JP5319223B2 - 機能粉およびそれを用いた水処理方法 - Google Patents
機能粉およびそれを用いた水処理方法 Download PDFInfo
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- JP5319223B2 JP5319223B2 JP2008246102A JP2008246102A JP5319223B2 JP 5319223 B2 JP5319223 B2 JP 5319223B2 JP 2008246102 A JP2008246102 A JP 2008246102A JP 2008246102 A JP2008246102 A JP 2008246102A JP 5319223 B2 JP5319223 B2 JP 5319223B2
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/005—Pretreatment specially adapted for magnetic separation
- B03C1/01—Pretreatment specially adapted for magnetic separation by addition of magnetic adjuvants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y25/00—Nanomagnetism, e.g. magnetoimpedance, anisotropic magnetoresistance, giant magnetoresistance or tunneling magnetoresistance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/288—Treatment of water, waste water, or sewage by sorption using composite sorbents, e.g. coated, impregnated, multi-layered
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
- C02F1/488—Treatment of water, waste water, or sewage with magnetic or electric fields for separation of magnetic materials, e.g. magnetic flocculation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
- H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
- H01F1/06—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys in the form of particles, e.g. powder
- H01F1/061—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys in the form of particles, e.g. powder with a protective layer
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
- H01F1/09—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials mixtures of metallic and non-metallic particles; metallic particles having oxide skin
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/20—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/33—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials mixtures of metallic and non-metallic particles; metallic particles having oxide skin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C2201/00—Details of magnetic or electrostatic separation
- B03C2201/18—Magnetic separation whereby the particles are suspended in a liquid
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/285—Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/32—Hydrocarbons, e.g. oil
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Power Engineering (AREA)
- Organic Chemistry (AREA)
- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Dispersion Chemistry (AREA)
- Hydrology & Water Resources (AREA)
- Nanotechnology (AREA)
- Crystallography & Structural Chemistry (AREA)
- Analytical Chemistry (AREA)
- Water Treatment By Sorption (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Description
本発明の機能粉に用いられる磁性体粒子は、磁性体からなるものであれば、特に限定されるものではない。用いられる磁性体は、室温領域において強磁性を示す物質であることが望ましい。しかし、本発明の実施に当ってはこれらに限定されるものではなく、強磁性物質を全般的に用いることができ、例えば鉄、および鉄を含む合金、磁鉄鉱、チタン鉄鉱、磁硫鉄鉱、マグネシアフェライト、コバルトフェライト、ニッケルフェライト、バリウムフェライト、などが挙げられる。これらのうち水中での安定性に優れたフェライト系化合物であればより効果的に本発明を達成することができる。例えば磁鉄鉱であるマグネタイト(Fe3O4)は安価であるだけでなく、水中でも磁性体として安定し、元素としても安全であるため、水処理に使用しやすいので好ましい。また、磁性体粒子は、球状、多面体、不定形など種々の形状を取り得るが特に限定されない。用いるに当って望ましい磁性体粒子の粒径や形状は、製造コストなどを鑑みて適宜選択すれば良く、特に球状または角が丸い多面体構造が好ましい。鋭角な角を持つ粒子であると、表面を被覆するポリマー層を傷つけ、樹脂複合体の形状を維持しにくくなってしまうことがあるためである。これらの磁性粉は、必要であればCuメッキ、Niメッキなど、通常のメッキ処理が施しされていてもよい。
本発明による水処理方法は、不純物を含んでなる水から、不純物を分離するものである。ここで、不純物とは、処理しようとする水に含まれており、その水を利用するに当たって除去すべきものを意味する。また、このように被処理水から分離する有機物を便宜的に不純物と呼んでいるが、その有機物を再利用するために分離するものであってもよい。
磁性体粒子(平均粒子径10μm)を準備し、その表面を洗浄して、水酸基を形成させた。具体的には、エタノール中に磁性体粒子を添加し、室温で攪拌した後、5,000rpmで3分間遠心分離を行って上澄みを除去した後、さらに超純水で同様に3回洗浄を行った。その後、100℃で30分乾燥させ、完全に水分を除去した。
オクタン酸をデカン酸に変更した以外は実施例1と同様にして機能粉を合成し、同様の方法で評価した。
オクタン酸をテトラデカン酸に変更した以外は実施例1と同様にして機能粉を合成し、同様の方法で評価した。
オクタン酸をステアリン酸に変更した以外は実施例1と同様にして機能粉を合成し、同様の方法で評価した。
オクタン酸を安息香酸に変更した以外は実施例1と同様にして機能粉を合成し、同様の方法で評価した。
オクタン酸を2−ナフタレンカルボン酸に変更した以外は実施例1と同様にして機能粉を合成し、同様の方法で評価した。
オクタン酸をプロピオン酸に変更した以外は実施例1と同様にして機能粉を合成し、同様の方法で評価した。プロピオン酸は、その炭素数が3であり、本発明においては疎水性基の範囲外である。
オクタン酸をヘキサン酸に変更した以外は実施例1と同様にして機能粉を合成し、同様の方法で評価した。ヘキサン酸は、その炭素数が6であり、本発明においては疎水性基の範囲外である。
精製された磁性体粒子に、デカントリエトキシシランを反応させた。すなわち、洗浄した磁性体粒子3gに大過剰のデカントリエトキシシランを加え室温で10時間反応させた。反応後、未反応デカントリエトキシシランをエタノールで3回、超純水を用いて3回洗浄した。実施例1と同様の方法で評価した。
Claims (8)
- 表面に疎水性基および親水性基が配置された磁性体粒子からなる水処理用機能粉であって、前記疎水性基が炭素数が8以上28以下の脂肪族基および炭素数6以上15以下の芳香族基から選ばれるものであり、前記親水性基が水酸基およびカルボキシル基から選ばれるものであり、前記疎水性基の数をM、前記親水性基の数をNとしたとき、0.2<M/N<0.8の関係を満たすことを特徴とする水処理用機能粉。
- 前記磁性体粒子の平均粒子径が0.1〜20μmである、請求項1に記載の機能粉。
- 前記疎水性基が炭化水素基を有する、請求項1または2に記載の機能粉。
- 前記親水基が、水酸基、またはカルボキシル基である、請求項1〜3のいずれか1項に記載の機能粉。
- 前記磁性体粒子表面をカップリング剤で表面処理した後、疎水性基を有する有機物および親水性基を有する有機物の少なくともひとつを反応させることにより得られた、請求項1〜4のいずれか1項に記載の機能粉。
- 不純物を含んでなる水に、請求項1〜5のいずれか1項に記載の機能粉を分散させ、前記機能粉の表面に前記不純物を吸着させ、吸着後の機能粉を磁力を利用して前記水から分離することを含んでなることを特徴とする、水処理方法。
- 前記の不純物を含んでなる水が工業排水である、請求項6に記載の水処理方法。
- 前記の吸着後の樹脂複合体を、メタノール、エタノール、n−プロパノール、イソプロパノール、アセトン、テトラヒドロフラン、n−ヘキサン、シクロヘキサン、およびそれらの混合物から選ばれるいずれか1種類の有機溶媒により洗浄して再生し、さらなる水処理に利用する請求項6または7に記載の水処理方法。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008246102A JP5319223B2 (ja) | 2008-09-25 | 2008-09-25 | 機能粉およびそれを用いた水処理方法 |
US12/562,708 US8518265B2 (en) | 2008-09-25 | 2009-09-18 | Functional powder and water treatment method employing the same |
Applications Claiming Priority (1)
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JP2008246102A JP5319223B2 (ja) | 2008-09-25 | 2008-09-25 | 機能粉およびそれを用いた水処理方法 |
Publications (3)
Publication Number | Publication Date |
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JP2010075825A JP2010075825A (ja) | 2010-04-08 |
JP2010075825A5 JP2010075825A5 (ja) | 2011-06-23 |
JP5319223B2 true JP5319223B2 (ja) | 2013-10-16 |
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JP2008246102A Expired - Fee Related JP5319223B2 (ja) | 2008-09-25 | 2008-09-25 | 機能粉およびそれを用いた水処理方法 |
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US (1) | US8518265B2 (ja) |
JP (1) | JP5319223B2 (ja) |
Families Citing this family (2)
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DE102010064139A1 (de) * | 2010-12-23 | 2012-06-28 | Siemens Aktiengesellschaft | Verfahren und Vorrichtung zur Trennung von Öl und Wasser aus einer Öl/Wasser-Emulsion |
US11172873B2 (en) | 2018-05-17 | 2021-11-16 | The Procter & Gamble Company | Systems and methods for hair analysis |
Family Cites Families (6)
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JP3038199B1 (ja) | 1998-12-18 | 2000-05-08 | 川崎重工業株式会社 | 磁気分離による油回収方法および油回収用磁性体 |
JP4121419B2 (ja) * | 2003-05-20 | 2008-07-23 | 二葉商事株式会社 | 粘土系磁性吸着剤およびその製造方法 |
US8715739B2 (en) * | 2005-10-24 | 2014-05-06 | Purdue Research Foundation | Polymer coated microparticles |
JP4580359B2 (ja) * | 2006-03-27 | 2010-11-10 | 三洋化成工業株式会社 | 磁性ナノ粒子複合体 |
US7906147B2 (en) * | 2006-10-12 | 2011-03-15 | Nanoprobes, Inc. | Functional associative coatings for nanoparticles |
JP5244474B2 (ja) * | 2008-06-27 | 2013-07-24 | 株式会社東芝 | 機能性粒子およびそれを用いた水処理方法 |
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2008
- 2008-09-25 JP JP2008246102A patent/JP5319223B2/ja not_active Expired - Fee Related
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2009
- 2009-09-18 US US12/562,708 patent/US8518265B2/en not_active Expired - Fee Related
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US8518265B2 (en) | 2013-08-27 |
JP2010075825A (ja) | 2010-04-08 |
US20100072138A1 (en) | 2010-03-25 |
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