JPH02290231A - Chemically treated ceramic membrane - Google Patents
Chemically treated ceramic membraneInfo
- Publication number
- JPH02290231A JPH02290231A JP11093789A JP11093789A JPH02290231A JP H02290231 A JPH02290231 A JP H02290231A JP 11093789 A JP11093789 A JP 11093789A JP 11093789 A JP11093789 A JP 11093789A JP H02290231 A JPH02290231 A JP H02290231A
- Authority
- JP
- Japan
- Prior art keywords
- ceramic membrane
- membrane
- potential
- cloggy
- clogging
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000012528 membrane Substances 0.000 title claims abstract description 42
- 239000000919 ceramic Substances 0.000 title claims abstract description 26
- 239000000126 substance Substances 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 7
- 230000002209 hydrophobic effect Effects 0.000 abstract description 6
- 239000000725 suspension Substances 0.000 abstract description 3
- 150000001282 organosilanes Chemical class 0.000 abstract description 2
- 239000002028 Biomass Substances 0.000 abstract 1
- 238000001962 electrophoresis Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 8
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000000855 fermentation Methods 0.000 description 3
- 230000004151 fermentation Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 240000004808 Saccharomyces cerevisiae Species 0.000 description 2
- 235000014680 Saccharomyces cerevisiae Nutrition 0.000 description 2
- 230000001580 bacterial effect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000000813 microbial effect Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- SJECZPVISLOESU-UHFFFAOYSA-N 3-trimethoxysilylpropan-1-amine Chemical compound CO[Si](OC)(OC)CCCN SJECZPVISLOESU-UHFFFAOYSA-N 0.000 description 1
- BHTZPJXABISXPB-UHFFFAOYSA-N 4-triethoxysilylbutan-2-amine Chemical compound CCO[Si](OCC)(OCC)CCC(C)N BHTZPJXABISXPB-UHFFFAOYSA-N 0.000 description 1
- 241000270299 Boa Species 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- WSFMFXQNYPNYGG-UHFFFAOYSA-M dimethyl-octadecyl-(3-trimethoxysilylpropyl)azanium;chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCCCC[N+](C)(C)CCC[Si](OC)(OC)OC WSFMFXQNYPNYGG-UHFFFAOYSA-M 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920005597 polymer membrane Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000001846 repelling effect Effects 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- ACECBHHKGNTVPB-UHFFFAOYSA-N silylformic acid Chemical compound OC([SiH3])=O ACECBHHKGNTVPB-UHFFFAOYSA-N 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は醗酵液等の濾過に使用しても目詰まりを生じに
くい化学処理セラミック膜に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a chemically treated ceramic membrane that is less likely to become clogged when used for filtration of fermentation liquids and the like.
（従来の技術）
分＃膜として現在一般に使用されている膜は高分子膜、
セラミック膜ともに活性層と支持層から横成されており
、以前の膜に比較して目詰まりが減少している．しかし
膜を構成している素材分子は必ずしも利用液に対して最
適な条件にあるとはいえず、特に醗酵液等の固液分離に
長時間用いると膜が目詰まりし、濾過２ｉｔ！が減少す
ることは避けられなかった。(Prior art) The membranes currently commonly used as separation membranes are polymer membranes,
Both ceramic membranes are made up of an active layer and a supporting layer, which reduces clogging compared to previous membranes. However, the material molecules that make up the membrane are not necessarily in the optimal conditions for the liquid to be used, and if used for a long time, especially for solid-liquid separation such as fermentation liquid, the membrane will become clogged, resulting in filtration of 2 IT! A decline was inevitable.
（発明が解決しようとする課題）
本発明は上記のような従来の問題点を解決して、目詰ま
りが生じにくい膜を提供するために完成されたものであ
る。(Problems to be Solved by the Invention) The present invention has been completed in order to solve the above conventional problems and provide a membrane that is less likely to be clogged.
（課題を解決するための手段）
上記の課題を解決するためなされた第１の発明は、目詰
まり物質が持つ電位と正負が等しい電位を膜表面とその
内部のいずれか一方又は双方に持たせたことを特徴とす
るものである。また同一の課題を解決するためになされ
た第２の発明は、水に対する親和性が目詰まり物質とは
逆となるよう膜表面とその内部のいずれか一方又は双方
を化学的に変化させたことを特徴とするものである。(Means for Solving the Problems) A first invention made to solve the above problems is to provide the membrane surface and/or its interior with a potential that is equal in positive and negative to the potential of the clogging substance. It is characterized by: A second invention made to solve the same problem is to chemically change either or both of the membrane surface and its interior so that its affinity for water is opposite to that of clogging substances. It is characterized by:
上記のように第１の発明においては、目詰まり物質の電
位がプラスであるかマイナスであるかを測定し、目詰ま
り物質の電位と正負が等しい電位をセラミ・ンク膜の表
面に与える。ここで目詰まり物質の電位（ゼータ電位）
は、後記する実施例のように、目詰まり物質の懸濁液に
電位をかけて電気床動させ、その泳動方向により知るこ
とができる。またセラミノク膜の表面に電位を持たせる
には、本出願人の特開昭６３−２３００８８号公報に開
示されているように、セラミック膜の表面とその内部の
いずれか一方又は双方をオルガノンランにより化学処理
する方法を取ることができる。As described above, in the first invention, whether the potential of the clogging substance is positive or negative is measured, and a potential having the same positive or negative potential as the potential of the clogging substance is applied to the surface of the ceramic ink film. Here, the potential of the clogging substance (zeta potential)
This can be determined by applying an electric potential to a suspension of the clogging substance and causing it to move on an electric bed, as in the examples described later, and from the direction of migration. In addition, in order to impart a potential to the surface of the ceramic membrane, as disclosed in Japanese Patent Application Laid-Open No. 63-230088 by the present applicant, the surface of the ceramic membrane and/or the inside thereof can be coated with organonlan. Chemical treatment can be used.
即ら、目詰まり物質が正の電位を持つためにセラミンク
膜の表面とその内部のいずれか一方又は双方に正の電位
を与えるためには、例えばオルガノノリルアミンで化学
処理すればよい。またセラミンク膜の表面とその内部の
いずれか一方又は双方は本来は負の電位を持つものであ
るが、この負の電位を更に増大させるためには、例えば
シリルカルポン酸による処理を行えばよい。That is, since the clogging substance has a positive potential, in order to apply a positive potential to either or both the surface and the inside of the ceramic membrane, chemical treatment with organonolylamine, for example, may be performed. Further, either or both of the surface and the interior of the ceramic membrane originally has a negative potential, but in order to further increase this negative potential, treatment with silylcarboxylic acid, for example, may be performed.
第２の発明においては、目詰まり物質が親水性であると
きにはセラミック膜の表面とその内部のいずれか一方又
は双方を疎水性に処理し、逆に目詰まり物質が疎水性で
あるときにはセラミンク膜の表面とその内部のいずれか
一方又は双方を親水性に処理する。セラミック膜の表面
とその内部のいずれか一方又は双方を親水性に処理する
場合には、上記のように表面の電位を正の電位もしくは
負の電位に処理すればよい。また、セラミック膜を疎水
性に処理するにはオルガノシランにより化学処理する。In the second invention, when the clogging substance is hydrophilic, one or both of the surface and the inside of the ceramic membrane is treated to be hydrophobic, and conversely, when the clogging substance is hydrophobic, the ceramic membrane is treated to be hydrophobic. Either or both of the surface and the inside thereof are treated to be hydrophilic. When treating either or both the surface and the interior of the ceramic membrane to be hydrophilic, the potential of the surface may be made positive or negative as described above. Furthermore, in order to make the ceramic membrane hydrophobic, it is chemically treated with organosilane.
例えばジメチルオクタデシル−３トリメトキシルシリル
プロビルアンモニウムクロライドを用いる。For example, dimethyloctadecyl-3trimethoxylsilylpropylammonium chloride is used.
（作用）
このように構成された本発明の化学処理セラミック膜は
、醗酵液から菌体と生成物を固液分離する場合等に使用
されるものであるが、セラミック＋１Ｗの表面とその内
部のいずれか一方又は双方に目詰まり物質と同一極性の
電位、あるいは目詰まり物質と水に対する親和性が異な
る物質を与えたものであるので、目詰まり物質とセラミ
ック膜の表面とその内部のいずれか一方又は双方とは互
いに反発し、その結果として目詰まりが生じにくくなる
。(Function) The chemically treated ceramic membrane of the present invention configured as described above is used for solid-liquid separation of bacterial cells and products from a fermentation liquid. Either one or both of them is given a potential of the same polarity as the clogging substance, or a substance with a different affinity for water from the clogging substance, so either the clogging substance, the surface of the ceramic membrane, or the inside thereof Alternatively, both may repel each other, and as a result, clogging becomes less likely to occur.
また本発明においてはセラミック膜を用いているため耐
熱性、耐薬品性にも優れている。Furthermore, in the present invention, since a ceramic film is used, it has excellent heat resistance and chemical resistance.
次に本発明の実施例を示す。Next, examples of the present invention will be shown.
（実廁例）
〔微生物表面電位測定〕
’／ＰＤ墳地でサツ力口マイセス セレビジェ（Ｓａｃ
ｃｈａｒｏｍ！，Ｉｃｅｓ ｃｅｒｅｖｉｓｉａｅ）協
会７号を３０℃、２日間振とう培養後、本菌を墳養液か
ら遠心分離して集菌した。菌体をＨＣＩ ， ＫＣＩ
でＰＨ ３．０、電気伝導度０．５ ミリジーメンス
となした冫容ｌ＆に１．５〜３．０×１０４個／一の濃
度となるようにｉｇ濁した。ＦＡ， Ｅ液をプリノクス
セル中に入れ通電した。顕微鏡にて微生物粒子の電気泳
動速度を測定するとともに荷電の正負を判定し、泳動速
度の測定値より次式によりζ−ポテンシャルを求めた。(Actual example) [Microbial surface potential measurement] '/PD Mound
Charom! , Ices cerevisiae) Society No. 7 at 30° C. for 2 days with shaking, the bacteria were collected by centrifugation from the culture solution. HCI, KCI of bacterial cells
The solution was turbid at a concentration of 1.5 to 3.0 x 104 particles/1 to a solution prepared with a pH of 3.0 and an electrical conductivity of 0.5 mSiemens. FA and E solutions were placed in a Prinox cell and electricity was applied. The electrophoretic velocity of the microbial particles was measured using a microscope, and the positive or negative nature of the charge was determined, and the ζ-potential was determined from the measured electrophoretic velocity using the following equation.
ζ＝ （４πμ／Ｄ）（Ａ／ｉ）Ｃ − ｕＸ９Ｘ１０
”｛旦し、ζ：ゼークボテンシャノレ（ｍＶ）μ：液の
粘性係数（ボアズ）
Ｄ：液の誘導率（−）
Ａ：電位勾配に直角方向のセル
断面積（ｃｄ）
ｉ：セル中を流れる電流（ｍＡ）
Ｃ：懸濁液の電気伝導度（Ｓ）
Ｕ：粒子の泳動速度（ ｃｍ ／ ｓｅｃ）その結果、
本菌のく一電位は＋９． １ｍＶであった。ζ= (4πμ/D) (A/i)C − uX9X10
``{tanshi, ζ: Seekbotenchanolé (mV) μ: Viscosity coefficient of liquid (Boas) D: Inductivity of liquid (-) A: Cell cross-sectional area in the direction perpendicular to the potential gradient (cd) i: Cell Current flowing through it (mA) C: Electrical conductivity of the suspension (S) U: Migration speed of particles (cm/sec) As a result,
The potential of this bacterium is +9. It was 1 mV.
セラミック膜（平均孔径゛ｏ，２μ、膜面積５０ｅｄ）
を６００Ｉｎｉ中のトルエンに浸漬させ、沸騰石を添加
後６０ｍｌのシラン剤ＫＢＥ−９０３ （信越化学社製
γ−アミノブ口ビルトリエトキシシラン）を添加し、４
時間還流を行いながら加熱した。反応後、この溶媒をす
てトルエン臭がなくなるまでセラミソク膜をアセ１・ン
で洗浄したものを以下の実験に供した〔膜性能検討］
上記のように化学処理し、十に荷電した膜と無処理の膜
を用い平膜実験機に取付け〔微生物表面電位〕に示した
方法で培養した菌体サッカロマイセス セレビジエ（Ｓ
ａｃｃｈａｒｏｍｙｃｅｓ ｃｅｒｅｖｉｓｉａｅ）協
会７号培養液をクロスフローで流し、フランクスの低下
を経時的に測定した。その結果を第１回に示した。Ceramic membrane (average pore diameter o, 2μ, membrane area 50ed)
was immersed in toluene in 600Ini, boiling stone was added, and 60ml of silane agent KBE-903 (γ-aminobutyltriethoxysilane manufactured by Shin-Etsu Chemical Co., Ltd.) was added.
The mixture was heated under reflux for an hour. After the reaction, this solvent was discarded and the ceramic membrane was washed with acetic acid until the toluene odor disappeared and was used for the following experiment [membrane performance study]. Saccharomyces cerevisiae (S.
accharomyces cerevisiae) Association No. 7 culture solution was flowed in a cross flow, and the decrease in Franks was measured over time. The results were shown in Part 1.
以上の結果のように酵母の電位と同符号に荷電させた膜
は無処理の膜に比べて透過流量の低下が鈍くまた１．４
倍程度の透過流看が得られた。As shown in the above results, the membrane charged to the same potential as the yeast has a slower decrease in the permeation flow rate than the untreated membrane, and 1.4
About twice as much permeation flow was obtained.
（発明の効果）
本発明は以上に説明したように、目詰まり物質を反発さ
せて目詰まりの発生を防止することに成功したものであ
るから、バイオリアクター等の運転を定常的に行わせる
に適した化学処理セラミンク膜として、産業の発展に寄
与するところは極めて大である。(Effects of the Invention) As explained above, the present invention succeeds in repelling clogging substances and preventing the occurrence of clogging. As a suitable chemically treated ceramic membrane, it can greatly contribute to the development of industry.
第１図は第１の発明の実施例の化学処理セラミック膜の
透過流量の経時的変化を示すグラフである。
窩４９〒間（瞬FIG. 1 is a graph showing the change over time in the permeation flow rate of the chemically treated ceramic membrane of the first embodiment of the invention. fossa 49〒(shun)
Claims (1)
面とその内部のいずれか一方又は双方に持たせたことを
特徴とする化学処理セラミック膜。 ２、水に対する親和性が目詰まり物質とは逆となるよう
膜表面とその内部のいずれか一方又は双方を化学的に変
化させたことを特徴とする化学処理セラミック膜。[Scope of Claims] 1. A chemically treated ceramic membrane characterized in that either or both of the membrane surface and its interior are provided with a potential that is equal in positive and negative to the potential possessed by the clogging substance. 2. A chemically treated ceramic membrane characterized in that either or both of the membrane surface and its interior have been chemically changed so that its affinity for water is opposite to that of clogging substances.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1110937A JP2547252B2 (en) | 1989-04-28 | 1989-04-28 | Chemically treated ceramic membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1110937A JP2547252B2 (en) | 1989-04-28 | 1989-04-28 | Chemically treated ceramic membrane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02290231A true JPH02290231A (en) | 1990-11-30 |
| JP2547252B2 JP2547252B2 (en) | 1996-10-23 |
Family
ID=14548365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1110937A Expired - Lifetime JP2547252B2 (en) | 1989-04-28 | 1989-04-28 | Chemically treated ceramic membrane |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2547252B2 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6384614A (en) * | 1986-09-26 | 1988-04-15 | Aisin Seiki Co Ltd | Filter |
| JPS63236772A (en) * | 1987-03-23 | 1988-10-03 | 工業技術院長 | Negative charge type inorganic porous body |
| JPS63287504A (en) * | 1987-05-19 | 1988-11-24 | Ngk Insulators Ltd | Separation membrane |
-
1989
- 1989-04-28 JP JP1110937A patent/JP2547252B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6384614A (en) * | 1986-09-26 | 1988-04-15 | Aisin Seiki Co Ltd | Filter |
| JPS63236772A (en) * | 1987-03-23 | 1988-10-03 | 工業技術院長 | Negative charge type inorganic porous body |
| JPS63287504A (en) * | 1987-05-19 | 1988-11-24 | Ngk Insulators Ltd | Separation membrane |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2547252B2 (en) | 1996-10-23 |
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