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[Studi Co-Precipitation Tembaga (II) Menggunakan Coprecipitant Al(OH)3 pada Sungai Batang Arau Kota Padang Diukur dengan Metoda Spektrofotometri Serapan Atom (SSA) ]]>
<![CDATA[Yusuf .]]>;
<![CDATA[Indang Dewata]]>;
<![CDATA[Edi Nasra]]>
<![CDATA[ Jurnal Periodic Jurusan Kimia UNP Vol 2, No 1 (2013) ]]>
Publisher : <![CDATA[Departemen Kimia FMIPA UNP ]]>
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DOI: 10.24036/p.v2i1.1930
<![CDATA[A study in the development co-precipitation method and natural samples was applied to the Batang Arau River in Padang City. Sampling was done once in the month of November 2012, by random sampling on the selected point along the river which was considered to represent the river. Sampling points taken in the river upstream Lubuk Paraku Kor were named sample 1, the sampling points in the middle of the river called hilalang padang besi were called as sample 2, the third sampling points downstream to the mouth of the river were called the sample stream 3. The analysis was performed with the optimization of pH and volume optimization before it was applied to the sample. The result was the determination of the optimum pH conditions co-precipitant Al(OH)3 with atomic absorption spectroscopy air acetylene flame occurred at pH 6, the optimum volume coprecipitant used in the co-precipitation method was the addition of Al(OH)3 as much as 11 mL. Content of Copper (II) obtained at the optimum conditions at upstream was 2,22ppm, in the middle of the river was 1,294 ppm and 1,2 ppm was the content at the river mouth, with an average concentration factor of 104 times compared to direct measurement without the co-precipitation. Quality Standards based on PP. 82 Year 2001 Class II was still in the limited threshold 0,02 ppm.]]>
<![CDATA[Optimasi Tanah Napa sebagai Adsorben Ion Logam Kromium (IV) ]]>
<![CDATA[Mawardi Anwar]]>;
<![CDATA[Rahmi Khairun Nisa]]>
<![CDATA[ Jurnal Periodic Jurusan Kimia UNP Vol 2, No 1 (2013) ]]>
Publisher : <![CDATA[Departemen Kimia FMIPA UNP ]]>
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DOI: 10.24036/p.v2i1.1935
<![CDATA[A study concerning the determination of the optimum conditions for the adsorption of chromium (VI) by tanah napa adsorbent from Aripan, Solok. Tanah napa containing high silica and alumina are 63.20% and 16.55%, levels of silica and alumina in the tanah napa almost the same levels with natural zeolite, which can be used as adsorbent. In this research studied the influence of various parameters that affect the capacity of tanah napa uptake to Cr(VI), the pH of the solution, the initial concentration of solution, adsorbent particle size, heating temperature adsorbent and eluent flow rate. The results of this study indicate that the optimum pH is 4, the optimum initial concentration of 250 mg/L, while the particle size and adsorbent optimum heating temperature is 850 mm and 125°C, and the optimum flow rate is 20 drops/min. Using the Langmuir adsorption isotherm equation obtained maximum absorption capacity of the tanah napa to Cr(VI) that is equal to 0.911 mg/g.]]>
<![CDATA[Penggunaan HCl Sebagai Leaching Agent Dan Pengaruh Penambahan H2O2 Pada Desulfurisasi Green Coke ]]>
<![CDATA[Mawardi Anwar]]>;
<![CDATA[Zul Afkar]]>;
<![CDATA[Dekna Aswita]]>
<![CDATA[ Jurnal Periodic Jurusan Kimia UNP Vol 2, No 1 (2013) ]]>
Publisher : <![CDATA[Departemen Kimia FMIPA UNP ]]>
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DOI: 10.24036/p.v2i1.1926
<![CDATA[Desulfurization research on green coke of Refinery Unit II Dumai production with 0.44% sulfur content has been done. The purpose of this research is to study the performance of leaching method on green coke desulfurization and find out the effect of HCl concentration, stirring time and the effect of the addition of H2O2 to the green coke desulfurization. In this study obtained the optimum concentration of HCl as the leaching agent is 9 M. The results showed that the stirring time of 60 minutes and 9 M HCl concentration, levels of sulfur that can be separated is 3.58%. Then conducted leaching at the optimum conditions with the addition of 6% H2O2. Levels of sulfur that can be separated by the addition of H2O2 is 3.68%. In this research, the addition of H2O2 increased percent of desulfurization.]]>
<![CDATA[Pengaruh Ion Logam Cd (II) Terhadap Adsorpsi Ion Logam Pb (II) dengan Adsorben Tanah Napa ]]>
<![CDATA[Mawardi Anwar]]>;
<![CDATA[Hary Sanjaya]]>;
<![CDATA[Azhar Maliki]]>
<![CDATA[ Jurnal Periodic Jurusan Kimia UNP Vol 2, No 1 (2013) ]]>
Publisher : <![CDATA[Departemen Kimia FMIPA UNP ]]>
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DOI: 10.24036/p.v2i1.1931
<![CDATA[Research has been done about influence of the presence of metal ions Cd (II) on the adsorption of metal ions Pb (II) by using adsorbents napa land from areas Aripan, South Solok. Napa soil contains 63.20% of silica and alumina 16:55%, it was lmost same as the content of silica and alumina in zeolite nature so that it can be used as an adsorbent. In this research studied the influence of presence of metal ions Cd (II) metal ions on the absorption of Pb (II) with some parameters, such as the initial concentration of the solution, the addition of metal ions Cd (II), pH and temperature of heating the adsorbent. Then also studied the regeneration of both metals by using a solution of 1% HNO3. These results indicate that the presence of metal ions Cd (II) decrease the absorption of the metal ions Pb (II). The optimum concentration of metal ion uptake of Pb (II) was 150 mg / L, the optimum concentration of the addition of metal ions Cd (II) is ½ times of concentration of metal ions Pb (II). The optimum pH for metal ions Pb (II) was 5 and 6 for the metal ions Cd (II). While the optimum adsorbent heating temperature is 125 ° C, and the percentage of regenerating metal ions Pb (II) was 64 326% and Cd (II) was 38 675%.]]>
<![CDATA[Penentuan Kadar Etanol Pada Sampel Minuman dengan Metoda HPLC Menggunakan Fasa Gerak Asetonitril dan Buffer Fosfat ]]>
<![CDATA[Nailul Rahmi]]>;
<![CDATA[Budhi Oktavia]]>;
<![CDATA[Nazulis Z]]>
<![CDATA[ Jurnal Periodic Jurusan Kimia UNP Vol 2, No 1 (2013) ]]>
Publisher : <![CDATA[Departemen Kimia FMIPA UNP ]]>
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DOI: 10.24036/p.v2i1.2373
<![CDATA[Alcoholic beverage is a drink containing ethanol. Ethanol is a psychoactive substance and its consumption causes loss of consciousness. All types of alcohol are essentially toxic, especially if consumed in excess, such as ethanol. According to BPOM limit of the use of alcohol in drinks are ± 1% - 5%. Ethanol content analysis in this study using HPLC method with condition UV-Vis using a mobile phase of acetonitrile: phosphate buffer (5: 95) pH 6 at 220nm wavelength detector and the use of stationary phase Zorbax Rx C18 ODS column. The result of this method is retention time for ethanol 1.68 minutes. The aplication of the method for determination of ethanol on the drinks from the market for 5 different samples was tested. The sample consists of 3 types of alcoholic beverage production factory/industrial, and 2 types of alcoholic beverages produced household. With adition standard techniques on samples was obtained ethanol adduct levels in 2 samples are 20.416% and 3.80%]]>
<![CDATA[Penggunaan NaOH Sebagai Leaching Agent Dan Pengaruh Penambahan H2O2 Pada Desulfurisasi Petroleum Coke ]]>
<![CDATA[Mawardi Anwar]]>;
<![CDATA[Amrin .]]>;
<![CDATA[Eliza Fitri]]>
<![CDATA[ Jurnal Periodic Jurusan Kimia UNP Vol 2, No 1 (2013) ]]>
Publisher : <![CDATA[Departemen Kimia FMIPA UNP ]]>
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DOI: 10.24036/p.v2i1.1927
<![CDATA[A study on the use of NaOH as the leaching agent and the effect of adding H2O2 in desulfurization of petroleum coke. This study aimed to observe the effect of concentration and stirring time on the desulfurization of petroleum coke using NaOH as the leaching agent, and determine the effectiveness of the use of NaOH as a leaching agent in optimum condition in the desulfurization of petroleum coke and see the effect of the addition of H2O2 by leaching method using NaOH. Research on separation of sulfur petroleum coke leaching method performed on samples derived from petroleum coke PT.Pertamina UP II Dumai 0440% sulfur content. To determine the sulfur content in petroleum coke after leaching were analyzed using X-Ray Flouroscence (XRF). In this separation studied the influence of the concentration of NaOH as the leaching agent and the effect of stirring time on levels of sulfur that can be separated. The results showed that the concentrations of NaOH and optimum stirring time, which can be separated sulfur content is 26%. This research also studied the effect of adding H2O2 at the optimum conditions. The results showed 1.5% H2O2 concentration can separate the sulfur in petroleum coke amounted to 1.82%. From the research it can be concluded that the influence of the concentration and time of agitation increases levels of sulfur extracted until a certain optimum value of 75% and 60 min, while the addition of high concentrations of H2O2 less effective. The addition of 1.5% H2O2 can significantly reduce levels of sulfur are extracted at the 90% confidence level.]]>
<![CDATA[Efektifitas Al(OH)3 Sebagai Copresipitant Pada Penentuan Logam Kadmium Dalam Air Sungai Batang Arau Menggunakan Spektrometer Serapan Atom ]]>
<![CDATA[Melida Selvita]]>;
<![CDATA[Zul Afkar]]>;
<![CDATA[Edi Nasra]]>
<![CDATA[ Jurnal Periodic Jurusan Kimia UNP Vol 2, No 1 (2013) ]]>
Publisher : <![CDATA[Departemen Kimia FMIPA UNP ]]>
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DOI: 10.24036/p.v2i1.1932
<![CDATA[Telah dilakukan penelitian tentang efektifitas Al(OH)3 sebagai coprecipitant pada penentuan kadar logam kadmium dalam air sungai Batang Arau menggunakan Spektrofotometri Serapan Atom (SSA). Penelitian dilakukan dua tahap, pertama penentuan kondisi optimum dan kedua aplikasi kondisi optimum pada sampel air sungai. Kondisi optimum coprecipitant yang didapat setelah pengukuran dengan SSA yaitu pada pH 7 dan volume Al3+ 0,2 M 11 mL. Kandungan kadmium dalam sampel air sungai Batang Arau dengan kopresipitasi pada bagian hulu 0,3385 mg/L, tengah 0,34625 mg/L dan hilir 0,3575 mg/L, sedangkan tanpa kopresipitasi -0,039 mg/L, -0,028 mg/L, -0,049 mg/L. Hasil ini menunjukkan bahwa coprecipitant Al(OH)3 dapat digunakan untuk mendeteksi trace metal dalam suatu sampel.]]>
<![CDATA[Pengaruh Equilibrium Kandungan Air Batubara Halus Terhadap Nilai Kalor Bakar Batubara Halus (Fine Coal) ]]>
<![CDATA[Mawardi Anwar]]>;
<![CDATA[Hary Sanjaya]]>;
<![CDATA[Meyci Trisna]]>
<![CDATA[ Jurnal Periodic Jurusan Kimia UNP Vol 2, No 1 (2013) ]]>
Publisher : <![CDATA[Departemen Kimia FMIPA UNP ]]>
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DOI: 10.24036/p.v2i1.1928
<![CDATA[The increasing of requirement of domestic cement for a number of years will affect directly to usage of coal as especial fuel for cement production. So that Important to know the usage condition of coal yielding coal with superordinate calorivic value, with better economic value, and smaller negative impact to environment, where with slimmer usage amount of coal better yield coal with higher calorivic value because more and more amount of used coal also will improve the waste that able to influence environment. Have been researched water equilibrium of fine coal with aim to lessen the amount of fine coal usage for cement production process, because from data result of research got calorivic value which mounting of fine coal after done equilibrium of water content in fine coal. Fine coal sample before and after obstetrical equilibrium of its water is determined change of that calorivic value (Cal/g) use Bomb Calorimeter PARR 1261, content of water (%) use Moisture Analyzer, content of sulphur (%), and its dusty content. Result of which is got that after water equilibrium happened minimizing the mass of fine coal’s sample, after done the determination of water content happened minimizing of water content that is equal to 3.14% or happened minimizing that equal to 17% from water content before equilibrium. While for the calorivic value increase until 189 Cal/g or happened increase equal to 3% from calorivic value of sample before equilibrium, for sulphur and dusty content happened increase successively equal to 7% and 5% from content of sample before equilibrium.]]>
<![CDATA[Uji Daya Hambat Asap Cair Sabut Pinang terhadap Pertumbuhan Bakteri Bacillus cereus dan Pseudomonas aeruginosa ]]>
<![CDATA[Iryani .]]>;
<![CDATA[Suryelita .]]>;
<![CDATA[Dwi Kurnia Putri]]>
<![CDATA[ Jurnal Periodic Jurusan Kimia UNP Vol 2, No 1 (2013) ]]>
Publisher : <![CDATA[Departemen Kimia FMIPA UNP ]]>
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DOI: 10.24036/p.v2i1.1933
<![CDATA[This research was to study about influence of increasing consentrations of areca catechu’s liquid smoke for inhibit phatogenic and food spoilage bacteria activities by using paper disc method. Variation concentration of areca catechu’s liquid smoke was use 10, 15, 20, 25, 35, 50, 75 and 100%(v/v) to inhibit Bacillus cereus and Pseudomonas aeruginosa. Result of this research showed maximum inhibition of areca catechu’s liquid smoke is at 100% concentration with inhibit diameter 18,3mm for Bacillus cereus and 16 mm for Pseudomonas aeruginosa. GC-MS identified important components in areca catechu’s liquid smoke as bacteria activities inhibitor are phenol derivate and acetic acid.]]>
<![CDATA[Penyerapan Logam Krom dalam Limbah Cair Laboratorium Kimia Menggunakan Adsorben Tanah Napa ]]>
<![CDATA[Mawardi Anwar]]>;
<![CDATA[Hary Sanjaya]]>;
<![CDATA[Victoria Frisiananda]]>
<![CDATA[ Jurnal Periodic Jurusan Kimia UNP Vol 2, No 1 (2013) ]]>
Publisher : <![CDATA[Departemen Kimia FMIPA UNP ]]>
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DOI: 10.24036/p.v2i1.1929
<![CDATA[It has been investigated the adsorbtion of chrom metal in chemistry laboratory liquid waste using tanah napa as an adsorbent. Waste containing chrom metal was pass through a coloum that filled with tanah napa adsorbent. It is studied the use of nitrit acid (HNO3) for regeneration purpose and recovery of chrom metal at various concentration. The result showed that HNO3 at concentration 0.4M was the best for regeneration of Chrom(III) is 78.03% and concentration 0.3M for regeneration of Chrom(VI) is 53.02%. The optimum condition of this method were applied to preconcentration of Chrom in chemistry laboratory liquid waste with HNO3 0.3M. The result show that Chrom found in chemistry laboratory liquid waste which is initially 0.9123 ppm can be preconcentration to 1.7760 ppm with 5x10mL preconcentration.]]>
