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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 16 Documents

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Search results for , issue "Vol 10, No 2 (2021): PERIODIC" : 16 Documents clear

Degradasi Zat Warna Metil Merah Dengan Katalis ZnO Menggunakan Metode Fotosonolisis Putri Ayu; Ananda Putra; Hary Sanjaya; Indang Dewata; Yohandri Yohandri
Jurnal Periodic Jurusan Kimia UNP Vol 10, No 2 (2021): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

The research that has been carried out on the photosonolytic degradation of methyl red uses a ZnO as a catalyst which aims to determine the effect of time and catalyst mass on the degradation of methyl red. The time of degradation is about 30 to 150 minutes while about 0,05 grams to 2,5 grams of catalyst mass is used. The measurement results of the Uv-Vis spectrophotometer were obtained at a wavelength of 435nm with an absorbance 0,2471. In the variation of the degradation time, the highest result was obtained at 60 minutes which was 75,27%, while the ZnO mass variation carried out at the optimum time of 60 minutes obtained the highest results in the addition of 0,15 grams ZnO with the percentage of degradation (%D) of 47,79%. This study shown that hydroxyl radicals (∙OH) takes as a main control in degrading of methyl red.

Optimasi pH dan Konsentrasi Kopresipitan pada Proses Kopresipitasi Ion Cd2+ menggunakan Al(OH)3 Febri Andini Putri; Edi Nasra
Jurnal Periodic Jurusan Kimia UNP Vol 10, No 2 (2021): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Heavy metal in water content may cause serious harm to health and environment. Cd2+ as the one of trace elements contained in water poses certain challenges to be measured and handled properly. Coprecipitation of Cd2+ with Al(OH)3 as coprecipitant is characterized by Atomic Absoprtion Spectrophotometry accoording to Beer's Law. Optimum condition of this process is obtained by varying pH of the solution and coprecipitant concentration. The result indicate pH of 9 and Al3+ concentration of 0,2 M as the optimum conditions, with Cd2+ absorbed to 0,749 ppm.

Degradasi Zat Warna Methylene Blue dengan Katalis ZnO-CuO Menggunakan Metode Fotosonolisis Nilam Nilam; Hary Sanjaya; Yohandri Yohandri
Jurnal Periodic Jurusan Kimia UNP Vol 10, No 2 (2021): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Photosonolysis method has been done to degrade Methylene blue in the solution. This study aims to determine the effect of radiation time and concentration of doping CuO. The absorbance of the samples was measured with a UV-Vis spectrophotometer. The maximum time to degrade Methylene blue using a ZnO catalyst was obtained at 120 minutes with percentage degradation 87,95%. The maximum doping concentration of CuO on the ZnO catalyst for 120 minutes was obtained at ZnO-CuO 20% catalyst with percentage degradation 90,33%. Analysis of catalyst characterization with a UV-DRS spectrophotometer obtained a band gap value of 3.30 eV.

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.

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.

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.

Degradasi Rhodamin B dengan Katalis ZnO-Fe Menggunakan Metode Fotosonolisis Wahyunita Wulandari; Hary Sanjaya; Yohandri Yohandri
Jurnal Periodic Jurusan Kimia UNP Vol 10, No 2 (2021): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Degradation of rhodamin B with ZnO-Fe impetus utilizing photosonolysis strategy has been finished with some variety. The objectives of this examination is to know impact of variety radiation times, groupings of doping Fe, and portrayal some spectrophotometer. The absorbance of tests when debasement was recognized by an UV-Visible spectrophotometer. The yield showed greatest season of irradation to degradate rhodamin B at 150 minutes, with the most rate debasement at any point is 91,19%. The occasions will used to figure out which the best fixation doping to degradate rhodamin B. For the variety of impetus fixation was acquired at ZnO-Fe 20% with a debasement level of 23,10%. Examination ZnO doping Fe utilizing UV-DRS(Diffuse Reflectance Spectroscopy) got the greatest band hole esteem is 3,24 eV.

Pengaruh Agen Pengikat Silang dan Waktu Polimerisasi Poli Asam Tanat pada Efisiensi Dye Sensitized Solar Cell (DSSC) Yusnita Pitri Mayenti; Hardeli Hardeli; Hary Sanjaya; Sri Benti Etika
Jurnal Periodic Jurusan Kimia UNP Vol 10, No 2 (2021): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Abstract— Dye sensitized solar cell (DSSC) is a device that can convert light energy into electrical energy. Research on the DSSC continues to look for DSSCs with high efficiency values. The efficiency of DSSC is influenced by many things, one of which is the ability of the dye to absorb light energy. The dye used in this research is poly tannic acid obtained from the polymerization process of tannic acid. This polymerization is carried out to improve the ability of the dye to absorb sunlight. TiO2 / Cu paste was made using the sol gel method and coated on ITO glass using the doctor blade method. The formed layer is immersed in dye while the counter electrode is made with a candle flame. The DSSC was assembled to form a sandwich structure and electrolyte was dropped on the two electrodes. DSSC measured the voltage generated with a multimeter. The results of the UV-Vis analysis on the polymerized dye showed a bathochromic shift and an increase in the absorbance value. The results of FTIR analysis on polymerized dyes appeared ether groups in the range 1050–1250cm-1. The presence of this ether group indicates the formation of tannic acid poly. The highest DSSC efficiency found with the polymerized dye was 7.69% with polymerization time of 14 hours and the volume of crosslinking agent (TMPGDE) 115µL.Keywords: DSSC, Polymerization, Tannic Acid, Poly Tannic Acid, Efficiency

Kelarutan Zat Warna Organik dalam Gelasi Mikroemulsi Water In Oil Sistem dari Air Triton X-100 dan Sikloheksana Mery Khasanah; Ananda Putra
Jurnal Periodic Jurusan Kimia UNP Vol 10, No 2 (2021): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v10i2.112474

Abstract —solubility of dyes from organic matter powder of dragon fruit peel of blue telang flower and turmeric in the gelation of water in oil mikroemulsion of the system of water (pH 4,5 and pH 9,5), Triton X-100, cyclohexane and its application for ink. For water pH 4,5 (controlled by nitric acid) and water pH 9,5 (controlled by potassium hydroxide), the formation of gel from water in oil microemulsion was crieddent using the so-gel mhetod by Tetraethylorthosilicate (TEOS) which underwent hydrolysis with water for from a gel. It was indicated that the solubility of the dye from organic matter in the gelation of water in oil microemulsion is at pH 9,5 dragon fruit peel powder at 0,0215 and the lowest pH 4,5 powder of blue telang flower powder is 0,0120Keywords — solubility, organic dyes, gel, water in oil microemulsion, ink.

Pengaruh Penambahan Prebiotik Inulin dari Chicory Terhadap Karakteristik Organoleptik Sinbiotik Set Yoghurt Vegi Kurnia Navida; Minda Azhar; Iryani Iryani; Umar Kalmar Nizar
Jurnal Periodic Jurusan Kimia UNP Vol 10, No 2 (2021): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Increasing the functional value of yogurt can be done by combining prebiotics with probiotics, known as yoghurt set synbiotics. This study aims to determine the effect of adding inulin chicory to the organoleptic synbiotic yoghurt set. This research is an experimental research. The yoghurt synbiotics made have variations in inulin concentrations (0.1%, 0.3%, 0.5%). Preparation of yoghurt synbiotic set was carried out at an incubation time of 20 hours, temperature 37°C. The analysis of the organoleptic test results showed that in the addition of 0.3% inulin, there was a significant difference in the aroma and texture of the yogurt synbiotic set, while the color was not significant between the comparison yogurt with the addition of 0.3% inulin.

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Contact Name Budhi Oktavia

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

Location Kota padang, Sumatera barat INDONESIA

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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