JPH08104513A - Method of recovering silica contained in rice husks from treating solution treated by immersing rice husks - Google Patents

Method of recovering silica contained in rice husks from treating solution treated by immersing rice husks

Info

Publication number
JPH08104513A
JPH08104513A JP27694094A JP27694094A JPH08104513A JP H08104513 A JPH08104513 A JP H08104513A JP 27694094 A JP27694094 A JP 27694094A JP 27694094 A JP27694094 A JP 27694094A JP H08104513 A JPH08104513 A JP H08104513A
Authority
JP
Japan
Prior art keywords
rice husks
silica contained
mixed solution
treating solution
immersing
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.)
Pending
Application number
JP27694094A
Other languages
Japanese (ja)
Inventor
Takeko Suda
武子 須田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP27694094A priority Critical patent/JPH08104513A/en
Publication of JPH08104513A publication Critical patent/JPH08104513A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To efficiency recover a high purity silica contained in rice husks by a chemical treatment. CONSTITUTION: A mixed solution of hypochlorous acid and caustic soda is heated and the rice husks are immersed for about 20min. and the silica contained in the rice husks is dissolved in the mixed solution. Conc. sulfuric acid is added to the mixed solution dissolved of the silica and solid silica being water-insoluble and incombustible is recovered.

Description

【発明の詳細な説明】 １ モミガラには、多量の高純度のケイ酸が含まれてい
る。このケイ酸は、高品質セラミックの素材で有り、宇
宙時代にとって、利用価値が高い。そのために、高度の
工業技術を駆使してモミガラの含むケイ酸の、効率的な
有効利用の方法を目指して、研究が続けられている。そ
の方法の第一段階として共通している事は、モミガラを
焼いて灰にする事から始められている事である。この発
明は、モミガラを灰にすることなく直接処理するため
に、無駄がなく、効率よく処理出来るのが、特長の一つ
である。この発明は、従来の化学的常識を超えた処理方
法である事も、特長としている。DETAILED DESCRIPTION OF THE INVENTION 1 Rice husk contains a large amount of high-purity silicic acid. This silicic acid is a material of high quality ceramic and has high utility value in the space age. Therefore, research is continuing aiming at an efficient and effective utilization method of silicic acid contained in rice husk using advanced industrial technology. What is common as the first step of the method is that it begins with baking rice husks to ash. One of the features of the present invention is that waste chaff can be treated efficiently without waste because it is directly treated without turning it into ash. The present invention is also characterized in that it is a processing method that goes beyond conventional chemical common sense.

２ 例えば、濃度２％の次亜塩素酸ソーダーと、濃度４
％の苛性ソーダーの混合溶液を８０℃まで加熱して、こ
の混合溶液にモミガラを約２０分浸して、モミガラの含
有するケイ酸をこの混合溶液に溶解する。従来の化学的
常識からすれば、此処に生成するのは、水ガラスのはず
である。化学的常識では、水ガラスから、ケイ酸を回収
することは不可能とされてきた。この発明は、ケイ酸を
溶解した混合溶液に、濃硫酸を加えることにより、水に
不溶性で、尚且不燃性の固体、ケイ酸を回収出来る事を
特長としている。即ち、従来の化学的常識を超えた処理
方法であるといえる。濃硫酸で回収した固体には、炭化
した挟雑物が付着し、入り交じってもいるので、塩酸で
挟雑物を除去してから水洗いし、乾燥する。こうする事
により、高純度のケイ酸をモミガラから回収することが
出来るので、この発明は宇宙時代にむけて、大きく貢献
する、有意義な発明と言うことが出来る。2 For example, sodium hypochlorite with a concentration of 2% and a concentration of 4
% Caustic soda mixed solution is heated to 80 ° C., and chaffs are soaked in this mixed solution for about 20 minutes to dissolve silicic acid contained in chaff. From the conventional common sense of chemistry, water glass should be produced here. Chemical common sense has made it impossible to recover silicic acid from water glass. This invention is characterized in that by adding concentrated sulfuric acid to a mixed solution in which silicic acid is dissolved, water-insoluble solid and non-combustible solid, silicic acid, can be recovered. That is, it can be said that it is a processing method that goes beyond conventional chemical common sense. Since the carbonized impurities adhere to the solid collected with concentrated sulfuric acid and are mixed with each other, the impurities are removed with hydrochloric acid, washed with water, and then dried. By doing so, high-purity silicic acid can be recovered from rice husks, so this invention can be said to be a significant invention that contributes greatly to the space age.

３ 何故、化学的常識を超えた処理が可能なのかという
と、次亜塩素酸ソーダーと苛性ソーダーの混合溶液中に
は、水ガラスが生成したのでは無くて、混合溶液の相関
作用とモミガラから溶出した有機体の、触媒に似た作用
で、水ガラスに近い不安定な結合状態の物質が生成した
からで有る。3 The reason why it is possible to perform treatments beyond chemical common sense is that water glass was not formed in the mixed solution of sodium hypochlorite and caustic soda, and the correlation and chaffing of the mixed solution This is because a substance in an unstable bound state close to that of water glass was produced by the action of the eluted organisms similar to that of a catalyst.

Claims (1)

【特許請求の範囲】[Claims] モミガラをアルカリ溶液に浸して、モミガラが含有する
ケイ酸をアルカリ溶液で溶解し、ケイ酸が溶解したアル
カリ溶液を酸で処理することによって、ケイ酸を固体と
して回収する方法。A method of recovering silicic acid as a solid by immersing the chamomile in an alkaline solution, dissolving the silicic acid contained in the chamomile in the alkaline solution, and treating the alkaline solution in which the silicic acid is dissolved with an acid.
JP27694094A 1994-10-04 1994-10-04 Method of recovering silica contained in rice husks from treating solution treated by immersing rice husks Pending JPH08104513A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP27694094A JPH08104513A (en) 1994-10-04 1994-10-04 Method of recovering silica contained in rice husks from treating solution treated by immersing rice husks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP27694094A JPH08104513A (en) 1994-10-04 1994-10-04 Method of recovering silica contained in rice husks from treating solution treated by immersing rice husks

Publications (1)

Publication Number Publication Date
JPH08104513A true JPH08104513A (en) 1996-04-23

Family

ID=17576532

Family Applications (1)

Application Number Title Priority Date Filing Date
JP27694094A Pending JPH08104513A (en) 1994-10-04 1994-10-04 Method of recovering silica contained in rice husks from treating solution treated by immersing rice husks

Country Status (1)

Country Link
JP (1) JPH08104513A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000024478A (en) * 2000-02-16 2000-05-06 유재엽 Synthetic processing system for rice bran
KR100367839B1 (en) * 2000-07-13 2003-01-10 주식회사 이코바이오 the extracting method of silica from a herbaceous plant
JP2003529518A (en) * 2000-03-31 2003-10-07 アグリテック，インク． Precipitated silica and silica gel with or without deposited carbon from biomass ash solution and process
JP2007522069A (en) * 2004-02-13 2007-08-09 ナン，ゲリー，ロバート Soluble biogenic silica and uses thereof
JP2008207169A (en) * 2007-01-31 2008-09-11 Suminoe Textile Co Ltd Manufacturing method of white chaff ash
US7588745B2 (en) 2004-04-13 2009-09-15 Si Options, Llc Silicon-containing products
US7638108B2 (en) 2004-04-13 2009-12-29 Si Options, Llc High purity silicon-containing products
WO2012020938A2 (en) * 2010-08-13 2012-02-16 충남대학교산학협력단 Method for simultaneously preparing high-purity silica having fine structure and fiber
US8470279B2 (en) 2004-04-13 2013-06-25 Si Options, Llc High purity silicon-containing products and method of manufacture
WO2019222813A1 (en) 2018-05-25 2019-11-28 Agripower Australia Limited Method for extracting soluble si from an amorphous sio2 bearing material
WO2023190666A1 (en) * 2022-03-29 2023-10-05 ケイワート・サイエンス株式会社 Method for producing aqueous silicon compound solution

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000024478A (en) * 2000-02-16 2000-05-06 유재엽 Synthetic processing system for rice bran
JP2003529518A (en) * 2000-03-31 2003-10-07 アグリテック，インク． Precipitated silica and silica gel with or without deposited carbon from biomass ash solution and process
KR100367839B1 (en) * 2000-07-13 2003-01-10 주식회사 이코바이오 the extracting method of silica from a herbaceous plant
JP2007522069A (en) * 2004-02-13 2007-08-09 ナン，ゲリー，ロバート Soluble biogenic silica and uses thereof
US7638108B2 (en) 2004-04-13 2009-12-29 Si Options, Llc High purity silicon-containing products
US7588745B2 (en) 2004-04-13 2009-09-15 Si Options, Llc Silicon-containing products
US8048822B2 (en) 2004-04-13 2011-11-01 Si Options, Llc Method for making silicon-containing products
US8470279B2 (en) 2004-04-13 2013-06-25 Si Options, Llc High purity silicon-containing products and method of manufacture
JP2008207169A (en) * 2007-01-31 2008-09-11 Suminoe Textile Co Ltd Manufacturing method of white chaff ash
WO2012020938A2 (en) * 2010-08-13 2012-02-16 충남대학교산학협력단 Method for simultaneously preparing high-purity silica having fine structure and fiber
WO2012020938A3 (en) * 2010-08-13 2012-05-18 충남대학교산학협력단 Method for simultaneously preparing high-purity silica having fine structure and fiber
WO2019222813A1 (en) 2018-05-25 2019-11-28 Agripower Australia Limited Method for extracting soluble si from an amorphous sio2 bearing material
EP3802464A4 (en) * 2018-05-25 2022-03-09 Agripower Australia Limited Method for extracting soluble si from an amorphous sio2 bearing material
US11667534B2 (en) 2018-05-25 2023-06-06 Agripower Australia Limited Method for extracting soluble Si from an amorphous SiO2 bearing material
WO2023190666A1 (en) * 2022-03-29 2023-10-05 ケイワート・サイエンス株式会社 Method for producing aqueous silicon compound solution

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