021): ALKIMIA
Publisher : SCIENCE AND TECHNOLOGY FACULTY OF UNIVERSITAS ISLAM NEGERI RADEN FATAH PALEMBANG

Heavy metals and toxic elements four brands of commercial bottled water from Indonesia market were analyzed by using Inductive Couple Plasma-Mass Spectrometer (ICP-MS). The heavy metals and toxic elements to be analyzed were copper (Cu), iron (Fe), lead (Pb), cadmium (Cd), chromium (Cr), arsenic (As), selenium (Se) and manganese (Mn). The results are the heavy metals and toxic elements from all commercial water samples were below the permissible level of the World Health Organization (WHO) and Standar Nasional Indonesia (SNI). Hence, this determination clarify no risk about quality and safety of commercial bottled water for public drinking water.

The Future Energy Production from Aluminum and Water With Carbon Catalyst From Rice Husk Safii, Farhan Fikri
ALKIMIA Vol 5 No 2 (2021): ALKIMIA
Publisher : SCIENCE AND TECHNOLOGY FACULTY OF UNIVERSITAS ISLAM NEGERI RADEN FATAH PALEMBANG

Hydrogen is an environmentally friendly fuel that is promoted as one of the most promising alternative energies to replace fossil fuels. The production of hydrogen through the hydrolysis reaction of aluminum is a solution to overcome the problems in the current hydrogen production method. The production of hydrogen through the hydrolysis of aluminum is an environmentally friendly process because this process produces hydrogen and AlOOH or Al(OH)3 which are easily biodegradable in nature. However, this reaction has a low reaction rate so a catalyst is needed to increase the reaction rate. In this study, carbon catalyst from coconut shell waste which was carbonated at a temperature of 800 °C and activated with 1M sulfuric acid had been successfully synthesized by electrolysis method with 0.01 NaOH solution; 0.1; 1 M. The morphological structure of the carbon catalyst produced has the same shape as activated carbon from coconut shells, which is amorphous. The SEM-EDX results showed that the carbon catalyst electrolyzed with 0.01 M NaOH had the highest metal content of Na, which was 3.68 wt%. Meanwhile, 0.1 and 1 M have Na metal content of 2.17% and Na 2.54 wt%. The results of Thermal Gravimetric Analysis (TGA) show that the thermal stability of the carbon catalyst is higher than that of activated carbon. Surface area analysis by Brunauer-Emmett-Teller (BET) showed that the activated carbon and the synthesized carbon catalyst had microporous and mesoporous structures simultaneously. The electrolyzed carbon catalyst with 0.1 M NaOH has the largest surface area of 512,2 m2/g. While the electrolyzed carbon catalyst with 0.01 M has the smallest surface area of 393,189 m2/g. The effectiveness of the carbon catalyst is known from the amount of aluminum oxidized. The carbon catalyst electrolyzed with 0.01 M NaOH was found to be the most effective because it was able to oxidize 9.17% aluminum, while the carbon catalyst electrolyzed with 0.1 and 1 M NaOH was only able to oxidize 6.85 and 7.96 aluminum, respectively. %.

Phytochemical Screening of Active Secondary Metabolites and Antibacterial Activity Kaffir Lime Leaf (Citrus hystrix) and Tumeric Leaf (Curcuma longa Linn.) Against Escherichia coli Suryani, Novia; Munawar, Faradillah; Hajaroh, Siti
ALKIMIA Vol 5 No 2 (2021): ALKIMIA
Publisher : SCIENCE AND TECHNOLOGY FACULTY OF UNIVERSITAS ISLAM NEGERI RADEN FATAH PALEMBANG

This study aims to determine the content of active compounds of secondary metabolites and antibacterial activity of secondary metabolites from a maceration of turmeric leaf (Curcuma longa Linn.) and kaffir lime leaf (Citrus hystrix) against Escherichia coli (E. coli). Each sample of kaffir lime leaf and turmeric leaf was extracted by maceration method using 96% ethanol solvent for 3 x 24 hours and the solvent was changed every 1 x 24 hours, then the filtered filtrate was thickened using a rotary evaporator. The phytochemical screening test was carried out by qualitative method using chemical reagents. The antibacterial activity test of the extract of the combination of turmeric leaves (Curcuma longa Linn.) and kaffir lime leaves (Citrus hystrix) used the Punch Hole Diffusion method with various concentrations of 20%, 40%, 60%, 80%, and 100%. The results showed that the combined extract of turmeric leaf (Curcuma longa Linn.) and kaffir lime leaf (Citrus hystrix) contained secondary metabolites in the form of flavonoids, alkaloids, steroids, tannins, and saponins. The optimum zone of inhibition to inhibit the growth of E. coli produced was 9.73 ± 0.78 mm. Overall, it can be concluded that the combined extract of turmeric leaf (Curcuma longa Linn.) and kaffir lime leaf (Citrus hystrix) has potential as an alternative to antibacterial active compounds.

Determination of Mefenamic Acid and Dexametashone in Instant Pegal Linu Herbal Medicine in Kediri by Using UV-Vis Spectro Sukmawati, Datin An Nisa; Sembiring, Yulia Shara
ALKIMIA Vol 5 No 2 (2021): ALKIMIA
Publisher : SCIENCE AND TECHNOLOGY FACULTY OF UNIVERSITAS ISLAM NEGERI RADEN FATAH PALEMBANG

Jamu pegal linu is one of the traditional medicinal products that are in great demand by the public, because it can relieve muscle and bone pain, improve blood circulation, strengthen body resistance, and relieve pain all over the body. However, some industry players have added medicinal medicine such as dexamethashone and mefenamic acid in herbal medicine. This study aims to determine the validity of the method in the analysis of dexamethashone and mefenamic acid by UV-Vis spectrophotometry on herbal medicine circulating in Indonesia several markets in Kediri-East Java. The sampling technique used in this study is a purposive sampling method so as to get 5 samples of herbal medicine (A,B,C,D,E). Research begins with determined of wavelength (nm) maximum of dexamethashone and mefenamic acid standard at 200-400 nm and determined of method validation to ensure the accuracy of the method in determining dexamethashone and mefenamic acid levels in the sample. The results of the research showed that the wavelength maximum of mefenamic acid and dexamethashone standard were 288 nm and 245 nm. The method validation showed that this method is good for detect the presence of mefenamic acid and dexamethasone in herbal medicine with the value of the validation parameters, such as linierity of calibration curve of mefenamic acid and dexamethasone weas 0.998, detection limit (LOD) 0.8779 µg/mL and 0.9677 µg/mL ; quantification limit (LOQ) 2.9264 µg/mL and 2.2256 µg/mL; intraday and interday precision of mefenamic acid was expressed by the value of % standard deviation relative (%RSD) was 0.8905 % and 1.0781 %; intraday and interday precision of dexamethasone was expressed by the value of % standard deviation relative (%RSD) was 0.6917 % and 0.8062 %. Respectively; as well as the accuracy expressed in mean % recovery were 101.547 % for mefenamic acid, and 100.576% for dexamethasone. Results analysis of the sample using a validated method showed that only sample A was mefenamic acid positively with concentration was 7.6796 µg/mL. The other hand, sample C,D and E was dexamethashone positively with concentrations were 2.4978 µg/mL, 2.4112 µg/mL and 8.7748 µg/mL.

Study ff Interaction Between ADT-C2 Cyclic Peptide (Ac-CADTPPC-NH2) and E-Kadherin Protein Using Docking Molecular Method Panduwati, Digna Renny
ALKIMIA Vol 5 No 2 (2021): ALKIMIA
Publisher : SCIENCE AND TECHNOLOGY FACULTY OF UNIVERSITAS ISLAM NEGERI RADEN FATAH PALEMBANG

Research has been conducted on the study of the interaction between cyclic peptide ADTC2(Ac-CADTPPC-NH2) and E-cadherin protein using the molecular docking method. The aim of this study is to determine the position of the binding site and the energy of interaction between the ADTC2 peptide and the EC1-EC2 domain of E-kadherin. This research was divided into two parts, (1) Preliminary test using molecular dynamics (DM) method with Gromacs v4.5.4 software, (2) interaction of the peptide ADTC2 with EC1-EC2 using the molecular docking method (MD) with Autodock 4.2 software. Docking was performed with the blind dock method on EC1 and EC2 position. In the second step, the gridbox position was reduced based on the binding activity between E-cadherin and peptides. The strongest interaction and Van der Walls bonds were obtained in boxes B, C and D. The results showed that the ADTC2 peptide had a biological activity to inhibit the interaction of E-cadherin...E-cadherin by forming a complex with the EC1-EC2 domain. This inhibition occured by forming two binding sites in the EC1 domain (interaction energies are -23.309 kJ / mol and -26.234 kJ / mol, respectively) and one binding site in the EC2 domain (interaction energies are -22.677 kJ / mol). Based on preliminary tests, it can be proven that the native structure of ADTC2 is cyclic with optimization energy of -52504.78 kJ/mol and very stable from the beginning to the end of DM with an RMSD was <2 Å.

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Sumatera selatan

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