eprintid: 8782
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/00/87/82
datestamp: 2023-11-09 16:20:42
lastmod: 2023-11-09 16:20:42
status_changed: 2023-11-09 16:13:31
type: article
metadata_visibility: show
creators_name: Chuah, L.F.
creators_name: Klemeš, J.J.
creators_name: Yusup, S.
creators_name: Bokhari, A.
creators_name: Akbar, M.M.
creators_name: Chong, Z.K.
title: Kinetic studies on waste cooking oil into biodiesel via hydrodynamic cavitation
ispublished: pub
keywords: Activation energy; Biodiesel; Catalysts; Energy efficiency; Esters; Fluid dynamics; Hydrodynamics; Kinetic parameters; Kinetics; Mass transfer; Methanol; Oils and fats; Rate constants; Synthetic fuels, Biodiesel production; Catalyst concentration; Environmental-friendly; Hydrodynamic cavitations; Mechanical stirring; Operating parameters; Preexponential factor; Reaction temperature, Cavitation
note: cited By 82
abstract: Development of cleaner biodiesel production related to hydrodynamic cavitation of methyl ester synthesis from sustainable waste cooking oil via alkali-catalysed transesterification is gaining importance due to considerable lower energy requirement and time. The effects of the oil to methanol molar ratio (1:4�1:7), catalyst concentration (0.5�1.25 wt ) and reaction temperature (50�65 °C) have been studied in a hydrodynamic cavitation and mechanical stirring system. Highest conversion of 98 was achieved under optimum conditions of 1:6 M ratio of oil to methanol, 1 wt  potassium hydroxide as alkali catalyst, 60 °C and 15 min reaction time. It has been observed that yield efficiency and reaction time were 833 higher and 600 shorter using hydrodynamic cavitation compared to mechanical stirring. Triglycerides conversion obeys pseudo-first order mechanism. The kinetic parameters of hydrodynamic cavitation and mechanical stirring were calculated, where the reaction rate constants were 0.238 and 0.031 min�1, activation energies were 89.7 and 92.7 kJ/mol and the pre-exponential factors were 2.623 � 10�13 and 1.120 � 10�13 min�1. Hydrodynamic cavitation was 1.8 fold more energy efficient and 4.6 fold lower feedstock used per produced product than mechanical stirring in biodiesel production. In conclusion, waste cooking oil methyl ester produced via hydrodynamic cavitation proved to be time saving and energy efficient compared to mechanical stirring. This makes the process more environmental friendly using hydrodynamic cavitation. © 2016 Elsevier Ltd
date: 2017
publisher: Elsevier Ltd
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85002969887&doi=10.1016%2fj.jclepro.2016.06.187&partnerID=40&md5=183d6ca2531828d9e430dc17e13e1e98
id_number: 10.1016/j.jclepro.2016.06.187
full_text_status: none
publication: Journal of Cleaner Production
volume: 146
pagerange: 47-56
refereed: TRUE
issn: 09596526
citation:   Chuah, L.F. and Klemeš, J.J. and Yusup, S. and Bokhari, A. and Akbar, M.M. and Chong, Z.K.  (2017) Kinetic studies on waste cooking oil into biodiesel via hydrodynamic cavitation.  Journal of Cleaner Production, 146.  pp. 47-56.  ISSN 09596526