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Jurnal Periodic
Published by Universitas Negeri Padang
ISSN : -     EISSN : 23391197     DOI : https://doi.org/10.24036/p.v11i2.113715
Core Subject : Science, Engineering,
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
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Search results for , issue "Vol 9, No 1 (2020): PERIODIC" : 10 Documents clear
Sistem Fotoreaktor Elektrolit Biner, Terner, dan Kuarterner Berbasis Elektroda Cu Serabut ike sabaria; Rahadian Zainul
Jurnal Periodic Jurusan Kimia UNP Vol 9, No 1 (2020): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (967.513 KB) | DOI: 10.24036/p.v9i1.109625

Abstract

Solar cell (photovoltaic cell) is a device that has ability to convert sunlight energy into electrical energy by applying the photovoltaic principle. The photovoltaic principle is defined as a phenomenon of the appearance of an electric voltage due to the contact of two electrodes connected to a solid or liquid system when exposed to solar light. This study aims to determine the maximum power generated from the photoreactor, determine the effect of concentration variations and determine the efficiency of the photoreactor. The method in this study is an experiment using the photovoltaic effect on a photoreactor with CuO / Al electrodes and electrolytes of sodium chloride, sodium hydroxide and aluminum hydroxide. The variables in this study were measurement time and concentration. The variations in the concentration of sodium chloride, sodium hydroxide, and aluminum hydroxide electrolytes used were 0.25 M; 0.5 M; 0.75 M; and 1M. Current and voltage measurements are carried out 3 hours a day for 5 measurement days. The results showed that the optimum concentration was at a concentration of 0.75 M. The maximum power obtained was 0.0184 mWatt in NaCl solution, 0.072 mWatt in Na2SO4 solution and 0.224 mWatt in Al(OH)3 solution, the ability of the electrodes to produce electricity per area of each NaCl 0.00688mWatt / m2, Na2SO4 0.00263 mWatt / m2, Al(OH)3 0.00486 mWatt / m2 with the electrode cross-sectional area used is 0.0183m2. As well as the maximum efficiency of NaCl, Na2SO4, Al(OH)3 obtained is 0.8339%, 0.318% and 0.5890%. From the research results obtained: The greater the concentration of binary, ternary and quaternary solutions, the greater the power produced.
Pembuatan Karbon Aktif Melalui Karbonisasi Batang Kelapa Sawit Delviana Dwi Jaya; Miftahul Khair
Jurnal Periodic Jurusan Kimia UNP Vol 9, No 1 (2020): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1432.496 KB) | DOI: 10.24036/p.v9i1.108710

Abstract

Providing low cost activated carbon from oil palm trunk waste is beneficial to compete with low-cost non-halal sources. This research aims to produce low cost and easy preparation of activated carbon from oil palm trunks with employ carbonization process only. With an optimum carbonization temperature of 250 oC for 150 minutes of heating time, the results of the carbonization of oil palm trunk could fulfill the proximate analysis (yield, air content, ash content, carbon content, and iodine numbers) required by Indonesian National Standard SNI 06-3730-1995 for activated carbon. The proximate analysis obtained is a yield of 50.95%, the air content of 5.71%, ash content 6.57%, the carbon content of 18.55%, carbon content increased of 74.88%, and number rs iodine of 401,6537 mg/g.
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (505.856 KB) | DOI: 10.24036/p.v9i1.109626

Abstract

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.
Degradasi Zat Warna Remazol Yellow Fg dengan Metode Fotosonolisis Fauziah Rahma Yasin; Hary Sanjaya
Jurnal Periodic Jurusan Kimia UNP Vol 9, No 1 (2020): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v9i1.108744

Abstract

This research was conducted on the degradation of Remazol Yellow FG by using the photosonolysis method with the aim of determining the optimum time and the amount of TiO2 used to doping optimum ZnO in degrading Remazol Yellow FG dyes. The degradation percentage results obtained from the absorbance value measured using UV-Vis Spectrophotometer. (Λmaks) Remazol Yellow FG obtained from UV-Vis spectrophotometer measurements were 415 nm. The results showed that the optimum irradiation and sonication time to degrade Remazol Yellow FG was 60 minutes with a degradation percentage of 74.24%. The effect of variations in the amount of TiO2 doping showed optimum results at 20% ZnO-TiO2, with a degradation percentage of 80.54%. The XRD analysis results obtained ZnO, TiO2 and ZnO-TiO2 crystal sizes respectively 48.50-80.70 nm, 48.96-83.81 nm and 48.57-96.58 nm. UV-DRS analysis obtained band gap values respectively 3.36 eV, 3.22 eV and 3.11 eV
Kajian Pengaruh Konsentrasi Asam Nitrat Terhadap Kemurnian Silika dari Batu Rijang Nureztiti Azwar; Syamsi Aini
Jurnal Periodic Jurusan Kimia UNP Vol 9, No 1 (2020): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1503.612 KB) | DOI: 10.24036/p.v9i1.108839

Abstract

Chert  is stone that contains silica (SiO2) ≥ 60%. High silica content in chert stones can be used as an alternative source of potential silica in synthesizing sodium silicate (Na2SiO3) or other industrial needs. Purification is used to separate silica from other metals contained in the chert stone using HNO3. The qualitative and quantitative analysis of chert stone with XRF reveal that it contained a small amount of impurity oxide such as Al2O3, Fe2O3, MgO, K2O, CaO with the highest contain is SiO2 about 79.99%. After several purification steps, silica percentage from the chert stone increased to 86.45%. With this increasing percentage of silica, its potential to use it as precursor Na2SiO3.
Studi Pengaruh Faktor Suhu, Waktu, Massa Katalis dan Perbandingan Mol Dalam Produksi Biodiesel Dari PFAD Menggunakan Katalis Karbon Tersulfonasi Naka Yura; Umar Kalmar Nizar
Jurnal Periodic Jurusan Kimia UNP Vol 9, No 1 (2020): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (153.6 KB) | DOI: 10.24036/p.v9i1.108859

Abstract

Depletion and environmental problems caused by the use of fossil fuels, the need for alternatives to balance the availability of nature. Biodiesel synthesis has become a concern lately for renewable and sustainable fuels. In this work, biodiesel is synthesized from 5 different acid catalysts with the use of the same raw material, PFAD. Catalysts used for biodiesel synthesis are acid catalysts from glucose derivatives (D-glucose) acid catalysts from starches, acid catalysts from empty fruit bunches, acid catalysts from oil palm and bamboo branches, and acidic catalysts from glucose modified with oscillation flow. Acid catalyst from glucose derivative (D-Glucose) obtained conversion of FFA and FAME respectively 95.4% and 92.3% with the optimum reaction conditions was 2.5% of the catalyst mass, 10: 1 mole ratio of PFAD methanol, reaction temperature 75 C and reaction time for 2 hours. Acid catalyst from starch obtained conversion of FFA and FAME respectively were 94.6% and 90.4% with the optimum reaction conditions ie 2% mass of catalyst, 10: 1 mole ratio of PFAD methanol, reaction temperature of 75C and reaction time of 2 hours. Acid catalyst from empty fruit bunches obtained 98% FFA conversion with optimum conditions of 4% catalyst mass, 16: 1 mole ratio of PFAD methanol, reaction temperature of 100 C, time of 3 hours. Acid catalysts from oil palm and bamboo shells have FFA conversion and different FAME values, namely 97% and 95% for CKS, while 95.8% and 94.2% for bamboo with the same optimum conditions at 4% catalyst mass, 15: 1 comparison mole of methanol, temperature 65 C, reaction time 1 hour. And acid catalyst from glucose modified by oscillation flow gets FFA and FAME conversion of 97% and 94.21% with optimum reaction conditions, 2.5% of catalyst mass, 9: 1 mole ratio of methanol, temperature of 60C and reaction time for 50 minute.
Katalis Asam Padat Berbasis Karbon Tersulfonasi Pada Proses Pembuatan Biodiesel Muhammad Hiknul Ikhsan; Umar Kalmar Nizar
Jurnal Periodic Jurusan Kimia UNP Vol 9, No 1 (2020): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1191.32 KB) | DOI: 10.24036/p.v9i1.108945

Abstract

Biodiesel is a promising alternative energy source in the future. The method of making biodiesel is the reaction of fatty acid esterification with methanol assisted by a catalyst. The catalyst that is widely developed in the process of making biodiesel is solid acid catalyst. Especially those based on sulfonated carbon. The purpose of this article is to explain the function and role of sulfonated carbon-based solid acid catalyst in the biodiesel production process. Solid acid catalyst is synthesized by sulfonation process of calcined carbon using sulfuric acid or chlorosulphonic acid. The advantage of using a solid acid catalyst is that the catalyst can be regenerated so that it can be used in several cycles. The use of solid acid catalysts can produce biodiesel with a fairly high conversion percentage. Keywords— biodiesel, solid acid catalyst, sulfonation, sulfuric acid, chlorosulfonic acid
Pengaruh Konsentrasi Elektrolit Na2SO4 Dalam Produksi Gas Hidrogen Menggunakan Sensor MQ-8 Dinda Sahara; Rahadian Zainul
Jurnal Periodic Jurusan Kimia UNP Vol 9, No 1 (2020): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1374.6 KB) | DOI: 10.24036/p.v9i1.108858

Abstract

This study aims to analyze the effect of variations Na2SO4 concentration in producing hydrogen gas using the MQ-8 sensor. The method used is electrolysis. The electrolysis process is carried out in a container called a dry cell generator. In this study the Cu and Al electrodes are used as a place for the reduction-oxidation reaction. The use of Cu / Al electrodes in dry cell generators is arranged using layered or sandwich techniques. The use of dry cell generator in the production of hydrogen gas by using the MQ-8 sensor as a measuring tool to calculate the concentration of H2 gas is able to produce a maximum concentration of hydrogen gas of 37 ppm.
Sintesis, Karakterisasi dan Aplikasi Karbon Aktif dari Kulit Pisang Muhammad Patly; Edi Nasra; Sri Benti Etika; Umar Kalmar Nizar
Jurnal Periodic Jurusan Kimia UNP Vol 9, No 1 (2020): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (345.077 KB) | DOI: 10.24036/p.v9i1.108821

Abstract

Active Carbon from biomassa has been ideal material as absorbent of pollutant chemistry. Banana peel is a biomassa contain about 60% carbohydtrate and its existence is abundant in nature, it causes banana peel is great for making active carbon. This review is combination from some researches about active carbon from banana peel. It aims to comprehend the carbon active synthesis from banana peel, characterization of active carbon and application active carbon as absorbent chemical pollution. The result from this review show characteristic of active carbon as functional groups,crystalline structure, surface morphology, pore size and pore volume, percentage of absoption and absorption capacity of active carbon to pollutant chemistry.
Adsorpsi Zat Warna Rhodamin B Menggunakan Senyawa C-SinamalKaliks[4]Resorsinarena (CSKR) dengan Metoda Batch Ranti Septiana; Sri Benti Etika; Edi Nasra
Jurnal Periodic Jurusan Kimia UNP Vol 9, No 1 (2020): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (195.812 KB) | DOI: 10.24036/p.v9i1.108808

Abstract

AbstrakPertumbuhan penduduk yang semakin pesat menyebabkan banyak timbulnya masalah lingkungan, salah satunya pencemaran zat warna Rhodamin B di perairan. Perlu dicari alternatif untuk menguraikan limbah cair yang mengandung zat warna Rhodamin B tersebut. Salah satu metode yang efektif dalam pengendalian air akibat zat warna adalah melalui metode adsorpsi dengan sistem batch. Senyawa C-SinamalKaliks[4]Resorsinarena (CSKR) merupakan senyawa hasil sintesis dari limbah minyak kayu manis yang berpotensi besar dikembangkan sebagai adsorben zat warna berbahaya. Tujuan dari penelitian ini adalah untuk mengetahui kapasitas serapan maksimum dari CSKR terhadap Rhodamin B menggunakan parameter kondisi optimum yang diperkirakan mempengaruhi penyerapan Rhodamin B tersebut. Parameter yang digunakan pada penelitian ini meliputi pH, konsentrasi, kecepatan pengadukan dan waktu kontak. Pengujian untuk membuktikan metode analisis yang digunakan telah memenuhi persyaratan adalah dengan melakukan validasi metode analisis. Hasil penelitian menunjukkan kondisi optimum untuk penyerapan Rhodamin B terjadi pada pH 7, konsentrasi 100 mg/L, kecepatan pengadukan 200 rpm dan waktu kontak 60 menit. Kapasitas adsorpsi CSKR terhadap Rhodamin B adalah sebesar 11,3542 mg/g. Adsorpsi Rhodamin B oleh CSKR cenderung mengikuti pola isoterm Langmuir dengan nilai koefisien determinan (R) sebesar 0,662. Pada hasil analisis tersebut dilakukan validasi yang meliputi uji keseksamaan (presisi) serta LOD dan LOQ. Nilai uji presisi (% RSD) Rhodamin B yang dihasilkan sebesar 1,92 %. Nilai LOD dan LOQ pada metode analisa yang digunakan adalah 0,02487 mg/L dan 0,08291 mg/L. Hasil uji tersebut menunjukkan bahwa metode yang dilakukan telah memenuhi validasi yang baik. Kata Kunci : Adsorpsi, C-SinamalKaliks[4]Resorsinarena (CSKR), Rhodamin B, kapasitas adsorpsi

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