Hiroshi Masamoto, Atsushi Matsukiyo, M. Shigematsu, Y. Matsufuji, R. Yanase
{"title":"Suppression of Hydrogen Sulfide Release from Waste Plasterboard Disposal in a Landfill-type Lysimeter","authors":"Hiroshi Masamoto, Atsushi Matsukiyo, M. Shigematsu, Y. Matsufuji, R. Yanase","doi":"10.3985/JJSMCWM.1110801","DOIUrl":"https://doi.org/10.3985/JJSMCWM.1110801","url":null,"abstract":"","PeriodicalId":432877,"journal":{"name":"Journal of The Japan Society of Material Cycles and Waste Management","volume":"99 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123785237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Study of Nonwoven Fabric Made from Waste FRP-derived Glass Fibers","authors":"Takashi Hirose, Ichikawa Tomohiro, Youichi Iwasaki, Ogasawara Daiji, Saito Kazushi, Hiromi Tsushima, Katsuji Shibata","doi":"10.3985/JJSMCWM.21.126","DOIUrl":"https://doi.org/10.3985/JJSMCWM.21.126","url":null,"abstract":"本研究は，リサイクル技術の開発が急務な廃棄物である廃FRPから常圧溶解法を用いてリサイクルガラス繊維を得，それを素材としたリサイクルガラス不織布の基本的特性評価を目的として行った。具体的内容として，1)廃FRPより分離・回収して素材化したリサイクルガラス繊維の物性評価，2)素材化したリサイクルガラス繊維を原料としたリサイクルガラス不織布の物性評価を行った。その結果，素材化したリサイクルガラス繊維は，長さ25mmで綿状の外観を示し，約92%の純度を有していることを確認した。作製したリサイクルガラス不織布は，一般的なガラスマットよりも厚みのばらつきは少なかった。またリサイクルガラス不織布を用いたFRPは，既存のFRPと比較して，繊維体積含有率が数%低く，引張強度が約70%であった。","PeriodicalId":432877,"journal":{"name":"Journal of The Japan Society of Material Cycles and Waste Management","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121354324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Shota Iino, Katsuyuki Takahashi, Takashi Shoji, Y. Kashima, Y. Koyama, Takashi Yamamoto, M. Osako
Radioactive cesium concentrations in flue gas are measured using the official analytical method stipu-lated by the Ministry of the Environment. Using this method, radioactive cesium is analyzed for dust collected by filters and fluids collected in impingers. Although filters are known to collect sufficient radioactive cesium in flue gas, no detailed data are available for their ability to collect ultrafine particulate matter. Therefore, this study was conducted to evaluate the official analytical method by measuring the number concentration of particles in the actual incinerator flue gas. Results demonstrate that the number concentration of ultrafine particles (particles with < 0 . 3 μ m diameter) at the bag filter inlet is 10 6 cm − 3N , although it is 10 2 cm − 3N at the outlet of the impinger. This finding demonstrates that approximately 99 . 99 % of the ultrafine particles can be captured using the official analytical method. Furthermore, when the radioactive cesium in the collected particles at the outlet of the impinger was analyzed, its concentration was found to be below the limits of detection. This finding confirms that the official analytical method is appropriate for taking samples of radioactive cesium in flue gas.
{"title":"Evaluation of Method for Radioactive Cesium in Flue Gas by Measurement of Particle Number Concentrations","authors":"Shota Iino, Katsuyuki Takahashi, Takashi Shoji, Y. Kashima, Y. Koyama, Takashi Yamamoto, M. Osako","doi":"10.3985/JJSMCWM.29.175","DOIUrl":"https://doi.org/10.3985/JJSMCWM.29.175","url":null,"abstract":"Radioactive cesium concentrations in flue gas are measured using the official analytical method stipu-lated by the Ministry of the Environment. Using this method, radioactive cesium is analyzed for dust collected by filters and fluids collected in impingers. Although filters are known to collect sufficient radioactive cesium in flue gas, no detailed data are available for their ability to collect ultrafine particulate matter. Therefore, this study was conducted to evaluate the official analytical method by measuring the number concentration of particles in the actual incinerator flue gas. Results demonstrate that the number concentration of ultrafine particles (particles with < 0 . 3 μ m diameter) at the bag filter inlet is 10 6 cm − 3N , although it is 10 2 cm − 3N at the outlet of the impinger. This finding demonstrates that approximately 99 . 99 % of the ultrafine particles can be captured using the official analytical method. Furthermore, when the radioactive cesium in the collected particles at the outlet of the impinger was analyzed, its concentration was found to be below the limits of detection. This finding confirms that the official analytical method is appropriate for taking samples of radioactive cesium in flue gas.","PeriodicalId":432877,"journal":{"name":"Journal of The Japan Society of Material Cycles and Waste Management","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122583580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
There is little environmental monitoring data or documentation of the materials being disposaled at the many old landfill sites existing in Japan. We tried to clarify the level of temporary environmental impact in and around a landfill by measuring the concentration of heavy metals within various sediments. The site for this case study was at the uppermost stream of an alluvial valley plain in the eastern part of Boso Peninsula. No liner exists in the landfill and a pond lies about 100 m downstream from the site. Concentration trends were analyzed for heavy metals such as Pb, Cu, Zn, and Cs-137 found in the bottom sediments of the pond. As a result, the temporal changes of the environmental pollution were clarified in accordance with land use around the site. In addition, to collect reference data, the study also measured concentration of heavy metals in the drilled cores of the landfill and surface soil samples between the landfill and the pond, as well as bottom sediments from another pond and the surface soil surrounding the landfill. Water quality of the groundwater and the two ponds was also analyzed. The trend for heavy metal concentrations in the bottom sediments is a very useful indicator for interpreting environmental changes in and around the landfill.
{"title":"Temporal Interpretation of Environmental Pollution around Landfill Site Using Core of Bottom Sediments from Pond","authors":"Kazuo Kamura, M. Ishiwata, N. Kihou, M. Kurihara","doi":"10.3985/JJSMCWM.21.134","DOIUrl":"https://doi.org/10.3985/JJSMCWM.21.134","url":null,"abstract":"There is little environmental monitoring data or documentation of the materials being disposaled at the many old landfill sites existing in Japan. We tried to clarify the level of temporary environmental impact in and around a landfill by measuring the concentration of heavy metals within various sediments. The site for this case study was at the uppermost stream of an alluvial valley plain in the eastern part of Boso Peninsula. No liner exists in the landfill and a pond lies about 100 m downstream from the site. Concentration trends were analyzed for heavy metals such as Pb, Cu, Zn, and Cs-137 found in the bottom sediments of the pond. As a result, the temporal changes of the environmental pollution were clarified in accordance with land use around the site. In addition, to collect reference data, the study also measured concentration of heavy metals in the drilled cores of the landfill and surface soil samples between the landfill and the pond, as well as bottom sediments from another pond and the surface soil surrounding the landfill. Water quality of the groundwater and the two ponds was also analyzed. The trend for heavy metal concentrations in the bottom sediments is a very useful indicator for interpreting environmental changes in and around the landfill.","PeriodicalId":432877,"journal":{"name":"Journal of The Japan Society of Material Cycles and Waste Management","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116508658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Preparation of Bamboo Activated Carbon using Low-temperature Carbonization and Air Oxidation","authors":"Miki Sakuma, Y. Amano, M. Machida","doi":"10.3985/JJSMCWM.22.337","DOIUrl":"https://doi.org/10.3985/JJSMCWM.22.337","url":null,"abstract":"原料のモウソウチクを短冊状の竹チップにし，窒素気流中，500℃，昇温速度25℃/minで管状炉を用いて2時間炭化し竹炭を調製した。次にカリウムを多く含む灰分を残した状態の調製した竹炭を180℃，280℃および380℃で2時間空気酸化した。細孔特性はBET法，αs-plot法およびt-plot法にて，表面官能基はBoehm滴定にて求めた。表面積は未酸化竹炭が250m2/gであったのに対し，180℃の空気酸化で340m2/gに，380℃で680m2/gまで増大した。細孔容積は380℃の空気酸化により未酸化竹炭の0.16mL/gが0.31mL/gまで発達した。また380℃で空気酸化を行った竹炭は，1000℃での脱気処理によっても表面積・細孔容積ともに微増した。竹炭の表面官能基量は空気酸化により増加し，酸化温度の上昇に比例して増加した。380℃の空気酸化により表面官能基 (特にカルボキシル基) は未酸化竹炭の0.02mmol/Lから1.19mmol/Lまで増加した。低温炭化に続く空気酸化により，未酸化竹炭と比較して表面積・細孔容積ともに大きく，表面官能基の豊富な竹活性炭を調製できることを明らかにした。","PeriodicalId":432877,"journal":{"name":"Journal of The Japan Society of Material Cycles and Waste Management","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127771276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Diverse Perceptions of Extended Producer Responsibility (EPR) and Implications for Policy Dialogue and Policy Development in Japan:","authors":"T. Tasaki, Tsunako Matsumoto","doi":"10.3985/jjsmcwm.33.178","DOIUrl":"https://doi.org/10.3985/jjsmcwm.33.178","url":null,"abstract":"","PeriodicalId":432877,"journal":{"name":"Journal of The Japan Society of Material Cycles and Waste Management","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133236189","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Reduction Characteristics of Iron Oxide using Carbonaceous Materials Derived from Wastes","authors":"Yasuaki Ueki, Ryo Yoshiie, I. Naruse","doi":"10.3985/jjsmcwm.33.11","DOIUrl":"https://doi.org/10.3985/jjsmcwm.33.11","url":null,"abstract":"","PeriodicalId":432877,"journal":{"name":"Journal of The Japan Society of Material Cycles and Waste Management","volume":"181 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133310126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yuji Shiraishi, Naohiro Nakataya, Kazuya Sajiki, Michitaka Furubayashi, N. Nakatsuka, J. Hayashi, F. Akamatsu
{"title":"Numerical Simulation of Stoker-type Incinerator including Waste Bed Combustion and NO X Prediction using a Detailed Chemical Kinetics Mechanism","authors":"Yuji Shiraishi, Naohiro Nakataya, Kazuya Sajiki, Michitaka Furubayashi, N. Nakatsuka, J. Hayashi, F. Akamatsu","doi":"10.3985/JJSMCWM.29.80","DOIUrl":"https://doi.org/10.3985/JJSMCWM.29.80","url":null,"abstract":"","PeriodicalId":432877,"journal":{"name":"Journal of The Japan Society of Material Cycles and Waste Management","volume":"216 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133457570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Material Recycling Technologies for Mixed Residual Plastics from Waste Household Appliances","authors":"Y. Matsuo, Yasuhiro Endo, A. Fujita, S. Ogasawara, Y. Iseki, Y. Hasebe","doi":"10.3985/JJSMCWM.20.303","DOIUrl":"https://doi.org/10.3985/JJSMCWM.20.303","url":null,"abstract":"特定家庭用機器再商品化法 (家電リサイクル法) の施行により，家電4品目 (冷蔵庫，洗濯機，エアコン，テレビ) に再商品化率が義務付けられ，その再商品化率の向上には，プラスチックのマテリアルリサイクルは重要な技術である。これまで，プラスチックマテリアルリサイクルの推進を目的に，家電リサイクルプラントに回収した手解体可能な部品 (冷蔵庫・野菜ケース，洗濯機・水槽) を用いて，新材相当の物性まで回復させ，家電製品に適用してきた。本研究では，手解体の困難なプラスチック部品であり，埋立あるいは焼却処分されてきた“使用済み家電混合プラスチック”から選別回収したポリプロピレン (PP) リサイクル材の機械的特性および異物量を評価した結果，PPリサイクル材はPP純度99.8%以上で，新材相当の機械的物性値および物性バラツキ (変動係数) を有し，家電製品に適用可能な材料であった。また，PPリサイクル材は，金属成分が微量残留しており，新材相当の耐熱性を得るためには，金属不活性剤の添加が不可欠であった。","PeriodicalId":432877,"journal":{"name":"Journal of The Japan Society of Material Cycles and Waste Management","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122982755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Production of Food Resources through the Enzyme Agent Treatment of Scallop Waste","authors":"T. Obara, Momoko Takahashi","doi":"10.3985/JJSMCWM.27.196","DOIUrl":"https://doi.org/10.3985/JJSMCWM.27.196","url":null,"abstract":"","PeriodicalId":432877,"journal":{"name":"Journal of The Japan Society of Material Cycles and Waste Management","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121685929","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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