The evolution of a single droplet water-in-palm oil derived biodiesel emulsion leading to micro-explosion

Palm oil methyl ester is blended with diesel oil as a commercial diesel product in Malaysia, known as biodiesel B10. Biodiesel mixed with water proved to reduced simultaneously both the particulate matter and NOx during combustion. Emulsified biodiesel also caused a secondary atomization due to micr...

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Main Authors: Syed Masharuddin, S.M., Abdul Karim, Z.A., Meor Said, M.A., Amran, N.H., Ismael, M.A.
Format: Article
Institution: Universiti Teknologi Petronas
Record Id / ISBN-0: utp-eprints.28822 /
Published: Elsevier B.V. 2022
Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85108783773&doi=10.1016%2fj.aej.2021.06.043&partnerID=40&md5=e47b481772b710d275f69b76ce8925b0
http://eprints.utp.edu.my/28822/
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spelling utp-eprints.288222022-03-17T02:31:36Z The evolution of a single droplet water-in-palm oil derived biodiesel emulsion leading to micro-explosion Syed Masharuddin, S.M. Abdul Karim, Z.A. Meor Said, M.A. Amran, N.H. Ismael, M.A. Palm oil methyl ester is blended with diesel oil as a commercial diesel product in Malaysia, known as biodiesel B10. Biodiesel mixed with water proved to reduced simultaneously both the particulate matter and NOx during combustion. Emulsified biodiesel also caused a secondary atomization due to micro-explosion of the fuel droplets, which is beneficial in improving combustion efficiency. The main factors and events leading to micro-explosion for palm oil derived biodiesel emulsified fuel has yet to be made available in the open literature. Hence, this study aimed to visualize the droplet evolution to micro-explosion of single droplet when heated. A single droplet was placed on the hot surface of a hotplate maintained at 500 °C and the droplet evolution time leading to micro-explosion were capture using a high-speed camera. The study found that all samples of the emulsified fuels produced micro-explosions in four distinct stages. The droplet underwent from a homogenous emulsion, turning from milky color to being transparent during the separation stage, volume expansion during the bubble growth stage, intense coalescence and puffing stage and finally micro-explosion stage. Larger water particles size and higher hydrophilic-lipophilic balance values are the main factors that caused shorter time leading to micro-explosion of droplets. © 2021 THE AUTHORS Elsevier B.V. 2022 Article NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85108783773&doi=10.1016%2fj.aej.2021.06.043&partnerID=40&md5=e47b481772b710d275f69b76ce8925b0 Syed Masharuddin, S.M. and Abdul Karim, Z.A. and Meor Said, M.A. and Amran, N.H. and Ismael, M.A. (2022) The evolution of a single droplet water-in-palm oil derived biodiesel emulsion leading to micro-explosion. Alexandria Engineering Journal, 61 (1). pp. 541-547. http://eprints.utp.edu.my/28822/
institution Universiti Teknologi Petronas
collection UTP Institutional Repository
description Palm oil methyl ester is blended with diesel oil as a commercial diesel product in Malaysia, known as biodiesel B10. Biodiesel mixed with water proved to reduced simultaneously both the particulate matter and NOx during combustion. Emulsified biodiesel also caused a secondary atomization due to micro-explosion of the fuel droplets, which is beneficial in improving combustion efficiency. The main factors and events leading to micro-explosion for palm oil derived biodiesel emulsified fuel has yet to be made available in the open literature. Hence, this study aimed to visualize the droplet evolution to micro-explosion of single droplet when heated. A single droplet was placed on the hot surface of a hotplate maintained at 500 °C and the droplet evolution time leading to micro-explosion were capture using a high-speed camera. The study found that all samples of the emulsified fuels produced micro-explosions in four distinct stages. The droplet underwent from a homogenous emulsion, turning from milky color to being transparent during the separation stage, volume expansion during the bubble growth stage, intense coalescence and puffing stage and finally micro-explosion stage. Larger water particles size and higher hydrophilic-lipophilic balance values are the main factors that caused shorter time leading to micro-explosion of droplets. © 2021 THE AUTHORS
format Article
author Syed Masharuddin, S.M.
Abdul Karim, Z.A.
Meor Said, M.A.
Amran, N.H.
Ismael, M.A.
spellingShingle Syed Masharuddin, S.M.
Abdul Karim, Z.A.
Meor Said, M.A.
Amran, N.H.
Ismael, M.A.
The evolution of a single droplet water-in-palm oil derived biodiesel emulsion leading to micro-explosion
author_sort Syed Masharuddin, S.M.
title The evolution of a single droplet water-in-palm oil derived biodiesel emulsion leading to micro-explosion
title_short The evolution of a single droplet water-in-palm oil derived biodiesel emulsion leading to micro-explosion
title_full The evolution of a single droplet water-in-palm oil derived biodiesel emulsion leading to micro-explosion
title_fullStr The evolution of a single droplet water-in-palm oil derived biodiesel emulsion leading to micro-explosion
title_full_unstemmed The evolution of a single droplet water-in-palm oil derived biodiesel emulsion leading to micro-explosion
title_sort evolution of a single droplet water-in-palm oil derived biodiesel emulsion leading to micro-explosion
publisher Elsevier B.V.
publishDate 2022
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85108783773&doi=10.1016%2fj.aej.2021.06.043&partnerID=40&md5=e47b481772b710d275f69b76ce8925b0
http://eprints.utp.edu.my/28822/
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score 11.62408

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