| Budget Amount *help |
¥13,650,000 (Direct Cost: ¥10,500,000、Indirect Cost: ¥3,150,000)
Fiscal Year 2022: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2021: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2020: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2019: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2018: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
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| Outline of Final Research Achievements |
The main purpose of this research is developing a non-excavation remediation method using surfactants for machine oil contaminated ground. The main results obtained are summarized below.(1) In the method using reaction foaming with sodium bicarbonate and tartaric acid, purification was more evenly achieved with a liquid feeding pattern that generated small amounts at multiple points at a fine time pitch.(2) Purification reliability was high in the case where the flow component of the surfactant that pressed down on the oil layer and the flow component from the side coexisted.(3) In purification by hydraulic gradient, by blending two types of surfactants with different HLB values, purification was completed without causing concentration or stagnation of surfactant components while maintaining emulsification performance.
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