Development of Energy utilization technology for by-product biomass from cleaning Seto Inland Sea

在相当于大阪湾深端波动环境的条件下，进行了大型藻类生产试验，确定了生长速率和环境恢复潜力。并对实际海域的播种和采集过程进行了讨论。当工厂废水与海水混合时，大型藻类对废水的处理是有效的。这种海洋生物质可以通过水热预处理制成浆料。获得了一组以褐藻酸为唯一底物生产乙醇的微生物。将发酵残渣在超临界水中气化，并对盐的作用进行了研究。基于这些发现的系统设计表明，尽管经济可行性较低，但利用大型藻类生产能源是可能的。

Under the conditions equivalent to the fluctuating environment at the deep end of the Osaka Bay, experiment on macro algae production was made, and growth rate and environmental recovery potential were determined. Also, procedure for seeding and collection in the actual sea was discussed. When waste water from factories are mixed with the sea water, the macro algae is effective for waste water treatment. This marine biomass can be made into slurry by hydrothermal pretreatment. A group of microorganism was obtained which produces ethanol using alginic acid as the only substrate. The fermentation residue was gasified in the supercritical water, and the effect of salt was elucidated. The system design based on these findings showed that energy production is possible using the macro algae although its economic feasibility is low.