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Jurnal Periodic Jurusan Kimia UNP
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 343 Documents
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Peningkatan Kemampuan Degradasi ZnO Terhadap Rhodamin B Dengan Impregnasinya Pada Karbon Aktif Dari Ampas Tebu Winda Anisa; Miftahul Khair
Jurnal Periodic Jurusan Kimia UNP Vol 11, No 3 (2022): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v11i3.115994

Abstract

Research has been carried out with the aim of knowing the characteristics of activated carbon made from bagasse waste to be used as a support for zinc oxide (ZnO) catalysts using the impregnation method and the ability of the catalyst to degrade Rhodamin B dyes. Activated carbon is impregnated with Zn(NO3)2.6H2O with variations activated carbon 5%, 10%, 15%, 20%, and 25% to 15 gram mass of Zn(NO3)2.6H2O. The impregnated KA/ZnO was then contacted with 10 ppm Rhodamine B dye with a degradation time of 120 minutes. The mass of KA/ZnO used was 25 mg, 50 mg and 75 mg. The FTIR (Fourier Transform Infra Red) results of the KA/ZnO catalyst show that Zn-O molecules have entered into the pores of the activated carbon marked by the appearance of absorption peaks at wavelengths of 426.28 cm-1, 419.52 cm-1, and 437.85 cm-1 . The results of UV-Vis spectrophotometer measurements obtained the highest degradation percentage of Rhodamin B dye, namely 88.23% at 10% KA/ZnO with a catalyst mass of 75 mg.
Potensi Pemanfaatan Sabut Pinang (Arecha cathecu L.) Kecamatan Lengayang sebagai Sumber Karbon untuk Bahan Baku Material Maju Nadia Nadia; Umar Kalmar Nizar
Jurnal Periodic Jurusan Kimia UNP Vol 12, No 1 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v12i1.117077

Abstract

Carbon material is one example of the development of advanced materials. Carbon is the result of the decomposition of an organic compound through an incomplete carbonization process. Carbon can be utilized from organic waste materials such as areca fiber. The composition of areca nut is 32.98% hemicellulose, 7.20% lignin, 53.20% cellulose, and 4.81% other components remaining in areca nut. Cellulose in betel nut can be used as a source of advanced materials. The method used for the manufacture of areca fiber carbon is calcination at a temperature variation of 250oC, 300oC and 350oC. Proximate analysis of carbon was carried out by testing the ash content, vapor content and bound carbon content. In this research, the standard used is SNI 06-3730-1995. The results of the analysis show that the ash content increases with the increase in the calcination temperature, while the vapor content decreases with the increase in the calcination temperature. The carbon content obtained decreases with increasing calcination temperature. The optimum condition of areca fiber carbon that is close to SNI 06-3730-1995 is obtained on carbon with a calcination temperature of 250oC, with an ash content of 8.85%, a vapor content of 3.12% and a bound carbon content of 88.03%.
Pengujian Aproksimat Karbon Limbah Sabut Kelapa (Cocos nucifera) Nanditho Azima Putra; Ananda Putra
Jurnal Periodic Jurusan Kimia UNP Vol 12, No 1 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v12i1.116901

Abstract

The carbon approximation test of coconut coir has been successfully carried out. Carbon made at a temperature of 350 oC with variations in the length of time of 30, 45, 60 and 75 minutes was found to meet the test levels of SNI No. 06-3720-1995 and the best carbonization time for 60 minutes. In coconuts, coconut fiber is the dominating part because almost 35% of the weight of coconuts is coconut husk. The existence of waste is supported by the average production of coconuts in Indonesia of 15.5 billion eggs/year, so that the available material is quite a lot. This is a support in producing carbon because 60% of lignin has a carbon content.
Pengaruh Penambahan Titanium Dioksida (TiO2) terhadap Sifat Konduktor dari Polianilin (PANI) Safira Wulandari; Umar Kalmar Nizar
Jurnal Periodic Jurusan Kimia UNP Vol 12, No 1 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v12i1.117166

Abstract

This study aims to determine the effect of the addition of TiO2 dopant on the electrical conductivity of polyaniline synthesis using the photopolymerization method and characterization with Fourier Transform Infrared (FTIR) and Diffuse Reflectance UV-Vis (DR UV-Vis). Synthesis of polyaniline was carried out by mixing aniline monomer with Ethylene Glycole Dimetacrylate (EGDMA) as a crosslinker and Dimethoxy Phenylacetophenone (DMPP) as an initiator, and the addition of TiO2 dopant as much as 0.006 g, 0.011 g, 0.016 g, 0.021 g and 0.026 g. The obtained PANI and PANI/ TiO2 were measured for electrical conductivity using the Four Point Probe (FPP), it was found that the optimal electrical conductivity value was 12.60 × 10-3 S/cm which was owned by PANI added with TiO2 of 0.006 g.
Sintesis dan Karakterisasi Pigmen Merah Hematit (α-Fe2O3) dari Pasir Besi Kabupaten Sijunjung, Sumatera Barat, Indonesia Ahmad Fajri Soekansa; Nafis Sudirman; Syamsi Aini
Jurnal Periodic Jurusan Kimia UNP Vol 12, No 1 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v12i1.115856

Abstract

Hematite red pigment has been successfully synthesized from natural iron sand originating from the Sijunjung area, West Sumatra, Indonesia. The purified natural iron sand contains magnetic dioxide particles to produce ferric ions (Fe3+) which can be used as precursors for the synthesis of the red pigment hematite. Hematite red pigment synthesis was carried out by coprecipitation method with NaOH precipitating agent. The red pigment hematite was synthesized by varying the mass solubility of 1 g, 1.5 g, and 2 g which were reacted with 4 M, 5 M, and 6 M HCl to produce a precursor with the highest ferric ion solubility. The precursor with the highest ferric ion solubility was formed from the reaction between 1 g of pure iron sand and 6 M HCl. The second variation was the increase in calcination temperature, namely 650oC, 700 oC, 750oC, and 800oC, with a calcination temperature of 800oC producing the brightest red pigment hematite. The higher the calcination temperature causes an increase in the brightness of the synthetic red pigment hematite. The characterization was carried out using XRD to see the crystal structure of the product and UV-Vis to see the absorption wavelength.
Analisis Proksimat Karbon Batang Jagung (Zea mays) di Kecamatan 2 x 11 Kayu Tanam sebagai Sumber Material Maju Risya Yelfika; Umar Kalmar Nizar
Jurnal Periodic Jurusan Kimia UNP Vol 12, No 1 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v12i1.117066

Abstract

Carbon material is a material obtained from carbonized organic materials such as charcoal and biomass waste that is processed into carbon. Corn stalks contain cellulose, hemicellulose, and lignin which have the potential to be used as carbon sources for advanced materials. This study aims to analyze carbon from corn stalks. Corn stalks were carbonized with temperature variations of 250˚C, 300˚C, 350˚C, 400˚C, and 450˚C. The carbon of corn stalks formed was carried out by proximate analysis by testing the vapor content, ash content, and bound carbon. The results of the analysis show that the higher the carbonization temperature, the lower the vapor content and the bound carbon content, while the higher the ash content. In this study, the results of the carbon analysis of corn stalks in  Kecamatan 2 x 11 Kayu Tanam according to SNI 06-3730-1995 were samples at a carbonization temperature of 250˚C.
Ekstraksi Silika (SiO2) dari Mineral Tanah Napa Pesisir Selatan Asy Syifa Hanawindy; Mawardi Mawardi
Jurnal Periodic Jurusan Kimia UNP Vol 12, No 1 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v12i1.116507

Abstract

Silica is a mineral with potential for use in a variety of industries. Silica can be produced an extraction process using natural materials such as Napa Soil from the South Coast as the raw material. In this study, the extraction method used is a modification of the alkali fusion and hydrothermal methods. The Napa soil was calcined at 750°C for 4 hours, then reacted with NaOH (2; 4 ; 6; and 8) M  at 95°C to form Na silicate, then 6M HCl was added to form silicic acid and finally the silica gel was dried to form SiO2 . The extracted silica was also characterized using XRF which showed the silica purity level increased to 61.84%. The maximum extraction yield was obtained with an 8 M NaOH concentration of 30.78 %, according to the data. The extracted silica was also analyzed using XRF, which confirmed that the purity level of the silica had enhanced to 61.84 %.
Potensi Daun Serai (Cympogon citratus) sebagai Sumber Karbon untuk Material Maju Syilla Nurvidayah; Umar Kalmar Nizar
Jurnal Periodic Jurusan Kimia UNP Vol 12, No 1 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v12i1.117110

Abstract

The purpose of this study was to determine the optimal carbonization temperature of lemongrass leaves to obtain an environmentally friendly, economical and quality product that could potentially be a carbon source for advanced materials. Lemongrass leaf carbon is synthesized by the carbonization process. The method in the formation of lemongrass leaf carbon is calcination using a furnace at a temperature variation of 250°C, 300°C and 350°C for 1 hour. Carbon will be tested for ash content, vapor content, and bound carbon content. Carbon quality requirements based on SNI 06-3730-1995. In conclusion, the optimal carbonization temperature is 250°C with an ash content of 18.99%, a vapor content of 2.91% and a bound carbon content of 78.10%.
Degradasi Zat Warna Malachite Green Menggunakan Metode Sonolisis dengan Bantuan Katalis ZnO Yollanda Bunga Osya; Hary Sanjaya
Jurnal Periodic Jurusan Kimia UNP Vol 12, No 1 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v12i1.116832

Abstract

Malachite green is a dye that is widely used in the textile industry. Malachite green has toxic properties that can cause cancer, skin and eye irritation, and respiratory toxicity. Malachite green is difficult to degrade in waste so it requires serious handling. This study aims to determine the optimum time and optimum mass of  ZnO catalyst for malachite green degradation by sonolysis method. The absorbance value was obtained using a UV-Vis spectrophotometer. The results of this study stated that the malachite green solution had a maximum wavelength of 617.2 nm. The optimum time to degrade malachite green with ZnO catalyst was obtained at 30 minutes with %D 85.04% and the optimum mass of catalyst to degrade malachite green with ZnO catalyst was obtained at 0.1 gram with %D 83.31%.
Potensi Kulit Ubi Kayu (Manihot Esculenta) di Kecamatan Koto Xl Tarusan sebagai Sumber Karbon untuk Material Maju Wini Andriani; Umar Kalmar Nizar
Jurnal Periodic Jurusan Kimia UNP Vol 12, No 1 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v12i1.117092

Abstract

The purpose of this research is the optimal carbonization temperature, to obtain economical, environmentally friendly and quality carbon from cassava peel waste. Cassava peel carbon is synthesized through a carbonization process. The method used to manufacture carbon from cassava peel is by calcining it in a furnace at various temperatures of 250℃, 350℃, and 450 for 1 hour. The carbon obtained was tested for ash content, vapor content and bound carbon. In this study, the standard used to determine the characteristics of the carbon produced is the Indonesian National Standard (SNI 06-3730-1995). The results showed that the optimal carbonization temperature for cassava peel carbon was 250℃, where the ash content was 7.14%, the vapor content was 5.32% and the bound carbon was 87.54%. Based on these results, it can be concluded that cassava peel waste can be used as carbon that meets the Indonesian National Standard (SNI 06-3730-1995).

Page 22 of 35 | Total Record : 343

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