FR2612801A1 - Use of micronised and dried plants as adsorbents for organic matter in solution or emulsion in water - Google Patents

Use of micronised and dried plants as adsorbents for organic matter in solution or emulsion in water Download PDF

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Publication number
FR2612801A1
FR2612801A1 FR8704432A FR8704432A FR2612801A1 FR 2612801 A1 FR2612801 A1 FR 2612801A1 FR 8704432 A FR8704432 A FR 8704432A FR 8704432 A FR8704432 A FR 8704432A FR 2612801 A1 FR2612801 A1 FR 2612801A1
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Prior art keywords
plants
water
emulsion
organic matter
micronised
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FR8704432A
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French (fr)
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LOUCHE YVES
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LOUCHE YVES
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Priority to FR8704432A priority Critical patent/FR2612801A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D15/00—Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
    • B01J20/24—Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives
    • 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
    • C02F1/286—Treatment of water, waste water, or sewage by sorption using natural organic sorbents or derivatives thereof

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  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

Use of micronised plants as adsorbent for the organic matter dissolved or in emulsion in water. Use of a type of micronised powder of treated plants ending with a product characterised by: - its particle size - its specific surface - its hemicellulose content - the degree of polymerisation of the cellulose of which it consists - its content of matter extracted from wood, such as lignin - its water content. The finished product thus exhibits a high adsorptivity for organic matter dissolved or in emulsion in water.

Description

DESCRIPTION
Utilisation d'un certain type de poudre micronisée de végétaux comme adsorbant de matières organiques dissoutes ou en émulsion dans l'eau. DESCRIPTION
Use of a certain type of micronized plant powder as an adsorbent for dissolved organic matter or as an emulsion in water.

Les poudres de végétaux micronisés ne présentant pas, normalement, les caractéristiques leur permettant d'être utilisées dans les procédés de transfert de masse.Micronized plant powders do not normally have the characteristics allowing them to be used in mass transfer processes.

La poudre pour laquelle un brevet d'utilisation est demandé se caractérise par - sa granulométrie inférieure à 74 Fm - sa surface développée supérieure à 1000 cm2/g - sa teneur en hémicelluloses nulle après lavage à liteau - le degré de polymérisation de la cellulose qui la compose inférieur à 650 - sa teneur en lignine résiduelle inférieure à 5 X - sa siccité qui doit être supérieure à 92 P - sa solubilité dans liteau devra être nulle.The powder for which a patent for use is sought is characterized by - its particle size less than 74 Fm - its developed surface greater than 1000 cm2 / g - its hemicellulose content zero after washing with a batten - the degree of polymerization of the cellulose which the compound less than 650 - its residual lignin content less than 5 X - its dryness which must be greater than 92 P - its solubility in strip must be zero.

Pour qu'un matériau soit un adsorbant, il ne suffit pas qu'il présente une certaine surface développée mais que cette surface développée ait une certaine énergie autorisant un bon transfert de masse de la phase liquide à la surface de l'adsorbant notamment en libérant les micropores de sa surface.For a material to be an adsorbent, it is not enough that it has a certain developed surface but that this developed surface has a certain energy allowing a good mass transfer from the liquid phase to the surface of the adsorbent, in particular by releasing micropores on its surface.

Pour qu' unie poudre de végétaux micronisés puisse avoir de telles caractéristiques, il faut - qu'elle ait une granulométrie faible - qu'elle présente une grande surface spécifique - que cette surface soit microporeuse - qu'elle puisse être mise en suspension dans liteau - qu'elle n'apporte pas de matières organiques propres - qu'elle ne soit pas soluble dans l'eau. So that a micronized plant powder powder can have such characteristics, it must - it has a small particle size - it has a large specific surface - that this surface is microporous - that it can be suspended in batten - that it does not bring clean organic matter - that it is not soluble in water.

Afin d'obtenir une telle poudre, on devra procéder comme suit a - Prédéchiqueter les végétaux, de préférence les tiges b - Préimprégner ces végétaux avec une solution ionique c - Soumettre ces végétaux à une pression de 35 bars ou plus et une température de 230OC ou plus pendant au moins 90 secondes avant de leur faire subir une détente brutale. Ce procédé est connu sous le nom d'autohydrolyse flash.In order to obtain such a powder, it will be necessary to proceed as follows a - Pre-shred the plants, preferably the stems b - Pre-impregnate these plants with an ionic solution c - Submit these plants to a pressure of 35 bars or more and a temperature of 230OC or longer for at least 90 seconds before subjecting them to a sudden relaxation. This process is known as flash self-hydrolysis.

d - laver la poudre obtenue à l'eau et à l'eau/dioxane afin d'éliminer les hémi celluloses, la majeure partie de la lignine, des acides gras et résiniques. Cette opération rendra ce matériau extrêmement microporeux et en éliminera toutes les matières solubles dans l'eau rendant ainsi cette poudre, ultérieurement, insoluble dans l'eau.  d - wash the powder obtained with water and water / dioxane in order to eliminate hemi celluloses, most of the lignin, fatty and resin acids. This operation will make this material extremely microporous and remove all the water-soluble materials from it, thus making this powder subsequently insoluble in water.

e - Séchage en poudre permettant d'éliminer totalement l'eau absorbée par les micropores. Cette poudre séchée présentera une énergie de surface considérablement supérieure à celle de la même poudre mais humide.e - Powder drying to completely eliminate the water absorbed by the micropores. This dried powder will have a surface energy considerably higher than that of the same powder but moist.

Les applications industrielles sont évidentes en particulier, l'élimination de matières organiques en solution dans les effluents ou dans les circuits de process de papeterie, cartonnerie. The industrial applications are obvious in particular, the elimination of organic matter in solution in the effluents or in the process circuits of stationery, cardboard.

Claims (3)

REVENDICATIONCLAIM 1) Adsorbant de matières organiques dissoutes ou en émulsion dans liteau, caractérisé en ce qu'il consiste en une poudre micronisée de végétaux, présentant les caractéristiques suivantes - sa granulométrie inférieure à 74 um - sa surface spécifique supérieure à 1000 cm2/g - son degré de polymérisation inférieur à 650 - sa teneur en hémicellulose soluble dans liteau froide1) Adsorbent of dissolved organic matter or in emulsion in a batten, characterized in that it consists of a micronized powder of plants, having the following characteristics - its particle size less than 74 µm - its specific surface greater than 1000 cm2 / g - bran degree of polymerization less than 650 - its hemicellulose content soluble in a cold strip nulle - sa solubilité dans liteau nulle - sa siccité supérieure à 92 % zero - its solubility in strip zero - its dryness greater than 92% 2) Procédé de préparation de l'adsorbant selon la revendication 1. caractérisé en ce qu'il consiste à - prédéchiqueter les végétaux pour en faciliter le chargement - charger ces végétaux prédéchiquetés dans le réacteur d' hydrolyse flash - préimprégner ces végétaux prédéchiquetés avec une solution ionique - injecter la vapeur à haute pression (au moins 35 bars et 2300 C) - après 90 secondes ou plus détendre brutalement - le matériau obtenu subira tout ou partie des traitements suivants2) A process for preparing the adsorbent according to claim 1. characterized in that it consists in - pre-shredding the plants to facilitate loading - loading these pre-shredded plants in the flash hydrolysis reactor - pre-impregnating these pre-shredded plants with a ionic solution - inject steam at high pressure (at least 35 bars and 2300 C) - after 90 seconds or more suddenly relax - the material obtained will undergo all or part of the following treatments - lavage à l'eau froide - washing with cold water - lavage avec un mélange dioxanne - eau (non - washing with a dioxane-water mixture (not obligatoire) obligatory) - déshydratation pour atteindre une siccité supérieure - dehydration to achieve higher dryness ou égale à 92 S (cette phase est obligatoire) or equal to 92 S (this phase is mandatory) 3) Application de la poudre de végétaux micronisés 3) Application of micronized vegetable powder selon la revendication 1 aux traitements de dépollution according to claim 1 to the depollution treatments des effluents, traitements de séparation des matières effluents, materials separation treatments organiques dissoutes dans leaur notamment lors des organic dissolved in leaur especially during processus de fabrication des papiers. cartons. panneaux papermaking process. cartons. panels de particules de bois ou pâtes à papier.  wood particles or pulp.
FR8704432A 1987-03-24 1987-03-24 Use of micronised and dried plants as adsorbents for organic matter in solution or emulsion in water Pending FR2612801A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8704432A FR2612801A1 (en) 1987-03-24 1987-03-24 Use of micronised and dried plants as adsorbents for organic matter in solution or emulsion in water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8704432A FR2612801A1 (en) 1987-03-24 1987-03-24 Use of micronised and dried plants as adsorbents for organic matter in solution or emulsion in water

Publications (1)

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FR2612801A1 true FR2612801A1 (en) 1988-09-30

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2673549A1 (en) * 1991-03-07 1992-09-11 Emc Services VEGETABLE SUPPORT FOR THE ADSORPTION OF CONTAMINANTS IN AQUEOUS MEDIA.
WO1995002452A1 (en) * 1993-07-15 1995-01-26 Boris Afanasjevitch Velitchko Process for preparing sorbents from polysaccharide-containing raw materials, sorbents and their use
FR2894243A1 (en) * 2005-12-07 2007-06-08 Otv Sa PROCESS FOR REMOVING ORGANIC MATTER FROM WATER AND DEVICE FOR IMPLEMENTING SAID METHOD

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1642424A1 (en) * 1967-05-09 1971-05-06 Still Fa Carl Use of substances from mono- and polysaccharides and their decoctions and sulfuric acid to separate organic contaminants from industrial waste water
FR2197823A1 (en) * 1972-09-04 1974-03-29 Hitachi Ltd Effluent water treatment by contacting with plant tissue - to absorb impur-ities such as heavy metal cpds and dyestuffs
JPS49122154A (en) * 1973-03-30 1974-11-21
JPS5051483A (en) * 1973-09-07 1975-05-08
GB2038196A (en) * 1978-12-19 1980-07-23 Gec Diesels Ltd Filter aid
JPS55104649A (en) * 1979-02-07 1980-08-11 Agency Of Ind Science & Technol Preparation of adsorbing material from bagasse
FR2460710A1 (en) * 1979-04-02 1981-01-30 Basset Francois Absorbent prodn. contg. vegetable prod., pref. of coral family - used to absorb liquid and semi-liquid wastes

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1642424A1 (en) * 1967-05-09 1971-05-06 Still Fa Carl Use of substances from mono- and polysaccharides and their decoctions and sulfuric acid to separate organic contaminants from industrial waste water
FR2197823A1 (en) * 1972-09-04 1974-03-29 Hitachi Ltd Effluent water treatment by contacting with plant tissue - to absorb impur-ities such as heavy metal cpds and dyestuffs
JPS49122154A (en) * 1973-03-30 1974-11-21
JPS5051483A (en) * 1973-09-07 1975-05-08
GB2038196A (en) * 1978-12-19 1980-07-23 Gec Diesels Ltd Filter aid
JPS55104649A (en) * 1979-02-07 1980-08-11 Agency Of Ind Science & Technol Preparation of adsorbing material from bagasse
FR2460710A1 (en) * 1979-04-02 1981-01-30 Basset Francois Absorbent prodn. contg. vegetable prod., pref. of coral family - used to absorb liquid and semi-liquid wastes

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
CHEMICAL ABSTRACTS, vol. 83, no. 2, 14 juillet 1975, no. 15302n, Columbus, Ohio, US; & JP-A-74 122 154 (HITACHI. LTD.) 21-11-1974 *
CHEMICAL ABSTRACTS, vol. 84, 1976, page 314, no. 21797q, Columbus, Ohio, US; & JP-A-75 51 483 (HITACHI, LTD.) 08-05-1975 *
CHEMICAL ABSTRACTS, vol. 94, no. 8, février 1981, page 134, no. 49574v, Columbus, Ohio, US; & JP-A-80 104 649 (AGENCY OF INDUSTRIAL SCIENCES AND TECHNOLOGY) 11-08-1980 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2673549A1 (en) * 1991-03-07 1992-09-11 Emc Services VEGETABLE SUPPORT FOR THE ADSORPTION OF CONTAMINANTS IN AQUEOUS MEDIA.
WO1992015397A1 (en) * 1991-03-07 1992-09-17 Emc Services Vegetable support for the adsorption of contaminants in an aqueous medium
WO1995002452A1 (en) * 1993-07-15 1995-01-26 Boris Afanasjevitch Velitchko Process for preparing sorbents from polysaccharide-containing raw materials, sorbents and their use
FR2894243A1 (en) * 2005-12-07 2007-06-08 Otv Sa PROCESS FOR REMOVING ORGANIC MATTER FROM WATER AND DEVICE FOR IMPLEMENTING SAID METHOD
WO2007066010A3 (en) * 2005-12-07 2007-07-26 Otv Sa Method for removing organic matter from water and a device for carrying out said method
US8110110B2 (en) 2005-12-07 2012-02-07 Veolia Water Solutions & Technologies Support Method for removing organic matter from water and a device for carrying out said method

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