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Jurnal Periodic Jurusan Kimia UNP

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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 343 Documents

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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.

Pengaruh Crosslinker Terhadap Pembentukan Poli Asam Humat yang digunakan sebagai Dye pada Sel Surya DSSC Kenanga Anzulmi; Hardeli Hardeli
Jurnal Periodic Jurusan Kimia UNP Vol 9, No 2 (2020): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Dye Solar Cell (DSSC) is a device capable of converting solar energy into electrical energy. DSSCs are solar cells that use natural dyes to absorb photons from solar energy. The dye used in this study was poly (humic acid) which was obtained from the polymerization of humic acid using TMPGDE as a crosslinker. Polymerization aims to increase the efficiency of the dye in absorbing photons so that the resulting efficiency is better. The ITO glass coated with TiO2 / Cu was made using the sol-gel method. DSSC is assembled to form a sandwich structure and DSSC efficiency is measured using a digital multimeter. UV-Vis analysis of polymerized dyes showed increased adsorption and batochromic shift from 219nm to 269nm - 301nm. The poly (humic acid) formed in the FTIR analysis was characterized by the presence of epoxy groups with peak characteristics of 808 cm-1798 cm-1 and 750 cm-1 and peaks of 1565 cm-1, 1375 cm-1 according to the ester. , carbonyl, and carboxylic acids due to the CH strain. Maximum efficiency of 7.5% at a crosslinker volume of 200 μL.

Preparasi dan Karakterisasi Karbon Aktif dari Kulit Kacang Tanah (Arachis Hypogaea L.) Yolla Rama Wanda; Ananda Putra
Jurnal Periodic Jurusan Kimia UNP Vol 10, No 2 (2021): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Organic waste was a problem for society and government. Because that was due of environmental pollution. Organic waste was divided into organic waste which was easily broken down because has relatively short chemical chain and organic waste that does not decompose easily because has a relatively long chemical chain. One of the efforts that might be a solution for processing this waste by using into it activated carbon. The purposes of that experiment were to prepare and characterize activated carbon from peanut shell (Arachis Hypogaea L.). Carbon from peanut shell was prepared by pyrolysis at 300˚C, 350˚C and 400˚C for 1 hour. After pyrolysis, the carbon from the peanut shell was mashed and filtered using 150 μm sieve. And then, tested the moisture content, ash content, vapor content, and bound carbon content. The resulted showed the highest bound carbon content pyrolysis at 350˚C. The carbon was activated by chemical activation, with various of compounds and different concentrations. The resulted showed the highest bounded carbon content was found 64,7%. The best Activation reagent was ZnCl2 of 6N and made improved bounded carbon content was 85,78%. The water content was found 1,1%, the ash content was found 1,34%, and the vapor content was 12,88%. Based on the resulted activated carbon from peanut shell comformed the SNI 06-3730-1995.

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 %.

Sintesis Silika Mesopori Menggunakan Bahan Dasar Na2SiO3 yang Dihasilkan dari Pasir Silika dengan Metoda Sol-Gel Armelia Ananda; Syamsi Aini
Jurnal Periodic Jurusan Kimia UNP Vol 10, No 1 (2021): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

The synthesis of natural silica-based mesoporous silica is continuously being carried out, especially to obtain silica with high crystallinity and larger pores from high water absorption. In this study, the synthesis of mesoporous silica using the sol-gel method by adding hexane and varying the mass addition of Pluronic 104 surfactant (2 g, 4 g, 6 g). The synthesized silica was characterized using XRD.. The results of measurements using XRD showed that the diffraction pattern appeared as the relevant peak for the three products with standard mesopore silica diffraction patterns, namely wide and low peaks at 2ϴ 22.7; 21.8; 22.1 for the products SM02, SM04 and SM06 respectively. Meanwhile, the highest intensity / crystallinity given by the SM06 sample.

Pembuatan Karbon Aktif dari Limbah Batang Kelapa Sawit (Elaeis guineensis) Menggunakan Metoda Sonikasi Sebagai Adsorben Rhodamin B Rifaat Alfairuz; Miftahul Khair
Jurnal Periodic Jurusan Kimia UNP Vol 10, No 2 (2021): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

The activated carbon of palm oil stem waste has been prepared by activation of ultrasonic waves. The carbonization process was carried out at a temperature of 250oC for 75 minutes. Activation with 42 KHz ultrasonic waves for 20 minutes was able to increase the iodine number value from 317,275 mg / g to 794,133 mg / g which meets the Indonesian National Standard NO 06-3730-1995, namely 750 mg / g. The optimum activated carbon was characterized using a FTIR spectrophotometer. The adsorption results showed that they were able to absorb Rhodamine B dye at an optimum concentration of 250 mg / L. The study of the adsorption isotherm is the Langmuir isotherm, which produces a correlation coefficient value close to one (R2 = 0.9985) with a maximum absorption capacity of 4.537 mg / g. FTIR spectra results show that there is a functional group –OH at wave number 3077.61 cm-1 shifted to 3079.30 cm-1, C = C at wave number 1590.29 cm-1 shifted to 1591.14 cm-1, and CO at the wave number 1212.42 cm-1 it shifted to 1216.83 cm-1 and the carbon characteristics test met the SNI 06-3730-1995 standards.

PENYERAPAN ZAT WARNA MALACHITE GREEN MENGGUNAKAN KULIT PISANG KEPOK (Musa balbisiana Colla) SEBAGAI BIOSORBEN DENGAN METODE BATCH Riva Silvia; Edi Nasra; Budhi Oktavia; Sri Benti Etika
Jurnal Periodic Jurusan Kimia UNP Vol 9, No 2 (2020): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Biosorption of Malachite green dyes using kepok banana peel (Musa balbisiana Colla) as a biosorbent has been carried out. The purpose of this study was to determine the optimum conditions for absorption of Malachite green by kepok banana peel biosorbent (Musa balbisiana Colla). The method used is the batch method. The variables tested were pH of the solution, concentration, particle size. The wavelength of Malachite green is 618 nm measured by the UV-Vis Spectrophotometer. The results showed that the optimum conditions for absorption occurred at pH 3, a concentration of 100 ppm, and a particle size of 150 μm with an absorption capacity of 8,6778 mg/g. The adsorption isotherm of Malachite green with kepok banana peel (Musa balbisiana Colla) biosorbent tends to follow the Freundlich isotherm with a determinant coefficient (R2) of 0.9996.

Solidifikasi Logam Berat Cu(II) Pada Limbah Cair (Lumpur Berminyak dan Oli Bekas) Dengan Menggunakan Semen Portland Fany Fahran Jany; Jon Efendi
Jurnal Periodic Jurusan Kimia UNP Vol 9, No 2 (2020): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Abstract- Very rapid development of the industry has led to increased levels of heavy metals in the environment. Heavy metals are the main group of inorganic pollutants that can contaminate wastewater in the environment. One of them is copper metal (Cu). Copper metal has a reddish brown color. This metal is very poisonous, and in high concentrations it can interfere with human health, such as damaging the respiratory system, mental disorders in children, cancer, death, and so on. This can be anticipated in various ways, one of which is the Solidification Method. The principle of the solidification method is to bind compounds in hazardous waste into insoluble / solid form and trap the waste in solids. The paramenter analysis used is the TCLP (Toxicty Characteristic Leaching Out Procedure) test. From the research data, it was found that the highest concentration of oily sludge was 0.19 mg / L and the lowest was 0.15 mg / L. In used oil waste, the highest concentration is 1.6 mg / L. From the solidification results of oily sludge and used oil waste, it can be concluded that the value of oily sludge waste is smaller than used The oil waste, and it can still be said to be safe to dispose of into the environment. The higher the cement solidification in the sample test, the higher the Cu content in the sample.

Optimasi Penyerapan Zat Warna Malachite Green Menggunakan Karbon Aktif dari Kulit Pisang Kepok (Musa balbisiana Colla) Sintha Hafizhah Yonel; Edi Nasra; Budhi Oktavia; Sri Benti Etika
Jurnal Periodic Jurusan Kimia UNP Vol 10, No 2 (2021): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Malachite green is a synthetic dye that is widely used in the textile industry. Textile industry waste that is not treated properly will pollute the aquatic environment. The threshold value for the permissible concentration of Malachite green in waters is around 0.01 mg/L. The adsorption method is an alternative method used to remove dyestuff waste. This study used a batch method which aims to determine the optimum conditions for absorption and the maximum absorption capacity of Malachite green using activated carbon from the peel of Kepok banana (Musa balbisiana Colla). In this study, treatments were carried out using variations in solution concentration and contact time. The results of this study, obtained the absorption capacity at optimum conditions concentration 150 mg/L and contact time 150 minutes with absorption capacity of 9.2429 mg /g with absorption percentage of 97.9734%. Mechanism the absorption of Malachite green follows the equation Langmuir isotherm with a determinant coefficient (R2) of 0,9989.

Preparation and Characterization of Activated Carbon From Mangosteen Peels (Garcinia Mangostana L) Rahmiatul Husna; Ananda Putra
Jurnal Periodic Jurusan Kimia UNP Vol 9, No 1 (2020): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

The purpose of this experiment was to prepare and characterize activated carbon from Mangosteen peels (Garcinia mangostan L). Carbon from Mangosteen peels was prepared by pyrolysis method at 300°C for 1 hour. This carbon was activated by chemical activation process with various activating reagent and concentration. The activated carbon was characterized using Indonesian Industry Standard (SNI 06-3730-1995), that is maximum water content of 15%, maximum vapor content of 25%, maximum ash content of 10% and bounded carbon content at least 65%. The results showed that the highest bounded carbon content obtained from pyrolysis was 78,09%. The best activating reagent was HCl with concentration of 4N that improved the bounded carbon to 87,84%. The water content, ash content, and vapor content of activated carbon was obtained as follows, 6,11%, 1,97%,and 10,19%. Based on this results, activated carbon of mangosteen peels conformed the (SNI 06-3730-1995) values and will be applied as a thermoelectric material.

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Contact Name
Budhi Oktavia

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budhioktavia@fmipa.unp.ac.id

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periodic@fmipa.unp.ac.id

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

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Kota padang,

Sumatera barat

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