2002 Fiscal Year Final Research Report Summary
Utilization of algal biomass produced by Nox treatment system and collected from eutrophic lake
| Project/Area Number |
12555229
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 展開研究 |
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| Research Field |
生物・生体工学
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| Research Institution | Osaka University |
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Principal Investigator |
MIYAMOTO Kazuhisa Osaka Univ., Graduate School of Pharmaceutical Sciences, Professor, 薬学研究科, 教授 (30028849)
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| Co-Investigator(Kenkyū-buntansha) |
MIYASAKA Hitoshi The Kansai Electric Power Company, Inc., Chief Researcher, 総合技術研究所, チーフリサーチャー(研究職)
NAGASE Hiroyasu Osaka Univ., Graduate School of Pharmaceutical Sciences, Research Associate, 薬学研究科, 助手 (00252700)
HIRATA Kazumasa Osaka Univ. Graduate School of Pharmaceutical Sciences, Associate Professor, 薬学研究科, 助教授 (30199062)
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| Project Period (FY) |
2000 – 2002
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| Keywords | Microalgae / Water bloom / NOx / Biomass / Lactic acid / Hydrogen / Heavy metal |
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| Research Abstract |
We tried to develop an algal system for simultaneous removal of CO_2 and NOx in flue gas. It is important to recycle carbon dioxide and we investigated the development of an effective technique to recycle algal biomass produced in this CO_2/NOx treatment system. This technique was applied to use cyanobacterial biomass collected from eutrophic lakes. It was shown that algal and cyanobacterial biomass could be used to produce hydrogen gas or biosorbent for heavy metals.
1. Analysis of algal biomass.
The component of algal biomass was analyzed to optimize the utilization method.
2. Hydrogen production from algal biomass.
Hydrogen was produced by photosynthetic bacterium, Rhodobium marinum A-501, from lactic acid, which was produced by Lactobacillus amylovorus from starch contained in algal biomass. Furthermore, it was possible to produce hydrogen directly from algal biomass using mixed culture or R. marinum A-501 and L. amylovorus.
3. Heavy metal removal from environmental water by microalgae.
In environmental water, Ca and Mg ions are contained at high level. Heavy metals, such as Zn, Cd, Cu, and Pd were found to be removed in the presence of Ca or Mg ion.
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