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METHOD FOR USING ADSORBENT, AND ADSORBENT SET

外国特許コード F210010399
整理番号 (S2019-0561-N0)
掲載日 2021年5月7日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2020JP034928
国際公開番号 WO 2021054329
国際出願日 令和2年9月15日(2020.9.15)
国際公開日 令和3年3月25日(2021.3.25)
優先権データ
  • 特願2019-171201 (2019.9.20) JP
発明の名称 (英語) METHOD FOR USING ADSORBENT, AND ADSORBENT SET
発明の概要(英語) A method for using an adsorbent, in which a cationic adsorbent made of a cationic polymer gel and an anionic adsorbent made of an anionic polymer gel are made to coexist in an aqueous solution containing negative ions and positive ions, the negative ions are caused to be adsorbed by ionized cationic groups of the cationic polymer gel, and the positive ions are caused to be adsorbed by ionized anionic groups of the anionic polymer gel.
従来技術、競合技術の概要(英語) BACKGROUND ART
Waste water from plants and the like contains nitric acid, phosphoric acid, ammonium, and the like, and has adverse effects on the water environment such as enrichment, and removal of these is required. In addition, due to the lack of rare metal resources or the like, separation and recovery of metals from waste water discharged by crushing noble metals at the time of production of automobiles and electronic equipment is desired.
The use of adsorbents that adsorb harmful substances and valuable substances in the removal and recovery of these substances from such aqueous solutions has been proposed. Examples thereof include adsorbents including ionic polymer compounds capable of adsorbing ions in an aqueous solution, anionic polymer compounds capable of adsorbing cations, and cationic polymer compounds capable of adsorbing anions (for example, Patent Documents 1 and 2). Furthermore, there are also adsorbents having both a cationic group and an anionic group in the molecule (for example, Patent Documents 3 and 4).
  • 出願人(英語)
  • ※2012年7月以前掲載分については米国以外のすべての指定国
  • HIROSHIMA UNIVERSITY
  • 発明者(英語)
  • GOTO Takehiko
国際特許分類(IPC)
指定国 National States: AE AG AL AM AO AT AU AZ BA BB BG BH BN BR BW BY BZ CA CH CL CN CO CR CU CZ DE DJ DK DM DO DZ EC EE EG ES FI GB GD GE GH GM GT HN HR HU ID IL IN IR IS IT JO JP KE KG KH KN KP KR KW KZ LA LC LK LR LS LU LY MA MD ME MG MK MN MW MX MY MZ NA NG NI NO NZ OM PA PE PG PH PL PT QA RO RS RU RW SA SC SD SE SG SK SL ST SV SY TH TJ TM TN TR TT TZ UA UG US UZ VC VN WS ZA ZM ZW
ARIPO: BW GH GM KE LR LS MW MZ NA RW SD SL SZ TZ UG ZM ZW
EAPO: AM AZ BY KG KZ RU TJ TM
EPO: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
OAPI: BF BJ CF CG CI CM GA GN GQ GW KM ML MR NE SN ST TD TG

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