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All Journal Prosiding Semnastek Jurnal Hasil Penelitian Industri AKSELERASI: Jurnal Ilmiah Nasional Makara Journal of Science Makara Journal of Technology JURNAL REKAYASA KIMIA & LINGKUNGAN
Muhammad Dani Supardan
Jurusan Teknik Kimia, Fakultas Teknik, Universitas Syiah Kuala
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Materials Science & Nanotechnology Mechanical Engineering Social Sciences

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Kapasitas Adsorpsi Bentonit terhadap Sulfur dan Merkuri secara Simultan pada Pembakaran Batubara Yusran, Alhamidi; Supardan, Muhammad Dani; Mahidin, Mahidin
Jurnal Rekayasa Kimia & Lingkungan Vol 10, No 4 (2015): Jurnal Rekayasa Kimia & Lingkungan
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v10i4.3309

Abstract

Pemanfaatan batubara sebagai sumber energi melalui pembakaran langsung akan menghasilkan emisi gas, partikulat trace metal (logam berat) dan abu (terutama abu terbang) yang akan mencemari udara. Penanganan terhadap pencemaran tersebut merupakan hal yang sangat mendesak. Dalam studi ini ditawarkan penyelesaian secara simultan terhadap emisi SOx dan partikulat logam berat merkuri pada pembakaran batubara peringkat rendah yang ada di Aceh melalui penyerapan menggunakan bentonit alam yang juga terdapat di Aceh (juga di daerah lain di Indonesia). Penggunaan bentonit dapat mengurangi emisi gas SO2 dan partikulat trace metal Hg dalam gas buang dan abu terbang. Bentonit dapat meningkatkan afinitas atau gaya tarik menarik antara Hg dan mineral-mineral dalam bentonit dan sekaligus menurunkan afinitas Hg terhadap S atau SO2. Konsentrasi bentonit dalam kajian ini, tanpa kalsinasi dan langsung dicampur dalam batubara, adalah 0 16% dan temperatur pembakaran adalah 700 900oC. Hasil yang didapat menunjukkan bahwa kondisi maksimum penyerapan sulfur dan/atau SO2 serta merkuri terjadi pada kandungan bentonit 6% dan temperatur 700oC.
Use of Reactive Distillation for Biodiesel Production: A Literature Survey Supardan, Muhammad Dani; Satriana, Satriana
Jurnal Rekayasa Kimia & Lingkungan Vol 5, No 1 (2006): Jurnal Rekayasa Kimia & Lingkungan
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

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Abstract

Biodiesel has been shown to be the best substitute for fossil-based fuels to its environmental advantages and renewable resource availability. There is a great demand for the commercialization of biodiesel production, which in turn calls for a technically and economically reactor technology. The production of biodiesel in existing batch and continuous-flow processes requires excess alcohol, typically 100%, over the stoichiometric molar requirement in order to drive the chemical reaction to completion. In this study, a novel reactor system using a reactive distillation (RD) technique was discussed for biodiesel production. RD is a chemical unit operation in which chemical reactions and separations occur simultaneously in one unit. It is an effective alternative to the classical combination of reactor and separation units especially when involving reversible or consecutive chemical reactions such as transesterication process in biodiesel production.
Prediction of Water Loss During Potato Vacuum Frying Process Supardan, Muhammad Dani; Satriana, Satriana
Jurnal Rekayasa Kimia & Lingkungan Vol 6, No 2 (2007): Jurnal Rekayasa Kimia & Lingkungan
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

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Abstract

Vacuum frying may be a good alternative for the production of dehydrated fruit and vegetable slices. In this study, a relationship between water losses with frying time during vacuum frying process of potato chips has been developed. A first order kinetic model was used, in which drying rate constant is a function of the main process variables, i.e. oil temperature, sample thickness and vacuum pressure. The experimental data of Garayo and Moreira (2000) have been used to validate the model. Generally there was a good agreement between the calculated results and the experimental data. Then, the effect of initial water content and vacuum pressure has been studied.Keywords: kinetic model, potato, vacuum frying, water loss
Penggunaan Microsoft Excel dalam Memprediksi Aliran Fluida dalam Packed Bed Hidayati, Hidayati; Supardan, Muhammad Dani
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

Flow distribution is often a problem in the operation of the packed bed reactor. The problem is often referred as flow maldistribution and formation of localized hot spot region. This research is generally aimed to predict fluid flow distribution in the packed bed containing porous media by finite difference method using the software MS. Excel. Model verification result shows conformity between analytic method and result of calculation. Simple study of the finite difference method using the software MS. Excel can describe the fluid velocity profile in a packed bed containing porous media. This profile is similar with experiment of Kufner and Hofmann (1990) and Stephenson and Stewart (1986). The simulation was performed to determine the effect of process variables on the fluid flow velocity profile. Particle diameter influences fluid flow velocity. Bulk porosity also influences fluid flow velocity at axis up to certain distance from wall of reactor. Keywords: finite difference method, flow distribution, packed bed reactor
Optimasi Proses Ekstraksi Oleoresin Jahe (Zingiber officinale Rosc) Menggunakan Ultrasonik Hartuti, Sri; Supardan, Muhammad Dani
Jurnal Rekayasa Kimia & Lingkungan Vol 9, No 1 (2012): Jurnal Rekayasa Kimia & Lingkungan
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

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Abstract

The study on extraction of oleoresin from ginger by using ultrasonic was carried out in order to obtain the optimum condition of extraction process. The effect of ratio of ginger to solvent (ethanol, X1), extraction temperature (X2), and extraction duration (X3) are studied on the yield of oleoresin. Response surface design method with Central Composite Design (CCD) was used to obtain a mathematical model which describes the relationship between the yield of ginger oleoresin and influencing variables. The experimental results indicate that the optimum condition of extraction which yield of oleoresin of 11.026% was found at ratio of ginger to ethanol (X1) of 1:4.68 gr.ml-1, extraction temperature (X2) of 420 OC, and extraction duration (X3) of 79 minutes.Keywords: extraction, response surface method, ginger oleoresin, ultrasonic
Penggunaan Ultrasonik untuk Transesterifikasi Minyak Goreng Bekas Supardan, Muhammad Dani
Jurnal Rekayasa Kimia & Lingkungan Vol 8, No 1 (2011): Jurnal Rekayasa Kimia & Lingkungan
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

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Abstract

In this work, the ultrasound-assisted transesterification of used frying oil (UFO) was studied. A two-step pretreatment of degumming and esterification was conducted to prepare UFO as raw material for transesterification. The esterification and transesterification was performed by using ethanol as solvent in the presence of ultrasonic irradiations operating at frequency of 40 kHz. The esterification was carried out with oil to ethanol ratio of 1:10, temperature of 60oC and reaction time of 4 hours in the presence of 1 wt .% H2SO4 as an acid catalyst. Meanwhile, the transesterification reaction was carried out with oil to ethanol molar ratio of 1:8, 1:10, 1:12, 1:15; KOH catalyst concentration of 0.5, 0.75, 1, 1.25 and 1.5 wt.%; and reaction temperature of 40, 50 and 60oC. The highest biodiesel yield of 65% obtained at ultrasound-assisted transesterification condition of oil to ethanol molar ratio of 1:12, reaction temperature of 50oC and KOH concentration of 1 wt.%. The results of analysis of some parameters of the product showed biodiesel has fulfilled the specifications according to the Indonesian National Standard (SNI) 04-7182-2006 number.Keywords: Biodiesel, Esterification, Used frying oil, Transesterification, Ultrasonic
Esterification of Free Fatty Acid in Crude Palm Oil Off Grade Supardan, Muhammad Dani; Satriana, Satriana
Jurnal Rekayasa Kimia & Lingkungan Vol 7, No 2 (2009): Jurnal Rekayasa Kimia & Lingkungan
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

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Abstract

The esterification of free fatty acids (FFA) found in crude palm oil (CPO) off grade with methanol is a promising technique to convert FFA into valuable fatty acid methyl ester (FAME, biodiesel) and obtain a FFA-free oil that can be further transesterified using alkali bases. In this work, the effects of the main variables involved in the esterification process i.e. alcohol to oil molar ratio, reaction temperature, agitation speed and the initial amount of FFA of oil, were studied in the presence of sulphuric acid as catalyst at concentration of 1%-w. The experimental results show that the esterification process could lead to a practical and cost effective FFA removal unit in front of typical oil transesterification for biodiesel production.Keywords: CPO off grade, esterification, free fatty acid
Co-Authors Adisalamun Adisalamun Alhamidi Yusran, Alhamidi Andesta Yulanda Anwar Fuadi Anwar Fuadi, Anwar Arief Fatanen, Arief Arifiansyah, Vinno Cut Erika Cut Meurah Rosnelly Darusman Darusman Desy Wulandari desy wulandari Febriana, Tika Thalia Hidayati Hidayati Hidayati Hidayati Kurniasih, Eka Lancy Maurina, Lancy Mahidin Mahidin Mahlinda Mahlinda, Mahlinda Marwan Marwan Mauliza, Nadia Putri Normalina Arpi Novia Mehra Erfiza Novia Mehra Erfiza Pocut Nurul Alam Rahmi Rahmi Ryan Moulana Satriana Satriana Satriana Satriana Sri Hartuti Sri Hartuti Suriaini, Nanda Tika Thalia Febriana Yulanda, Andesta