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ITS » Master Theses » Tek Sistem & Pengendalian Kelautan - S2
Posted by tondoindra@gmail.com at 24/10/2014 18:29:51  •  730 Views


ANALISA PENGARUH ANGKA IODIN PADA BIODIESEL DARI WASTE COOKING OIL TERHADAP LAJU KEAUSAN DAN TERBENTUKNYA CARBON DEPOSIT PADA KOMPONEN SMALL MARINE DIESEL ENGINE

THE EFFECT OF IODINE NUMBER ON BIODIESEL FROM WASTE COOKING OIL TO WARE RATE AND CARBON DEPOSIT FORMATION ON SMALL MARINE DIESEL ENGINE COMPONENTS

Author :
PRAMESTI, LELY  ( 4111204902 )




ABSTRAK

Konsumsi solar sebagai bahan bakar motor diesel yang semakin meningkat menyebabkan cadangan bahan bakar fosil semakin menipis dan akan menyebabkan terjadinya krisis energi. Sehingga penggunaan bahan bakar alternatif biodiesel kini marak dikembangkan. Mengingat Indonesia merupakan negara pengonsumsi minyak goreng maka limbah dari penggorengan tersebut atau yang disebut waste cooking oil diolah melalui proses transesterifikasi menjadi biodiesel. Tingginya kandungan asam tak jenuh dalam biodiesel yang dinyatakan dengan angka iodin meningkatkan risiko polimerisasi dalam pelumas motor diesel sehingga menyebabkan terjadinya penurunan viskositas dan diperkirakan dapat mempengaruhi ketahanan pada komponen-komponen utama motor diesel serta penyebab terjadinya carbon deposit. Oleh karena itu diperlukan uji ketahanan motor diesel selama 200 jam dengan variasi waktu dan pembebanan sesuai standar Engine Manufacturers Association EMA. Hasil pengujian produksi dan karakteristik WCO methyl ester didapatkan iodine number sebesar 548 g-I2100 g sedangkan pada standar SNI disebutkan angka iodin maksimal 115 g-I2100 g dan pada standar EN maksimal 120 g-I2100 g. Nilai hasil pengujian sangat jauh dibandingkan dengan syarat maksimumnya hal ini dikarenakan kualitas jelantah yang digunakan dalam produksi methyl ester masih jauh lebih bagus daripada jelantah yang sudah dipakai penggorengan berulang kali dan mengalami masa pengendapan yang cukup lama. Setelah dilakukan uji ketahanan dan engine check up dapat disimpulkan bahwa kandungan iodine pada biodiesel dari waste cooking oil sedikit menyebabkan terjadinya laju keausan serta terbentuknya carbon deposit pada komponen-komponen utama motor diesel. Hal ini diakibatkan karena kandungan angka iodin pada bahan bakar mudah teroksidasi dengan udara sekitar. Peluruhan unsur logam cukup parah terjadi pada journal bearing dan carbon deposit pada cylinder head sebesar 061 gram piston sebesar 100 gram exhaust valve sebesar 053 gram dan intake valve 017 gram.


ABSTRACT

Consumption of solar as a diesel engine fuel is increasing causing fossil fuel reserves in the market decreasing and will lead to an energy crisis. So the use of alternative fuels biodiesel now rife developed. Given that Indonesia is a country consuming cooking oil the waste from the frying process we called waste cooking oil is processed into biodiesel through transesterification process. The high content of unsaturated acid in biodiesel which is expressed by the number of iodine increases the risk of polymerization in the diesel engine oil causing a decrease viscosity influence the resistance of the main components of the diesel engine and the cause of the carbon deposit. Therefore we need the durability test engine for 200 hours with a variety of time and load in accordance with standard Engine Manufacturers Association EMA. The results of production and characteristics tests of the WCO methyl ester obtained the iodine number is 548 g-I2100 g while the figures mentioned SNI standard maximum iodine number is 115 g-I2100 g and the EN standard maximum iodine number is 120 g-I2100 g. The value of test results is very different compared to the SNI standard this is because the quality of the cooking oil that used in the production of methyl esters was much better than cooking oil that has been used many times and experienced a long period of deposition. After the durability test and engine check-up can be concluded that the iodine content of biodiesel from waste cooking oil causes slight wear rate and the formation of carbon deposits on the major components of diesel engine. This is caused the content of iodine in the fuel rate is easily oxidized by the surrounding air. Metallic element from engine part decay quite severe on journal bearing and carbon deposit on cylinder head is 061 gram piston 100 gram exhaust valve 053 gram and intake valve 017 gram.



Keywordsangka iodin; biodiesel; minyak jelantah; uji ketahanan
 
Subject:  Korosi
Contributor
  1. Ir. Aguk Zuhdi M. F, M.Eng., Ph.D.
  2. Dr. I Made Ariana, ST., MT.
Date Create: 01/08/2013
Type: Text
Format: PDF
Language: Indonesian
Identifier: ITS-Master-41003140000737
Collection ID: 41003140000737
Call Number: RTKe 623.872 36 Pra a


Source
Master Theses Of Naval Architechture and Ship Building Engineeing RTKe 623.872 36 Pra a, 2014

Coverage
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Copyright @2013 by ITS Library. This publication is protected by copyright and per obtained from the ITS Library prior to any prohibited reproduction, storage in a re transmission in any form or by any means, electronic, mechanical, photocopying, reco For information regarding permission(s), write to ITS Library




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  1.  ITS-Master-32963-4111204902-Abstract_id.pdf - 183 KB
  2.  ITS-Master-32963-4111204902-Abstract_en.pdf - 183 KB
  3.  ITS-Master-32963-4111204902-Conclusion.pdf - 183 KB




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