SEKITO Tomoo

写真a

Affiliation

Engineering educational research section Department of Civil and Environmental Engineerring Program

Title

Associate Professor

External Link

Degree 【 display / non-display

  • Doctor (Engineering) ( 2001.12   Hokkaido University )

Research Areas 【 display / non-display

  • Social Infrastructure (Civil Engineering, Architecture, Disaster Prevention) / Environmental systems for civil engineering

 

Papers 【 display / non-display

  • リン酸およびMg溶液を用いた飛灰からの鉛溶出抑制に関する研究

    土手裕,武吉慶樹,関戸知雄

    宮崎大學工學部紀要   50   33 - 40   2021.9

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    Publishing type:Research paper (bulletin of university, research institution)  

  • セメント固化体からの易溶解性物質溶出モデルパラメータへの固化体作成条件の影響

    土手裕,竹本昌弘,関戸知雄

    宮崎大學工學部紀要   50   23 - 31   2021.9

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    Publishing type:Research paper (bulletin of university, research institution)  

  • Improving Potassium Recovery from Swine Wastewater and Evaluating the Effect of Recovered Solution on Biological Treatment Reviewed

    Dote Yutaka, Sekito Tomoo

    Journal of the Japan Society of Material Cycles and Waste Management   31 ( 0 )   38 - 46   2020.9

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:Japan Society of Material Cycles and Waste Management  

    In order to improve the recovery rate of potassium (K) from swine wastewater in the simultaneous recovery of nitrogen (N), phosphorus (P) and potassium, a recovery experiment was carried out with a pH range from 10 to 11. Further, to evaluate biological treatment of the solution after recovery, semi-batch treatment with activated sludge was investigated. It was found that with the conditions of pH 10.5, P/(N+K) of 1.3, and Mg/P of 1.2 in molar ratio, N and K could be recovered at a rate of over 80 % and P concentration could be kept under the discharge standard. With these conditions, an N recovery rate of 81 % was reached, much higher than the previous recovery rate of 67 % and indicating improvement of the K recovery rate. An N recovery rate of 89 % was reached, so a high recovery rate was maintained. Furthermore, the net P recovery rate was 39-79 %, indicating that more P could be recovered than was added. TOC could be removed from the solution after recovery at a pH of 10.5, the same as from swine wastewater, without neutralizing the solution. No biological denitrification was required to meet the discharge standard for nitrogen.

    DOI: 10.3985/jjsmcwm.31.38

  • 酸化マグネシウム系不溶化材による火山噴出物由来河川堆積物の不溶化処理に関する研究 Reviewed

    土手 裕, 伊藤 健一, 関戸 知雄, 尾花 誠一, 藤井 真吾

    環境工学研究論文集   57 ( 7 )   III_393 - III_401   2020.8

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    Language:Japanese   Publishing type:Research paper (scientific journal)  

  • Factors influencing the period of participation in a waste bank system in Malang City, Indonesia Reviewed

    Ayumi Matsuyama, Tri Budi Prayogo, Yutaka Dote

    Journal of Material Cycles and Waste Management volume   22   1614 - 1619   2020.5

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: https://doi.org/10.1007/s10163-020-01049-8

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Books 【 display / non-display

  • インバース・マニュファクチャリング ハンドブック

    インバース・マニュファクチャリングフォーラム監修 ( Role: Joint author)

    丸善株式会社   2004.3 

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    Language:Japanese Book type:Scholarly book

  • 循環型社会構築の戦略

    田中信壽,田中勝 編著 ( Role: Joint author)

    中央法規出版   2002.3 

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    Language:Japanese Book type:Scholarly book

  • 廃棄物処理総論

    田中勝 監訳代表( Role: Joint author)

    エヌ・ティーエス  1998.6 

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    Language:Japanese Book type:Scholarly book

MISC 【 display / non-display

  • 湿原を含む家畜埋却地周辺の環境モニタリング(<特集>2010年口蹄疫-残された課題を中心に-)

    鈴木祥広,竹下伸一,関戸知雄,稲垣仁根

    日本草地学会誌   58 ( 4 )   269 - 276   2013.1

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)   Publisher:日本草地学会  

  • ドイツにおける埋立地に関する基準と廃棄物処理の動向

    関戸知雄、土手裕

    廃棄物学会誌   19 ( 1 )   31 - 40   2008.1

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    Language:Japanese   Publishing type:Research paper, summary (national, other academic conference)   Publisher:廃棄物学会  

  • Erratum to "Application of a gas-solid fluidized bed separator for shredded municipal bulky solid waste separation" [Waste Management 26 (2006) 1422-1429] (DOI:10.1016/j.wasman.2005.10.015)

    Sekito T., Matsuto T., Tanaka N.

    Waste Management   27 ( 10 )   2007.7

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (bulletin of university, research institution)   Publisher:Waste Management  

    DOI: 10.1016/j.wasman.2006.12.001

    Scopus

  • 畜舎排水処理施設におけるエストロゲンの実態調査

    鈴木祥広、中村孝洋、小山久男、関戸知雄、土手裕、増田純雄

    水処理技術   47 ( 1 )   17 - 22   2006.1

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    Language:Japanese   Publishing type:Research paper, summary (national, other academic conference)   Publisher:日本水処理技術研究会  

  • 都市ごみリサイクルとその技術・仕組みについて-粗大ごみについて-

    田中信壽、松藤敏彦、関戸知雄

    資源と環境   9 ( 2 )   135 - 144   2000.5

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    Language:Japanese   Publishing type:Research paper, summary (national, other academic conference)   Publisher:産業技術総合研究所  

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Presentations 【 display / non-display

  • EFFECT OF EXTERNAL CONCENTRATION ON THE LEACHING CONCENTRATION OF SOLUBLE SALTS FROM CEMENT SOLIDIFIED FLY ASH

    Dote Yutaka, Sekito Tomoo

    Proceedings of the Annual Conference of Japan Society of Material Cycles and Waste Management  2021  Japan Society of Material Cycles and Waste Management

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    Event date: 2021

    Language:Japanese   Presentation type:Oral presentation (general)  

    CiNii Research

  • Geochemical modeling of readily soluble ions in cement solidified ash materials International conference

    Jose Rodolfo Santiago, Tomoo Sekito, Yutaka Dote

    Proceedings of the Annual Conference of Japan Society of Material Cycles and Waste Management  2021.10  Japan Society of Material Cycles and Waste Management

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    Event date: 2021

    Language:English   Presentation type:Oral presentation (general)  

  • Reaerch on coliform group growth suppression of coal bottom ash

    Mabe Tetsushi, Sekito Tomoo, Dote Yutaka

    Proceedings of the Annual Conference of Japan Society of Material Cycles and Waste Management  2021  Japan Society of Material Cycles and Waste Management

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    Event date: 2021

    Language:Japanese   Presentation type:Oral presentation (general)  

    <p>In this study, coliform group growth suppression efficiency of coal bottom ash (Clinker Ash CA) generated from a thermal power plant was investigated to develop a method of effective utilization. The mechanism of coliform group growth suppression was also investigated. The CA was added to sample solutions made from treated <i>sewage water</i> and the number of coliform group was measured by the BGLB method, and the reduction rate was examined. As a result, by adding 10g of CA to 200mL of 100-fold diluted sample solution, 100 % of coliform group was removed. The smaller particle size of CA showed higher removal efficiency on the coliform group growth suppression. It was found that coliform group growth suppression might be occurred on the solid surface of CA.</p>

    CiNii Research

  • 廃石膏ボードおよび廃ガラスを用いた固化体強度に関する研究

    石津 直輝, 関戸 知雄, 土手 裕, 李 春鶴, 遠藤 紘徳

    廃棄物資源循環学会研究発表会 

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    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  • Leaching behavior of elements in recycled roadbed material using solidified boiler fly ash

    Jose RODOLFO Santiago, Tomoo Sekito, Yutaka Dote

    廃棄物資源循環学会研究発表会 

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    Event date: 2020.9

    Language:Japanese   Presentation type:Poster presentation  

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Grant-in-Aid for Scientific Research 【 display / non-display

  • インドネシアのごみ銀行と集団回収による家庭ごみ資源回収システムの評価

    2016.04 - 2018.03

    科学研究費補助金  挑戦的萌芽研究

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    Authorship:Principal investigator 

    本研究では,インドネシア・マラン市を事例とし,ごみ銀行および集団回収による資源回収システムという2つの家庭ごみからの資源回収の方式に対して,住民の満足度,協力度,資源回収率,コストバランス,物質フローを明らかにする。これらの資源回収システムは,ここ数年,インドネシアで提案・実践され,自治体も資金援助をしている。しかし,それぞれの方式に対しての研究はこれまでに実施されておらず,非効率な資源回収方法が展開されている非常に可能性が高い。本研究の結果により,今後東南アジアで実施するべき資源回収方式を明らかにすることができ,資源の循環に貢献すると期待される。

  • 口蹄疫等による家畜の大量埋却処分地から発生する環境負荷発生量予測に関する研究

    2011.04 - 2014.03

    科学研究費補助金  基盤研究(C)

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    Authorship:Principal investigator 

    平成22年度に宮崎県で発生した口蹄疫を背景に、大量の家畜を埋却処分した埋却地から発生する汚染物質による環境影響について、実験により明らかにする。実験では、カラム実験、バッチ分解実験により汚染物質(浸出水による有機汚濁物質、腐敗性ガス)の発生速度、発生量を明らかにする。数値モデルでは、特に地下水への影響について考慮し、2次元の不飽和浸透式と、有機物および窒素化合物の分解・吸着による減衰を考慮した物質移動式により、埋却地下部から浸透した汚染物質の挙動を予測する。以上の結果を適切な埋却方法提案につなげる。