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Jurnal Periodic

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Published by Universitas Negeri Padang

ISSN : - EISSN : 23391197 DOI : https://doi.org/10.24036/p.v11i2.113715

Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Materials Science & Nanotechnology

Periodic adalah jurnal nasional yang berisi artikel-artikel bidang ilmu kimia, seperti bidang Kimia Analitik, Kimia Fisika, Kimia Anorganik, Kimia Organik dan Biokimia. Jurnal ini mempublikasikan hasil penelitian original, komunikasi singkat, dan artikel review. Artikel yang telah diterbitkan dalam jurnal ini berarti bahwa kegiatan penelitian yang diterbitkan adalah belum, dan tidak akan diterbitkan di tempat lain. Periodic (e-ISSN 2339-1197) diterbitkan oleh Jurusan Kimia dan mulai tahun 2022 disebut Departemen Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Padang, Indonesia. Periodic terbit berdasarkan berdasarkan surat edaran Direktorat Jenderal Pendidikan Tinggi No. 152/E/T/2012 tentang publikasi karya tulis ilmiah dan terbit sejak Oktober 2012.

Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)

Articles 10 Documents

Search results for , issue "Vol 8, No 2 (2019): PERIODIC" : 10 Documents clear

Sintesis Membran Molecularly Imprinted Polymers (MIPs) dan Karakterisasinya sebagai Bahan Penyerap Asam Urat Atika, Rahma; Ulianas, Alizar
Periodic Vol 8, No 2 (2019): PERIODIC
Publisher : Jurusan Kimia FMIPA UNP

MIPs is an polymers that have cavities release the template molecules. The cavity serves to separate the analyte by recognizing target molecules based on their shape, size, structure, physical and chemical properties. MIPs have a high level of sensitivity and selectivity. In the review of this article, it is discussed about membrane synthesis MIPs, the effect of uric acid solution pH and optimizaton time on the adsorption of MIPs. Power capability MIPs adsorption of uric acid was analyzed using FTIR (Fourier Transform Infra Red). Based on article review that MIPs are able to adsorbtion uric acid seen from the peak adsorption of C=O and C-N groups in the area 1673 cm-1 and 1290 cm-1 region which are characteristic of the amides found in MIPs reextraction. Whereas in the extraction MIPs there was no peak adsorption of the C-N group. Peak adsorption this C-N group is only owned by pure uric acid and is not present in MIPs. In addition there is influence significant adsorption of MIPs against uric acid with differences in adsorption time and pH uric acid solution. MIPs can be applied to adsorb uric acid in blood samples.

Polimerisasi Emulsi Asam Tanat : Pengaruh Inisiator dan Surfaktan Terhadap Efisiensi Dye Sensitized Solar Cell (DSSC) Susanti, Melly; Hardeli, Hardeli
Periodic Vol 8, No 2 (2019): PERIODIC
Publisher : Jurusan Kimia FMIPA UNP

Dye sensitized solar cell (DSSC) are photoelectrochemical based solar cells that involve the transfer of electrical charges from one phase to another. This research was carried out aimed at making DSSC (Dye Sensitized Solar Cell), Knowing the value of the conversion of solar energy into electrical energy and determining the value of the resulting efficiency. In this research, TiO2 degusa P-25 is coated with ITO glass by conductive part through doctor blande technique. Photon absorbent substances in this study used dye from tanned acid which was polymerized results characterization with FTIR on dyes has a strong absorption band at 1050 nm wavefroms indicating the presence of ether functional groups. In addition, when the DSSC circuit is illuminated by a 24 watt UV lamp it will produce electrical properties such as resistance and voltage as measured by a digital multimeter. Variation of inisiator and surfactant can influence the efficiency of the DSSC prodyced the highest efficiency is produced at a concentration of 0,5 M inisiator and 16 grams of surfactant mass which is 7,145 %.

Degradasi Congo Red Secara Fotosonolisis Menggunakan Katalis ZnO-TiO2 Amelia, Reza; Sanjaya, Hary
Periodic Vol 8, No 2 (2019): PERIODIC
Publisher : Jurusan Kimia FMIPA UNP

This study aims to determine the optimum time and amount of TiO2 used for doping the optimum ZnO in degrading Congo Red dye. The results of the percentage degradation were obtained from the absorbance value which was measured using a UV-Vis Spectrophotometer. (Î»max) Congo Red obtained from measurements using a UV-Vis Spectrophotometer is 498 nm. The results showed that the optimum irradiation and sonication time to degrade Congo Red was 75 minutes with a degradation percentage of 98.11%. On the effect of variations in the amount of TiO2 doping showed optimum results at 20% ZnO-TiO2, with a degradation percentage of 96.85%. The results of XRD analysis showed that the crystal size of 20% ZnO-TiO2 was 48.57-96.58 nm. While analysis with UV-DRS obtained a band gap value of 20% ZnO-TiO2 which is 3.11 Ev.

Pengaruh Ukuran Partikel Biosorben Terhadap Penyerapan Ion Logam Pb(II) Dari Biji Dan Kulit Lengkeng (Euphoria longan Lour) Puja, Puja; Kurniawati, Desy
Periodic Vol 8, No 2 (2019): PERIODIC
Publisher : Jurusan Kimia FMIPA UNP

A study about the effect of biosorbent particle size on adsorption Pb ions from seeds and shell lengkeng (Euphoria longan lour) has been conducted. Shell and seeds lengkeng were activated with HNO3 and characterized by FTIR to analyze the mayor functional groups in biosorbent. The effect of seed and shell lengkeng (Euphoria longan lour) on the adsorption capacity of Pb (II) metal ions was carried out with variation 106 Î¼m, 150 Î¼m, 250 Î¼m, and 300 Î¼m. The results obtained from the particle size 106 Î¼m of seed and shell lengkeng have a greater adsorpsition of 25,626 mg/g dan 30,095 mg/g respectively. This study shows that the biosorbent particle size afffects the amount of adsorption of metal ions

Optimization Of Time and Catalyst Mass of Polyethylene Terephthalate (PET) Microplastic Waste in Caranx Sp. Fish at Padang City by Glycolysis Method Elvinda, Reza; Dewata, Indang
Periodic Vol 8, No 2 (2019): PERIODIC
Publisher : Jurusan Kimia FMIPA UNP

There is need to recycle Polyethylene Terephthalate (PET) waste, being one of the most widely used plastics in the industries and household. This material is usually used in beverage packaging, leading to increasing quantities reported every year, and recycling is needed because of poor automatic degradation ability. The phenomenon is estimated as dangerous to the terrestrial and aquatic environments. Furthermore, glycolysis method was performed using ethylene glycol (EG) solvent, at PET:EG ratio of 1:3, under constant temperature, and the reflux time was varied at 2.5, 3, 3.5, 4 and 4.5 hours. However, the catalyst mass used was varied at 0.04 g, 0.07 g, 0.1 g, 0.13 g and 0.16 g, to identify the optimal conditions. The best results were obtained at the temperature of 196oC, within 3.5 hours, with a catalyst mass of 0.1 g, and 93.409 % BHET yeild. This product was characterized using FTIR test to confirm the existence of important groups, and followed by application on fish samples in Padang City. The results obtained in the absence of white crystals in the determination results of microplastic waste in fish samples.

Pengaruh Konsentrasi Elektrolit KCl terhadap Produksi Gas Hidrogen Erwandri, Rianovriani; Zainul, Rahadian
Periodic Vol 8, No 2 (2019): PERIODIC
Publisher : Jurusan Kimia FMIPA UNP

Abstract â”€ One of the effective alternative energy to replace fossil fuels is hydrogen gas. Hydrogen gas as a fuel is an alternative energy that is environmentally friendly and does not produce harmful products. To produce hydrogen gas can be done through the method of electrolysis of water, which is to decompose H2O compounds into hydrogen gas and oxygen gas with the help of an electric current. The factors that influences the production of hydrogen gas during the electrolysis process is the concentration of electrolyte solution, so the concentration of the solution (M) becomes an independent variable and the amount of gas concentration (ppm) produced is the dependent variable in this research. As for the variation of electrolyte concentrations used are 0,1 M; 0,25 M; 0,5 M; 0,75 M, and 1 M. the current and voltage used in the electrolysis process are fixed at 6 ampere and 2 volts for 1 hour. This research aims to determine the concentration (ppm) of hydrogen gas produced through the electrolysis process. The concentration of hydrogen gas produced is determined using an MQ-8 sensor. Research results showed that the production of hydrogen gas using aquades electrolytes was 10 ppm for the use of KCl electrolytes with various concentrations respectively was 13 ppm, 17 ppm, 26 ppm, 37, ppm, and 34 ppm. From the research results obtained: the greater the concentration of chloride salt used, the more hydrogen gas in produced and the larger the size of the electrolyte ion, the greater the hydrogen gas produced.

Sintesis Membran Molecularly Imprinted Polymers (MIPs) dengan Metoda Photopolimerisasi sebagai Bahan Penyerap Glukosa Pihanda, Febi Aulia; Ulianas, Alizar
Periodic Vol 8, No 2 (2019): PERIODIC
Publisher : Jurusan Kimia FMIPA UNP

MIPs are specific molecular identification polymer molds that are sensitive to their template molecules. The purpose of this discussion is to find out how to synthesize and characterize glucose MIPs membranes, optimum conditions for absorption of MIPs against glucose and application of Glucose MIPs. Based on literature, MIPs resulting from synthesis have a physical form in the form of solids. FTIR test results on MIPs are good, namely the appearance of O-H groups that indicate the presence of hydrogen bonds that can bind the template molecule in the form of glucose, in this discussion appears at wave number 3483,56 cm-1. The absorption capacity of MIPs for glucose can be influenced by the amount of MIPs, pH of glucose solution. Besides MIPs can be used to absorb glucose from the urine.

Optimasi Waktu dan Suhu Refluk Pada Glikolisis Limbah Mikroplastik Polyethylene Terephthalate (PET) Dalam Garam Konsumsi di Kota Padang Meilindri, Rahmi Aulia; Dewata, Indang
Periodic Vol 8, No 2 (2019): PERIODIC
Publisher : Jurusan Kimia FMIPA UNP

The use of plastics is increasing every year, causing plastic waste to accumulate. Plastics that are very often found are PET types such as beverage packaging bottles. Plastic waste pollutes the waters because plastic have processes that become microplastic which can pollute marine products, one of which is consumption salt. The handling of PET (polyethylene terephthalate) microplastic can be done by depolymerizing PET plastic polymers into its constituent monomers, namely BHET (Bys-hydroxylethyl terephthalate) monomers using the glycolysis method. The glycolysis method is carried out with ethylene glycol (EG) solvent and Na2CO3 catalyst. PET plastic samples used are PET plastic beverage bottles and salt consumption. The optimum condition of reflux time and reflux temperature of the glycolysis process in this study showed the highest yield of 48.36%, namely at 90 minutes with a temperature of 186 Â° C Characterization of PET glycolysis results with FTIR showed the presence of carboxylic O-H peaks, C = O carbonyl, C-O carboxylates, C-H alkanes, and C-H aromatics which proved that PET polymers had glycolysis process into BHET monomers. The five consumption salt samples used did not show the presence of PET type microplastics by the glycolysis method in 10 grams of consumption salt samples.

Pengaruh Suhu dan Konsentrasi Monomer Pada Polimerisasi Asam Tanat Sebagai Zat Warna Terhadap Efisiensi Dye Sensitized Solar Sel Agustini, Dwi; Hardeli, Hardeli
Periodic Vol 8, No 2 (2019): PERIODIC
Publisher : Jurusan Kimia FMIPA UNP

Dye Sensitized Solar Cell (DSSC) is a solar cell with a dye as an absorbent of photons from sunlight. Research related to DSSC is still ongoing to find DSSC components that produce high efficiency, but are easy and inexpensive to produce. Polymerization is a combined reaction of several monomers with certain rearrangements. The polymerized monomer is tannic acid which is an organic compound that has about 20 Ï€-Ï€ * bonds. The tannic acid produced is then used as a dye in the DSSC circuit. Assembled DSSCs are tested for voltage and resistance using a digital multimeter. The polymerized dyes were characterized using UV-Vis, FTIR. The results of the UV-Vis analysis showed that the batochromic shift occurred in the polymerized dye. The batochromic effect will cause more photons to be converted into electrical energy. The FTIR spectrum is used to confirm the formation of poly-tannic acid. The efficiency of DSSC with polymerized dyes was higher than that of non-polymerized dyes, which was 8.9%

Pengaruh pH dan Konsentrasi Larutan Terhadap Penyerapan Zat Warna Rhodamin B Menggunakan Biosorben Kulit Pisang Kepok (Musa Balbisiana Colla) Rahmatika, Aljumaatul; Nasra, Edi; Dewata, Indang; Sanjaya, Hary
Periodic Vol 8, No 2 (2019): PERIODIC
Publisher : Jurusan Kimia FMIPA UNP

Abstract â”€ Pollution that occurs in the community is caused by solid or liquid waste. One of the pollutants that are discharged into the environment are dyes. The dye waste originates from the coloring and dyeing process which is discharged directly in large quantities into the environment without prior processing. While the environment has certain limits to degrade the incoming compounds or dyes. One alternative method used to remove Rhodamin B dyes is the biosorption method. This method is believed to be able to eliminate pollutants in the waters because of its absorption which is quite effective at a relatively low cost, easy workmanship and the materials used are easily obtained such as kepok banana peels. This research uses the Batch method by looking at the effect of pH and concentration of the solution on the absorption of Rhodamin B by kepok bananas (Musa balbisiana Colla). The results showed that the optimum conditions occurred at pH 3 with 58% absorption of Rhodamin-B, concentration of 120 mg / L with 96% absorption of Rhodamin-B. The interaction between adsorbent and adsorbate is determined by the study of adsorption isotherms including the Langmuir isotherm and the Freundlich isotherm. In order to obtain Langmuir equilibrium with qmax of 25.9067 mg/g. Characterization of kepok banana peel using FTIR to see functional groups after activation.Keywords : Biosorption, Rhodamin-B, kepok banana peel (Musa balbisiana Colla), Batch methodÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â

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Budhi Oktavia

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Contact Name Budhi Oktavia

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Journal Mail Official periodic@fmipa.unp.ac.id

Editorial Address Departemen Kimia, FMIPA, UNP Jalan Prof. Dr. Hamka, Air Tawar, Padang, Sumatera Barat

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Contact Name
Budhi Oktavia

Contact Email
budhioktavia@fmipa.unp.ac.id

Phone
-

Journal Mail Official
periodic@fmipa.unp.ac.id

Editorial Address
Departemen Kimia, FMIPA, UNP Jalan Prof. Dr. Hamka, Air Tawar, Padang, Sumatera Barat

Location
Kota padang,

Sumatera barat

INDONESIA