{"created":"2023-05-15T12:20:39.231470+00:00","id":11295,"links":{},"metadata":{"_buckets":{"deposit":"05eb7b95-92ca-4d68-9c3e-2cf7328a2720"},"_deposit":{"created_by":1,"id":"11295","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"11295"},"status":"published"},"_oai":{"id":"oai:kansai-u.repo.nii.ac.jp:00011295","sets":["528:1588:1592:1594"]},"author_link":[],"control_number":"11295","item_9_alternative_title_20":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"Flocculation of Fine Hematite in Aqueous Solution Containing Surface-Active Agents","subitem_alternative_title_language":"en"}]},"item_9_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1994","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"5","bibliographicPageEnd":"707","bibliographicPageStart":"701","bibliographicVolumeNumber":"20","bibliographic_titles":[{"bibliographic_title":"化学工学論文集","bibliographic_titleLang":"ja"}]}]},"item_9_description_4":{"attribute_name":"概要","attribute_value_mlt":[{"subitem_description":"水溶液中の微粒子は, 界面活性物質の添加によって固体の表面疎水性や表面電荷が変えられるとき, 条件によって凝集したり分散したりする.この研究では, 酸化鉄微粒子 (α-Fe<SUB>2</SUB>O<SUB>3</SUB>) の凝集現象が, オレイン酸ソーダと1-ドデカンスルホン酸ソーダの存在下で研究されている.凝集現象を説明するために, 界面活性剤の吸着量や酸化鉄のゼータ電位が測定されている.<BR>オレイン酸は10以下のpHで酸化鉄に物理的および化学的に吸着して, 大きい負の電荷を与える.pH3以下ではその低い溶解度のために負の電荷を持った微小油滴として存在し, 酸化鉄に吸着または付着する.1-ドデカンスルホン酸ソーダは, 酸化鉄の等電点以下のpHで物理的に吸着する.酸化鉄の凝集領域がpHと界面活性剤濃度の関数として図示されている.単分子層吸着以下の吸着が生じるとき酸化鉄は凝集傾向を示し, 単分子層吸着以上の吸着では酸化鉄は分散傾向を示した.","subitem_description_language":"ja","subitem_description_type":"Other"},{"subitem_description":"Fine solid particles in aqueous solution are flocculated in some cases or dispersed in other cases, when surface properties such as hydrophobicity and surface charge of the solid are changed by adding surface-active agents. In the present study, flocculation phenomena of fine hematite suspension are investigated in the presence of surface active agents such as sodium oleate and sodium salt of 1-dodecane sulphonic acid. Amounts of the surfactant adsorbed on hematite and the zeta potential of hematite are measured in order to explain the flocculation phenomena.<BR>Oleic acid can be physically and chemically adsorbed on hematite in the pH region below 10 to give a large negative charge to hematite. At pH less than 3, oleic acid exists as small oil droplets with negative charge due to its low solubility. These droplets are adsorbed or adhere to hematite. On the other hand, 1-dodecane sulphonic acid is physically adsorbed on hematite, especially below the pH of the point of zero charge of hematite. The flocculation domain of hematite as a function of pH and the concentration of surfactants is illustrated in the presence of two surfactants. When adsorption of surfactants less than a mono-layer takes place, hematite particles are flocculated. When adsorption more than a mono-layer occurs, hematite particles are dispersed.","subitem_description_language":"en","subitem_description_type":"Other"}]},"item_9_publisher_34":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"化学工学会","subitem_publisher_language":"ja"}]},"item_9_source_id_10":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN00037234","subitem_source_identifier_type":"NCID"}]},"item_9_source_id_8":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0386216X","subitem_source_identifier_type":"PISSN"}]},"item_9_version_type_17":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"open access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_abf2"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"芝田, 隼次","creatorNameLang":"ja"},{"creatorName":"Shibata, Junji","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"70067742","nameIdentifierScheme":"e-Rad","nameIdentifierURI":"https://nrid.nii.ac.jp/ja/nrid/1000070067742"}]},{"creatorNames":[{"creatorName":"玉腰, 博美","creatorNameLang":"ja"},{"creatorName":"Tamakoshi, Hiromi","creatorNameLang":"en"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2019-05-23"}],"displaytype":"detail","filename":"KU-1100-19940000-16.pdf","filesize":[{"value":"909.5 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"KU-1100-19940000-16.pdf","objectType":"fulltext","url":"https://kansai-u.repo.nii.ac.jp/record/11295/files/KU-1100-19940000-16.pdf"},"version_id":"aebdfe4e-9227-449e-9291-05eeb15e4df1"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"Flocculation","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Dispersion","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Suspension","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Sodium Oleate","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Sodium Salt of 1-Dodecane","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Sulphonic Acid","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Hematite","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"関西大学","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"Kansai University","subitem_subject_language":"en","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"界面活性剤の存在下での酸化鉄微粒子の凝集と分散","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"界面活性剤の存在下での酸化鉄微粒子の凝集と分散","subitem_title_language":"ja"}]},"item_type_id":"9","owner":"1","path":["1594"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2011-11-09"},"publish_date":"2011-11-09","publish_status":"0","recid":"11295","relation_version_is_last":true,"title":["界面活性剤の存在下での酸化鉄微粒子の凝集と分散"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-10-26T01:36:51.174634+00:00"}