| Project/Area Number |
13558070
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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 |
環境保全
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| Research Institution | Saitama University |
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Principal Investigator |
SAKAMOTO Kazuhiko Saitama University, Graduate School of Science and Engineering, Professor, 大学院・理工学研究科, 教授 (20111411)
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| Co-Investigator(Kenkyū-buntansha) |
SEKIGUCHI Kazuhiko Saitama University, Graduate School of Science and Engineering, Research Associate, 大学院・理工学研究科, 助手 (50312921)
ISHIHARA Hidekazu Saitama University, Faculty of Engineering, Research Associate, 工学部, 助手 (20261878)
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| Project Period (FY) |
2001 – 2003
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| Project Status |
Completed (Fiscal Year 2003)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,900,000)
Fiscal Year 2003: ¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 2002: ¥2,200,000 (Direct Cost: ¥2,200,000)
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| Keywords | low-grade coal / civil-use / sulfur dioxide / zero emission / global warming gas / water plant / combustion ash / radish plants / 工業用 |
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| Research Abstract |
Coal-biomass briquettes (BBs), which are composed of low-grade coal, biomass waste, and a sulfur fixation agent, emit less sulfur dioxide (SO_2) during combustion than low-grade coal ; thus, BBs are a good manufactured product for use as a domestic and light industrial fuel in rural areas subject to acid rain in China. The aim in this investigation is the development of the utilization technique for combustion ash of BBs (BB ash) as an amelioration agent for acidic soil because it has high alkalinity and contains a lot of nutrients.
Growth experiments were conducted to estimate the effects of the addition of BB ash to acidified soil (5wt% in the acidified soil) on the growth of radish plants and on the amounts of metals in plant tissue samples by using a growth chamber. The dry weight and length of plants were increased by the addition of BB ash to the soil, suggesting that plant growth was promoted because BB ash both neutralized acidified soil and contained much calcium, a plant nutrient. In addition, the addition of the BB ash inhibited the leaching of some phytotoxic metals (aluminum and manganese) from the BB ash and acidified soil and also inhibited the adsorption of the metals by plants. The BBs made of water plant such as reed, cattail, and water hyacinth had a high breaking strength and their combustion ash could use as not only soil neutralizing agent but also soil fertilizer.
These results suggest that BB ash is suitable as an amelioration agent for acidic agricultural soils. In addition, it was estimated that the adverse effect in soil environment was small because the impact of heavy metal derived combustion ash was small.
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