KONA Powder and Particle Journal No. 41 (2024) 284–285/https://doi.org/10.14356/kona.2024022

Information Article

The KONA Award 2022
The KONA Award has been presented to researchers who have greatly contributed to research and development as wellas education in the field of Powder and Particle Science and Technology since 1990. It was originally given by Hosokawa
Micron Corporation, but now is presented to researchers from all over the world by the Hosokawa Powder Technology
Foundation annually. The application for this award requires a specified recommendation form written in English to be submitted to the President of the Hosokawa Powder Technology Foundation. The award candidates are reviewed by the KONA
Award Committee members, and the results are reported to the Selection Committee of the Foundation for the nominationof the awardee. It needs to be finally approved at the Board of Directors’ meeting of the Foundation. The KONA Award ispresented at a ceremony in or outside Japan with a plaque and a prize of one million yen. The KONA Award 2022 has beenpresented to two researchers this year, namely Prof. Hidehiro Kamiya and Prof. Toshitsugu Tanaka from Japan. The KONA
Award plaques were presented to the awardees at the 55th Symposium on Powder Technology on September 4, 2023.
Dr. H. Kamiya has realized various achievements in powder technology, particularly those related to fine and nanoparticles, and has widely disseminated his activities overseas. Based on the characterization of the surface interaction andstructure of nanoparticles, he investigated the fundamentals associated with the aggregation behavior of nanoparticles
in liquid. He discovered an organic ligand structure with universal dispersibility of nanoparticles into various polar andnonpolar organic solvents. By synthesizing various ligands with different molecular structures, he discovered the optimum
ligand molecular structure for universal dispersibility. Such surface-treated nanoparticles were applied to prepare new freestanding, rollable, and transparent silicone polymer films.
Utilizing fine particles and microcapsules measuring larger
than 100 nm in diameter, he investigated the original molecular
design of polymer structures on particles and capsules to characterize and control surface interaction via colloid probe AFM. In
the gas phase, the adhesion of fine ash particles at high temperatures hindered the stable operation of various energy systems.
Hence, he developed original systems for characterizing theparticle adhesion force and shear strength of single ash at hightemperatures based on a split-type tensile strength tester. Since
real ash includes various chemical elements, he developed amodel of ash particles prepared from pure silica as well as othermetal oxide fine particles, with the addition of alkali metal orphosphorus. Based on the fundamental characterization method
and ash model, he investigated the mechanism of increasingash particles generated from different plant and fuel sources. To
control the adhesion behavior of ash, he proposed the addition ofalumina and other inorganic nanoparticles. The characterization,

Application 1

Application 2

Nano- and fine particles powder
process design
HO OHforHO PO
OPO/ Fine ceramics O/ Composite, nanoparticles
dispersed polymers/ Lithium ion battery electrode
OHOO

3
3

At the KONA Award presentation ceremony,
President Yoshio Hosokawa (Left) and 2022 KONA AwardeeProf. Hidehiro Kamiya (Tokyo Univ. of Agriculture and Technology, Japan).

Energy and environment
Ash behavior control at hightemperature, dust collection coal,biomass, waste powergeneration plant/ PM 2.5, Nanoparticle emission,
ISO standard/ Nano risk, Nano toxicity

Application 3

Pharmaceutical / DDS, Inhalation
Oral administration using microcapsule
Orally disintegrating tablet
Life and other application/ Cosmetic powder/ Toner for dry copy, ink jet
Food and Energy system
Agriculture + Engineering

Fundamentals :Characterization and control of adhesion, aggregation / dispersion, andpacking behavior by using interface molecular and nanometer scaled structure design/ Development of new characterization method, such as colloidal probe AFM method and NMR,
/ Molecular design of ligand for nanoparticle dispersion, nanoparticles coating on fine particles.

Particle adhesion and aggregation behavior characterization and control.
Selected research achievements for the KONA Award 2022 (Prof. Hidehiro Kamiya): Particle adhesion and aggregation behavior characterization and control.

284

simulation and modeling, and control of adhesion and aggregation have been expanded to various industrial fields, including pharmaceuticals, cosmetics, and pigments.
The results above have been published in 243 original papers (182 WoS papers) and 76 review papers. He has filed 23patents, published 55 books, and presented 37 keynote lectures at international conferences. Additionally, he has contributed
to the activities of the “Association of Powder and Particle Industry and Engineering in Japan, APPIE” as a coordinator of
the “Fine Powder Nanotechnology” group from 2001 to 2021. Furthermore, he has served as a vice chair of the committeeof “Nanoparticle Safety” and an editor for the book, “Safe Use of Nanoparticles.”Dr. T. Tanaka has been conducting research at Osaka University, focusing on fluid engineering and powder technology,
particularly with regard to discrete particle modeling and simulations of gas–solid flows and granular flows, for 38 years.
He began his career at the dawn of discrete particle simulation. When he started his numerical research, only the Lagrangian
numerical simulation neglecting particle–particle collision or contact and the two-fluid-model simulation were available.
He made pioneering works for modeling both collision-dominant flows and contact-dominant flows.
First, he proposed a deterministic method for calculating of particle–particle collision to study the effect of particle–
particle collision on the diffusion of particles in dilute gas–solid flows, and to study the effect of particle–particle collisionon the spatial structure of particles in gas–solid turbulent flow. To reduce the calculation cost, he proposed the utilizationof DSMC method to gas–solid flows, and successfully predicted the particle cluster formation observed in the riser ofcirculating fluidized bed.
His most brilliant achievements were the developments of the DEM-CFD model and simulations. He made novel discrete
simulation models and methods to reproduce a plug flow in a horizontal pipe and fluidized beds. Since then, his model andsimulation method have been widely used for basic studies of dense gas–solid flows and applied for many industrial applications. The total number of citations of his pioneering papers on the DEM-CFD model is over 3400, demonstrating the excellence of his pioneering achievements. He extended his work to thelarge-scale DEM-CFD simulation of fluidized behavior in threedimensional fluidized bed, and to a reduced spring constantmodel for cohesive particles.
For the above achievements, Dr. Tanaka was awarded theBest Paper Award of the Society of Powder Technology, Japanin 2012, JSME Fellow from JSME in 2011, and DistinguishedAchievement Award of the Information Center of Particle Technology, Japan in 2004, among other awards. Dr. Tanaka is an
acknowledged world leader, especially in the field of numericalmodeling and simulations of gas-solid flows and granular flows,
and has made significant contributions to the development ofpowder science and technologies worldwide

At the KONA Award presentation ceremony,
President Yoshio Hosokawa (Left) and 2022 KONA AwardeeProf. Toshitsugu Tanaka (Osaka University, Japan).

Discrete Particle Modeling and Simulation of Granular Flow

─ Pioneering development of numerical prediction of granular flow and gas-solid flow ─
DEM + CFD

TransportCollision(Hard-particle model)

Contact(Soft-particle model)

Turbulence
Difusion
modification

Clustering

Deterministic
Stochastic (DSMC)
Linear
HertzianSoft springmodeling

Fluidization
Heat exchange

MixingSegregation
Aggregation

From analysis to prediction
Selected research achievements for the KONA Award 2022 (Prof. Toshitsugu Tanaka): Developmentof discrete particle modeling and simulations of gas-solid flows and granular flows.

285