{"created":"2023-05-15T12:20:39.624931+00:00","id":11304,"links":{},"metadata":{"_buckets":{"deposit":"b3df6209-059f-4fba-88ad-23694f71b430"},"_deposit":{"created_by":1,"id":"11304","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"11304"},"status":"published"},"_oai":{"id":"oai:kansai-u.repo.nii.ac.jp:00011304","sets":["528:1588:1592:1594"]},"author_link":["25366","25367","25368","25369","25370"],"control_number":"11304","item_9_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2005","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"5","bibliographicPageEnd":"337","bibliographicPageStart":"331","bibliographicVolumeNumber":"31","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":"共沸混合物に不揮発性の塩を添加すると気ー液平衡関係が変化して，相対揮発度に大きな影響をあ\nたえる現象は，気ー液平衡関係に及ぼす塩効果として広く知られている．硝酸ー水系は共沸混合物であり，通常の蒸留操作では濃縮が不可能である．本研究では，半導体製造工程や金属表面処理工程から排出される硝酸廃液からの硝酸の回収を目的として，硝酸ー水系の定圧気ー液平衡関係に及ぼす硝酸塩の添加効果を，この溶液の共沸組成（x=0–40 mol%）範囲で測定した．添加する塩はこれまで報告例（Ohe and Yokoyama, 1969）が少ない硝酸アルミニウム，硝酸マグネシウム，硝酸カルシウム，硝酸リチウムおよび硝酸ナトリウムなどの硝酸塩を用いた．いずれの硝酸塩を用いた場合も，気相中の硝酸濃度が増加する塩析効果を示し，塩を全溶液重量の30–50wt% 添加することにより，共沸点を消滅させることが可能であった．このことにより，低濃度硝酸廃液（共沸点以下の組成）からの蒸留による硝酸分離が可能となった．実験では，硝酸リチウムを50wt% 添加して希薄な硝酸水溶液から硝酸の蒸留分離および硝酸の濃縮について試験した結果，濃度5mol/dm3 の硝酸水溶液から約14mol/dm3 以上（収率72.2%）まで濃縮することが可能であった．","subitem_description_language":"ja","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 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Junji","creatorNameLang":"en"}],"nameIdentifiers":[{},{}]}]},"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-1100-20050000-19.pdf","filesize":[{"value":"465.9 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"KU-1100-20050000-19.pdf","url":"https://kansai-u.repo.nii.ac.jp/record/11304/files/KU-1100-20050000-19.pdf"},"version_id":"9a57415c-9799-4c78-ae63-d46e4c2ff33a"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"塩効果","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"硝酸","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"硝酸塩","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"気液平衡","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"濃縮","subitem_subject_language":"ja","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 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