Search Results 1-20 of 42

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  • SUPPLY AND CONSUMPTION MECHANSIM OF ASH (MINERAL) TO DEPOSITED MUD  [in Japanese]

    OTA Satoshi , YOSHIMURA Kazuki , NAKASHITA Sinya , HIBINO Tadashi

    … The purpose of this study is to clarify the organic properties of the sedimentary mud, which is the origin of odors, and to confirm the effect of GCA spraying on the surface mud of the target. … For this reason, the effect on the bottom mud of GCA was measured by measuring the redox potential in accordance with the chemical reaction that occurs in the mixed mud layer mixed with GCA and bottom mud according to the organic mud analysis. …

    Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 76(2), I_919-I_924, 2020

    J-STAGE 

  • CROSS SECTION DESIGN OF ARTIFICIAL TIDAL FLAT UTILIZING DREDGED SEDIMENT  [in Japanese]

    MASAOKA Takashi , OKADA Suguru , OIKAWA Takahito , HIBINO Tadashi

    … In this study, we have investigated the applicabilities of glanulated coal ash (GCA) as the tidal flat material to enhance the productivities of asari clam using dredge mud for the shallow place worring about the low neutrialnt condition. …

    Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering) 76(2), I_810-I_815, 2020

    J-STAGE 

  • MECHANISM OF SEDIMENT DEPOSITION INTO GRANULATED COAL ASH LAYER  [in Japanese]

    NAKASHITA Shinya , MITO Yugo , OIKAWA Takahito , HIBINO Tadashi

    … <p> This study focus on the long-term improvement effect of sediment and water quality using granulated coal ash as sand covering material. …

    Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering) 76(2), I_804-I_809, 2020

    J-STAGE 

  • SUPPLY AND CONSUMPTION MECHANISM OF ASH (MINERAL) TO DEPOSITED MUD  [in Japanese]

    守田 悠究 , 永間 健太郎 , 正岡 孝 , 日比野 忠史

    土木学会論文集. B2, 海岸工学 Journal of Japan Society of Civil Engineers. 土木学会海岸工学委員会 編 75(2), I_1093-1098, 2019

  • MICROORGANISMS ATTACHED TO GRANULATED COAL ASH AND VERIFICATION OF THE RELATIONSHIP WITH TIDAL FLAT SEDIMENT ENVIRONMENT  [in Japanese]

    NOHARA Hideaki , NISHIURA Jun , OIKAWA Takahito , HIBINO Tadashi

    … <p> It is confirmed that property of the deposited organic mud on the tidal flat with granulated coal ash (GCA) changes, it is suggested that they are related to microorganisms attached to GCA. … However, It is not clarified relationship between GCA and effects. …

    Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 75(2), I_1159-I_1164, 2019

    J-STAGE 

  • SELECTION OF COMBUSTION ASH MINERAL SOURCE ESSENTISL FOR SEDIMENT ENVIRONMENT AND CHEMICAL CHARACTERISTICS BY HYDRATION SILIDIFICATION  [in Japanese]

    OKABE Manaka , NOHARA Hideaki , NAKASHITA Shinya , HIBINO Tadashi

    … Effect of combustion ash elute minerals have a very important role in the activity of organisms, and it was possible to confirm reproduction of benthic organisms by scattering GCA (granulated coal ash) on ages sediment. …

    Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 75(2), I_1033-I_1038, 2019

    J-STAGE 

  • SUPPLY AND CONSUMPTION MECHANISM OF ASH (MINERAL) TO DEPOSITED MUD  [in Japanese]

    MORITA Haruku , NAGAMA Kentaro , MASAOKA Takashi , HIBINO Tadashi

    … <p> A granulated coal ash (GCA) was scattered onto organically-enriched tidal flats deposited along the Kyobashi River flowing through the center of Hiroshima City. … It has been observed that the GCA layer is improving the ecosystem by forming algae that feed on benthic animals. …

    Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 75(2), I_1093-I_1098, 2019

    J-STAGE 

  • APPROACH OF SHALLOW BOTTOM CONSTRUCTION IN THE AREA WITH SLUDGE ORIGINATING FROM SEWAGE DEPOSITS AND EVALUTION OF BENTHIC ANIMALS REPRODUCTION IN THE CONSTRUCTED SHALLOW BOTTOM  [in Japanese]

    NOHARA Hideaki , SUGANO Takanori , MITO Yugo , HIBINO Tadashi

    … <p> Shallow bottom was constructed by using granulated coal ash (GCA) as a material in the inner harbor where benthic organisms can not live due to the influx of organic matter from sewage.Based on thesurvey results of benthic animals for about 3 years on the tidal flat implemented in advance, the condition of animal regeneration in the shallow bottom was evaluated, and the organic matter purification capacity to the sewage load by shallow bottom was calculated.In …

    Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering) 75(2), I_539-I_544, 2019

    J-STAGE 

  • STUDY ON THE METHOD FOR IMPROVING WATER AND SEDIMENT QUALITY IN SEWAGE WATER INTO TIDAL URBAN RIVER  [in Japanese]

    柿沼 太貴 , 野原 秀彰 , 日比野 忠史 , 山田 正

    土木学会論文集. B2, 海岸工学 Journal of Japan Society of Civil Engineers. 土木学会海岸工学委員会 編 74(2), I_1483-1488, 2018

  • EVALUATION OF BOTTOM WATER QUALITY IMPROVEMENT AFTER SCATTERING GRANULATED COAL ASH IN A TIDAL WATER CHANNEL  [in Japanese]

    野原 秀彰 , 及川 隆仁 , 中本 健二 , 日比野 忠史

    土木学会論文集. B2, 海岸工学 Journal of Japan Society of Civil Engineers. 土木学会海岸工学委員会 編 74(2), I_1477-1482, 2018

  • DESIGN AND CONSTRUCTION OF WATER PURIFICATION STRUCTURE IN A TRIBUTARY OF THE PASIG RIVER (PHILIPPINES)  [in Japanese]

    OKABE Manaka , John Andrew A. Tiria , TAKATA Hiroki , Augustus C. Resurreccion , HIBINO Tadashi

    … In the proposed technology, granulated coal ash (GCA) which has been widely used in water and sediment treatments was used. … In the Estero de San Miguel, GCA-used water purification structure (15m in length, 1.5m in width, 1m in height, around 25m<sup>3</sup> … of GCA in total) was constructed on January 2018. …

    Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 74(5), I_547-I_552, 2018

    J-STAGE 

  • Removal rate of nutrient salts with bamboo charcoal-contained granulated coal ash  [in Japanese]

    Okabe Manaka , Nishimura Kaichi , Touch Narong , Hibino Tadashi

    … ・水質汚濁問題に対して様々なニーズに合ったGCAの改善効果を発揮できれば,GCAの万能化に繋がる.本研究ではGCAによる栄養塩類の除去効果を向上させる目的として,石炭灰に竹炭を混合させた高性能なGCA(BC-GCA)を開発し,BC-GCAの溶出特性およびBC-GCAによる栄養塩類除去効果を室内実験により明ら …

    Proceedings of the Annual Conference of Japan Society of Material Cycles and Waste Management 29(0), 207, 2018

    J-STAGE 

  • STUDY ON THE METHOD FOR IMPROVING WATER AND SEDIMENT QUALITY IN SEWAGE WATER INTO TIDAL URBAN RIVER  [in Japanese]

    KAKINUMA Daiki , NOHARA Hideaki , HIBINO Tadashi , YAMADA Tadashi

    … In this study, the effect of improving water and sediment quality will be verified by the inter-gravel contact structure using the granulated coal ash. … The effect of the granulated coal ash was evaluated from change of sediment deposited in sediment trap. …

    Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 74(2), I_1483-I_1488, 2018

    J-STAGE 

  • EVALUATION OF BOTTOM WATER QUALITY IMPROVEMENT AFTER SCATTERING GRANULATED COAL ASH IN A TIDAL WATER CHANNEL  [in Japanese]

    NOHARA Hideaki , OIKAWA Takahito , NAKAMOTO Kenji , HIBINO Tadashi

    … Thus, high rate of organic matter decomposition occurs, causing several environmental problems such as malodors and deteriorations of sediment and water quality.This study is aiming at examining the improvements of sediment and water quality after scattering granulated coal ash (GCA) into the water channel. … adsorbed onto GCA-adsorbed sediment. …

    Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 74(2), I_1477-I_1482, 2018

    J-STAGE 

  • APPLICATION OF RECYCLED MATERIALS TO ARTIFICIAL TIDAL FLAT: QUANTITATIVE EVALUATION OF ECOSYSTEM FUNCTIONS  [in Japanese]

    MITO Yugo , HIBINO Tadashi , OKADA Tomonari , ENDO Toshio , IEJIMA Osamu , KESYO Junichiro , HAGINO Michiaki , SUGANO Takanori , KURISU Kazuyuki , NAKAMOTO Kenji , NAKAMURA Yoshiyuki

    …  In this study, the field tests were performed by applying ferronickel slag (FNS) and granulated coal ash (GCA) to artificial tidal flats, and corresponding ecosystem functions were quantitatively evaluated. … In contrast, results obtained for GCA were different from those of sand in terms of reduced dissolved-sulfide concentration in pore water and changes in biota. …

    Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 74(2), I_1297-I_1302, 2018

    J-STAGE 

  • DECOMPOSITION MECHANISMS OF ORGANIC MATTER DEPOSITED IN THE LAYER OF ALKALINE MATERIALS  [in Japanese]

    YAMAJI Satoshi , NISHIMURA Kaichi , TOUCH Narong , HIBINO Tadashi

    …  Steel slag and granulated coal ash (GCA) have been widely used to cover bottom sediment for improving sediment and water quality. … In this study, dissolution characterisitcs of these materials are reviewed, and filed experiments are conducted to examine the decomposition mechanisms of organic matter in steel slag and GCA layers. …

    Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 74(2), I_1195-I_1200, 2018

    J-STAGE 

  • EVALUATION OF ORGANIC PROPERTIES OF THE SLUDGE REMEDIATED BY ALKALINE GRANULATED MATERIAL  [in Japanese]

    森本 優希 , 林 利洋 , 中本 健二 , 日比野 忠史

    水工学論文集 Annual journal of Hydraulic Engineering, JSCE 61, Ⅰ_1219-1224, 2017

  • EVALUATION OF ORGANIC PROPERTIES OF THE SLUDGE REMEDIATED BY ALKALINE GRANULATED MATERIAL  [in Japanese]

    MORIMOTO Yuki , HAYASHI Toshihiro , NAKAMOTO Kenji , HIBINO Tadashi

    … To date, we have proposed some methods using granulated coal ash (GCA), which is alkaline granulated material (AGM) for recovering the environments. … It was confirmed that GCA mollified the reduction level of the sludge, and improved the mobility of pore water. … The results also ensured that the substratum and water environments were improved after applying GCA. …

    Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 73(4), I_1219-I_1224, 2017

    J-STAGE 

  • Characteristics of granulated coal ash-bamboo powder mixture as a soil improving material  [in Japanese]

    山地 智司 , 高田 大貴 , TOUCH NARONG , 日比野 忠史

    … 用できれば高い経済効果が得られるが,竹粉発酵に伴う有機酸は土壌を酸性化させている.一方,底質・水質改善に用いた石炭灰層造粒物(GCA)はpHの上昇,栄養塩類や酸素消費物質の固定効果があるが,GCAには有用な微生物や栄養源が含まれていない.GCAと竹粉を併用して利用できれば,土壌酸性化の解消のみならず,GCAの効果を向上させる可能性が高い. …

    Proceedings of the Annual Conference of Japan Society of Material Cycles and Waste Management 28(0), 193, 2017

    J-STAGE 

  • MECHANISMS OF PHOSPHATE IMMOBILIZATION BY GRANULATED COAL ASH  [in Japanese]

    MORIMOTO Yuki , TOUCH Narong , HIBINO Tadashi

    …  Granulated coal ash (GCA) is an alkaline material made from fly ash, which mainly comprised of SiO<sub>2</sub>, Al<sub>2</sub>O<sub>3</sub>, and CaO. … It has been reported that scattering GCA on sea bottom sediment can suppress the release of nutrient salts from the sediment into bottom water. …

    Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering) 73(2), I_941-I_946, 2017

    J-STAGE 

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