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All Journal Reaktor Journal of Engineering and Technological Sciences agriTECH Jurnal Litbang Industri Jurnal Teknologi Kimia Unimal Jurnal Litbang Industri Aceh International Journal of Science and Technology Teknologi dan Industri Pertanian Indonesia JURNAL REKAYASA KIMIA & LINGKUNGAN
Husni Husin
Universitas Syiah Kuala
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology

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Oksidasi Parsial Metana Menjadi Metanol dan Formaldehida Menggunakan Katalis CuMoO3/SiO2 : Pengaruh Rasio Cu:Mo, Temperatur Reaksi dan Waktu Tinggal Husni Husin; Lia Mairiza; Zuhra Zuhra
Jurnal Rekayasa Kimia & Lingkungan Vol 6, No 1 (2007): Jurnal Rekayasa Kimia & Lingkungan
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

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Abstract

Oksidasi parsial metana menjadi metanol dan formaldehida menggunakan katalis tembaga molybdenum oksida berpenyangga silica (CuMoO3/SiO2) telah dilakukan. Preparasi katalis dilakukan dengan metode impregnasi. Hasil identifikasi dengan XRD menunjukkan bahwa komponen katalis terdiri dari senyawa MoO3, CuO, dan SiO2. Uji kinerja katalis dilangsungkan dalam reactor pipa lurus berunggun tetap, beroperasi pada temperature 400, 425, 450, 475, dan 500oC, dengan waktu tinggal (W/F) 5,82, 9,7, dan 14,55 gram katalis jam/mol. Produk reaksi dianalisis menggunakan gas kromatografi dengan kolom molsieve 5A dan porapak-Q. konversi metana tertinggi sebesar 36,83% diperoleh saat menggunakan katalis dengan rasio Cu:Mo=1:1,5 pada W/F 14,55 grcatjam/mol dan temperatur reaksi 500oC. Selektivitas metanol tertinggi diperoleh 11,19 % menggunakan katalis dengan rasio Cu : Mo 1 : 3,5 pada W/F 5,82 grcat.jam/mol dan temperatur reaksi 400oC. Selektivitas formaldehida tertinggi diperoleh 20,75% menggunakan katalis dengan rasio Cu : Mo 1 : 2,5 pada W/F 9,7 grcatjam/mol dan temperatur reaksi 400oC.Keywords: formaldehida, katalis CuMoO3/SiO2, metanol, oksidasi metana
Preparasi dan karakterisasi fotokatalis NaTaO3 didoping ion lantanum (La/NaTaO3) dengan metode sol-gel Husni Husin
Jurnal Rekayasa Kimia & Lingkungan Vol 8, No 2 (2011): Jurnal Rekayasa Kimia & Lingkungan
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

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Abstract

Crystalline sodium tantalate doped with La3+ ions (La/NaTaO3) has been successfully synthesized by sol-gel technique. The photocatalysts have been prepared by mixing of TaCl5, NaOH, and La(NO3)3.2H2O in the aqueous solution of H2O2. The resulting materials are characterized by X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET), and transmission electron microscopy (TEM) to provide useful information about crystallinity and morphology. All samples are exactly indexed as the pure NaTaO3 orthorhombic structure with the space group Pcmn. The XRD spectra displayed a single-phase NaTaO3 structure without any impurity phase, suggesting that lanthanum is uniformly incorporated into the NaTaO3 lattice. TEM images indicates that the particle sizes of the La-doped NaTaO3 powders are approximately 30-80 nm, while the particle sizes of the non-doped NaTaO3 are around 80-250 nm. Doping lanthanum in the NaTaO3 is able to prevent agglomeration, result in particle size, and better crystallinity. The La/NaTaO3 crystal structures reveal that a certain amount of lattice distortion due to the La3+ ions occupying the Na+ sites results in the increase of crystallite size. Powder formation mechanisms for both non-doped NaTaO3 and La-doped NaTaO3 are proposed based on the experimental results.Keywords: La-doped sodium tantalum oxide, photocatalyst, sol-gel, perovskite, orthorhombic
Produksi Hidrogen Secara Fotokalitik dari Air Murni Pada Katalis NaTaO3 Husni Husin
Jurnal Rekayasa Kimia & Lingkungan Vol 9, No 2 (2012): Jurnal Rekayasa Kimia & Lingkungan
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

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Abstract

Study of hydrogen production as a green energy on NaTaO3 photocatalyst has been done. The aim of this work is to study the photocatalytic properties of NaTaO3 and NiO incorporated NaTaO3 used in water splitting reaction. The NaTaO3 powder with high crystallinity has been synthesized by a H2O2-asissted sol-gel route calcined at a temperature of 900 oC. NiO as a cocatalyst is deposited by impregnation of Ni(NO3)2.6H2O solution. The catalysts are characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), high resolution transmission electron microscopy (HRTEM), and diffuse reflectance UV-Vis (DR-UV-Vis). The photocatalysts have a band gap energy ca. 4.01 and 4.00 eV (corresponding to absorption edge of 310 and 311 nm). Photocatalytic activity towards hydrogen generation from water is investigated using a glass reactor under ultra violet (UV) light illumination. Photocatalytic of H2 and O2 production on the pristine NaTaO3 are 0.61 and 0.30 mmol g-1 cat.h-1, respectively. The activities are greatly enhanced 8.5 times higher by the incorporation of NiO as cocatalysts on the prepared oxides. NiO is found to give rise to more efficient photocatalytic activity for hydrogen evolution. The NaTaO3 nanoparticles produces using this facile have: better crystallinity, smaller size, and higher photocatalytic activity.Keywords: Sodium tantalum oxide; Nickel oxide; Sol-gel; impregnation; Hydrogen evolution
Pembuatan Katalis Padat ZrO2/Al2O3 untuk Produksi Biodiesel dari Minyak Jarak Yanna Syamsuddin; Husni Husin
Jurnal Rekayasa Kimia & Lingkungan Vol 7, No 3 (2010): Jurnal Rekayasa Kimia & Lingkungan
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

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Abstract

Biodiesel is one of the alternative energy to replace petroleum diesel. Biodiesel is produced by transesterification of vegetable oil into alkyl ester and glycerol as by-product. The vegetable oil based put biodiesel as a renewable and environmentally friend energy source. Research on making of solid catalyst ZrO2/Al2O3 for biodiesel production from jatropha oil has been done. The catalysts were prepared by impregnation method with different amount of Zr (2, 5, 15, and 20%) and the components were characterized by using XRD. Transesterification reaction was done by reacting jatropha oil with methanol and catalyst with the ratio of oil to methanol of 1:6, reaction temperature of 60oC, and reaction time of 3 hours. Biodiesel produced were analyzed for their yield and composition using GC-MS. The biodiesel products were also characterized for their viscosity, density, acidic and saponification value. Characterization of catalysts showed that components of synthesized ZrO2/Al2O3 were ZrO, ZrO2, and Al2O3. The highest yield of biodiesel produced was resulted from transesterification reaction using catalyst with 2% Zr. GC-MS results showed that methyl esters of biodiesel produced confirmed with fatty acids in jatropha oil with methyl oleic is the highest. Characteristic of the biodiesel has met the quality standard of ASTM, prEN and SNI.Keywords: biodiesel, katalis, minyak jarak, ZrO2/Al2O3
Pembuatan Katalis Cu/ZnO/Al2O3 untuk Proses Steam Reforming Metanol menjadi Hidrogen sebagai Bahan Bakar Alternatif Husni Husin; Yanna Syamsuddin
Jurnal Rekayasa Kimia & Lingkungan Vol 7, No 3 (2010): Jurnal Rekayasa Kimia & Lingkungan
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

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Abstract

Study on the use of copper zinc oxide supported on alumina catalyst for steam reforming of methanol to hydrogen has been done. The aim of this work is to study the catalytic properties of copper based catalysts used in the steam reforming of methanol. This method is known as one of the most favorable catalytic processes for producing hydrogen on-board. The catalyst was prepared by impregnation method with Cu loading of 5%, 10%, and 15%,. The X-ray diffraction pattern shows that the catalyst compositions are Cu, CuO, ZnO, and Al2O3. The reactions were carried out in the fixed bed tubular reactor operating at temperatures of 150oC, 200oC, 250oC, 300oC, and 350oC and atmospheric pressure. The product was analyzed using Shimadzu Gas Chromatography GC 8A with mole sieve 5A and porapak-N column 80/100 mesh. The performance of the catalyst shows that the highest methanol conversion was 86% over Cu/ZnO/Al2O3 catalyst with 15% of Cu loading. The selectivity and yield of hydrogen was 66% and 57% respectively over Cu/ZnO/Al2O3 catalyst with 15% of Cu loading. Selectivity of carbon dioxide is 18% over Cu/ZnO/Al2O3 catalyst with 15% of Cu loading at 300oC.Keywords: alumina oxide catalyst, copper zinc oxide, hydrogen, impregnation
ADSORPSI ION LOGAM CD (II) DENGAN MENGGUNAKAN ADSORBEN DARI KULIT PINANG (ARECA CATECHU. L) Deri, Nur Octavia; Muslim, Abrar; Husin, Husni; Zulfikar, Zulfikar
Jurnal Teknologi Kimia Unimal Vol 13, No 2 (2024): Jurnal Teknologi Kimia Unimal - Nopember 2024
Publisher : Chemical Engineering Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/jtku.v13i2.19432

Abstract

Penelitian ini bertujuan untuk melihat kemampuan kulit pinang dalam menyerap ion logam Cd (II), menentukan pengaruh konsentrasi awal adsorbat dan waktu pengontakan terhadap efisiensi penyerapan ion logam Cd (II). Untuk menganalisa kadar logam Cd (II) digunakan alat Spektrofotometri Serapan Atom (AAS). Variabel tetap yang digunakan pada massa adsorben (1 gram), volume larutan umpan (100 ml) dan kecepatan pengadukan (75 rpm). Variabel berubah terdiri dari konsentrasi larutan (9,83; 49,16; 98,32; 245,81; 511,62; dan 1023,24 ppm) dan waktu kontak (0, 10, 30, 60, dan 90 menit). Parameter penelitian yang ditinjau meliputi kapasitas adsorpsi, efisiensi penyerapan, dan hubungan temperatur operasi terhadap kapasitas adsorpsi. Dari hasil penelitian diperoleh adsorpsi optimum terjadi pada konsentrasi larutan 1023,24 mg/L pada aktivasi kimia KOH 1 M dan pH 7. Nilai kapasitas adsorpsi dan nilai efisiensi penyerapan pada saat kesetimbangan berturut-turut adalah sebesar 99,781 mg/g dan 97,51%. Pada suhu ruangan dengan variasi konsentrasi awal larutan Cd (II) (1023,24; 511,62; 98,32; 49,16; 9,83 mg/L), adsorpsi kemungkinan menyerupai isotherm Freundlich dengan nilai korelasi (R2) 0,930. Untuk konstanta Freundlich (Kf) sebesar 4,32 mg/g, dan nilai 1/n sebesar 1,67. Pada suhu ruangan dengan konsentrasi awal larutan Cd (II) 1023,24 mg/L, adsorpsi mengikuti model kinetika orde dua dengan nilai konstanta kinetika (k2) sebesar 0,422 min-1 dan nilai kapasitas adsorpsi pada saat kesetimbangan (qe) adalah sebesar 89,158 mg/g.
Carbon Dioxide (CO2) Separation Study Using Chemically Activated Serpentine as an Adsorbent Dhedia, Muhammad Fannka; Mahidin, Mahidin; Husin, Husni; Hisbullah, Hisbullah; Razali, Nasrullah; Reza, Alvan Ade; Hadi, Abdul
Jurnal Rekayasa Kimia & Lingkungan Vol 19, No 2 (2024): Jurnal Rekayasa Kimia & Lingkungan (December, 2024)
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v19i2.41399

Abstract

The increase in carbon emissions resulting from industrial activities has become a major concern for environmental and climate conditions. Carbon Capture and Storage (CCS) represents a significant effort to mitigate the CO2 problem. Aceh Province possesses a potential distribution of serpentine, which may serve as an effective material for CCS applications. This study evaluates the effects of gas flow rate, particle size, sorbent weight, and pressure on CO2 adsorption using chemically activated serpentine. The activation process involved hydrochloric acid (HCl) at three concentrations: 8%, 9%, and 10%, with particle sizes of 50 mesh, 100 mesh, and 150 mesh. Activation was conducted at room temperature with an acid-to-serpentine ratio of 10:1 for 30 minutes. Adsorption tests were performed at ambient temperature under pressures of 2, 3, and 4 bar, with adsorption times of 30, 60, and 120 minutes. Results indicate that activated serpentine treated with 9% HCl and a particle size of 150 mesh achieved the highest performance, demonstrating an adsorption efficiency of 33.01% and an adsorption capacity of 82.22% (0.0488 g CO2/g adsorbent) at a pressure of 2 bar. Both the Langmuir and Freundlich isotherm models closely fit the data (R = 1). This study concludes that HCl activation significantly enhances the capacity and efficiency of serpentine as a CO2 adsorbent.
Co-Authors Abdul Hadi Abrar Muslim AHMADI Deri, Nur Octavia Dhedia, Muhammad Fannka Gani, Asri Hamdani Umar Hani, M. Reza Hisbullah Hisbullah Jakfar*, Jakfar Jefry Yusuf Justaman Arifin Karo Karo Khairil, Khairil Komala Pontas Lia Mairiza Mahidin Mahidin Mahidin Mahidin Mahidin, Mahidin Marwan Marwan Marwan Marwan Marwan Marwan Muhammad Zaki Muslim, Abrar Nasution, Fahrizal Razali, Nasrullah Reza, Alvan Ade Rizal, Samsul S. Saisa S. Syawaliah Saifullah Ramli Sofyana, Sofyana Syukur, Muhammad Teku Muhammad Asnawi Wahyu Rinaldi Yuliana Sy Zuhra Zuhra Zulfikar Zulfikar