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JC-T (Journal Cis-Trans) : Jurnal Kimia dan Terapannya
Published by Universitas Negeri Malang
ISSN : 25496565     EISSN : 25496573     DOI : 10.17966
Core Subject : Science,
Biochemistry, Genetics & Molecular Biology
JC-T (Journal Cis-Trans) : jurnal kimia dan terapannya is published by Universitas Negeri Malang, Faculty of Mathematics and Science, Chemistry Department.
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 101 Documents
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Electrochemical Synthesis of Nickel Hydroxide Ni(OH)2 Nanoparticles Solution for Detecting Mercury (Hg) Yanatra Budi Pramana; Djoko Adi Walujo; Marianus Subandowo; Indah Nurhayati; Fauziatul Fajaroh; Krisyanti Budipramana
JC-T (Journal Cis-Trans) : Jurnal Kimia dan Terapannya Vol. 5 No. 2 (2021)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um0260v5i22021p008

Abstract

Nickel hydroxide Ni(OH)2 nanoparticles were used as sensors for mercury (Hg) in water using a UV-Visspectrophotometer instrument. The synthesis of Ni(OH)2 nanoparticles was carried out by electrochemical method using nickel plates as anode and cathode and the process was operated at constant voltage of 25 V for 30 minutes. In this study, 2 variations of the concentration of Ni(OH)2 nanoparticles were used, namely (5 mL and 4 mL) to detect mercury at concentrations of 10 ppm, 40 ppm, and 50 ppm. Changes in the absorbance value of Ni(OH)2 nanoparticles will be observed. From the observations, there was a decrease in the absorbance value of Ni(OH)2 nanoparticles along with the increase in mercury concentration. The decrease in the absorbance value of Ni(OH)2 nanoparticles is directly proportional to the amount of mercury concentration. The detection limit value was obtained at a volume of 5 mL and 4 mL are 45 ppm, and 35 ppm.
Konversi Zink Dari Limbah Baterai Zn-C Menjadi Senyawa Seng Sulfat Agustinus Ngatin; Rony Pasonang Sihombing
JC-T (Journal Cis-Trans) : Jurnal Kimia dan Terapannya Vol. 5 No. 2 (2021)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um0260v5i22021p013

Abstract

Zinc carbon battery consists of zinc (Zn) in which carbon (C) is covered with manganese dioxide (MnO2)and ammonium chloride (NH4Cl) in the form of a paste. The Zn-C battery is a primary battery which willeventuallu be disposed as a waste. Waste Zn-C batteries contain ahazardous waste which is harmful to the environment. To reduce hazardous substance, a conversion of the zinc plate was carried out into a useful zinc sulfate compound. The aim of this study was to determine the amount of sulfuric acid required to convert zinc plates to zinc sulfate and the percent efficiency of yield. The conversion process included pre-treatment, dissolving zinc in various concentration of sulfuric acid (5%, 10%, 15%, 20%, 25%, and 30%) in a volume of 80 mL,stirring at 450 rpm, and heating, filtration, and crystallization. Zinc sulfate heptahydrate crystals were formed at room temperature. Maximum yields were archieved at a 30% sulfuric acid concentration with a 1:1 ratio of zinc to sulfuric acid with a small excess of sulfuric acid. Under these conditions, ZnSO4.7H2O crystals produced was 18.39 grams with an efficiency of 83.71%.
Penentuan Jalur Sintesa Dari Jenis Impuritis Yang Ditemukan Pada Methamfetamin Dengan Metode GC-MS Hendri Dermawan Ginting; Tamrin; Mimpin n Ginting
JC-T (Journal Cis-Trans) : Jurnal Kimia dan Terapannya Vol. 5 No. 2 (2021)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um0260v5i22021p018

Abstract

A study was conducted on determining the synthesis pathway of the type of impurity in methamphetamine in samples obtained from investigators' allowance evidence tested using the GC-MS method. Based on the experience of the author who conducted a qualitative examination of methamphetamine compounds at the Forensic Laboratory of the North Sumatra Regional Police, it was deemed necessary to carry out an impurity examination of evidence, especially on the confiscation of large amounts of evidence so that the route of synthesis, chemicals and precursors used in production could be identified mapping of the circulation of evidence and tracking of the acquisition of chemicals is carried out for further restriction and action for distributors who do not have/abuse their distribution permit. The method used is testing with GC-MS. Based on the GC-MS test, there were 4 impurities obtained, namely n-methyl methamphetamine, n-acetyl methamphetamine, benzaldehyde and benzyl methyl ketone. The compound n-methyl methamphetamine, nacetyl methamphetamine is a compound that will form n-formyl methamphetamine which is a key intermediate and impurity product of the synthesis of methamphetamine by the Leuckart route. In the Leuckart route, benzaldehyde is used as a starting material for the synthesis of benzyl methyl ketone or P2P (Phenyl-2-propanone).
Adsorpsi Zat Warna Remazol Red menggunakan Nanokomposit Silika Aerogel-Karbon Aktif Fania Faradila Yuniarizky; Nazriati
JC-T (Journal Cis-Trans) : Jurnal Kimia dan Terapannya Vol. 5 No. 2 (2021)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um0260v5i22021p025

Abstract

Remazol red is a color substance that can cause environmental pollution, so adsorption methods areused to reduce the concentration of remazol red color substances before being dumped into the water with silica aerogel-activated carbon nanocomposite adsorbent. Silica aerogel-activated carbon nanocompoposite are synthesized using sol-gel methods and drying at ambient pressure with the base material of bagasse ash. The success of synthesis can be reviewed from the results of FT-IR characterization, which then synthesis results are applied to red remazol adsorption by varying pH, contact time, temperature, and concentration, so that its adsorption capacity can be known. Adsorption capacity of remazol red by silica aerogel-activated carbon nanocompoposite was obtained at optimum contact time of 80 minutes, adsorbent mass of 0.01 grams and remazol red concentration of 40 mg/L at pH 2 is 3.9375 mg/g. Adsorption capacity decreases as the pH and temperature increase and increases as the concentration of remazol red. Adsorption of remazol red using silica aerogel-activated carbon nanocompoposite follows the two-order kinetic model and Freundlich isoterm. Adsorption thermodynamics obtained ∆G° = -454,478 J/mol (45°C), ∆H° = -13659,902 J/mol, and ∆S° = -40,662 J/Kmol which indicates that the adsorption process takes place spontaneously, exothermicly.
Aplikasi Ekstrak Eceng Gondok dalam Korosi dengan Pelarut Metanol Rony Pasonang Sihombing; Putri Utami Dita Cahya; Nidaa’ Rihhadatul ‘Aisya Komara; Restu Adji Alif Asyari; Annisa Nurlatifah; Yunus Tonapa Sarungu
JC-T (Journal Cis-Trans) : Jurnal Kimia dan Terapannya Vol. 6 No. 2 (2022)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um0260v6i22022p001

Abstract

Water hyacinth contains antioxidants such as lignin, tannins, saponins, and alkaloids that can bind to metals to form a protective layer as an organic inhibitor in the corrosion proses. The purpose of this study was to determine the content of antioxidants in water hyacinth extract which can reduce the corrosion rate of metals. The maceration process was carried out with a feed: methanol ratio of 1:9 (w/v). The types of antioxidant compounds were tested using the phytochemical method while the antioxidant activity was tested using the FRAP method. Steel corrosion testing uses the coupon method with a corrosion time of 5 days in air, rainwater, and tap water. The yield of the extract was 72.80%. Based on the results of the phytochemical and FRAP tests, the positive extract contained antioxidant compounds, namely alkaloids, tannins and saponins with an antioxidant concentration of 296.55 ppm. Organic inhibitors that showed the highest inhibition efficiency were at a concentration of 75 ppm with a value of 94.52% in tap water media, 65.53% in air media, and 52.96% in rainwater media.
Penentuan Nilai Effisiensi Dye Sensitized Solar Cell dari Pigmen Fotosintesis Mikroalga Laut Tropis Navicula sp galur TAD Eka Rahmat Mahayani Anthonio Putera Lilipaly; Ivonne Telussa; Eirene G. Fransina; Alfa Musa Imanuel Efruan
JC-T (Journal Cis-Trans) : Jurnal Kimia dan Terapannya Vol. 6 No. 2 (2022)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um0260v6i22022p005

Abstract

Solar cells using dyes as sensitizers continue to expand. The synthetic dye used as a sensitizing material for solar cells has high production costs, difficult to find, and can cause environmental pollution. Photosynthetic pigments as sensitizers are considered to be the solution to this matter. In this research, we investigated the effect of photosynthetic pigments from the Navicula sp. TAD as a dye-sensitized material on the efficiency of dyesensitized solar cell. To obtain high biomass, the Navicula sp. TAD was cultivated in a modified medium. Navicula sp. TAD has photosynthetic pigments consisting of chlorophyll and carotenoid. Solar cells using a crude pigment extract with a concentration of 300 ppm absorbed by TiO2 as an electrode have efficiency values of 4.475×10-4%.
Pengolahan Air Limbah Industri Tekstil dengan Metoda Elektrokoagulasi Menggunakan Elektroda Besi (Fe) dan Aluminum (Al) Rony Pasonang Sihombing; Yunus Tonapa Sarungu
JC-T (Journal Cis-Trans) : Jurnal Kimia dan Terapannya Vol. 6 No. 2 (2022)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um0260v6i22022p011

Abstract

Textile industry wastewater contains organic and inorganic pollutants which could be indicated byrelatively high levels of COD, BOD5, turbidity. If this waste water was directly discharged into the environment, it would pollute the environment and endanger human health and other living things. Textile industry wastewater treatment with electrocoagulation method aimed to replace or save chemicals as coagulants and flocculants that could cause environmental pollution and the price continues to increase. Wastewater treatment with this method could produce wastewater or treatment effluent with levels of COD, turbidity, heavy metals, pH below or at least equal to the environmental quality standard (BML) Research results on textile wastewater treatment using Fe and Al and SS (Stainless) electrodes Steel) at a current density of 0.25 to 1.25 A/dm2 with a processing time of 35 minutes obtained COD levels with a process efficiency greater than 80% and turbidity levels with greater efficiency 90%. 
Limbah Kulit Buah Sawo Manila (Manilkara zapota) sebagai Anti Kandidiasis Lina Oktavia Rahayu; Selly Oktarina
JC-T (Journal Cis-Trans) : Jurnal Kimia dan Terapannya Vol. 6 No. 2 (2022)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um0260v6i22022p019

Abstract

Diabetes mellitus can trigger infections, one of which is candidiasis caused by Candida albicans.Candidiasis treatment with antibiotics can cause resistance, so it is necessary to use alternative naturalingredients that function as antifungals, one of which is manila sapodilla (Manilkara zapota). The peel ofthe manila sapodilla fruit has not been widely used, so it is necessary to utilize the waste of the manilasapodilla fruit peel. The aim of the study was to determine the antifungal activity of the extract of the manila sapodilla fruit peel against Candida albicans. Extracts were made using maceration method with 70% ethanol as solvent. Manila sapodilla peel extract was screened for phytochemical compounds of secondary metabolites, and antifungal activity was tested by well diffusion method. Manila sapodilla fruit peel extract contains flavonoids, alkaloids, and tannins. Antifungal testing of the peel of the sapodilla manila fruit at extract concentrations of 30%, 40%, 50% and 60% respectively resulted in an average inhibition zone diameter of 3.827 ± 0.947 mm; 5.460 ± 0.337 mm; 6.673 ± 0.351 mm; 8.053 ± 0.720 mm. Manila sapodilla fruit peel extract has antifungal activity against Candida albicans.
Pengaruh Jenis Elektrolit Proses Anodisasi Aluminium Terhadap Efisiensi Proses Dan Sifat Mekanik (Kekerasan) Permukaan Dan Ketebalan Lapisan Oksida Rony Pasonang Sihombing; Agustinus Ngatin; Salsabila Nisrina Junaedi; Wina Maulida; Emma Hermawati Muhari; Alfiana Adhitasari; Yusmardhany Yusuf
JC-T (Journal Cis-Trans) : Jurnal Kimia dan Terapannya Vol. 6 No. 2 (2022)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um0260v6i22022p024

Abstract

Aluminum is a metal for equipment materials in industry because it has superior properties such as being strong, light, and easy to shape, but is easily deformed and has low hardness and wear resistance. To improve the physical and mechanical properties of aluminum can be done through the anodising process. The purpose of this study was to determine the effect of the type of electrolyte on the anodising process on the efficiency of the process and product thickness of the oxide layer and the mechanical properties (hardness) of the aluminum surface. The aluminum anodissing process was carried out in various types of electrolytes (sulfuric acid, phosphoric acid, oxalic acid, chromic acid,) with a concentration of 15%. The anodising process temperature was kept constant at 25 ⁰C with a processing time of 20 minutes, and a voltage of 18 v. The results showed that the anodising process in sulfuric acid solution had the highest efficiency of 51.98% than the other three electrolytes, and produced the highest oxide layer thickness of 13.88 m and aluminum surface hardness of 287.9 HV, in phosphoric acid solution. 
Penetapan Kadar Cd2+dan Pb2+pada Ikan Mujair (Oreochromis mossambicus)dengan Metode AAS (Atomic Absorption Spectrophotometry) Khusna Santika Rahmasari; Arista Safitri; Achmad Vandian Nur; Wirasti Wirasti
JC-T (Journal Cis-Trans) : Jurnal Kimia dan Terapannya Vol. 7 No. 2 (2023)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um0260v7i22023p001

Abstract

Mujair fish (Oreochromis mossambicus) belongs to fish that are resistant to environmental conditionsand are easy to find. which if exposed to heavy metals and consumed in the long term will cause neurotoxic, carcinogenic, mutagenic, or teratogenic effects even to death. Cd2+ and Pb2+ are harmful heavy metals that are toxic and can pollute aquatic organisms. This study aims to determine the levels of Cd2+ and Pb2+ in mujair fish in ponds in Pekalongan City. Samples came from Jeruksari, Panjang, and Slamaran ponds. Analysis of heavy metal content using the AAS (Atomic Absorption Spectrophotometry) method. The results showed that mujair fish in Jeruksari, Panjang, and Slamaran ponds had Cd2+ levels 0,07; 17,38 and 0,02 mg/Kg, as well as Pb2+ levels of 10,26; 6,08 and 8,62 mg/Kg. Cd2+ levels in Panjang ponds exceeded the threshold set by BPOM which was 0,1 mg/Kg, while Pb2+ levels in the three ponds exceeded the threshold set by BPOM, namely 0,2 mg/Kg.

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