Garuda - Garba Rujukan Digital

All

Jurnal Periodic Jurusan Kimia UNP

kimia
Website

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

10 11 12 13 14

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.

Sintesis dan Karakterisasi Magnetik Nanopartikel NiFe2O4 Menggunakan Ekstrak Kulit Buah Naga (Hylocereus Polyrhizus) Srifu Rahmawita; Alizar Ulianas
Jurnal Periodic Jurusan Kimia UNP Vol 10, No 1 (2021): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

In the past few years, intensive research has been carried out on magnetic nanoparticles, one of which is ferrite nanoparticles. These ferrite nanoparticles have the general formula MFe2O4 (where M = Mn, Co, Zn, Cu, and Ni). This nanoparticle is interesting because it has magnetic properties and is more efficient than other ferrite nanoparticles in its application. This research was conducted to synthesize NiFe2O4 nanoparticles with a hydrothermal method based on green chemistry by utilizing dragon fruit peel extract as a stabilizing agent. NiFe2O4 nanoparticles were characterized with a Gauss meter to measure their magnetic strength, FTIR, XRD and SEM were used to determine functional groups, particle size, and surface morphology of the nanoparticles. The greatest magnetic strength of magnetic nanoparticles is 0.19 mT with a composition of 25 mL dragon fruit peel extract, 2 mol Fe(NO3)3.9H2O and 1 mol Ni(NO3)2.6H2O. The FTIR test showed the presence of an OH group absorption peak at a wavelength of 3359.93 cm-1, the C = C group appeared at a wavelength of 1631.03 cm-1 and the C-O group at a wavelength of 1360.20 cm-1, which indicates that NiFe2O4 nanoparticles are protected by organic compounds (flavonoids ). Characterization of magnetic nanoparticles using XRD showed the shape of the nanoparticles produced in the form of cubic spinels with a particle size of 71.52 nm, while SEM characterization showed surface shapes such as irregular fine grains.

SINTESIS DAN KARAKTERISASI NANOPARTIKEL CaO SEBAGAI BAHAN PENGIKAT LOGAM BERAT Tika Indriani; Jon Efendi
Jurnal Periodic Jurusan Kimia UNP Vol 9, No 2 (2020): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

The increase in industrialization is in line with the increase in pollution of heavy metals that pollute the environment. Such waste needs to be managed properly for laws that are harmful to human health and the environment. Calcium oxide (CaO) is an exceptionally important industrial compound, which is used as toxic-waste remediation agent. Thermal decomposition method has some advantages such as simple process, low cost, ease of obtaining high purity product, etc. Characterization with the FTIR instrument showed the strong band at 3643 cm_1 corresponds to the O-H bonds from the remaining hydroxide. Bands at 1417 cm-1 and 866 cm-1 correspond to the C-O bond. The wide and strong bands at around 427 cm-1 and 553 cm-1 correspond to the Ca-O bonds. Characterization with the FTIR instrument showed the peaks were higher in intensity and narrower in spectral width, indicating that the products were of good crystallinity.

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 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.

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.

Pembuatan Karbon Aktif Secara Kimia Hijau dari Tandan Sawit dengan Aktivasi Ultrasonik Fatwa Insyirah; Miftahul Khair
Jurnal Periodic Jurusan Kimia UNP Vol 10, No 1 (2021): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Activated carbon from palm bunches by using ultrasonic assisted activation can increase the economic value of palm bunches. This study aims to determine the effect of the waves on the carbon produced and absorption of activated carbon as an adsorbent of lead metal ions (Pb2+). This study used the sonication method with ultrasonic wave activation. The variables observed were water content, ash content, volatile matter, fixed carbon and iodine absorption. Carbonization was conducted at mild condition of 300ºC for 60 minutes heating time. Ultrasonic irradiation (35 Watt, 40 KHz) for 15 minutes increases the carbon iodine number from 515.2358 mg/g up to 772.5459 which is higher than SNI 06-3730-1995 requirement of mg/ g 750 mg/g for activated carbon. FTIR spectra results show that activated carbon has -OH groups at wave numbers of 3000-3500 cm-1, C = C at wave numbers of 1550-1650 cm-1, CO at wave numbers of 1000-1260 cm-1 and CH at wave numbers of 810- 770 cm-1 . Adsorption test results showed that the prepared activated carbon was able to absorb Pb+2 ion at the optimum concentration of 40 mg/L. Adsorption isotherm study conducted by Freundlich equation produces a regression coefficient R2 = 0.4225 with a maximum absorption capacity of 7.4159 mg/ g.

Pengaruh Penambahan Ekstrak Inulin Umbi Dahlia terhadap Karakteristik Organoleptik Sinbiotik Set Yoghurt Meri Novia Nurman; Minda Azhar; Fitri Amelia; Budhi Oktavia
Jurnal Periodic Jurusan Kimia UNP Vol 9, No 2 (2020): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Synbiotic set yoghurt with the addition of an extract of inulin from dahlia tubers can increase the functional value of yoghurt. This study aims to determine the effect of inulin addition on the organoleptic characteristics of synbiotic set yoghurt. The method of research was the experimentation method. Synbiotic set yoghurt with the addition of an extract of inulin from dahlia tubers made by variation of the concentrations of 0.1%, 0.3% and 0.5%. Incubation was performed at 37°C for 20 hours . The organoleptic tests were conducted by 15 panelists on the color, aroma and texture of set yoghurt. Organoleptic data was processed using Wilcoxon test with significant level 95% (α = 0.05). Organoleptic set yoghurt showed that the addition of 0.3% inulin significantly affect the aroma of the yoghurt sour and the texture was more dense than the yoghurt comparison. The color of the set yoghurt produced slightly more white than the set yoghurt comparison, but no significant effect on α = 0.05. The results showed that the addition of 0.3% inulin dahlia tuber extract into the set yoghurt had a significantly affect the aroma and the texture of set yoghurt, and did not significantly affect the color of set yoghurt.

Pengaruh pH dan Konsentrasi Terhadap Penyerapan Zat Warna Rhodamin B Menggunakan Karbon Aktif Kulit Pisang Kepok (Musa balbisiana Colla) Muhamad Daviya Nur Fauzi; Edi Nasra; Ali Amran; Miftahul Khair
Jurnal Periodic Jurusan Kimia UNP Vol 10, No 2 (2021): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Rhodamine B is a textile dye which can cause environmental pollution. Rhodamin B dyes found in waters can cause damage to ecosystems both animals and plants, so a method is needed to overcome the impact of pollution by Rhodamin B waste. One of the most efficient methods is the adsorption method using activated carbon from Kepok banana peels (Musa balbisiana Colla ). The purpose of this study was to determine the optimum conditions for absorption and optimum absorption capacity of Rhodamine B by batch method with variations in pH, concentration, particle size, stirring time and stirring speed. The results showed the absorption capacity at optimum conditions for the absorption of Rhodamine B at pH 4 and concentration of 150 mg / L.

Page 12 of 35 | Total Record : 343

10 11 12 13 14

Filter by Year

2012 2025

Filter By Issues

All Issue Vol 14, No 2 (2025): PERIODIC Vol 13, No 3 (2024): PERIODIC Vol 13, No 2 (2024): PERIODIC Vol 13, No 1 (2024): PERIODIC Vol 12, No 3 (2023): PERIODIC Vol 12, No 2 (2023): PERIODIC Vol 12, No 1 (2023): PERIODIC Vol 11, No 3 (2022): PERIODIC Vol 11, No 2 (2022): PERIODIC Vol 11, No 1 (2022): PERIODIC Vol 10, No 2 (2021): PERIODIC Vol 10, No 1 (2021): PERIODIC Vol 9, No 2 (2020): PERIODIC Vol 9, No 1 (2020): PERIODIC Vol 8, No 2 (2019): PERIODIC Vol 8, No 1 (2019): PERIODIC Vol 5, No 2 (2016) Vol 2, No 2 (2013) Vol 2, No 1 (2013) Vol 1, No 2 (2012) Vol 1, No 1 (2012) More Issue

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

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

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

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

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

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