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https://hdl.handle.net/20.500.14094/90003673
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2024-04-26
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90003673 (fulltext)
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メタデータID
90003673
アクセス権
open access
出版タイプ
Accepted Manuscript
タイトル
Optimum reaction ratio of coal fly ash to blast furnace cement for effective removal of hydrogen sulfide
著者
Asaoka, Satoshi ; Okamura, Hideo ; Kim, Kyunghoi ; Hatanaka, Yuzuru ; Nakamoto, Kenji ; Hino, Kazutoshi ; Oikawa, Takahito ; Hayakawa, Shinjiro ; Okuda, Tetsuji
著者ID
A1659
研究者ID
1000060548981
KUID
https://kuid-rm-web.ofc.kobe-u.ac.jp/search/detail?systemId=e9f03591548a21ad520e17560c007669
著者名
Asaoka, Satoshi
浅岡, 聡
アサオカ, サトシ
所属機関名
内海域環境教育研究センター
著者ID
A1639
研究者ID
1000090253020
KUID
https://kuid-rm-web.ofc.kobe-u.ac.jp/search/detail?systemId=4531f9dc669e5f83520e17560c007669
著者名
Okamura, Hideo
岡村, 秀雄
オカムラ, ヒデオ
所属機関名
内海域環境教育研究センター
著者名
Kim, Kyunghoi
著者名
Hatanaka, Yuzuru
著者名
Nakamoto, Kenji
著者名
Hino, Kazutoshi
著者名
Oikawa, Takahito
著者名
Hayakawa, Shinjiro
著者名
Okuda, Tetsuji
収録物名
Chemosphere
巻(号)
168
ページ
384-389
出版者
Elsevier
刊行日
2017-02
公開日
2019-03-01
抄録
Reducing hydrogen sulfide concentration in eutrophic marine sediments is crucial to maintaining healthy aquatic ecosystems. Managing fly ash, 750 million tons of which is generated annually throughout the world, is another serious environmental problem. In this study, we develop an approach that addresses both these issues by mixing coal fly ash from coal-fired power plants with blast furnace cement to remediate eutrophic sediments. The purpose of this study is to optimize the mixing ratio of coal fly ash and blast furnace cement to improve the rate of hydrogen sulfide removal based on scientific evidence obtained by removal experiments and XAFS, XRD, BET, and SEM images.In the case of 10 mg-S L-1 of hydrogen sulfide, the highest removal rate of hydrogen sulfide was observed for 87 wt% of coal fly ash due to decreased competition of adsorption between sulfide and hydroxyl ions. Whereas regarding 100 mg-S L-1, the hydrogen sulfide removal rate was the highest for 95 wt% of coal fly ash. However, for both concentrations, the removal rate obtained by 87 wt% and 95 wt% were statistically insignificant. The crushing strength of the mixture was over 1.2 N mm(-2) when the coal fly ash mixing ratio was less than 95 wt%. Consequently, the mixing ratio of coal fly ash was optimized at 87 wt% in terms of achieving both high hydrogen sulfide removal rate and sufficient crushing strength.
キーワード
Coal-fired power plant
Environmental remediation
Eutrophication
Sediment
Recycle
カテゴリ
内海域環境教育研究センター
学術雑誌論文
権利
©2017.
This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
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資源タイプ
journal article
言語
English (英語)
ISSN
0045-6535
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eISSN
1879-1298
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関連情報
DOI
https://doi.org/10.1016/j.chemosphere.2016.10.070
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