What is a fine bubble？
"Fine bubble" is the scientific terminology of tiny bubble officially defined by the International Organization for Standardization (ISO). There are two types of fine bubbles, which are classified into "microbubble" with a diameter of 1 micron or more and less than 100 microns and "ultrafine bubble" smaller than the microbubbles. Since both the microbubbles and the ultrafine bubbles have different characteristics, we are being used all over the world depending on the unique application.
What's New
4th International Symposium on Multiscale Multiphase Process Enginnering will be held at H4 Hotel Berlin Alexanderplatz in Germany.
Prof. Dr. Terasaka will present "Batch generation of ultrafine bubbles in water by rapid condensation of steam and gas mixture".
Associate Prof. Dr. Fujioka will present "Effect of various operating conditions on the internal circulation of liquid-liquid slug flows".
N. Ikeda (D2) will present "Continuous measurement of rheological properties of non-Newtonian food fluids by using a pressure difference".
R. Asada (M2) will present "Effect of Viscosity on Microbubble Generation from a Horizontally Vibrating Nozzle".
M. Iwasaki (M2) will present "Synthesis of silica fine particles using liquid-liquid slug flow in a mini channel".
D. Nomoto (M2) will present "Continuous crystallization of glycine using milli-scale gas liquid slug flow".
E. Fujita (M1) will present "Optical evaluation for ultrafine bubble cleaning of contamination in a flow channel".
M. Ishimaru (M1) will present "Ultrafine bubble concentrating in residual water by evaporation or slow-progressive freezing".
K. Taguchi (M1) will present "Continuous generation of ultrafine bubble water by rapid condensation of steam and non-condensable gas mixture".
Dr. Fujioka presented "Prediction of the Bubble Size Distribution and the Mass Transfer Coefficient for an Aerated Stirred Tank" as poster in "The 10th International Symposium on Mixing in Industrial Process" which is held as a virtual conference.
Prof. Terasaka wrote a book entiled "Ultrafine Bubbles" with Dr. Yausi, Dr. Kanematsu and Dr. Aya from Jenny Stanford Publishing.
5th International Symposium on Application of High-voltage Plasma Micro/Nano (Fine) Bubbles to Agriculture, Aquaculture and Food Safety held on the web, Prof. Terasaka presented "Advances in basic treatment technology for ultrafine bubble water - Storage, transportation, concentration, dilution and removal -" as the Plenary Speaker.
co-authored paper by the DFG Fine Bubble Project Team (TUHH and Terasaka Lab.) ｗas selected for "TOP DOWNLOADED PAPER 2018-2019" by Chimie Ingenieur Technik of Wiley.
D. Ohde, B, Thomas, S, Matthes, Z. Percin, C. Engelmann, P. Budenheim, K. Terasaka, M. Schlueter, A. Liese:
"Fine Bubble-based CO2 Capture Mediated by Trithanoamine Coupled to Whole Cell Biotransformation"
Institute of Multiphase Flows of TUHH, Prof. Terasaka presented "Japanese-German Joint Research on MMPE."
Okinawa Colloids2019でS. Tanaka （D2) presented "Effect of storage temperature on the colloidal stability of ultrafine bubbles in pure water."
Second International Workshop on the Applications of Fine and Ultrafine Bubbles, Prof. Terasaka presented "An Intoroduction to Fine Bubble Applcations", K, Yamazaki（M2) presented "Ultrafine bubble formation by spray injection from pressurized container", Y. Anruse（Ｍ１） presented "Separation, dilution and concentration of ultrafine bubbles in water", S. Harada（M2) presented "Ultrafine Bubble Stability During Aquaculture Nutrient Distribution."
69th Canadian Chemical Engineering Conference S. Harada（M2) presented "Ultrafine Bubble Stability During Aquaculture Nutrient Distribution."
18th Asian Pacific Confederation of Chemical Engineerin Congress(APCChE2019) R. Aoki （M2) presented "Flow pattern analysis of self-induced sloshing due to bubble flow in a rectangular vessel." Y. Noguchi(M2) presented "Experimental investigation of gas slug shrinking behaviourinside a microchannel", R. Nishio(M2) presented "Inhibitory effect on oxygen diffusion in hydrogel including microbeads."
Matthes Simon（TUHH) presented "Influence of Microbubble Aeration on Hydrodynamics and Mass Transfer in a Lab Scaled Stirred Tank Reactor."
2nd June 2019 in Guilin, China, 14th International Conference on Gas-Liquid and Gas-Solid-Liquid Reactor Engineering (GLS-14) will be held.
At Session 4A: Heat and Mass Transfer in Multiphase Systems, S. Tanaka（D2) will present "(Paper 167) Mass Transfer from Freely Rising Microbubbles in Aqueous Solutions of Surfactant or Salt."
at National Taiwan University in Taipei, 6th International Workshop on Process Intensification was held.
K. Mizuno(M2) presented "Dissolution Behavior of a Single MicrobubbleAccumulating Dissolved Gas Around Its Surface," M. Nakamura(M2) presented "Generation of Ultrafine Bubbles by Ultrasonic Irradiation into Water Dissolving Air," M. Baba(M2) presented "Hydrogen Microbubble Generation by Fast Dissolution of Accompanying Ammonia Gas."
26 Oct 2018 at Keio Universityo, Prof. Dr. Terasaka will be presented "Measurement of Fine Bubbles and Progress of Fine Bubble Applications" as a prenery lecture.
21 Sep 2018 at Kagoshima University, Prof .Dr. Terasaka presented "Welcome Speech and Latest Trend of Fine Bubble Technology."
Dalhousie University, NS, Canada, First Workshop on the Applications of Fine and Ultrafine Bubbles was held.
Prof. Terasaka, Dr. Fujioka , S. Tanaka(D1), K. Mizuno(M2)、R. Hiroi(M2), S. Harada(M2), Y. Noguchi(M2/TUHH) and T. Shomura(M1/DAL) will present.
3rd International symposium on Application of High-voltage, Plasma & Micro/Nano Bubble (Fine Bubble) to Agriculture and Aquaculture (3rd ISHPMNB) in Iwate University, Riho Sekimizu Hiroi(M2) presented "Promotion of Barley Germination for German Beer Brewing with Ultrafine Bubble Wate."
Chiba Institute of Technology, Prof .Dr. Terasaka presented "Development and International Standrdization of Fine Bubble Technology" as a prenery lecture
The University of Tokyo, Prof. Dr. Terasaka presented "Fine Bubble Science Consortium of Universities in Japan, Germany and Canada" as a prenery lecture.
10th World Congress of Chemical Engineering（WCCE2017） in Barcelona, Spain, Mt. T. Tsuji presented "Predicting bubble size distributions in gas-liquid stirred tank by using breakage model for single bubble" as a poster.
Mr. Y. Noguchi presented "Development of large-capacity DDS carriers releasing by heat for industrial process" as an oral.
14th International Conference on Multiphase Flow in Industrial Plant （MFIP2017）in Desenzano del Garda in Italy, Mr. K. Sudo presented "Contribution of Oxygen Absorption from Free Surface in Aeration Tank" and Dr. K. Shibata (Sanki Industry) presented "Oxygen Transfer and Gas Holdup of an Aeration Tank,"
13th International Conference on Gas–Liquid and Gas–Liquid–Solid Reactor Engineering (GLS-13) in Crawne Plaza Hotel La Palace, Brussels, Belguim, Mr. H. Yoda presented "Separation of ultrafine bubbles from water by slow freezing-melting" as a poster.
Mr. S. Tanaka presented "Mass transfer from a fast shrinking microbubble containing N2 and/or O2 into water" as an oral session.
Mr. T. Shigehisa presented "Mass transfer during a gas dissolution process around a stationary single microbubble" as an oral session.
The news of MMPE2017 in Toyama, Japan, was released in the web news of DFG Tokyo Office.
Prof. Terasaka became a Visiting Professor on Dalhousie University in Halifax, NS, Canada
Japanese-German Mini-Seminar in Yagami Campus of Keio University, Prof. Schlueter of TUHH in Hamburg and Prof. Krull of TUBS in Braunschweig had lectures.
3rd Internatoinal Symposium on Multiscale Multiphase Process Engineering in Toyama, Japan, Prof. Terasaka organized as a Chair.
Assistant Prof. Fujioka has a lecture "Prediction of Pressure Drop of Liquid-Liquid Slug Flow in Milli-channels." Mr. S. Tanaka presented "Fast mass transfer from a single shrinking microbubble into water" as a poster, and then he received The Outstanding Poster Award."
Scientific TV program "Ultrafine bubbles which are impressive from Japan" is broadcasted in NHK World.
Prof Terasaka have a seminar as "Introducion to fine bubble technology" in Institute of Biocatalytic Engineering in TUHH.
The University of Tolyo, Prof. Dr. Terasaka present the invited lecture.
The University of Tokyo, Prof .Dr. Terasaka present a prenery lecture.
Keio University, Prof. Dr. Terasaka present a prenery lecture.
The first textbook for Fine Bubble Technology was published from Nikkan Kogyo Shimbun. The book which was written by Prof Terasaka et al. is the first textbook to study fine bubble science for beginner.
Prof Terasaka have a seminar as "Introducion to fine bubble technology" in Institute of Multiphase Flows in TUHH.
the Place Aparthotel in Manchester, UK, International Workshop on Process Intensification 2016, Mizuha Watanabe (M2) will present "Storage and dilution of ultrafine bubble water", and Tomoaki Shigehisa (M1) will present "Generation of High-Concentration Spot by Rapid Gas Dissolution from a Shrinking Single Bubble into Water".
TUHH, 2nd Symposium on Deep-Sea Oil Spills will be held.
11th European Fluid Mechanics Conference at Barceló Renacimiento Hotel in Seville, Spain, Motoki Iwakiri （M2) will present a study "Mass Transfer at Shrinking Single Microbubble Rising in Water"
Prof. Terasaka start a research as a Guest Researcher in Institute of Multiphase Flows in TUHH.
the 9th International Conference on Multiphase Flows at Firenze, Utaly, Prof. Terasaka will present "Microbubble generation from ultrafine bubble water by ultrasonic stimulation" as Poster.
Second International Symposium on Advanced Water Scence and Technology was held in Nagoya University, Japan.
Prof. Dr. Terasaka takled a invited lecture entaitled "Polluted water treatment and cleaning with fine bubble water"
Pacifichem 2015 in Honolulu, Hawaii, at the session of Materials & Nanoscience, Prof. Terasaka will present a study on "Microbubble generation from gas supersaturated water by ultrasonic stimulation as a poster.
Melboure, Australia, Assistant Prof. Fujioka presented a study on "Dissolution and Shrinking Behavior of a Microbubble in a Microchannel", Ami Tanaka (M2) also will presented a study on "Separation of Albumin Suspended in Water with Small Bubble Flotation".
Prof. Terasaka and Assitant Prof. Fujioka visited TU-HH with 8 under graduate students.
Crown Crown Plaza City Alster in Hamburg, 2nd International Symposium on Multiscale Multiphase Process Engineering (MMPE2014) was held.
Prof. Terasaka was a Chair ofJapan-side Committee.
Prof. Terasaka spoke a lecture "Applications of Fine Bubble Technology for Industry” Assistant Prof. Fujioka showed ”Development of Static Mixer for Emulsification and Dispersion”.
Mr. Shibata(D2) showed ”Building Up of the CFD Model for Spiral Flow Aeration Tank”, Ms. Ooeda(M2) showed ”Removal of Egg Yolk Contaminated in Egg White Using Microbubble Flotation”、, Ms. Kurabe(M2) showed ”Reduction of Excess Activated Sludge by Inducing Ozone Microbubbles”, Ms Ikeda(M2) showed ”Shrinking Microbubble in Microchannel Made of PDMS” Mr. Namai(M2) showed ”Development of Bubble Shearing Model to Design Aerated Stirred Tank”, Mr. Iwakiri(M1) showed ”Production of Hollow Silver Particles Using Microbubbles” Prof. Schlueter showed ”Investigation on Defouling of Microfluidic Channels with Ultrafine Bubble Technology”instead of Tzu-Nen.
They presented their studies as posters.
Prof. Terasaka and Assitant Prof. Fujioka visit TU-HH with 8 under graduate students.
the 2nd International Symposium on Fine Bubble Technology, Prof. Terasaka spoke a plenary invited lecture.
Mr. Tzu-Nen Tzeng (TU-HH, Germany) joined as a Visiting Research Student to Terasaka Laboratory in Keio University.
COEX in Korea, on The 11th International Conference on Gas-Liquid &
Gas-Liquid-Solid Reactor Engineering （GLS-11)", Mr. Kanai will present
a lecture as "(C-2) Mass Transfer in Molten Salt and Suspended Molten
Salt in Bubble Column".
Dr. Fujioka will also present a poster as "Microbubble Formation By Using a Microchannel and Its Shrinking Behavior" on The 19th World Congress of Chemical Engineering.
Internatonal Conference on Multhiphase Flow 2013 at Jeju, Korea, Mr. Shibata presented a poster as "Evaluation of oxygen transfer model in plant scale bubble column".
the International Symposium on Fine Bubble Technology, Prof. Terasaka spoke a plenary lecture "Fundamentals of Fine Bubble Technology and Its Measuring Techniques and Applications"
The 23rd International Symposium on Transport Phenomena in University of Auckland, New zealand, Prof. Dr. Terasaka presented a poster "Recovery of Polyphenol in Water Using Microbubble Flotation".
Prof. Terasaka visited to Institute of Multiphase Flow, Technische Universitaet Hamburg-Harburg (Prof. Dr. M. Schlueter).
The 9th International Conference on Separation Science and Technology, in Korea, Dr. Fujioka presented a poster as "Development of multi-slit type submilli-bubbles distributor " and Ms. Orikasa also presented a poster as ”Recovery of oil from emulsion using microbubble flotation".
The 20th Annual Meeting of the Japan Society of Sonochemistry & The
International Workshop on Advanced Sonochemistry 2011（ＩＷＡＳ 2011）, Ms. Mika
Ohata presented her study "Release of the intra-liposomal content
using ultrasaound irradiation and heating" in Poster Session.
Mr. Yusuke Takeuchi also presented his study ”Effects of reactor materials on ultrasonic degradation efficiency under indirect irrediation" as a Poster.
The 1st International Symposium on Multiscale Multiphase Process Engineering (MMPE2011) held at Kanazawa in Japan, five studies in Terasaka Labo presented as following studies: "Hot CO2 Recovery in Lithium Silicate Slurry Bubble Column” by Mr. Yugo Kanai, ”Sucrose Crystallization Utilizing Dissolution and Shrinkage of Microbubbles Generated by Electrolysis” by Mr. Takaaki Murase, ”Development of a novel microbubble aerator for waste water treatment using aerobic activated sludge” by Ms. Ai Hirabayashi, ”Heat Transfer Characteristics of Gas-liquid Slug Flow in Mini Channel” by Mai Mitsui and ”Dynamic Behavior of Microbubbles Irradiated Ultrasound” by Ryota Akutsu.
Ms. Ai Hirabayashi will presented ”Development of Microbubble Aerator for Waste Water Treatment Using Aerobic Activated Sludge” in The Tenth International Conference on Gas-Liquid and Gas-Liquid-Solid Reactor Engineering (GLS10) at Braga Portugal.
Dr. Satoko Fujioka presented "Prediction of Hydrodynamics in Bench-Scale Bubble Column Using Commercial CFD Software” as poster.
Prof Dr. Terasaka will present "Dynamic control of microbubble swarm using ultrasonic irradiation" in The international Chemical Gongress of Pacific Basin Scieties" in Honolulu, USA.
Ms. Hiromi Ninomiya will present her study on "Hydrodynamics in suspended bubble column aerated with highly dense gas" in 2nd Asian Conference on Innovative Energy and Environmental Chemical Engineering, Phuket, Thailand.
Dr. Fujioka visits to Technische Universitaet Hamburg-Harburg, Institute of Multiphase Flow supported by Organized Program for Young Researchers to study abroad.
Mr Yoshiyuki Hayashida presents the research "Agglomeration and redistribution of microbubbles using ultrasonic irradiation" on International Conference on Multiphase Flow 2010.
Ms Chiaki Watanabe also presents her study "Generation of microwaterdroplets in oil using condensation of steam bubbles".
Dr. Kobayashi will present "Dynamic Behavior of Microbubbles in Ultrasonic Field" at 8th World Congress of Chemical Engineering in Montreeal, Canada.
In GLS9, alternaive conference of WCCE8, Dr. Kobayashi will present "Dynamic Behavior of Microbubbles in Ultrasonic Field" as well as Mr. Kanai will present "Hot CO2 Recovery Using Lithium Silicate Suspende in Molten Salt"instead of Prof. Terasaka.
Prof. Terasaka presented "Mass Transfer from Shrinking Single Microbubble into Electrolytic Aqueous Solution" at 5th International Conference on Diffusion in Solids and Liquids - Mass Transfer, Heat Transfer and Microstructure and Properties in Rome, Italy.
Dr. Kobayashi presented "Agglomeration Mechanism of Microbubbles in Ultrasonic Field" at International Workshop on Process Intensification 2008 in Tokyo Institute of Technology, Oookayama, Japan.
Mr. Ozaki presented "Chemical Gas Absorption of Hot CO2 into Lithium Silicate Particles Suspended in Molten Salt" at The 8th International Conference on Separation Science and Technology in Karuizawa.
Prof. Terasaka presented a study of "Mocrobubble Flotation for Iron Oxide Particle Separation from Suspension" at the 1st Asian Conference on Innovative Energy & Environmental Chemical Engineering - A New Paradigm Emerging from Fluidozed-Bed and Three-Phase Reactors in Sappro, Japan.
Dr. Kobayashi presented "Effect of ultrasonic irradiation on behaviour of microbubbles" at the11 th Meeting of the European Society of Sonochemistry on La Grande - Motte, France.
Assoc. Prof. Dr. Terasaka was promoted to Professor in Keio University.
International Conference on Multiphase Flow 2007, Leipzig, Germany, four research papers of our labo were presented.
Assoc. Prof. Dr. Koichi Terasaka presented a study on "Recovery of fine carbon particlesfrom water using microbubble flotation." Takashi Goshima also presented a poster "Behavior of bubble formed from a coaxial nozzle in capillary tube into flowing liquid." Yoshihito Sasada presented a poster "Submilli-bubble dispersion from a novel gas distributor into water."
Takashi Goshima presented a poster "Slug Bubble Formation in Liquid in Capillary Tube" at IWPI2006 in Kobe University.
A. Prof. Terasaka presented the research "Absorption and stripping of CO2 with molten salt slurry in bubble column at high temperature"
A. Prof. Terasaka presented the research "CO2 gas recovery using slurry bubble column suspended lithium silicate particulates at high temperature" at Pacifichem 2005 Congress in Honolulu, Hawaii.
A. Prof. Terasaka presented the research "High Temperature CO2 Absorption with Lithium Silicate Particulates Suspended in Molten Salt" at The Seventh International Conference on Separation Science and Technology between Korea and Japan in Dongyang UniversityYeongju, Korea.
A. Prof. Terasaka presented the research "Uniform small bubble distribution into highly viscous liquids using spiral liquid flow" at the 7th World Congress of Chemical Engineering in Glasgow, Scotland.
Assc. Prof. Terasaka will present our research "Interfacial Area and Rising Velocity of Single Bubble Measured 3-Dimensionally Using Laser Sensors."
the 6th Japanese/German Symposium on Bubble Columns at Nata New Public Holl, Yousuke Inoue presented a poster entitled "Simultaneous measurement of 3-dimensional shape and behavior of single bubble in liquid using laser sensors."
Associate Prof. Terasaka presented at the 6th International Conference on Gas-liquid and Gas-Liquid-Solid Reactor Engineering (GLS-6) in Vancouver, Canada. The title of the presentation was "Bubble Distribution in Shear Flow of Highly Viscous Liquids."
Assoc. Prof. Dr. Terasaka presented at The 8th Asian Conference on Fluidized-Bed and Three-Phase Reactors (ASCON2002) in Bangkok, Thiland.
The title of the presentation was "Oxygen Transfer in Viscous Non-Newtonian Liquids Having Yield Stress in Bubble Columns Operated under Slug Flow Condition." T. Goshima also presented a poster entitled "Solid particle circulation rate and gas-solid behavior in twin-column circulating fluidized bed" with Dr. Terasaka
Assoc. Prof. Dr. Terasaka presented "Gas Holdup and Oxygen Transfer in Viscous Non-Newtonian Liquids Having Yield Stress in Bubble Column" at 15th International Conference of Chemical and Process Engineering (CHISA2002) in Praha, Czech
Dr. Terasaka presented the research entitled "Gas Holdup and Oxygen Transfer in Viscous Liquids Having Yield Stress in Bubble column"at 6th World Congress of Chemical Engineering and Gas-Liquid-Solid Reactor Engineering 2001 at Melbourne, Australia.
Chemical Reaction Engineering Laboratory was established in Department of Applied Chemistry in Keio University.