2007 Fiscal Year Final Research Report Summary
天然ホルモン除去を含む家畜糞尿・生ごみ混合物の高効率サーマルリサイクル技術の開発
| Project/Area Number |
18580331
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Boundary agriculture
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| Research Institution | Kumamoto University |
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Principal Investigator |
KIDA Kenji Kumamoto University, Graduate School of Science and Technology, Professor (00195306)
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| Co-Investigator(Kenkyū-buntansha) |
MORIMURA Shigeru Kumamoto University, Graduate School of Science and Technology, Associate Professor (20230146)
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| Project Period (FY) |
2006 – 2007
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| Keywords | methane fermentation / cow manure waste / natural steroid hormone / ozone oxidation / microbial community |
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| Research Abstract |
An efficient treatment process for screened cow manure waste, particularly for the degradation of natural steroid hormones, was developed. The first step in this process was a draw-and-fill process for thermophilic anaerobic digestion. After fourfold dilution with tap water, continuous feeding was performed for the aerobic treatment of the effluent from the anaerobic treatment. Batchwise ozone oxidation was then carried out for the degradation of the natural steroid hormones that remained in the effluent from the aerobic treatment. A yeast two-hybrid assay was performed to evaluate hormonal degradation. Significant reductions in the concentrations of total VFA, BOD_5, COD_cr, TOC, TS, VSS, and natural steroid hormones were demonstrated in the effluent from the biological treatments. The removal ratios of such concentrations were 99.7%, 90%, 79%, 84%, 51%, 58%, and 99%, respectively. Although the concentrations of the remaining TOC and COD_cr remained constant, natural steroid hormones were completely removed by ozone oxidation.
Microbial community in anaerobic digester for synthetic wastewater treatment containing 17β-estradiol was analyzed under the conditions at 8 g/l of TOC loading rate and at 0.05 d-1 of dilution rate. Bacterial-16S rRNA gene clone library analysis showed that the phylum Proteobacteria and Firmicutes were predominated in the reactor.
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[Journal Article] Degradation and Behavior of Natural Steroid Hormones in Cow Manure Waste during Biological Treatment and Ozone Oxidation2007
Author(s)
Rahyani, Ermawati, Shigeru, Morimura, Yueqin, Tang, Kai, Liu, Shigeru, Morimura, Kenji, Kida
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Journal Title
Journal of Bioscience and Bioengineering 103 (1)
Pages: 27-31
Description
「研究成果報告書概要(欧文)」より
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