N
Norimichi Takenaka
Researcher at Osaka Prefecture University
Publications - 147
Citations - 3029
Norimichi Takenaka is an academic researcher from Osaka Prefecture University. The author has contributed to research in topics: Aqueous solution & Nitrite. The author has an hindex of 32, co-authored 141 publications receiving 2668 citations. Previous affiliations of Norimichi Takenaka include Applied Materials & University College Cork.
Papers
More filters
Journal ArticleDOI
Ultrasound-assisted production of biodiesel fuel from vegetable oils in a small scale circulation process.
TL;DR: The objective of this work was to produce biodiesel satisfying the biodiesel-fuel standards of low energy consumption and material savings.
Journal ArticleDOI
Acceleration Mechanism of Chemical Reaction by Freezing: The Reaction of Nitrous Acid with Dissolved Oxygen
Norimichi Takenaka,Akihiro Ueda,Tohru Daimon,Hiroshi Bandow,and Takaaki Dohmaru,Yasuaki Maeda +5 more
TL;DR: In this article, a detailed study on the acceleration mechanism of the above-mentioned oxidation was performed at pH values between 3.0 and 5.6 at various freezing rates, by different freezing methods, and with and without additional salts.
Journal ArticleDOI
A two-step continuous ultrasound assisted production of biodiesel fuel from waste cooking oils: a practical and economical approach to produce high quality biodiesel fuel.
Le Tu Thanh,Le Tu Thanh,Kenji Okitsu,Yasuhiro Sadanaga,Norimichi Takenaka,Yasuaki Maeda,Hiroshi Bandow +6 more
TL;DR: The FAME yield was extremely high even at the short residence time of the reactants in the ultrasonic reactor, and the total amount of time required to produce biodiesel was 15h.
Journal ArticleDOI
Acceleration of the rate of nitrite oxidation by freezing in aqueous solution
TL;DR: In this paper, it was shown that the oxidation of nitrite by dissolved oxygen to form nitrate, which is a very slow process in solution, is accelerated markedly when it takes place in a solution undergoing freezing.
Journal ArticleDOI
Acoustic multibubble cavitation in water: A new aspect of the effect of a rare gas atmosphere on bubble temperature and its relevance to sonochemistry.
TL;DR: Experimental evidence is shown for the first time experimental evidence that the bubble temperature induced by a high frequency ultrasound is almost the same among different rare gases and the chemical efficiency is in proportion to the gas solubility of rare gases, which would be closely related to the number of active bubbles.