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INDONESIA
Jurnal Kimia Riset
Published by Universitas Airlangga
ISSN : -     EISSN : -     DOI : -
Core Subject : Science,
Chemistry
Arjuna Subject : -
Articles 150 Documents
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SUHU DAN WAKTU HIDROTERMAL DALAM SINTESIS ZSM-5 DARI METAKAOLIN Hartati Hartati; Alfa Akustia Widati; Aning Purwaningsih; Alfinda Novi Kristanti; Anik Fathur Rohmah
Jurnal Kimia Riset Vol. 3 No. 1 (2018): Juni
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (725.931 KB) | DOI: 10.20473/jkr.v3i1.7800

Abstract

AbstrakSintesis ZSM-5 dilakukan dari metakaolin terdealuminasi tanpa penambahan templat organik. Sintesis dilakukan melalui pengaturan suhu hidrotermal mulai suhu 120oC, 150o, dan 170oC. Hasil sintesis dikarakterisasi dengan difraktometer sinar-X , spektrometer FTIR, dan adsorpsi/desorpsi nitrogen. Pengaturan suhu hidrotermal pada 120oC selama 24 jam belum menghasilkan ZSM-5, sedangkan sintesis pada suhu 150oC selama 24 jam diperoleh hasil ZSM-5 dengan kristal yang cukup baik. Hidrotermal pada 170o tetap dapat membentuk ZSM-5 dengan pengotor mordenit dan kurang kristalin dibandingkan sintesis pada 150oC. Kata kunci: AbstrakSintesis ZSM-5 dilakukan dari metakaolin terdealuminasi tanpa penambahan templat organik. Sintesis dilakukan melalui pengaturan suhu hidrotermal mulai suhu 120oC, 150o, dan 170oC. Hasil sintesis dikarakterisasi dengan difraktometer sinar-X , spektrometer FTIR, dan adsorpsi/desorpsi nitrogen. Pengaturan suhu hidrotermal pada 120oC selama 24 jam belum menghasilkan ZSM-5, sedangkan sintesis pada suhu 150oC selama 24 jam diperoleh hasil ZSM-5 dengan kristal yang cukup baik. Hidrotermal pada 170o tetap dapat membentuk ZSM-5 dengan pengotor mordenit dan kurang kristalin dibandingkan sintesis pada 150oC. Kata kunci: ZSM-5, metakaolin, terdealuminasi, tanpa templat, pengaturan suhu dan waktu Abstract             Synthesis of ZSM-5 is carried out from dealuminated metakaolin without the addition of organic template. The synthesis is done by setting the hydrothermal temperature from 120oC, 150oC, and 170oC. The results were characterized by an X-ray diffractometer, FTIR spectrometer, and nitrogen adsorption / desorption. Hydrothermal temperature setting at 120oC for 24 hours has not produced ZSM-5, while the synthesis at 150oC for 24 hours was obtained ZSM-5 with good crystals. Hydrothermal at 170 °C can still form ZSM-5 with mordenite impurities and less crystalline than synthesis at 150 °C. Keywords: ZSM-5, dealuminated metakaolin, without organic  templates, temperature and time settings Abstract             Synthesis of ZSM-5 is carried out from dealuminated metakaolin without the addition of organic template. The synthesis is done by setting the hydrothermal temperature from 120oC, 150oC, and 170oC. The results were characterized by an X-ray diffractometer, FTIR spectrometer, and nitrogen adsorption / desorption. Hydrothermal temperature setting at 120oC for 24 hours has not produced ZSM-5, while the synthesis at 150oC for 24 hours was obtained ZSM-5 with good crystals. Hydrothermal at 170 °C can still form ZSM-5 with mordenite impurities and less crystalline than synthesis at 150 °C. Keywords: ZSM-5, dealuminated metakaolin, without organic  templates, temperature and time settings
RNA Isolation of Dengue Virus Type 2 with Different Precipitation Solvents : Methanol, Chloroform, and 2-Isopropanol. Yovilianda Maulitiva Untoro; Teguh Hari Sucipto; Harsasi Setyawati; Siti Churrotin; Ilham Harlan Amarullah; Puspa Wardhani; Aryati Aryati; Shuhai Ueda; Soegeng Soegijanto
Jurnal Kimia Riset Vol. 3 No. 1 (2018): Juni
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (416.739 KB) | DOI: 10.20473/jkr.v3i1.7455

Abstract

Dengue virus distributed in tropical and subtropical regions in the world. DENV viruses are transmitted between humans primarily by Aedes aegypti and Aedes albopictus mosquitoes and are endemic in most areas in which the vectors occur. Four serotypes of dengue virus are DENV-1, DENV-2, DENV-3 and DENV-4. DENV-2 is comprised of six genotypes. Ethanol precipitation is a commonly used technique for concentrating and de-salting nucleic acids (DNA or RNA) preparations in aqueous solution. RNA isolation by combining Guanidinium thiocyanate and phenol reported has been reported. In this report, we investigated RNA isolation from DENV-2 using QIAamp Mini Kit with 2-Isopropanol, Methanol, Chloroform precipitation solvent. Electrophoregram showed DNA band as  the result of RNA isolation with methanol and 2-isopropanol are produced quite well. Dna band of the of RNA isolation with chloroform solvent has the lowest intensity than methanol and 2-isopropanol. This study showed that methanol and 2-isopropanol  can used as precipitation solvent for isolating RNA.
PENENTUAN KADAR VITAMIN C BEBERAPA JENIS CABAI (Capsicum sp.) DENGAN SPEKTROFOTOMETRI UV-VIS Lilis Rosmainar Tambunan; Widia Ningsih; Ni Putu Ayu; Haula Nanda
Jurnal Kimia Riset Vol. 3 No. 1 (2018): Juni
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (481.502 KB) | DOI: 10.20473/jkr.v3i1.8874

Abstract

Vitamin C is one of the nutrients that act as antioxidants and effectively overcome free radicals that can damage cells or tissues, including protecting the lens from oxidative damage caused by radiation. Vitamin C is widely found in fruits, and vegetables, one of them in chili. Vitamin C in chili has a function as a good antioxidant for the body (able to increase the immune system absorbed by calcium in the body. This study aims to determine the levels of vitamin C contained in some types of chili using UV-Vis spectrophotometry method and conduct a preliminary test. The highest levels of vitamin C obtained by using spectrophotometric method at 200 nm wavelength were on red curly pepper (50 g/100 g) and followed by chili jablay orange-red (38 g/100 g), green cayenne (29 g/100 g), red pepper large (22 g/100 g), and large green chili (9 g/100 g). While based on preliminary test it was found that all chilies contain saponins, as well as only large red pepper (sample 1) and red curly pepper (sample 4) containing flavonoids Keywords: capsicum, chilly, spectrophotometry
Column Performance in Lead(II) Removal from Aqueous Solutions by Fixed-bed Column of Mango Wood Sawdust (Mangifera indica) Miranti Puspitasari
Jurnal Kimia Riset Vol. 3 No. 1 (2018): Juni
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1687.13 KB) | DOI: 10.20473/jkr.v3i1.7799

Abstract

AbstractThe contamination of water resources due to the exceed Pb content is becoming an environmental serious problem. Adsorption method in dynamic system using fixed bed column can be used to reduce the level of Pb in an attempt to suppress the toxic effects caused by Pb. This study aims to optimize the parameters of Pb adsorption on samples by mango wood sawdust in a dynamic system. Mango wood sawdust was activated by HNO3 and ethanol then packed in a column. Optimization of adsorption parameters including adsorbent heating temperature, adsorbent mass, pH of the influen solution, and the influen flow rate. The experiment result showed that the optimum conditions of mango wood sawdust to reducing Pb in samples are adsorbent was heated at temperature 145°C, using 3 grams adsorbent packed in a column, and the influen solution at pH 7 was passed at a flow rate 1 mL/min. Adsorption capacity of mango wood sawdust in reducing Pb in samples at optimum condition is equal to 14.8 mg/g of adsorbent and types of adsorption that occurs between the adsorbent with adsorbate is chemical adsorption . Keywords: Adsorption, dynamic system, fixed-bed column, mango wood sawdust, lead metal
SYNTHESIS AND CHARACTERIZATION OF CASSAVA PEEL CARBON ACTIVATED USING ZnCl2¬ Luki Aprilliya Setiyoningsih
Jurnal Kimia Riset Vol. 3 No. 1 (2018): Juni
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (703.405 KB) | DOI: 10.20473/jkr.v3i1.7777

Abstract

In this study, to determine the characteristics of charcoal from the manufacture using a modification tool, and to determine the effect of system density variation. Activated charcoal is made through several stages namely, dehydration, carbonization and activation. The use of the modifikation at the carbonization stage will result in different activated charcoal. The activation proses used in chemical activation by immersing the charcoal in a ZnCl2 activator solution. The charcoal massa period used is 1:1 with the charcoal massa : the activator period. Comparison of the massa used to produce increased system density of 2%, 4%. 6%, 8%, and 10%. The activation time used in accordance with the previous study was 8 hours. The active charcoal made using the modified means is obtained for the optimum 2% effect of system density at 8 hours of activation time. Characteristic values obtained at 2% system density were 3.67% moisture content, ash content 13.5%, iod absorption 277 mg / g, and density 0.31 g / mL.Keyword:activated charcoal, modifiers, chemical activation
BIODEGRADASI ZAT WARNA ACID ORANGE 7 MENGGUNAKAN ENZIM JAMUR TIRAM PUTIH (PLEUROTUS OSTREATUS) Achmad Amiruddin; Hasri Hasri; Sudding Sudding
Jurnal Kimia Riset Vol. 3 No. 1 (2018): Juni
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (427.105 KB) | DOI: 10.20473/jkr.v3i1.8901

Abstract

Synthetic dyes is most be usedin the textile industry because it is stable, easy to obtain, and cheap,the waste, however,is difficult to degrade, so it can cause contaminants in the waters and disrupt the aesthetics of water bodies. One of the alternative and environmentally-friendly methods that can be used to degrade dyestuff waste prior to discharge into the waters is by utilizing microorganisms as degrading agents. Therefore, this study aims to determine the ability of P.ostreatus fungus enzymes in degrading acid orange dyes 7 based on the variation of degradation time. The results showed that P.ostreatus fungus enzyme was able to degrade the orange acid 7 until 59.36%  Keywords: degradation, acid orange 7, white oyster mushroom (P.ostreatus)
DEKOLORISASI AIR LIMBAH PENGOLAHAN GURITA MENGGUNAKAN METODE AOT(ADVANCE OXIDATION TREATMENT) DENGAN REAGEN FENTON Ganden Supriyanto; Khoirun Nisak R; Abdulloh Abdulloh
Jurnal Kimia Riset Vol. 3 No. 1 (2018): Juni
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (712.443 KB) | DOI: 10.20473/jkr.v3i1.7798

Abstract

ABSTRACT This research aims to determine the effectiveness of Advance Oxidation Treatment (AOT) method with the use of Fenton reagent in decolorization of octopus canning wastewater’s red colour. The use of Fenton reagent (H2O2 and Fe2+) will produce hydroxyl radicals (∙OH) that will oxidize the red colour so the octopus canning wastewater to be colourless and safe to discharged into the environment. Determination of octopus canning wastewater's decolorization is done by determining the change of red color's intensity using Pt/Co scale. The main parameter in determining the decolorization of octopus canning wastewater using Advanced Oxidation Treatment (AOT) with Fenton reagent are time, concentration of Fe2+, concentration of H2O2, and pH. The maximum decolorization of octopus canning wastewater was reached at following condition rarely 55 minutes, with Fe2+ concentration of 42,86 ppm, H2O2 concentration of 85,71 ppm, and pH 4. With a capacity of red color’s decolorization is 49,08 %. Key words : Advance Oxidation Treatment (AOT), decolorization, Fenton reagent    ABSTRAK Penelitian ini bertujuan untuk mengetahui efektifitas metode Advance Oxidation Treatment  (AOT)  dengan menggunaan reagen Fenton dalam mendekolorisasi warna merah yang terdapat dalam air limbah pengolahan gurita. Penggunaan reagen Fenton (H2O2 dan Fe2+) akan menghasilkan radikal hidroksil (∙OH) yang bisa menghilangkan warna merah yang terdapat di dalam limbah sehingga limbah menjadi tidak berwarna dan aman untuk dibuang ke lingkungan. Penentuan dekolorisasi air limbah pengolahan gurita dilakukan dengan menentukan perubahan intensitas warna merah menggunakan skala Pt/Co. Parameter utama yang digunakan dalam metode Advance Oxidation Treatment  (AOT) adalah waktu, konsentrasi Fe2+, konsentrasi H2O2, dan pH. Hasil optimum dari dekolorisasi air limbah pengolahan gurita adalah pada waktu 55 menit, konsentrasi Fe2+ 42,86 ppm, konsentrasi H2O2 85,71 ppm, dan pH 4. Dengan kapasitas dekolorisasi warna merah sebesar 49,08 %. Kata kunci  : Advance Oxidation Treatment  (AOT), dekolorisasi, reagen Fenton 
AKTIVITAS DAN SELEKTIVITAS KATALIS Ni/H5NZA TERHADAP HIDRORENGKAH METIL OLEAT MENJADI SENYAWA HIDROKARBON FRAKSI PENDEK Ratno Budiyanto; Donatus Setyawan; Novita Andarini
Jurnal Kimia Riset Vol. 3 No. 1 (2018): Juni
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (964.029 KB) | DOI: 10.20473/jkr.v3i1.8902

Abstract

It has conducted on the activity and selectivity of Ni/H5NZA catalyst toward the hydrocracking of oleat methyl catalytic becomes short fraction hydrocarbon compounds with the variation of Ni concentration such as 1%, 2% and 3% (% w/w) for oleat methyl catalytic hydrocracking becomes short fraction hydrocarbon compounds (C5-C11 hydrocarbon). The catalyst is prepared by wet impregnation method, then followed by calcinations at 500oC, oxidation at 400oC and reduction at 500oC, each of them are followed by a stream of nitrogen, oxygen and hydrogen with ± 5mL/second in stream velocity. The characterization of catalyst includes the determination of Si/Al ratio, Ni metal that were impregnated by using AAS instrument, and the acid determination by using gravimetric method. The hydrocracking process is done in flow-fixed bed reactor at 500oC; the catalyst are heated at first and followed by the reactants which are heated in pyrolysis reactor up to it change into vapor, then they are moved into the hydrocracking reactor. The liquid from hydrocracking process is collected and analyzed by using Gas of Chromatography (GC) and Gas of Chromatography-Mass spectrometer (GC-MS). The characterization results showed in general that Si/Al ratio decreases after being impregnated by Ni metal. The amount of Ni metal almost reach a half of early Ni concentration which is impregnated. On the other hands, the acid amount of catalyst after being impregnated by Ni metal rise higher than those before being impregnated by Ni metal. The research showed that the activity and selectivity of Ni-2%/H5NZA catalyst is better in hydrocracking hydrocarbon compounds which are shorter. The activity of Ni-2%/H5NZA catalyst reaches 91.3041%. Meanwhile the selectivity is more selective in creating the hydrocarbon compounds with C5-C11 chain and more lead to the formation of alkane and alkene. Keywords: methyloleate, catalyst, Ni/H5NZ,hydrocracking
PEMBUATAN DAN KARAKTERISASI MEMBRAN FOTOKATALITIK HOLLOW FIBER SELULOSA ASETAT-TiO2 UNTUK DEGRADASI REMAZOL RED 198 Mevitri Rahmiati; Siti Wafiroh; Pratiwi Pudjiastuti
Jurnal Kimia Riset Vol. 3 No. 1 (2018): Juni
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (788.548 KB) | DOI: 10.20473/jkr.v3i1.8238

Abstract

Pengolahan limbah cairdapat menggunakan membran fotokatalitik yang dikompositkan dengan TiO2, salah satunya untuk degradasi limbah zat warna remazol red 198. Tujuan penelitian ini untuk pembuatan dan karakterisasi membran fotokatalitik hollow fiberselulosa asetat-TiO2untuk degradasi remazol red 198. Membran hollow fiberdibuat dengan metode inversi fasa menggunakan larutan dopedengan perbandingan komposisi selulosa asetat, aseton, dan formamida (22%, 51%, dan 27%). Kemudian TiO2ditambahkan dengan variasi konsentrasi 0,10%; 0,15%; 0,20%; 0,25%; 0,30% (b/b). Karakterisasi membran hollow fibermeliputi uji ketebalan, uji mekanik, uji kinerja dan efisiensi membran fotokatalitik hollow fiberuntuk degradasi remazol red 198. Dari hasil penelitian diperoleh membran hollow fiberselulosa asetat-TiO2yang optimum pada penambahan TiO2sebesar 0,25%. Membran hollow fiberselulosa asetat-TiO2yang optimum mempunyai sifat mekanik yaitu keteblannya 0,1433 mm nilai tegangan 502,74 kN/m2nilai regangan 0,133 dan modulus young4781,13 kN/m2. Kinerja membran fotokatalitik hollow fiber mempunyai nilai fluks 17,41 L/m2jam dan rejeksi 91,8%. Efisiensi degradasi membran selulosa asetat-TiO2dan TiO2terhadapremazol red 198murni sebesar 92,43% dan 95,56%. Sedangkan efisiensi degradasi membran selulosa asetat-TiO2dan TiO2terhadap limbah cair sebesar 81,77% dan 88,34%.
4-ETOKSI-3-METOKSIFENOL DAN METIL-3,4-DIHIDROKSIBENZOAT, DUA SENYAWA TURUNAN FENOLIK DARI EKSTRAK ETIL ASETAT KULIT UMBI GADUNG (Dioscorea hispida Dennst) DAN AKTIVITAS ANTIOKSIDAN EKSTRAK ETIL ASETAT Nanik Siti Aminah; Alfinda Novi Kristanti; Qonitah Labibah; Ana Firdausyah; Yoshiaki Takaya
Jurnal Kimia Riset Vol. 3 No. 1 (2018): Juni
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (761.177 KB) | DOI: 10.20473/jkr.v3i1.8873

Abstract

Two phenolic compoundnamely 4-ethoxy-3-methoxyphenol and methyl-3,4-dihydroxybenzoic have been isolated fromDioscorea hispida Dennst. The isolation of phenolic compounds was done by maceration methods using methanol, followed by partition with n-hexane and ethyl acetate. The process of separation and purification used various chromatography techniques including vacuum liquid chromatography, column chromatography, and radial chromatography. The structure of isolated compounds were determined by spectroscopic methods including UV-Vis, IR, 1D and 2D NMR. The ethyl acetate extract was evaluated for DPPH free radical scavenging activity assay. The IC50of ethyl acetate extract was 415 ppm. The result of this assay indicated that ethyl acetate extract has a potential as an antioxidant.  Keywords: Dioscorea hispida Dennst, Dioscoreaceae, phenolic, 4-ethoxy-3-methoxyphenol, methyl-3,4-dihydroxybenzoic, and antioxidant

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