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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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Synthesis of Nanocrystalline of Lanthanum Doped NaTaO3 and Photocatalytic Activity for Hydrogen Production Husin, Husni; Pontas, Komala; Sy, Yuliana; Syawaliah, S.; Saisa, S.
Journal of Engineering and Technological Sciences Vol 46, No 3 (2014)
Publisher : ITB Journal Publisher, LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (603.06 KB) | DOI: 10.5614/j.eng.technol.sci.2014.46.3.6

Abstract

Sodium tantalum oxide doping lanthanum (La-NaTaO3) compounds were successfully synthesized by a sol-gel method and calcined at different temperatures. Tantalum chloride (TaCl5) was used as starting material and lanthanum nitrate (La(NO3)3.6H2O) as lanthanum source. X-ray diffraction (XRD) revealed that the calcination temperature strongly influenced the crystallinity of the prepared samples.The crystallite sizes of the resultant La-NaTaO3were in the range of 27-46 nm. The photocatalytic activities of the samples were examined for hydrogen production from an aqueous methanol solution under UV light irradiation. It was found that the photocatalytic activity of the La-NaTaO3 depended strongly on the calcination temperature. The range of calcination temperatures were 500, 700, and 900°C. The La-NaTaO3 sample calcined at 900°C showed the highest photocatalytic activity compared to the samplescalcined at the other temperatures. The rate of hydrogen production reached a value of 6.16 mmol h-1 g-1 catalyst.
Sulfur Removal in Bio-Briquette Combustion Using Seashell Waste Adsorbent at Low Temperature Mahidin, Mahidin; Gani, Asri; Muslim, Abrar; Husin, Husni; Hani, M. Reza; Syukur, Muhammad; Hamdani, Hamdani; Khairil, Khairil; Rizal, Samsul
Journal of Engineering and Technological Sciences Vol 48, No 4 (2016)
Publisher : ITB Journal Publisher, LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (361.363 KB) | DOI: 10.5614/j.eng.technol.sci.2016.48.4.8

Abstract

Presently, biomass is mostly utilized as co-fuel in coal combustion in view of energy diversification and emission reduction. However, since the coal content of bio-briquettes is high (up to 80% in this study), gas emissions such as those of SOx still occur. Therefore, the introduction of SO2adsorbent is common in coal briquette or bio-briquette combustion. A calcium-based material is usually used for this goal. The aim of this study was to observe the effects of desulfurization temperature and Ca/S ratio (Ca = calcium content in adsorbent; S = sulfur content in coal and biomass) on desulfurization efficiency and kinetics. The ratio of coal to biomass (palm kernel shell/PKS) was fixed at 90:10 (wt/wt) and the ratios of Ca to S were varied at 1:1, 1.25:1, 1.5:1, 1.75:1 and 2:1. The mixtures of coal, PKS and adsorbent were briquetted at a molding pressure of 6 ton/cm2 with Jatropha curcas seeds and starch mixture as binding agents. Desulfurization was performed within a temperature range of 300 to 500°C for 720 seconds at an airflow rate of 1.2 L/min. The results showed that the highest desulfurization efficiency (90.6%) was associated with the Ca/S ratio of 2:1 and temperature of 400°C. Moreover, the highest reaction rate constant of desulfurization was 0.280 min-1.
Preparasi Katalis Abu Kulit Kerang untuk Transesterifikasi Minyak Nyamplung Menjadi Biodiesel Zuhra Zuhra; Husni Husin; Fikri Hasfita; Wahyu Rinaldi
agriTECH Vol 35, No 1 (2015)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (257.964 KB) | DOI: 10.22146/agritech.9421

Abstract

Biodiesel, as a potential substituted energy, has attracted a great attention in recent years, which can be produced from o3 renewable sources and provides complete combustion with less gaseous pollutant emission. Biodiesel is produced conventionally via transesterification of vegetable oils using homogeneous catalysts, e.g. KOH, NaOH, and HaSO4. The homogeneous catalytic process, however, provides some disadvantages, such as, a huge production of wastewater from washing process of catalyst residues and non-reusability of the catalysts. In order to circumvent most of the economical and environmental drawbacks of homogeneous process, heterogeneous catalysts, this can be easily separated from reaction mixture by filtration. These catalysts are less corrosive and more environment-friendly. The objective of this work was to develop the effectivity of using waste of cockle (Clinocardium nuttalli) shell as a heterogeneous base catalyst for the biodiesel production. The catalysts were prepared by simple calcination methods, at temperatures of 600, 700, 900 oC, and without calcination. Calcined catalysts were characterized by X-ray diffraction (XRD) and Scanning Electron Microscopy (SEM) technique. Transesterification process of Calophyllum inophyllum L.oil and o methanol were carried out under bath reactor over the cockle shellcatalysts to produce biodiesel. The XRD patterns depicted that CaCO3 was successfully converted into CaO. SEM recorded demonstrates that the particle catalyst become smaller after heating. The highest activity was found at calcined catalyst of 900 oC, with the yield of biodiesel reaching 87.4% during 3 hours. The solid catalyst from waste cockle shell was proven to be durable for the transesterification of edible oil.ABSTRAKBiodiesel, sebagai sumber energi potensial telah menarik perhatian dalam beberapa tahun terakhir, karena dapat diproduksi dari sumber terbaharukan dan menghasilkan polutan yang rendah. Secara konvensional, biodiesel diproduksi melalui transesterifikasi minyak nabati menggunakan katalis homogen, yaitu: KOH, NaOH, dan H2SO4. Proses katalitik homogen memiliki beberapa kekurangan, seperti: banyak mengeluarkan air buangan dari pencucian residu katalis dan tidak dapat digunakan kembali. Untuk mengatasi kekurangan penggunaan katalis homogen baik secara ekonomi maupun lingkungan ditempuh dengan mengembangkan katalis heterogen atau katalis padat, yang dapat dengan mudah dipisahkan dari campuran reaksi secara filtrasi. Katalis ini juga rendah korosi dan lebih ramah lingkungan. Tujuan dari penelitian ini adalah untuk mengetahui efektivitas penggunaan abu kulit kerang yang mengandung CaO (kalsium oksida) sebagai katalis heterogen terhadap rendemen biodiesel. Bahan baku untuk pembuatan biodiesel adalah minyak nyamplung. Katalis disiapkan dengan metode kalsinasi sederhana pada temperatur: 600, 700, 900 oC, dan tanpa kalsinasi. Setelah kalsinasi, katalis dikarakterisasi denganmetode X-ray Diffraction (XRD) dan Scanning Electron Microscopy (SEM). Reaksi transesterifikasi minyak nyamplung dengan metanol dilangsungkan di dalam reaktor berpengaduk menggunakan katalis padat dari kulit kerang. Dari pola XRD mengindikasikan bahwa CaCO3 terkonversi dari kulit kerang sempurna menjadi CaO ketika kulit kerang dikalsinasi pada suhu 900 oC. Hasil rekaman SEM diperoleh ukuran partikel katalis setelah dipijar menjadi kecil. Aktivitas katalis tertinggi diperoleh pada penggunaan abu kulit kerang yang dikalsinasi pada suhu 900 oC. Rendemenmetil ester tertinggi mencapai 87,4% setelah 3 jam reaksi. Katalis abu kulit kerang telah terbukti dapat digunakan untuk reaksi transesterifikasi minyak nabati menjadi biodiesel.
STUDI PENGGUNAAN KATALIS ABU SABUT KELAPA, ABU TANDAN SAWIT DAN K2CO3 UNTUK KONVERSI MINYAK JARAK MENJADI BIODIESEL Husni Husin; Mahidin Mahidin; Marwan Marwan
Reaktor Volume 13, Nomor 4, Desember 2011
Publisher : Dept. of Chemical Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (280.026 KB) | DOI: 10.14710/reaktor.13.4.254-261

Abstract

A STUDY ON THE UTILIZATION OF OIL PALM FIBRE AND FRUIT BUNCH ASH AND K2CO3 FOR CATALYTIC CONVERSION OF JATHROPA OIL TO BIODIESEL. Study on the use of coconut fiber ash, palm bunch ash and K2CO3 as the catalysts for conversion of jatropha oil into biodiesel using methanol solvent has been done. The biodiesel is produced by converting unpurified jatropha oil over catalyst through transesterification reaction. The catalysts are burned at temperature of 500, 600, 800 and 900oC for 10 hours. Transesterification reaction is conducted in three-neck flask at constant temperature of 60oC for 3 hours. The results showed that the unburned and burned coconut fiber ashes at 800oC catalysts give the highest biodiesel yield (87.05 and 87.97%) with low soap content (0.23-0.26%). The characteristic of biodiesel produced over those catalysts met the Indonesian and international quality standards, therefore those catalysts can be used as substitute for K2CO3 commercial catalyst.Abstrak   Studi penggunaan katalis abu sabut kelapa, abu tandan sawit dan K2CO3 untuk konversi minyak jarak menjadi biodiesel dengan pelarut metanol telah dilakukan. Biodiesel dibuat melalui konversi minyak jarak yang belum dimurnikan, menggunakan katalis, melalui reaksi transesterifikasi. Katalis-katalis tersebut dipijarkan pada temperatur 500, 600, 800 dan 900oC selama 10 jam. Reaksi dilangsungkan dalam labu leher tiga pada temperatur konstan 60oC selama 3 jam. Hasil penelitian menunjukkan penggunaan katalis abu sabut kelapa tanpa pemijaran dan dengan pemijaran pada 800oC memberikan perolehan biodiesel tertinggi (87,05 dan 87,97%) dengan kadar sabun rendah (0,23-0,26%). Karakteristik biodiesel yang dihasilkan dari penggunaan katalis-katalis tersebut ini telah sesuai dengan syarat mutu yang ditetapkan oleh Standar Indonesia dan Internasional, sehingga katalis-katalis tersebut layak digunakan sebagai pengganti katalis K2CO3 komersial
Transesterifikasi minyak kemiri sunan menjadi biodiesel menggunakan katalis padat K2O/C Muhammad Zaki; Teku Muhammad Asnawi; Husni Husin; Saifullah Ramli; Sofyana Sofyana; Fikri Hasfita; Justaman Arifin Karo Karo
Jurnal Litbang Industri Vol 10, No 2 (2020)
Publisher : Institution for Industrial Research and Standardization of Industry - Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24960/jli.v10i2.6143.83-88

Abstract

Preparasi katalis padat K2O/C telah berhasil disiapkan dengan mengimpregnasi K2CO3 pada permukaan karbon aktif sekam padi selama 6 jam. Campuran tersebut dikalsinasi pada suhu 300 oC selama 3 jam hingga terbentuk K2O/C. Tujuan penelitian ini adalah untuk menginvestigasi kinerja katalis K2O/C dalam proses  transesterifikasi minyak biji kemiri sunan menjadi biodiesel. Karbon sekam padi (C) dipersiapkan dengan proses pirolisis sekam padi, dilanjutkan dengan proses aktivasi untuk mendapatkan karbon sebagai penyangga berpori. Katalis K2O/C  dikarakterisasi dengan Scanning Electron Microscopy (SEM) dan Energy-Dispersive X-ray (EDX). Hasil analisa EDX menunjukkan bahwa komposisi katalis didominasi oleh karbon (C) dan kalium (K). Fasa aktif K2O terdistribusi pada permukaan karbon aktif secara merata. Katalis K2O/C yang dihasilkan digunakan dalam reaksi transesterifikasi minyak kemiri sunan menggunakan reaktor batch. Yield biodiesel tertinggi dicapai hingga 98,68% ketika menggunakan katalis 4%, loading K2CO3  pada karbon aktif 0,5% berat, waktu  reaksi 90 menit, serta rasio molar metanol terhadap minyak 8:1. Katalis K2O/C sangat berpotensi untuk dikembangkan selanjutnya sebagai salah satu katalis padat untuk mengkonversi minyak nabati menjadi biodiesel.
Transesterifikasi minyak kemiri sunan menjadi biodiesel menggunakan katalis padat K2O/C Muhammad Zaki; Teku Muhammad Asnawi; Husni Husin; Saifullah Ramli; Sofyana Sofyana; Fikri Hasfita; Justaman Arifin Karo Karo
Jurnal Litbang Industri Vol 10, No 2 (2020)
Publisher : Institution for Industrial Research and Standardization of Industry - Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (886.651 KB) | DOI: 10.24960/jli.v10i2.6143.83-88

Abstract

Preparasi katalis padat K2O/C telah berhasil disiapkan dengan mengimpregnasi K2CO3 pada permukaan karbon aktif sekam padi selama 6 jam. Campuran tersebut dikalsinasi pada suhu 300 oC selama 3 jam hingga terbentuk K2O/C. Tujuan penelitian ini adalah untuk menginvestigasi kinerja katalis K2O/C dalam proses  transesterifikasi minyak biji kemiri sunan menjadi biodiesel. Karbon sekam padi (C) dipersiapkan dengan proses pirolisis sekam padi, dilanjutkan dengan proses aktivasi untuk mendapatkan karbon sebagai penyangga berpori. Katalis K2O/C  dikarakterisasi dengan Scanning Electron Microscopy (SEM) dan Energy-Dispersive X-ray (EDX). Hasil analisa EDX menunjukkan bahwa komposisi katalis didominasi oleh karbon (C) dan kalium (K). Fasa aktif K2O terdistribusi pada permukaan karbon aktif secara merata. Katalis K2O/C yang dihasilkan digunakan dalam reaksi transesterifikasi minyak kemiri sunan menggunakan reaktor batch. Yield biodiesel tertinggi dicapai hingga 98,68% ketika menggunakan katalis 4%, loading K2CO3  pada karbon aktif 0,5% berat, waktu  reaksi 90 menit, serta rasio molar metanol terhadap minyak 8:1. Katalis K2O/C sangat berpotensi untuk dikembangkan selanjutnya sebagai salah satu katalis padat untuk mengkonversi minyak nabati menjadi biodiesel.
KATALIS BIMETAL Cu-Cr/DIATOMEA UNTUK HIDROGENASI MINYAK SAWIT Husni Husin
Jurnal Teknologi dan Industri Pertanian Indonesia Vol 4, No 2 (2012): Vol.(4) No.2, June 2012
Publisher : Agricultural Faculty

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (538.912 KB) | DOI: 10.17969/jtipi.v4i2.265

Abstract

A series of bimetallic Cu-Cr supported onto diatomite was synthesized using impregnation method and characterized using X-ray diffractometer (XRD) technique. The catalyst compositions were CuCrO2, Cu2O, Al2O3 and SiO2. The catalyst contained 5, 10, 20, and 30 wt.%  of Cu-Cr respectively, with Cu : Cr ratio of 1:1. The catalytic performance of the samples was evaluated based on the application to a hydrogenated  palm oil at 70oC and 7 bar of pressure by measuring its iodine number. The result showed that the bimetallic Cu-Cr deposited onto diatomite was an effective catalysts for hydrogenation of palm oils and its catalytic activity was highly dependent on the composition of metals. Iodine number of palm oil decreased to 27.2  from 43.28 by using of 30 wt.% of Cu-Cr after 120 minutes reaction   almost similar to the performance of commercial nickel catalyst that could decrease the iodine number to 26.1. Keywords: hydrogenation, palm oil, copper-chromium, diatomite, impregnation.
Development of Sour Flavored Noni Juice Using Lactic Acid Compound as a Fermentation Media and Optimation Jakfar*, Jakfar; Husin, Husni; Nasution, Fahrizal; Ahmadi, Ahmadi
Aceh International Journal of Science and Technology Vol 12, No 3 (2023): December 2023
Publisher : Graduate School of Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/aijst.12.3.34068

Abstract

Conventional noni juice production was placing ripe noni fruits into a juice collection vessel for two months or longer. During this time, the noni juice separates (drips) gradually from the pulp. Recent studies have shown that acid catalysts have advantages over conventional noni juice production. This method uses a lactic acid catalyst for the fermentation of noni fruit. The focus of this research is to optimize the effects of various concentrates of Aceh noni X1 (1020 ml), lactose from UHT (ultra-high temperature) milk, and Yakult as a source of Lactobacillus casei X2 (1025 ml) and X3 (2.510 ml). The response variables used were lactic acid levels (Y1, %) and protein levels (Y2, %). The influence of the three individual variables X1, X2, and X3 on the response variables Y1 and Y2 is significant at the 95% confidence level (0.05), but the interaction effect is not significant. Optimal conditions are carried out at the maximum design limits X1, minimum X2, minimum X3, maximum Y1, and maximum Y2 according to the consideration of material prices, and optimal conditions are achieved at each X1 = 20 ml, X2 = 10 ml, X3 = 15.26 ml, Y1 = 1.23% and Y2 = 2.31%, and desirability of 0.92. The lactic acid compound was a fermentation medium for the noni juice-making media. Thus, lactic acid can be believed to be a potentially promising catalyst for producing noni juice while providing economic opportunities and adding value to the noni plant industry.
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 Ahmadi Ahmadi Cut Meurah Rosnelly Darmadi Darmadi Deri, Nur Octavia Dhedia, Muhammad Fannka Gani, Asri Hamdani Umar Hani, M. Reza Hisbullah Hisbullah Jakfar*, Jakfar Jefry Yusuf Jefry Yusuf, Jefry Justaman Arifin Karo Karo Khairil, Khairil Komala Pontas Lia Mairiza Lia Mairiza Mahidin Mahidin Mahidin Mahidin Mahidin, Mahidin Marwan Marwan Marwan Marwan Marwan Marwan Marwan Marwan Muhammad Zaki Muhammad Zaki Muslim, Abrar Nasution, Fahrizal Nurhazanah, Nurhazanah Pocut Nurul Alam 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 Zuhra Zuhra Zulfikar Zulfikar