Construction and demonstration study of an energy-saving seawater sterilization system using underwater film motion

2022 Fiscal Year Final Research Report

• Project/Area Number: 19K22016
• Research Category: Grant-in-Aid for Challenging Research (Exploratory)
• Allocation Type: Multi-year Fund
• Review Section: Medium-sized Section 24:Aerospace engineering, marine and maritime engineering, and related fields
• Research Institution: Kobe University
• Principal Investigator: Abe Akihisa 神戸大学, 海事科学研究科, 教授 (50221726)
• Project Period (FY): 2019-06-28 – 2023-03-31
• Keywords: マイクロバブル / 水中衝撃波 / フリーラジカル

Outline of Final Research Achievements

In this research, by effectively utilizing the microbubble motion induced by shock pressure, we discovered an efficient production method and conditions for oxidizing substances, established an energy-saving, safe and secure marine microorganism treatment technology, and made a new contribution to the maritime industry. It was implemented with the aim of creating basic technology. Some of research works to find producing method of microbubbles were carried out such as timing of generation and prediction of generation amount of OH radicals in bubble movement, chain phenomenon of bubble collapse, bubble generation mechanism and cavitation generation conditions using elastic film and thin plate, effects of increasing concentration of OH radicals generated by water in which Ar gas is dissolved, cavitation bubble generation using metal loaded by electric discharge shock.

Free Research Field

圧縮性流体力学

Academic Significance and Societal Importance of the Research Achievements

本研究は、衝撃圧力によって誘起する微小気泡運動の有効活用により、酸化作用物質の効率的生成方法および条件を見出し、省エネルギーかつ安全安心な海洋微生物処理技術を確立し、海事産業分野に貢献できる新しい基盤技術を創出を目指し、海事科学分野において未だ応用例が少ない圧縮性流体力学に基づく取り組みである点で学術的意義があり、また海洋のSDGsや海事技術の発展に貢献が期待できる研究である点で社会的意義がある。