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Jurnal Periodic Jurusan Kimia UNP

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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

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.

Efek Crosslinker terhadap Performa Komposit Selulosa Bakteri – Ekstrak Daun Kembang Sepatu ( Hibiscus rosa- Sinensis L ) Egidia Mayendra; Minda Azhar; Indang Dewata; Ananda Putra
Jurnal Periodic Jurusan Kimia UNP Vol 10, No 2 (2021): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Abstract — Bacterial cellulose can be applied in various fields such as biomedical fields, separation membranes, artificial blood vessels, and substrates for tissue engineering cartilage. Bacterial cellulose still has low mechanical properties, so a bacterial cellulose composite with hibiscus leaf extract (KSB-EDKS) is formed to obtain new, better materials. The purpose of this study was to determine the effect of adding starch as a crosslinker, on the mechanical, physical, and structural properties of KSB-EDKS. Bacterial cellulose is produced from a mixture of coconut water, sugar and urea. Then fermented with acetobacter xylinum for 14 days. Bacterial cellulose formed in composites with hibiscus leaves is called bacterial cellulose extract of hibiscus leaves (KSB-EDKS). KSB-EDKS will be characterized by testing tensile strength, moisture content, structural analysis using FTIR and determining the degree of crystallinity using XRD. The addition of a crosslinker can reduce the percentage of KSB-EDKS water content. The best tensile strength test results were KSB-EDKS added with 3% tapioca flour solution with a value of 38.3 MPa, the FTIR spectrum showed that the functional groups in cellulose had just shifted in the range of the same wave number values and for the degree of crystallinity the addition of starch as crosslinker can reduce the degree of crystallinity in KSB-EDKS. Keywords — Bacterial cellulose, Composite, Crosslinker, Hibiscus leaves

Sintesis dan Karakterisasi Karbon Aktif dari Ampas Tebu Diaktivasi menggunakan Gelombang Mikro Hendra Zalmi; Miftahul Khair
Jurnal Periodic Jurusan Kimia UNP Vol 10, No 2 (2021): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Synthesis of activated carbon and physical activation using microwaves. Sugarcane bagasse is carbonized at a temperature of 250 oC for ninety minutes and is activated using microwaves which refer to the principles of green chemistry. Microwave one of the electromagnetic waves that can be at a frequency of 2450 khz. Microwaves are able to work as activator of 450 watts of activated carbon for two minutes and the iodine number is from 203.0560 mg / g to 836.9365 mg / g which meets the indonesian national standard no 06-3730-1995 which is 750 mg / g. Activated carbon was characterized optimally using a FTIR spectrophotometer. The spectra results show the presence of a functional group -OH at wave number 3350-3252 cm-1, C=C at wave number 1570-1320 cm-1, C-O at wave number 1300-900 cm-1, and ch at wave number 995-670 cm-1. Adsorption of activated carbon against rhodamine dye obtained optimal conditions with a concentration of 350 mg / L, time of 120 minutes which has an adsorption capacity of 7.251724 mg / g.

Pembuatan dan Karakterisasi Karbon aktif dari Pelepah Kelapa Sawit dengan Aktivasi Ultrasonik sebagai Adsorben Rhodamin B Fajar Sa'bandi; Syamsi Aini; Umar Kalmar Nizar; Miftahul Khair
Jurnal Periodic Jurusan Kimia UNP Vol 10, No 2 (2021): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

The manufacture of activated carbon from oil palm frond waste using an ultrasonic wave activator has been successfully carried out. The carbonization process was carried out at a temperature of 250ºC for 90 minutes. Activation with ultrasonic waves (35 Watt, 40 KHz) for 30 minutes was able to increase the iodine number from 330.06 mg/g to 799.14 mg/g and was in accordance with SNI No.06-3730-1995. FTIR spectra show that the activated carbon of oil palm fronds has a functional group –OH at wave number 2900-3200 cm-1, C=C at wavenumber 1500-1600 cm-1, C-O at wavenumber 1200-1250 cm-1. The results of the adsorption test on Rhodamine B dye showed that the activated carbon produced had an optimum absorption capacity of 9.04 mg/g at a concentration of 400 ppm for 90 minutes. Studies show that the adsorption isotherms absorption mechanisms tend to follow the Freundlich equation with a correlation coefficient (R2)= 0.9861.

Penentuan Kondisi Optimum Pembentukan Natrium Silikat (Na2SiO3) Menggunakan Material Dasar Silika Alam dan Natrium Hidroksida (NaOH) Illa Ramadhani; Budhi Oktavia; Ananda Putra; Hary Sanjaya
Jurnal Periodic Jurusan Kimia UNP Vol 10, No 2 (2021): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

The purpose of this research are to investigate the effective synthesis of sodium silicate and knowing the optimum conditions of the sodium silicate from its solubility in water. Synthesis of sodium silicate was carried out by first activating silica using 1M HCl. The activated silica is then added with NaOH. Based on XRF analysis, it was found that the sodium silicate synthesis method is more effective at high temperatures. Determination of the optimum conditions was carried out at various concentrations of NaOH (2M, 3M, 4 M, 5M and 6M). Based on the research that has been done, the optimum conditions for sodium silicate were obtained by adding NaOH with a concentration of 4M.

Degradasi Zat Warna Methyl Orange dengan Katalis ZnO-Co Menggunakan Metode Fotosonolisis Laila Suryani; Hary Sanjaya; Yohandri Yohandri
Jurnal Periodic Jurusan Kimia UNP Vol 10, No 2 (2021): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Degradation of methyl orange was carried out with variations in time of 30, 60, 90, 120, 150, 180, 210, 240 minutes and variations in doped catalyst concentrations of 5%, 10%, 15%, 20%, 25% using the photosonolysis method. The results showed that the maximum degradation time of methyl orange was 210 minutes with a degradation percentage of 76.1216%. The variation in the concentration of catalyst for the degradation of methyl orange obtained a maximum concentration of 5% with a degradation percentage of 20.1045%. The band gap value of 5% ZnO-Co catalyst performed using UV-Vis Diffuse Reflectance Spectroscopy (DRS) was 3.21 eV.

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Budhi Oktavia

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

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Sumatera barat

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Home Page

OAI Link

Editorial Team

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Google Scholar

Contact Name Budhi Oktavia

Contact Email budhioktavia@fmipa.unp.ac.id

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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

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