アルテミアに及ぼす水中衝撃波の影響（水中衝撃波による微生物処理技術に関する基礎研究）

概要

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Ballast water is used to stabilize an empty ship on the open sea. It often contains various microorganisms such as plankton and bacteria, and causes serious damage to aquatic ecosystems where it is discharged. Ultra-high pressure underwater shock waves were applied to treatment those microorganisms. The imploding detonation of propane-oxygen mixture was used to generate the underwater shock waves in a sample holder an inner diameter of 10.9 mm. We investigated the imploding detonation wave in approximately hemisphere-shaped combustion chamber having maximum inner diameter of 60 mm and generated underwater shock waves of 100 MPa, 50 MPa and 25 MPa. As microorganisms of the high pressure treatment experiments, dehydrated eggs, or cysts, of Artemia salina were used. We obtained same cases that low percentage of hatchability had been indicated, and it was suggested that pressure increase speed of underwater shock wave had an influence on Artemia salina.