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Study on Recycling of the Food Wastes Considering Environmental Load
https://kagawa-u.repo.nii.ac.jp/records/414
https://kagawa-u.repo.nii.ac.jp/records/4145e70d89f-9738-45ad-adaa-fb53f72278fd
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本文の要約 (4.3 MB)
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内容の要旨・審査結果の要旨 (174.4 kB)
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| Item type | 学位論文 / Thesis or Dissertation(1) | |||||||||||
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| 公開日 | 2020-04-02 | |||||||||||
| タイトル | ||||||||||||
| タイトル | Study on Recycling of the Food Wastes Considering Environmental Load | |||||||||||
| 言語 | en | |||||||||||
| 言語 | ||||||||||||
| 言語 | eng | |||||||||||
| 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 | |||||||||||
| その他（別言語等）のタイトル | ||||||||||||
| その他のタイトル | 環境負荷を考慮した食品廃棄物の再資源化に関する研究 | |||||||||||
| 言語 | ja | |||||||||||
| 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 | |||||||||||
| 著者 |
柴田, 慶一郎
× 柴田, 慶一郎
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| 抄録 | ||||||||||||
| 内容記述タイプ | Abstract | |||||||||||
| 内容記述 | In recent years, the society of mass production and mass consumption has changed to a recycling society in order to eliminate environmental destruction, resource shortage, and disposal site shortage. In modern society, it is essential to reuse waste in all fields based on the three R concepts, and Waste recycling has been improving rapidly since around 1996. Many recycling methods have been proposed to further increase the recycling rate. Among them, some industries have very few types of recycling methods, which is food waste. In the recycling of food waste, highly efficient resource recycling technology is not necessarily advanced because the composition of the waste is unstable. The amount of recycled food waste is about 50 percent of the amount generated, and most of it is used as fertilizer or feed. The recycling rate has been flat for a long time because there are few other resource utilization methods. Therefore, in this study, the food waste is recycled by methods other than feed and fertilizer. Also, the cost needs to be reduced as much as possible due to the large amount of waste. From these facts, the recycling method is examined for three food wastes. The three food wastes are rice husk, fish bone, and sugar syrup, respectively. As a result of the test using each food waste, resource utilization methods utilizing each characteristic are confirmed. This paper is composed of the following six chapters. In Chapter 1, guidelines and study trends on waste disposal methods and recycling are introduced, and the positioning of this issue is described in detail. Also, the significance and object of this study are shown. In Chapter 2, the results of study on rice husk are described in detail. The adsorption performance for cesium and heavy metals is clarified take advantage of the aromaticity of rice husk. It is found that cesium has the same adsorption effect as conventional adsorbent zeolite by combining electrophoresis and rice husk. An immersion adsorption experiment is conducted for heavy metals. It is found that the adsorption effect for divalent heavy metal ions (Cu2+, Zn2+, Ca2+, Hg2+ and etc.) are high though the adsorption effect for arsenic is low. In Chapter 3, the results of study on discarded fishbone are shown. The waste fishbone is boiled and fired to produce a porous adsorbent based on hydroxyapatite, FbA (Fishbone Absorber, or FbP (Fishbone Powder) if powdered), and used for the adsorption test. As a result of adsorption immersion test on strontium and heavy metals, it is found that FbA has a high adsorption effect on strontium in addition to divalent heavy metal ions as well as rice husk. In Chapter 4, the study results about FFP (Functionalized Fishbone Powder) are shown. In the RH and FbA, adsorption effect for the arsenic, which is highly dangerous to human bodies, is not confirmed. Therefore, a new adsorbent is developed by using FbP as a base material. As a result of an adsorption test using a new adsorbent "FFP", it is found that the adsorption effect on arsenic is significantly improved while maintaining the adsorption effect on divalent heavy metals and strontium. In Chapter 5, the study results about waste syrup is shown. Cement contains a large amount of harmful hexavalent chromium. There is a risk that the hexavalent chromium may be eluted into the environment from cement-modified soil and recycled materials such as recycled roadbed materials. A dissolution test is conducted using waste syrup as an admixture of concrete in order to prevent elution of hexavalent chromium. As a result, it is revealed that the eluted concentration of hexavalent chromium is greatly reduced. Furthermore, the compressive strength of the improved soil is improved. In Chapter 6, this thesis is summarized. |
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| 言語 | en | |||||||||||
| 学位名 | ||||||||||||
| 言語 | ja | |||||||||||
| 学位名 | 博士（工学） | |||||||||||
| 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 | 16201 | |||||||||||
| 言語 | ja | |||||||||||
| 学位授与機関名 | 香川大学 | |||||||||||
| 言語 | en | |||||||||||
| 学位授与機関名 | Kagawa University | |||||||||||
| 学位授与年月日 | ||||||||||||
| 学位授与年月日 | 2020-03-24 | |||||||||||
| 学位授与番号 | ||||||||||||
| 学位授与番号 | 甲第139号 | |||||||||||
| 著者版フラグ | ||||||||||||
| 出版タイプ | VoR | |||||||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||||
| KEID | ||||||||||||
| 値 | 28860 | |||||||||||
