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ITS » Undergraduate Theses » Teknik Kimia
Posted by dewi007 at 08/01/2010 11:06:10  •  3331 Views


SIMULASI SINTESA ALUMINIUM NANOPARTIKEL YANG MELIBATKAN NUKLEASI KOAGULASI DAN PERTUMBUHAN PERMUKAAN DENGAN METODE NODAL

SIMULATION OF ALUMINUM NANOPARTICLE SYNTHESIS INVOLVING NUCLEATION COAGULATION AND SURFACE GROWTH BY NODAL METHOD

Author :
Auliawan, Andi  ( 2302100063 )
Syah, Fajri Abdurrakhman




ABSTRAK

Skripsi kami bertujuan untuk mempelajari pengaruh kondisi operasi terhadap distribusi ukuran partikel aluminium dengan proses evaporasi-kondensasi dengan simulasi. Kondisi operasi yang dipelajari meliputi suhu awal proses tekanan operasi laju pendinginan dan waktu proses. Mekanisme pembentukan partikel yang diperhitungkan adalah nukleasi koagulasi dan pertumbuhan permukaan Persamaan untuk memprediksi distribusi ukuran partikel adalah persamaan dinamika umum yang diselesaikan dengan metode nodal. Dalam metode ini ukuran partikel dibagi menjadi node-node yang menjangkau seluruh volume partikel.Persamaan dinamika umum untuk aerosol yang bergantung pada waktu diintegrasikan dengan metode numerik Runge-Kutta menggunakan bahasa pemrograman Matlab 7.0. Hasil simulasi yang didapat menunjukkan bahwa semakin lama waktu proses konsentrasi jumlah partikel berukuran 8x10-8 semakin berkurang tetapi pada ukuran partikel 8x10-8 m tidak terpengaruh oleh waktu. Semakin lama waktu proses maka ukuran partikel yang terbentuk semakin seragam. Pada laju pendinginan yang semakin besar didapatkan bahwa untuk partikel berukuran 7x10-8 m konsentrasi jumlahnya semakin kecil sedangkan untuk partikel berukuran 7x10-8 m laju pendinginan tidak berpengaruh terhadap distribusi ukuran partikel . Semakin besar laju pendinginan ukuran partikel yang terbentuk semakin seragam. Pada tekanan 0.5 0.6 dan 0.7 atm modus ukuran partikel yang dihasilkan berukuran 1.3x10-7 m tetapi jumlahnya makin menurun yaitu 8.7x1013 7.1x1013 5.6x1013 m3 berturut-turut. Sedangkan pada tekanan 0.8 atm modus ukuran partikel yang dihasilkan sebesar 1.6x10-7 m dengan jumlah konsentrasi 4.4x1013 m3 Tekanan yang semakin rendah menghasilkan ukuran partikel yang semakin seragam. Pada suhu awal proses 1900 1800 1700 K modus ukuran partikel yang terbentuk berukuran 2.1x10-7 1.3x10-7 dan 9.9x10-8 m secara berurutan. Sedangkan untuk suhu awal proses 1400 K modus ukuran partikel yang terbentuk berukuran 1.3x10-7 dan 7.8x10-8 m. Semakin rendah suhu awal proses berpengaruh pada semakin seragamnya ukuran partikel yang terbentuk


ABSTRACT

This final project has a purpose to learn effect of operating condition toward particle size distribution by simulation with evaporation-condensation process. Operating condition that have been learnt consist of iniate temperature of process pressure operation cooling rate and time of process. Mechanism of particle growth has a three step that is nucleation coagulation and surface growth. We use a general dynamic equation as time function to predict particle size distribution. Nodal method is equation to solve this problem. By this method particle size devide into several nodes intend to all of volume particles. General dynamic equation for the aeorosol system will integrate by Runge Kutta numerical method. Programming language that have been used is Matlab 7.0 From result of simulation showed that longer time of process smaller the amount of particle concentration measures less than 8x10-8 m in opposite at particle more than 8x10-8 m independent by time. Longer time of process caused a uniform particles. Bigger cooling rate of process smaller the amount of particle concentration measures less than 7x10-8 m but at particle more than 7x10-8 m particle size distribution independent by cooling rate. Bigger cooling rate of process particle size become uniform. At pressures 0.5 0.6 dan 0.7 atm modus of particle size measures 1.3x10-7 m but the population became small there are 8.7x1013 7.1x1013 5.6x1013 m3. While at pressure 0.8 atm modus of particle size measures 1.6x10-7 m and the population number in 4.4x1013 m3. Smaller pressure of process caused a uniform particles. At initial temperature process 1900 1800 1700 K modus of particle size measures 2.1x10-7 1.3x10-7 dan 9.9x10-8 m. But At initial temperature process 1400 K modus of particle size measures 1.3x10-7 dan 7.8x10-8 m. Smaller temperature of process influence particle growth became uniform.



Keywordskoagulasi ; nukleasi ; pertumbuhan permukaan simulasi ; nanoaluminium
 
Subject:  Alumunium
Contributor
  1. Dr. Ir.Heru Setyawan, M.Eng
Date Create: 08/01/2010
Type: Text
Format: pdf.
Language: Indonesian
Identifier: ITS-Undergraduate-3100006027613
Collection ID: 3100006027613
Call Number: RSK 669.722 Aul s


Source
Undergraduate Theses of Chemical Engineering, RSK 669.722 Aul s, 2006

Coverage
ITS Community Only

Rights
Copyright @2006 by ITS Library. This publication is protected by copyright and permission should be obtained from the ITS Library prior to any prohibited reproduction, storage in a retrievel system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permission(s), write to ITS Library




[ Download - Open Access ]

  1.  ITS-Undergraduate-7223-2302100063-SIMULATION OF ALUMINUM NANOPARTICLE SYNTHESIS INVOLVING NUCLEATION, COAGULATION, AND SURFACE GROWTH BY NODAL METHOD.pdf - 20 KB
  2.  ITS-Undergraduate-7223-2302100063-kesimpulan.pdf - 30 KB




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