Ecotoxicological assessment of exhaust gas emitted from marine diesel engine using a future-generation fuel.

2014 Fiscal Year Final Research Report

• Project/Area Number: 25630406
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Naval and maritime engineering
• Research Institution: Kobe University
• Principal Investigator: OKAMURA Hideo 神戸大学, 内海域環境教育研究センター, 教授 (90253020)
• Co-Investigator(Kenkyū-buntansha): HARINO Hiroya 神戸女学院大学, 人間科学部, 教授 (20291213) ; DAN Tomohisa 神戸大学, 大学院海事科学研究科, 教授 (80314516) ; ASAOKA Satoshi 神戸大学, 内海域環境教育研究センター, 助教 (60548981)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: 次世代舶用燃料 / 生態系影響 / 排ガス / 粒子状物質 / 粒径 / 精密ろ過膜 / 発がん性 / 多環芳香族炭化水素

Outline of Final Research Achievements

The seawater bubbled with exhaust gas emitted from marine diesel engine using a future-generation fuel (new fuel), a 70 % heavy fuel oil with 30% dimethylether, or a traditional heavy fuel oil (C fuel oil) was subjected for ecotoxicity assay and chemical analyses. The seawater bubbled with the gas using C fuel oil indicated higher toxicity on algal growth than that using new fuel. Toxic substances to inhibit algal growth were adsorbed on the particles whose diameter ranging from 0.1 to 1 μm in the seawater. The total amount of polycyclic aromatic hydrocarbons (PAHs) adsorbed on the particles in the seawater bubbled with the gas using new fuel was higher than that using C fuel oil. Carcinogenic PAHs were adsorbed on the particles whose diameter ranging from 0.1 to 1 μm in the seawater bubbled with the gas using C fuel oil, but they were not detected in the seawater with the gas using future-generation fuel.

Free Research Field

海洋環境管理、環境毒性学、水環境学