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アイテム
廃棄下水汚泥の嫌気消化における微生物群集調節剤の効果検証
https://doi.org/10.18997/00009136
https://doi.org/10.18997/000091366153ecd7-d31d-48e7-8316-18d8dca88b02
| 名前 / ファイル | ライセンス | アクション |
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sei_k_433.pdf (1.8 MB)
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| アイテムタイプ | 学位論文 = Thesis or Dissertation(1) | |||||||
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| 公開日 | 2023-03-27 | |||||||
| 資源タイプ | ||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_db06 | |||||||
| 資源タイプ | doctoral thesis | |||||||
| タイトル | ||||||||
| タイトル | Effect of Microbiota-Modulating Agents on Anaerobic Digestion of Waste Sewage Sludge | |||||||
| 言語 | en | |||||||
| タイトル | ||||||||
| タイトル | 廃棄下水汚泥の嫌気消化における微生物群集調節剤の効果検証 | |||||||
| 言語 | ja | |||||||
| 言語 | ||||||||
| 言語 | eng | |||||||
| 著者 |
Roy, Chapol Kumar
× Roy, Chapol Kumar
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| 抄録 | ||||||||
| 内容記述タイプ | Abstract | |||||||
| 内容記述 | Waste sewage sludge （WSS） is a by-product of wastewater treatment plants. However, this system creates a huge amount of WSS. The vast quantity of WSS creates a severe issue to municipalities and industries in terms of treatment costs, contaminants, and waste management. Practically, the disposal of WSS through landfill or incineration is strictly regulated. It has created the more vulnerable problems in terms of cost, shortage of available land, and environmental issues. Many approaches have been introduced to incorporate bioenergy generation and bioremediation in order to fully utilize this WSS for environmental protection and biodiversity conservation. Both strategies are drives by a complex microbial community in WSS. As a result, the success of both strategies, bioenergy production and bioremediation, can be determined based on an active microbial community profile through next-generation sequencing by MiSeq. Bioenergy production through organic compound digestion is another strategy that has been taken to utilize WSS. Much research has been done in laboratory conditions to find an efficient methane production strategy, including application of antibiotics, inorganic, and organic compounds. On the other hand, in recent years, since it was revealed that the balance of gut microbiota contributes to human health, various supplements that change the activity of microbial communities in the gut are being studied for the maintenance of human health and the prevention of diseases. Therefore, microbiota-modulating agents have been used as one of the strategies that can change microbiota during anaerobic digestion. It is important to understand their mechanisms and functions and how microbiota-modulating agents effect on methane production during anaerobic digestion. Therefore, in this study, several microbiota-modulating agents produced various methane profiles to elucidate microbial interactions and regulatory systems in each stage of the anaerobic digestion process. In addition, during anaerobic digestion methane production was significantly increased in the WSS with sodium tungstate when compare to the control WSS. Besides, acidogenesis, acetogenesis, and methanogenesis stages were efficiently occurred due to the activation of bacterial communities by sodium tungstate. However, sodium tungstate has shaped the favorable conditions for acetoclastic methanogens in methanogenesis stages. In addition, we have found the positive effects of sodium molybdate on methane production in anaerobic digestion of WSS. Moreover, in this study, hydrogen sulfide was remarkably reduced when sodium molybdate was mixed with WSS. During anaerobic digestion, hydrolysis, fermentation, and methanogenesis stages occurred efficiently due to the addition of sodium molybdate. Another approach has been done the effect of sodium selenite at different concentrations on anaerobic digestion of waste sewage sludge was investigated. There is a double-sided effect that methanogens are activated at a low concentration and microbial activities are inactivated at a high concentration. On the other hand, shows that four types of microalgae increase methane production on anaerobic digestion of waste sewage sludge by the activation of methanogens. The interaction between microbes in waste sewage sludge and microalgae was a key point in increasing methane production in this system. Therefore, it has been well studied in this work that, altered microbial communities can have an effect on methane production, where a balance is required in microbial communities in each stages for efficient methane production. To change the microbial community, microbiota-modulating agents, which have an effect on gut health, have been showing good performance. Taken together, the findings of this study are significantly important to utilize WSS properly, which is harmful to the environment, at the same time it helps to resolve the high cost of WSS treatment through improve bioenergy production. | |||||||
| 言語 | en | |||||||
| 目次 | ||||||||
| 内容記述タイプ | TableOfContents | |||||||
| 内容記述 | 1: Introduction||2: General Materials and Methods||3: Effect of Low and High Concentration of Trace Elements on Anaerobic Digestion in Waste Sewage Sludge||4: Impact of Sodium Tungstate on Methane Production in Anaerobic Digestion Using Waste Sewage Sludge||5: Sodium Molybdate Enhances Methane Production and Reduces Hydrogen Sulfide on Anaerobic Digestion of Waste Sewage Sludge||6: Double-Sided Effect of Sodium Selenite at A Low and High Concentration on Anaerobic Digestion of Waste Sewage Sludge||7: Effect of Microalgae-Bacteria Interaction on Methane Production in Anaerobic Digestion of Waste Sewage Sludge||8: Concluding Remarks and Recommendations for Future Research | |||||||
| 備考 | ||||||||
| 内容記述タイプ | Other | |||||||
| 内容記述 | 九州工業大学博士学位論文 学位記番号: 生工博甲第433号 学位授与年月日: 令和4年3月25日 | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | Waste sewage sludge | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | Microbiota-modulating agents | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | Anaerobic digestion | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | Microbial community | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | Methane production | |||||||
| キーワード | ||||||||
| 主題Scheme | Other | |||||||
| 主題 | Organic acid | |||||||
| アドバイザー | ||||||||
| 前田, 憲成 | ||||||||
| 学位授与番号 | ||||||||
| 学位授与番号 | 甲第433号 | |||||||
| 学位名 | ||||||||
| 学位名 | 博士（工学） | |||||||
| 学位授与年月日 | ||||||||
| 学位授与年月日 | 2022-03-25 | |||||||
| 学位授与機関 | ||||||||
| 学位授与機関識別子Scheme | kakenhi | |||||||
| 学位授与機関識別子 | 17104 | |||||||
| 学位授与機関名 | 九州工業大学 | |||||||
| 学位授与年度 | ||||||||
| 内容記述タイプ | Other | |||||||
| 内容記述 | 令和3年度 | |||||||
| 出版タイプ | ||||||||
| 出版タイプ | VoR | |||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||
| アクセス権 | ||||||||
| アクセス権 | open access | |||||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||
| ID登録 | ||||||||
| ID登録 | 10.18997/00009136 | |||||||
| ID登録タイプ | JaLC | |||||||
