Jurnal Periodic Jurusan Kimia UNP
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.
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<![CDATA[Pengaruh Waktu Kneading Terhadap Efektifitas Enkapsulasi Molekul Minyak Esensial Daun Ruku-Ruku (Ocinum tenuiflorum) pada β- Siklodektrin (β-CD) ]]>
<![CDATA[Elfanny Delvia]]>;
<![CDATA[Sri Benti Etika]]>;
<![CDATA[Hesty Parbuntari]]>
<![CDATA[ Jurnal Periodic Jurusan Kimia UNP Vol 10, No 1 (2021): PERIODIC ]]>
Publisher : <![CDATA[Departemen Kimia FMIPA UNP ]]>
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DOI: 10.24036/p.v10i1.109607
<![CDATA[The leaves of ruku-ruku (Ocinum Tenuiflorum contain secondary metabolites in the form of essential oils which can be used as medicinal compounds. Ruku- ruku essential oil (Ocinum Tenuiflorum) is useful as an aromatheraphy, cosmetic ingredient, antibacterial, anti-inflammatory and as an anticancer, however essential oils are unstable, susceptible to high temperatures, and easily oxidized. For that we need encapsulation with a coating material that can provide a solution to these problems. β-siklodekstrin is a good coating for essential oil encapsulation. Research has been conducted to prevent the disruption of inclusion complexes with vrying stirring time. FT-IR analysis showed that there was a shift in wavelength between the parent molecule β-siklodekstrin and the inclusion complex, namely an increase in the inclusion complex resulting in a widening of the absorbance band. The stability of the inclusion complexes formed can be seen from the melting point of the inclusion complex which is almost close to the melting of β-siklodekstrin cyclodextrin (> 290ºC), the melting point of the inclusion complex with variations in the stirring time of 15 minutes, 30 minutes, and 45 minutes respectively 287ºC, 280ºC, dan s278ºC. This high melting points indicates a stable inclusion complex that does not break down easily.]]>
<![CDATA[Analisis XRD dan Leaching Out dari Solidifikasi/Stabilisasi Ion Logam Cr(VI) Menggunakan Semen ]]>
<![CDATA[Shinta Bella]]>;
<![CDATA[Jon Efendi]]>
<![CDATA[ Jurnal Periodic Jurusan Kimia UNP Vol 10, No 1 (2021): PERIODIC ]]>
Publisher : <![CDATA[Departemen Kimia FMIPA UNP ]]>
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DOI: 10.24036/p.v10i1.109577
<![CDATA[Cr (VI) metal waste becomes one of the heavy metal wastes which is very difficult to overcome. For this reason, the Cr (VI) waste processor uses a stabilization / solidification method to reduce the concentration of Cr (VI) metal ions in the environment by using cement as a binder. The testing setting time for cement is that by increasing the Cr (VI) concentration, the longer it takes for the cement hardening process. This is in line with the results of the compressive strength test, where the results for concentrations of 0.5%, 2%, and 5% were 32, 26, and 23 MPa, respectively. whereas according to the US EPA, the minimum compressive strength test is 0.3 MPa. TCLP test for 96 hours for this method is that the higher the concentration, the higher the Cr (VI) leaching in cement.]]>
<![CDATA[Sintesis Silika Mesopori Menggunakan Bahan Dasar Na2SiO3 yang Dihasilkan dari Pasir Silika dengan Metoda Sol-Gel ]]>
<![CDATA[Armelia Ananda]]>;
<![CDATA[Syamsi Aini]]>
<![CDATA[ Jurnal Periodic Jurusan Kimia UNP Vol 10, No 1 (2021): PERIODIC ]]>
Publisher : <![CDATA[Departemen Kimia FMIPA UNP ]]>
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DOI: 10.24036/p.v10i1.110482
<![CDATA[The synthesis of natural silica-based mesoporous silica is continuously being carried out, especially to obtain silica with high crystallinity and larger pores from high water absorption. In this study, the synthesis of mesoporous silica using the sol-gel method by adding hexane and varying the mass addition of Pluronic 104 surfactant (2 g, 4 g, 6 g). The synthesized silica was characterized using XRD.. The results of measurements using XRD showed that the diffraction pattern appeared as the relevant peak for the three products with standard mesopore silica diffraction patterns, namely wide and low peaks at 2ϴ 22.7; 21.8; 22.1 for the products SM02, SM04 and SM06 respectively. Meanwhile, the highest intensity / crystallinity given by the SM06 sample.]]>
<![CDATA[Pengaruh Massa Surfaktan P104 terhadap Kristalinitas dan Ukuran Kristal Silika Mesopori ]]>
<![CDATA[Ahdiatun Nuri]]>;
<![CDATA[Syamsi Aini]]>
<![CDATA[ Jurnal Periodic Jurusan Kimia UNP Vol 10, No 1 (2021): PERIODIC ]]>
Publisher : <![CDATA[Departemen Kimia FMIPA UNP ]]>
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DOI: 10.24036/p.v10i1.110481
<![CDATA[Mesoporous silica is a silka solid that has a pore size between 2-50 nm and can be used in various fields such as a catalyst, drug diluents, sensors, adsorption, stationary phase for chromatography and others. Mesoporous silica was synthesized using the precursor natrum silicate (Na2SiO3) from silica sand because it is more economical and easy to obtain. This study aims to determine the effect of Pluronic 104 (1g; 1.5g; and 2g) surfactant on particle size and crystallinity of mesoporous silica with Na2SiO3 as a base material synthesized from silica sand. Mesoporous silica was synthesized using the sol-gel method because it can be done at low temperature, then followed by calcination at 550 °C for 5 hours to remove the template. The synthesized Mesoporous silica was characterized using high angle X-Ray Diffraction (XRD) 2θ = 10°-80°. The results of XRD data measurements showed a diffraction pattern that appeared as wide and low peaks at 2θ = 22°; 21.9°; 22.7° for products SM01, SM02 and SM03 respectively indicate that the synthesized silica is amorphous. Mesoporous silica with the highest intensity and crystallinity was obtained in the SM03 sample with the addition of 2 grams of P104.]]>
<![CDATA[Penentuan Limbah Mikroplastik Polyethylene Terephthalate (PET) dengan Metoda Glikolisis dalam Air Laut di Kota Padang ]]>
<![CDATA[Kasma Warni]]>;
<![CDATA[Indang Dewata]]>
<![CDATA[ Jurnal Periodic Jurusan Kimia UNP Vol 10, No 1 (2021): PERIODIC ]]>
Publisher : <![CDATA[Departemen Kimia FMIPA UNP ]]>
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DOI: 10.24036/p.v10i1.109582
<![CDATA[Polyethylene Terephthalate (PET) is a type of plastic waste commonly found in the sea especially disposable soft drink bottles. PET plastic waste can decompose into harmful microplastics if swallowed by marine life. This study aims to determine the microplastic content of PET type in seawater in the city of Padang by glycolysis method using ethylene glycol (EG) solvent with a sodium carbonate as catalyst (Na2CO3) for depolymerization of PET to be a monomer of bis (2-hydroxyethyl terephthalate) (BHET). Glycolysis is carried out for 1 hour at 1960C. In this study, the variation of sodium carbonate (Na2CO3) catalyst mass used are 0.02 gram, 0.04 gram, 0.06 gram, 0.08 gram, and 0.1 gram) and variation of ratio PET bottles: ethylene glycol (gram: mL) are 10 : 20, 10:30, 10:40 and 10:50. The result obtained is 72.22% BHET product under optimum condition with amount of EG of 30 mL and Na2CO3 catalyst mass of 0.06 grams. The BHET was identified using FTIR to confirm the OH-, C-O, and C = O groups. Seawater samples are taken from three locations namely Padang beach, Tabing beach and Gajah Padang beac. The result shows absence of PET type microplastic in these samples.]]>
<![CDATA[Pembuatan Karbon Aktif Secara Kimia Hijau Dari Limbah Cangkang Kelapa Sawit (Elaeis guineensis) Dengan Aktivator Microwave ]]>
<![CDATA[Muhammad Taufik]]>;
<![CDATA[Tirta Suci Dian Kasih]]>;
<![CDATA[Miftahul Khair]]>
<![CDATA[ Jurnal Periodic Jurusan Kimia UNP Vol 10, No 1 (2021): PERIODIC ]]>
Publisher : <![CDATA[Departemen Kimia FMIPA UNP ]]>
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DOI: 10.24036/p.v10i1.110580
<![CDATA[Activated carbon from palm kernel shell has been prepared by using microwave assisted activation. Carbonization was conducted at mild condition of 400ºC for 90 minutes heating time. Microwave irradiation 300 Watt for 2 minutes with frequency 2.45 GHz increase s the carbon iodine number from 452.4021 mg / g up to 829.4040 which is higher than SNI 06-3730-1995 requirement of 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 , C - O at wave numbers of 1000-1260 cm -1 and C - H 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 8 0 mg / L. Adsorption isotherms study conducted by the Langmuir equation produces a regression coefficient R 2 = 0.8903 with a maximum of adsorption capacity of 13.3868 mg / g.]]>
<![CDATA[Sintesis dan Karakterisasi Magnetik Nanopartikel NiFe2O4 Menggunakan Ekstrak Kulit Buah Naga (Hylocereus Polyrhizus) ]]>
<![CDATA[Srifu Rahmawita]]>;
<![CDATA[Alizar Ulianas]]>
<![CDATA[ Jurnal Periodic Jurusan Kimia UNP Vol 10, No 1 (2021): PERIODIC ]]>
Publisher : <![CDATA[Departemen Kimia FMIPA UNP ]]>
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DOI: 10.24036/p.v10i1.110446
<![CDATA[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.]]>
<![CDATA[Pembuatan Karbon Aktif Secara Kimia Hijau dari Tandan Sawit dengan Aktivasi Ultrasonik ]]>
<![CDATA[Fatwa Insyirah]]>;
<![CDATA[Miftahul Khair]]>
<![CDATA[ Jurnal Periodic Jurusan Kimia UNP Vol 10, No 1 (2021): PERIODIC ]]>
Publisher : <![CDATA[Departemen Kimia FMIPA UNP ]]>
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DOI: 10.24036/p.v10i1.110612
<![CDATA[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.]]>
<![CDATA[Penguraian Zat Warna Metilen Biru Menggunakan Katalis Fe3O4-Fe2O3 Dalam Silika Mesopori ]]>
<![CDATA[Winda Selfira]]>;
<![CDATA[Syamsi Aini]]>
<![CDATA[ Jurnal Periodic Jurusan Kimia UNP Vol 10, No 1 (2021): PERIODIC ]]>
Publisher : <![CDATA[Departemen Kimia FMIPA UNP ]]>
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DOI: 10.24036/p.v10i1.109591
<![CDATA[Dyestuff waste from the textile industry process which is disposed of directly into the environment will cause problems because it is toxic and carcinogenic. Methylene blue is one of the azo dyes that is often used as a textile dye. One way to decompose dyes is to use a catalyst Fe3O4-Fe2O3@SiO2 which is synthesized using natural raw materials from iron sand and silica sand and is assisted by H2O2 oxidizer through the fenton method with the formation of OH for the decomposition process of methylene blue. Decomposition of methylene blue has been carried out using the fenton method using Fe3O4-Fe2O3@SiO2 as a catalyst and H2O2 as an oxidizing agent. The experimental parameters were the optimum time, the optimum amount of catalyst and the reusability test of the Fe3O4-Fe2O3@SiO2 catalyst in decomposing methylene blue. The optimum conditions for decomposition of the methylene blue dye using Fe3O4-Fe2O3@SiO2 were 60 minutes and the amount of catalyst was 100 mg. At the optimum condition, the percentage of degradation is > 98%. For testing the reusability of the Fe3O4-Fe2O3@SiO2 catalyst can be used 2x to decompose methylene blue. In the second use, the percentage of degradation is 83%, this is because Fe3O4 has changed to Fe2O3 so that the degradation result decreases.]]>
<![CDATA[Optimasi Kecepatan Pengadukan dan Waktu Kontak Zat Warna Metanil Yellow terhadap C-SinamalKaliks [4] Resorsinarena (CSKR) ]]>
<![CDATA[Aminullah Mimi Darwati]]>;
<![CDATA[Sri Benti Etika]]>;
<![CDATA[Fitri Amelia]]>
<![CDATA[ Jurnal Periodic Jurusan Kimia UNP Vol 10, No 1 (2021): PERIODIC ]]>
Publisher : <![CDATA[Departemen Kimia FMIPA UNP ]]>
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DOI: 10.24036/p.v10i1.109600
<![CDATA[Abstract — Uncontrolled handling of industrial waste disposal systems causes pollution to the environment by hazardous materials such as dyes. Activities that cause the excessive discharge of dyes come from the textile, paper, pigment and paint industries. This industrial activity releases dyestuffs that enter through the food chain so that it has a bad impact on human health. One of the alternative methods used in tackling dye waste pollution is adsorption. Organic compounds that have great potential to be used as adsorbents to absorb dyes are C-Sinamalkaliks [4] Resorsinarene (CSKR). This study uses CSKR to absorb dye which aims to determine the potential of C-SinamalKaliks [4] Resorsinarene (CSKR) which is an adsorbent for the absorption of the dye methanyl yellow. This research was conducted using a batch method with various treatments of stirring speed and contact time. The results showed that the optimum absorption of metanyl yellow against CSKR was at the contact time of 150 minutes and the stirring speed of 100 rpm with an absorption capacity of 2.13 mg/g.]]>
