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ITS » Paper and Presentation » Teknologi Proses - S2
Posted by dee@its.ac.id at 23/02/2015 23:33:00  •  784 Views


EKSPERIMEN DAN PEMODELAN PERPINDAHAN MASSA PADA EKSTRAKSI ASBUTON DENGAN PELARUT SOLAR

EXPERIMENT AND MODELING MASS TRANSFER OF THE ASBUTON EXTRACTION USING DIESEL OIL AS SOLVENT

Author :
LATHIFAH, HARISMA ( 2311201208 )




ABSTRAK

Penelitian ini bertujuan untuk mengembangkan model matematik berdasarkan Shrinking Core Model dan Progressive Conversion Model dalam proses agitated leaching mempelajari pengaruh parameter perpindahan massa dan variabel proses terhadap besarnya recovery bitumen dan membandingkan ketelitian permodelan antara 2 model yang digunakan. Pengembangan pemodelan dimodifikasi dengan factor partisi. Penelitian ini dilakukan secara teoritis dengan pengembangan model matematis proses ekstraksi asbuton dan secara eksperimen. Persamaan model diselesaikan secara numerik dengan menggunakan metode ODE 45. Dalam penelitian ini ukuran partikel divariasi -510 mesh -1016 mesh dan -1620 mesh kecepatan putar pengaduk divariasi 500 rpm 1000 rpm dan 1500 rpm. Waktu ekstraksi divariasi 10 20 30 40 dan 50 menit dan rasio asbutonsolar divariasi 11 115 dan 1 2. Kesimpulan dari penelitian ini adalah proses ektraksi asbuton dipengaruhi oleh kecepatan putar pengadukan N ukuran partikel asbuton Dp dan rasio solarasbuton. Hasil Ekperiment secara keseluruhan diperoleh recovery sebesar 1409 - 6307. recovery tertinggi terjadi pada kondisi operasi dengan kecepatan putar pengaduk 1000 rpm ukuran partikel -1610 mesh dan rasio asbutonsolar 12. Hasil simulasi menunjukkan bahwa pada Shrinking Core Model Diffusivitas Intra Particle De tidak menunjukkan pengaruh terhadap perubahan konsentrasi sebaliknya Eksternal Mass Transfer Coefficient kf memiliki pengaruh yang sangat signifikan terhadap hasil simulasi. Pada Progressive Conversion Model Eksternal Mass Transfer Coefficient kf dan Koeffisien Difusifitas Intra Partikel De mempunyai pengaruh yang sangat kecil terhadap perubahan konsentrasi dalam simulasi ini sebaliknya Internal Mass Transfer Coefficient kf memiliki pengaruh yang sangat signifikan terhadap hasil simulasi. Tingkat ketelitian yang diperoleh yaitu Progressive Conversion Model lebih baik bila dibandingkan dengan Shringking Core Model dengan perolehan error sebesar 1329 sedangkan untuk Shringking Core Model memiliki error sebesar 2383


ABSTRACT

The research aims to develop a mathematical model based on Shrinking Core Model and Progressive Conversion Model in agitated leaching process study the effect of mass transfer parameters and process variables on the recovery of bitumen and compare the modeling accuracy between the two models used. This research was carried out theoretically by developing a mathematical model of the asbuton extraction process and experimentally. The two model were modified using partition factor for bitumen saturated concentration. Model equations solved numerically using ODE 45. In this research the particle size was varied -5 10 mesh -10 16 mesh and -16 20 mesh rotational speed was varied 500 rpm 1000 rpm and 1500 rpm extraction time was varied 10 20 30 40 and 50 minutes and the ratio of asbutondiesel oil was varied 11 11.5 and 12. This research conclude that the asbuton extraction process was influenced significantly by rotation speed N asbuton particle size Dp and the ratio of asbutondiesel oil. The bitumen recovery obtained from this experiment among 14.09 - 63.07. The highest of bitumen recovery is occurred in operating conditions with stirrer rotational speed 1000 rpm particle size -16 10 mesh and asbutondiesel ratio is 12. Simulation results show that for Shrinking Core Model Intra Particle diffusivity De give unsignificantly effect the changes of concentration while External Mass Transfer Coefficient kf give significantly influence on the simulation results. For Progressive Conversion Model External Mass Transfer Coefficient kf and Intra Particle diffusivity De give unsignificantly effect the change of concentration while Internal Mass Transfer Coefficient kf give significantly influence on the simulation results. The accuracy level was obtained that the Progressive Conversion Model is better than the Shringking Core Model an error of Progressive Conversion Model is 13.29 and for Shringking Core model give an error of 23.83.



KeywordsAsbuton; Shrinking Core Model; Progressive Conversion Model; agitated leaching; Eksternal Mass Transfer Coefficient; Internal Mass Transfer Coefficient; Difusifitas intra partikel
 
Subject:  Absorbsi (Penyerapan)
Contributor
  1. Prof. DR. Ir. Ali Altway, MS
  2. DR. Ir. Susianto, DEA
Date Create: 04/02/2014
Type: Text
Format: pdf
Language: Indonesian
Identifier: ITS-paper-23121140006233
Collection ID: 23121140006233
Call Number: RTK 660.284 23 Lat e


Source
Paper and Presentationof Chemical Engineering, RTK 660.284 23 Lat e , 2015

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ITS-paper-23121140006233-36107.pdf




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