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INDONESIA
Seminar Nasional Teknik Kimia Kejuangan
Published by Universitas Pembangunan Nasional Veteran Yogyakarta
ISSN : -     EISSN : -     DOI : -
Core Subject : Science, Social, Engineering,
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Engineering Environmental Science
Prosiding Seminar Nasional Teknik Kimia Kejuangan adalah media online dari makalah yang telah diseminarkan pada acara Seminar Nasional Teknik Kimia “Kejuangan” (SNTKK). SNTKK merupakan agenda tahunan yang diselenggarakan oleh Program Studi Teknik Kimia FTI UPN ”Veteran” Yogyakarta. Seminar ini merupakan sarana komunikasi bagi para peneliti dari perguruan tinggi, institusi pendidikan, serta lembaga penelitian maupun industri, dalam mengembangkan teknologi kimia untuk pengolahan sumber daya alam Indonesia.
Arjuna Subject : -
Articles 588 Documents
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Aplikasi Bioleaching Dalam Pemisahan Logam dari Batuan Mineral Pyrite dengan Menggunakan Bakteri Thiobacillus ferooxidans dan Fungi Aspergillus niger Ronny Kurniawan
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2015: Prosiding SNTKK 2015
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

Pyrite (FeS2) is one of the types of sulphide minerals which are common in the nature. Many methods can be used to separate the metal content in pyrite, either chemical treatment, biological treatment, and physical treatment. This study generally aims to study the process of extracting metals Fe, Zn, and Al in the mineral pyrite using bioleaching process, and specifically aims to determine the effect of time and type of microorganisms based on the concentration and yield of the extraction and to study the effect of microorganisms on the selectivity of the metals extracted in the process of the mineral pyrite bioleaching. Parameters used are microorganisms volume (20% of the total volume of work), bioleaching temperature (35°C), the speed of stirrer (70 rpm) and time of bioleaching (10, 20, and 30 days); the type of the analyzed metal are Al, Zn, Fe; and the type of microorganism are Thiobacillus ferooxidans bacteria and Aspergillus niger fungi. The used analysis are AAS and ICP / MS. The result revealed that the time of bioleaching makes some effect on metal concentration in rafinat.The longer time of bioleaching can give the greater value on metal concentration in rafinat. The highest metal concentrations in the rafinat obtained at 759 ppm for the Al using a Thiobacillus ferooxidans bacteria. The highest yield in the rafinat obtained at 15,021% for the Zn using a Thiobacillus ferooxidans bacteria. Generally, Thiobacillus ferooxidans bacteria is better for extracting metals; Fe, Zn, and Al.
Adsorpsi Ion Mn(II) Pada Zeolit yang Disintesis dari Abu Dasar Batubara Termodifikasi Ditizon Riandy Putra
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2015: Prosiding SNTKK 2015
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

Adsorption characteristic of Mn(II) on zeolite synthesized from bottom ash with alkaline hydrothermal conditions loaded with dithizone have been examined. The parameters studied includes effect of pH, contact time, initial concentrations and temperature of Mn(II) by batch experiments. The raw and modified samples were characterized by X-ray fluorescence (XRF), X-ray diffraction (XRD), Fourier transformation infra red (FT-IR) and Surface area analyzer (SAA) and used for the removal of Mn(II) from aqueous solution. This research shows Si and Al contents of the bottom ash analysed by XRF spectrometry dominant were used for the alkaline hydrothermal conversion of the bottom ash compounds into zeolite with range SiO2/Al2O3 ratio obtained from 1 to 5. The results of XRD and FTIR showed that the activation with reflux of bottom ash by alkali hydrothermal process can produce a material which has a similar structure zeolite (zeolite-like). Hydrothermal product consists of a mixture of zeolite (zeolite Y, zeolite Na-P and zeolite X) and sodalite crystals at temperatures of 100 °C for 24 hours. Hydrothermal product showed specific IR absorption zeolite at wavenumber 300-1250 cm-1and zeolite modified dithizone showed absorption -NH and –SH at wavenumber 1496,76 and 2461,17 cm-1. The results SAA showed that with addition dithizone lowering the specific surface area of zeolite from 160,262 m²/g to 69,609 m²/g. Results of study show that adsorption of Mn(II) reaches its maximum values at pH 6 for zeolite and pH 8 for zeolite modified dithizone, respectively. The adsorption kinetics based on the pseudo-second-order rate equation indicates that the rate limiting step involving a chemical reaction. The adsorption rate constants for zeolite synthesis -0,014g/mg.min-1and for the zeolite modified dithizone 0,0204g/mg.min-1. Based on the Langmuir equation, the maximum adsorption capacity (qmax) synthetic zeolite of 2.63x10-4mol/g and zeolite modified dhitizone 2.88x10-4mol/g. Adsorption equilibrium constant for the synthetic zeolite 0,742 mg/L and for zeolite modified dithizone 2,625 mg/L. The negative ΔH and ΔS indicate an exothermic and spontaneous process. But value of ΔG is positive, which indicates that the reaction is not spontaneous. So, adsorption using two adsorbents takes place spontaneously at a lower temperature. In general, the ability of dithizone-loaded zeolite to adsorb Mn(II) is better than does the unmodified one.
Pengaruh Penambahan Diethylene Glycol Terhadap Gas Hasil Fermentasi Limbah Peternakan Sapi Dusun Ngentak, Desa Poncosari, Kecamatan Srandakan, Kabupaten Bantul, DIY Hongki Budi Prasetyo
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2015: Prosiding SNTKK 2015
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

This study was conducted to determine the effect of the use of diethylene gycol to reduce the water content of the gas produced from waste fermentation of cows cattle in Ngentak, Poncosari Village , Srandakan , Bantu . The steps will be done in this research are to conduct a site survey and gas testing samples using diethylene glycol with a concentration of 90 %. Testing is done by spraying diethlylene glycol into the gas flow through the gas flow pipe connection manually. From the test results indicate that the diethylene glycol can be used to reduce the water content in the gases from waste fermentation of the dairy farms.
The Influence Of Pyrolysis Temperature And Time To The Yield And Quality of Rubber Fruit (Hevea brasiliensis) Shell Liquid Smoke Haris Fadillah
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2015: Prosiding SNTKK 2015
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

Rubber development in South Kalimantan is growing rapidly. In 2011, rubber plantations have reached anarea of 226.706 ha. Rubber plantation produces waste in  the form of unprocessed fruit shells. One of the ways to increase the value of rubber fruit shells waste wasby pyrolysis processing. Pyrolysis produced products such as liquid smoke, tar, and charcoal. The purpose of this study was to analyze the effect of pyrolysis temperature and time to the yield and quality of rubber fruit shellliquid smoke and determine the best treatment of the pyrolysis liquid smoke processing. Pyrolysis process of rubber fruit shell was processed at 200°C, 300°C, 400°C for 1 and 2 hours. Pyrolysis reactor that used was 10 kg capacity. The pyrolysis at 200 °C for 2 hour was the optimum process condition to produce the best liquid smoke with 36.05±0.90 % (w/w) of liquid smoke yield, 3.48 ±0.22 % (w/w) of tar yield, 15,35±1,16 % (w/w) of weight lo ss, and 45.13±0.38 % (w/w) of charcoal yield, and t he quality of the liquid smoke were pH of 2.495±0.050, acid le vels 13.71±0.51 %, total phenols 1.47±0.03 %, and c olor levels 5R 3/10.
Pengolahan Limbah Plastik Kemasan Multilayer Ldpe (Low Density Poly Ethilene) dengan Menggunakan Metode Pirolisis Microwave SR Juliastuti
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2015: Prosiding SNTKK 2015
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

Increased energy consumption and waste generation are two problems that rise due to economic and population growth. To overcome the problem, especially plastic waste, environmental experts and scientists from various disciplines have conducted various studies and actions. One way is to degrade the Low Density Polyethylene plastic waste multilayer packaging by microwave pyrolysis. The purpose is to determine the effect of temperature and time when degrading the LDPE plastics waste by microwave pyrolysis. The processes done with operating condition of pressure at 1 atm and nitrogen flowed at 0.5 L / min in glass reactor. Samples are used as much as 60 grams of LDPE plastics. The sample is heated to a temperature of 250, 350, and 500°C it’s maintained at variable time for 10, 30, and 60 minutes. Liquid products were analyzed by gas chromatography-mass spectrometry (GC-MS), non-condensable gas was analyzed by gas chromatography (GC), raw material samples were analyzed using Fourier Transform Infrared (FTIR) and calculating the yield of liquid products, solid and concentration of gas. From the experimental results are obtained that microwave pyrolysis best operating conditions is at 500oC of 60 minutes with 4.67% yield of solid, 23.65% liquid, and concentration of CH4 30.41%.
Dinamika Komposisi pada Sistem Tangki Pencampur 10 Liter Yulius Deddy Hermawan
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2012: Prosiding SNTKK 2012 (Arsip)
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

The liquid concentration dynamic behavior of a 10 L mixing tank has been studied experimentally. Tank with volume of 10 liter are designed and arranged for experimentation in laboratory. The tank has two input streams, stream-1 is the water-stream with its volumetric rate of f1 [cm3/sec] and stream-2 is salt solution with its volumetric rate of f2 [cm3/sec] and salt composition of c2 [gr/cm3]. Since the tank is designed overflow, the liquid volume in tank is always constant. In this work, the mass disturbance load has been made based on step increase and decrease. Those disturbance include the changes of the flow-rate input (f1 and f2) and the concentration of the input stream (c2). The dynamic behavior of mixing tank system has also been explored. As can be seen from our investigation in laboratory,the mixing tank with volume capacity of 10 liter produces a stable responce. Furhtermore, the open loop dynamic simulation using computer programing is also done, and its simulation result are compared with the experiment data from laboratory. The developed mathematical model of the mixing tank system has been solved analytically by laplace transform. The trends of simulation results are quite similar with those in our experiment results.
Dinamika Suhu pada Sistem Tangki-Seri-Tak-Berinteraksi dengan Arus Recycle Hermawan Yulius Deddy
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2010: Prosiding SNTKK 2010
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

This research studies the temperature dynamic behavior of non-interacting-tank (NIT) with recycle-stream which is frequently used in industries. Two tanks with volume of 25 liters are designed and arranged in series for experimentation in laboratory. Part of liquid from Tank-2 is recycled back to the Tank-1. In this work, the liquid volume of both Tank-1 and Tank-2 are remained at constant value. The heat disturbance load has been made based on both step increase and decrease. Those disturbances include the changes of temperature in input (T i) and recycle (TR) streams. The temperature dynamic behavior of NIT system has also been explored. As can be seen from our investigation in laboratory, both of Tank-1 and Tank-2 in NIT system produce a stable response to the disturbance change in temperature of the input and recycle streams. Furthermore, dynamic simulation using computer programming is also done, and its simulation results are compared with the experiment data from laboratory. The developed mathematical model of the NIT system is solved numerically. Such mathematical model is rigorously examined in Scilab software environment. This research also shows that the trends of temperature dynamic simulation results are quite similar with those in our experiment results.
Dinamika Level Cairan pada Sistem Tangki-Seri-Tak-Berinteraksi dengan Arus Recycle Hermawan Yulius Deddy
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2010: Prosiding SNTKK 2010
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

Dinamika Proses pada Sistem Pemanas Tangki Berpengaduk dengan Arus Bypass Yulius Deddy Hermawan
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2014: PROSIDING SNTKK 2014
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

The liquid concentration and temperature dynamic behavior of a stirred tank heater with bypass stream (STHB) has been studied experimentally. A cylinder tank was designed and arranged for experimentation in laboratory. The tank has two input streams, stream-1 (salt solution with its volumetric rate of f1 [cm3/sec], salt concentration of cg1 [gr/cm3]) and stream-2 (water-stream with its volumetric rate of f2 [cm3/sec]). A part of the stream-1 was bypassed (f3 [cm3/sec]) and mixed with the output stream of the tank (f5 [cm3/sec]). The electric heater was employed for heating liquid in the tank. Since the tank was designed overflow, the liquid volume in tank was always constant. In this work, the mass and thermal disturbance load has been made based on step increase and decrease. Those disturbance included the changes of the bypass volumetric rate (f3), the water volumetric rate (f2), and the electric heat (qe). The dynamic behavior of the STHB has also been explored. As can be seen from our investigation in laboratory, the STHB produced a stable response. Furthermore, the open loop dynamic simulation using computer programing was also done, and its simulation results were compared with the experiment data from laboratory. The developed mathematical model of the STHB has been solved numerically. Scilab software was chosen to examine such mathematical model. This study also revealed that the trends of simulation results were quite similar with those in our experiment results.
Simulasi Model Jaringan dan Fasilitas Permukaan Injeksi CO2 Sistem Terpusat pada Lapisan F Lapangan J Yulius Deddy Hermawan; wibowo wibowo
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2013: Prosiding SNTKK 2013 (Arsip)
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

The Study of CO2 injection to enhance oil recovery through several stages before implementation on the pilot and full scale projects in the field had been done succesfully. The final stage of this study has been made by modeling of network and CO2 injection surface facilities that can be implemented in J Field. The developed model which is run by production simulator gave significant results both on the re-pressurized stage and CO2 flooding stage. This study showed that the implementation of CO2 injection could be run well. With the model validation through static and dynamic run, this study also reavealed that the network model and surface facilities could work properly.

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