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

5 6 7 8 9

PEMANFAATAN SERBUK KULIT MANGGIS (Garcinia Mangostana) UNTUK PENYERAPAN ION SENG (II) Elda Gusneri; Bayharti Bayharti; Erda Sofjeni
Jurnal Periodic Jurusan Kimia UNP Vol 2, No 2 (2013)
Publisher : Departemen Kimia FMIPA UNP

One of types enviromental population are water that makey it by heavy metals to enter the water. To put the heavy metals can do with used material that absorb, that cheap we chan anywhere. One of the material is Garcinia Mangostana. This resert determination to known optimum condition absorbet from zing (II) ions by Garcinia mangostana, with variety particles size : 75, 90 and 109µm, pH : 3, 4, 5, 6, 7 dan 8, and concentration zing (II) ions solution : 10, 20, 30, 40 and 50 ppm. The measurment used by Atomic Absorption Spektrophotometer. From this yield resert found absorbant optimum condition zing (II) ions by Garcinia Mangostana can happened in particles size 75µm, pH 5 and concentration zing (II) ions solution 30 ppm with absorbent capacity 0,4250 mg/g.

Studi Inhibisi Korosi Baja oleh Ekstrak Biji Kakao (Theobroma cacao) dalam Medium Asam Klorida Nurfitriana .; Irma Mon; Yerimadesi Busmairizal
Jurnal Periodic Jurusan Kimia UNP Vol 1, No 1 (2012)
Publisher : Departemen Kimia FMIPA UNP

Cocoa (Theobroma cacao) is one of the many plants contain catechin. Catechin can form a complex with iron, a complex is formed on the surface of steel and the complex adsorbed may block the entry of oxygen, ions Cl- ion and other corrosive, so the rate of corrosion can be slowed down. This research aims to determine the efficiency of inhibition corrosion of steel by cocoa extract in hydrochloric acid medium. The method used is based on the gravimetric, namely based on the reduction of weight (weight loss) of steel before and after with corrosion. Surface analysis the steel is done using stereo microscopes. Of research results obtained that the cacao seed extract may decrease the rate of corrosion of steel in hydrochloric acid medium 0.01 M with corrosion inhibition efficiency 76,21% and results analysis by FTIR spectrophotometer to layer on steel surface indicate a complex formed between Fe-catechin.

Determination of Maximum Adsorption Capacity of the Napa Soil on Chromium Ions (III) Syukrya Ningsih; Mawardi Mawardi; Hary Sanjaya
Jurnal Periodic Jurusan Kimia UNP Vol 2, No 2 (2013)
Publisher : Departemen Kimia FMIPA UNP

Determination of maximum adsorption capacity of the Napa Soil on chromium ions (III) has been investigated, the aims of the research for to know the characteristics and maximum adsorption capacity of Napa soil on chromium (III). Experimentally, all steps were performed in series of experiment using a continuous techniques with respect to the influence of pH, initial chromium concentration, particle size, temperature heating adsorbent, solution flow rate, and determined the maximum adsorption capacity and adsorption affinity adsorbent was determined by the Langmuir Isotherm Equation and metal analysis carried out by Atomic Adsorption Spectrophotometer instrument. The results of this study showed that optimum condition at pH 5, initial chromium concentration is 250 mg/L, particle size is 850 mm, temperature heating adsorbent on 125°C, solution flow rate is 20 drops/min. Showed has the maximum adsorption capacity of the Napa Soil on chromium ions (III) is 3,28 mg/g.

KONDISI OPTIMUM PEMBENTUKAN KOMPLEKS ION LOGAM Cr(III) DAN Mn(II) DENGAN 8-HIDROKSIKUINOLIN MENGGUNAKAN SPEKTRONIK Mutiara Oksyarni; Budhi Oktavia
Jurnal Periodic Jurusan Kimia UNP Vol 8, No 1 (2019): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Industrial development will generate waste containing hazardous chemical substances one of heavy metal. Heavy metals are commonly used are chromium and manganese. Contamination of heavy metals in water is an environmental problem throughout the world because water is a source of life for all living beings .The purpose of this study is to look at the optimum condition of Cr(III) and the ion Mn(II) with oxine as a complexing agent for metal ion analysis using Spectronic. Determination of optimum conditions is to the optimum stirring time variation of the formation of complex compounds, variation the concentration and pH of the sample, then determination the time of stability of the formation of complex compounds. These results indicate that the complex compounds the Cr(III)-Oxinate and Mn(II)-Oxinate produce yellow complex. The optimum stirring time of complex formation of Cr(III)-Oxinate is 20 minutes with the optimum concentration of 20 ppm at optimum pH is pH 6 complex formation and stability of the complex at the time they reach the 40 minute. While Mn(II)-Oxinate have optimum stirring time 15 minutes with the optimum concentration of 15 ppm at optimum pH complex formation is pH 4 and reach a stability of the complex in the 45 minute.

Optimasi Daya Degradasi Reaktor Fotokatalitik TiO2/SiO2 terhadap Zat Warna Methyl Violet Afrianty Ramadhani; Hardeli Hamzah; Desy Kurniawati
Jurnal Periodic Jurusan Kimia UNP Vol 1, No 1 (2012)
Publisher : Departemen Kimia FMIPA UNP

Penelitian ini bertujuan untuk menentukan laju alir dan lama penyinaran optimum reaktor fotokatalitik guna mendegradasi zat warna methyl violet. Dalam penelitian ini, TiO2 Degussa P 25 digunakan dengan penambahan SiO2 untuk mencegah terjadinya rekombinan antara e- dan h+. Variasi laju alir yaitu, 80 ml/s, 95 ml/s, 110 ml/s, 125 ml/s dan 140 ml/s, sedangkan variasi lama penyinaran yaitu, 1, 2, 3, 4, 5, 6, dan 7 jam. Setelah dilakukan proses degradasi, absorbansi methyl violet diukur menggunakan spektrofotometer UV-Vis dan produk degradasi yang terbentuk pada kondisi optimum diidentifikasi menggunakan GC-MS. Karakterisasi Kristal TiO2/SiO2 menggunakan XRD. Dari hasil penelitian didapatkan kondisi optimum reaktor fotokatalitik yaitu pada konsentrasi 10 ppm, laju alir 95 ml/s dan lama penyinaran selama 6 jam. Pada kondisi ini diperoleh persentase degradasi sebesar 81,020% dengan jumlah pelapisan yang digunakan sebanyak 5x dan banyaknya kolom gelas yang digunakan 11 buah.

Pengaruh Penggunaan Sumber Silika Alumina Terhadap Karakteristik Semen yang Dihasilkan Mawardi Mawardi; Rianti Sihaloho; Bahrizal Bahrizal
Jurnal Periodic Jurusan Kimia UNP Vol 1, No 2 (2012)
Publisher : Departemen Kimia FMIPA UNP

A study concerning about the effect using of source silica alumina that shape napa land from Solok Selatan to characterization of cement produce. In this study can learning the effect using napa land to particle size of cement with tested the waste on sifter, not soluble, lose glowing, press force and composition chemichal of cement with XRF based variety composition is 0%, 5% dan 9.5% from total number of cement. Then the results are particle size, not soluble part and lose glowing of cement that produces increase as a increase using of napa land. However, not be valid on press force in 3, 7 and 28 days tested produce decrease. It caused the particle size of cement is increase as a increase of napa land composition. The largest using is 9.5% of total number of cement can be fill SNI standard 15-7064-2004.

DESAIN FOTOTRANSFOMATOR PLAT TEMBAGA (II) OKSIDA CuO PADA ASAM HUMAT Yuni Aulia Putri Djasli; Rahadian Zainul
Jurnal Periodic Jurusan Kimia UNP Vol 8, No 1 (2019): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

This study was conducted using a phototransformator reactor which was used to degrade humic acid with calcined photocatalyst of CuO plate for 1 hour at 4000C. This reactor was designed in hexagonal form made of glass with a thickness of 3 mm, in this reactor filled with 200 mL of humic acid with the help of sunlight. The phototransfomator process is carried out through a process of degradation of humic acid using a reactor which is performed at 1, 2, 3, 4, 5 hours. Absorption of visible light humic acid before and after degradation is 265 nm. The results show that in the outer light the highest value occurs at 2 hours which is 49.70% Keyword : photocatalyst, photransformator, plate CuO, degradation, %Degradation (%D), humic acid

Sintesis Keramik Refraktori Al2O3.MnO2.SiO2 Dengan Metoda Sol-Gel dan Sifat Fisikanya Dalam Berbagai Temperatur Kalsinasi Rahmi Muthia; Deski Beri; Ali Amran
Jurnal Periodic Jurusan Kimia UNP Vol 2, No 1 (2013)
Publisher : Departemen Kimia FMIPA UNP

Ceramic oxide Al2O3.MnO2.SiO2 ceramics has relatively high strength, tough electrical capacitance and temperature resistant. It’s synthesized by sol-gel methods using raw materials Tetraethyl Orthosilicates (TEOS), Al (NO3) 3.9H2O and Mn (NO3) 2.4H2O with calcination temperature variation of 900-1100oC. XRD (X-Ray Diffraction) analysis of ceramic Al2O3.MnO2.SiO2 showes peak °2Th=33.2875 intensity relatif=100%, °2Th=55.8688 intensity relatif 24,28%,°2Th=26.1289 intensity relatif 13,22%,°2Th=66.4815 intensity relatif 12,84%,°2Th=35.4375 intensity relatif 11,39%. Ceramic Al2O3.MnO2.SiO2 morphology by SEM (Scanning ElectronMicroscopy) showed that the ceramic at a temperature of 1100oC was homogeneous microscopic. Capacity as measured by the LCR meter instrument empirical equation F (C, T) = 0.01625 T - 11.0833 can be explained that the higher the calcination temperature the higher the value of the capacitor capacity.

Optimasi Tanah Napa Sebagai Adsorben ion Cu(II) Muhamad Firdaus; Mawardi Mawardi; Amrin Amrin
Jurnal Periodic Jurusan Kimia UNP Vol 2, No 2 (2013)
Publisher : Departemen Kimia FMIPA UNP

Has been done numerous studies to reduce levels of heavy metals in sewage waste products and many methods have been developed. Adsorption method with the right choice of adsorbent is a simple but quite effective method in removing heavy metals from wastewater. Napa soil contains high amount of silica and alumina which is 63.20% and 16.55%, the amount of silica and alumina in the soil napa almost the same with natural zeolite, so it can be used as an adsorbent. In this research, study has been conducted with the aim of determining the optimum condition of Copper(II) ion adsorption with Continuous system by napa soil adsorbent obtained from Aripan, Solok. In this research, was studied the effect of various parameters that affect the absorption capacity of the napa soil to adsorp Cu (II) ion, which is the pH of the solution, the initial concentration of the solution, the temperature of heating the adsorbent, adsorbent particle size, and the eluent flow rate. These results indicate that the optimum pH is 4, optimum initial concentration of the solution is 200 ppm, while optimum adsorbent heating temperature and optimum adsorbent particle size is 125°C and 1700 mm respectively, and the optimum flow rate is 20 drops / min. Research data obtained was in accordance with the Langmuir adsorption isotherm curve when plotted C / m as a function of C then was obtained a linear curve which means adsorption of Cu (II) ion by Napa soil takes place chemically, adsorption affinity constant and maximum adsorption capacity was determined by using Langmuir adsorption isotherm equation which is 2.483 and 0.169 mg / g respectively.

Analisis Kandungan Mangan (Mn) dan Tembaga (Cu) dalam Bijih Besi di Daerah Abai Sangir Kabupaten Solok Selatan secara Spektrofotometri Serapan Atom Ana Zulfa Nengsih; Zul Afkar; Bayharti .
Jurnal Periodic Jurusan Kimia UNP Vol 2, No 1 (2013)
Publisher : Departemen Kimia FMIPA UNP

A study concerning the analysis of the contain of manganese and copper in iron ore by using Atomic Absorption spectrophotometry. The goal of study is to determine the best solvent and the best volume of solvent that is best with particle size ≤ 63 μm. Manganese and copper analyzes performed using wet methods of destruction, where the destruction done with some variation. The first variation is solvent, that are concentrated HCl and concentrated HCl-HNO3 (3:1) or aquaregia, the second variation is solvent volume, that are 30 mL, 45mL and 60 mL. The results showed that the highest manganese levels obtained using 45 mL of concentrated HCl solvent is 7.2792% and the highest copper solvent obtained using 45 mL of concentrated HCl is 0.3359%.

Page 7 of 35 | Total Record : 343

5 6 7 8 9

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