成果報告書詳細
管理番号20140000000848
タイトル*平成23年度中間年報 「新エネルギーベンチャー技術革新事業 新エネルギーベンチャー技術革新事業 (バイオマス) マイクロ波を応用した藻類燃料の革新的抽出技術の開発」
公開日2015/4/24
報告書年度2011 - 2011
委託先名マイクロ波化学株式会社 国立大学法人大阪大学 株式会社デンソー
プロジェクト番号P10020
部署名イノベーション推進部
和文要約
英文要約Title: New Energy Venture Business Technology Innovation Program / New Energy Venture Business Innovation Program (Biomass) / Development of a novel extraction process of algal oil based on microwave chemistry (FY2011-FY2012) FY2011 Annual Report

Biofuels derived from algae oil is in high demand recenly as one of the most effective means of reducing carbon dioxide. Especially, soaring crop prices such as sugar cane and corn led to focused attention on algae as a non-competing source of biomass with food.
However, the full-scale adoption of technology is expected to take several more years due to various technical and cost challenges. In the U.S., despite the challenges, industry as well as government/military are providing massive funding to accelelrate the development and commercilaization of algal fuel. In Japan, the government released the “Basic Enegy Plan” in 2006. The report set a tareget to lower oil dependency in the transportation sector to 80% by year 2030 by promoting alternative energy such as biomass including algae oil. (New National Energy Strategy, Ministry of Economy, Trade and Industry). In order to achieve such goal and compete internationally, not only low cost/large scale harvesting technology for algae is required, but innovative low cost extraction technology is required.
In this project, we will develop a novel extraction process of algal oil based on microwave chemistry. We will also scale up the process and achieve extremely efficient extraction. The process we have developed so far allows extraction of oil under the existence of water and reduces the number of process significantly by utilizing hybrid catalyst under microwave irradiation.
Based on the client/user needs research and the feasibility study conducted beforehand, we will develop a proto-type reactor. The reactor will reflect the required features by potential clients/users.
Result and Current Status of the Development Plan
1. Development of hybrid catalyst
a. Designing of catalyst
Design concept of the hybrid catalyst suitable for microwave irridiation, depends on the 1) microwave absorption evaluation which depends on the dielectric loss constant or magnetic loss constant, 2) absorption evaluation focused on lipids, 3) porus design for specific surface area. This hybrid catalyst concentrates the electric and magnetic fields near the catalyst under microwave irradiation. Algae in the vicinity of this catalyst will selectively interact with the microwave, as a result, the cell wall is destroyed by local heating caused by the microwave, enabling highly efficiencient oil extraction.
Currently we are working on three specific hybrid catalyst and analyzing the frequency dependence and temperature dependence.
b. Catalyst on fixed bed and fluidized bed reactor
Currently we are working on a catalyst utilizing carbon material for fixed bed and fluidized bed reactor.
2. Optimization of extraction conditions
a. Obtaining data
Fixed the evaluation conditions based on the two types of algae provided by Denso.
b. Observation utilizing microscope
Confirmed difference in appearance of the two types of algae utilizing optical microscope.
c. Comparison with solvent extraction
3. Evaluation of extracted oil
We conducted solvent extraction utilizing OBI strain and N1 strain under same conditions. There was no significant difference between the amount of oil extracted.
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