CN104056594A - Clay mineral absorbing material applied to water treatment and preparation method thereof - Google Patents
Clay mineral absorbing material applied to water treatment and preparation method thereof Download PDFInfo
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- CN104056594A CN104056594A CN201410331976.7A CN201410331976A CN104056594A CN 104056594 A CN104056594 A CN 104056594A CN 201410331976 A CN201410331976 A CN 201410331976A CN 104056594 A CN104056594 A CN 104056594A
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Abstract
The invention discloses a novel absorbing material and a preparation method of the novel absorbing material and relates to an absorbing material obtained by modifying clay mineral through a pillar. One purpose of the invention is to provide an absorbing material applied to water treatment; the absorbing material comprises pillar clay obtained by modifying a clay mineral suspension liquid containing a smectite structure through a pillaring agent pillar; the pillaring agent is aluminum 30 reinforced polycation; the clay mineral comprises one or two out of montmorillonite and bentonite; the pillaring agent is preferably selected from the aluminum 30 reinforced polycation containing double keggin structure. The other purpose of the invention is to provide a preparation method for preparing the absorbing material by modifying the clay mineral through an aluminum 30 reinforced polycation pillar.
Description
Technical field
The present invention relates to a kind of sorbing material and preparation method thereof, especially relate to a kind of sorbing material obtaining after clay pit pillared modification that utilizes.
Background technology
The processing of water and waste water and recycling thereof have become the problem becoming more and more important of facing mankind.In current water-treatment technology field, absorption is a kind of conventional technique.The main sorbing material using is active carbon at present, but Costco Wholesale is higher.There are abundant bentonite mineral reserve in China, utilizes it to develop good absorption property material for water treatment, has important economic implications.
Bentonite is the clay pit taking montmorillonite as its key component.Bentonitic various performance major embodiment the design feature of montmorillonite.Montmorillonite is phyllosilicate, the essential structure unit of such silicate is Si-O tetrahedron and Al-(O, or Mg-(0 OH), OH) octahedron, montmorillonite is by two drift angles Si-O tetrahedron therebetween a slice Al-(O inwardly, 0H) 2: 1 type structures of octahedra composition, tetrahedral octahedron connects by shared therebetween oxygen atom, between each structure cell, connects by oxygen layer.Montmorillonite has higher ion-exchange exchange capacity (80-120mmol/100g) and good absorption property; Under normal temperature, normal pressure, ion, water and salt and nearly all organic matter can be come in and gone out between montmorillonite layer, form complicated montmorillonite inorganic complex and montmorillonite organic complex, have expanded the application of montmorillonite at field of Environment Protection.But due to the extremely strong hydrophily of bentonite surface silicon oxide structure and the hydrolysis of interlayer cation, therefore the poor-performing of harmful substance in the bentonite adsorption treatment water of non-modified.For this reason, being generally used for the bentonite of water treatment need to be through modification once or twice.
Conventional method of modifying is pillared.Conventional modifier is mainly as salts such as Ti, Al, Fe, and this metalloid salt can form inorganic polymer cationic polymer through hydrolysis, is generally aluminium 13.The pillared modification sorbing material obtaining thus, its specific area and adsorption capacity improve, but because its bulk is less, electric charge is less, improvement degree can not meet application demand completely, and does not have coagulation, is unfavorable for bringing into play the adsorption cleaning effect of sorbing material.
For this reason, need to further improve and improve the absorption property of clay pit sorbing material, to improve water and water treatment effect.
Summary of the invention
One of object of the present invention is to provide a kind of sorbing material for water treatment, comprises the column clay obtaining after by pillaring agent pillared modification by containing the clay pit suspension that covers soap class formation, and described pillaring agent is the huge polycation of aluminium 30.Described clay pit comprises one or more in montmorillonite, bentonite.The concentration 2-30wrt% of described clay pit suspension, the alum clay of pillaring agent and clay pit is than between 0.5-30mmol/g.Described alum clay than the ratio that refers to the soil (measuring with g) in aluminium in pillaring agent (with mmol Al metering) and clay pit between 0.5mmol/g to 30mmol/g.Described pillaring agent preferably contains the huge polycation of aluminium 30 of two keggin structures.
Another object of the present invention is to provide a kind of preparation method who prepares sorbing material with the huge polycation pillared modification of aluminium 30 clay pit, specifically comprise the steps:
(1) in closed reactor, aluminium polychloride is carried out to cooked at constant, described constant temperature is 80～100 DEG C, and maturing process continues 10～48 hours.(2) then add the clay pit suspension that concentration is 2-30wrt%, continue to stir 1～8 hour, carry out pillared modification, control alum clay than between 0.5-30mmol/g.Modified-reaction temperature is controlled between 20-80 DEG C.
(3) solid finally centrifugation being obtained is dried, and preferably at 40-80 DEG C of temperature, dries, and obtains sorbing material of the present invention.
According to sorbing material of the present invention, have absorption and coagulation concurrently simultaneously, can bring into play unique absorption and coagulation performance.Its surface area and adsorption capacity are greatly strengthened, and can bring into play the original flocculating property of pillaring agent.Sorbing material gas producing formation spacing has increased 10-20%, and specific area has increased 50-200%, and adsorption capacity has increased 50-300%.
According to preparation method of the present invention, two keggin structures of newfound huge polycation aluminium 30 and the unique huge space structure forming thus and high electric charge are utilized first, huge polycation aluminium 30 is carried out to clay alteration as pillaring agent, the spacing of sorbing material medium clay soil ore bed is further widened, electric double layer further compresses, specific area effectively increases, thereby adsorption effect effectively strengthens, can bring into play again the flocculating property of aluminium 30, thereby improve the absorption and coagulation effect of novel absorption material simultaneously.
Brief description of the drawings
Fig. 1 is preparation method's of the present invention flow chart.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
Embodiment 1
In closed reactor, aluminium polychloride is carried out to cooked at constant, temperature control is 90 DEG C, and slaking is after 36 hours, adding in proportion concentration is the POLARGEL NF ore deposit suspension of 10wrt%, making the alum clay ratio in reactor is 6mmol/g, stirs 8 hours under room temperature, and material is fully mixed.Finally carry out centrifugation, at 60 DEG C of temperature, dry and obtain described sorbing material.
Before modification, the bentonitic interlamellar spacing of gained increases by 12%, and specific area increases by 55%.
Embodiment 2
In closed reactor, aluminium polychloride is carried out to cooked at constant, temperature control is 95 DEG C, and slaking is after 15 hours, adding in proportion concentration is the montmorillonitic clay ore deposit suspension of 10wrt%, alum clay in reactor, than for 30mmol/g, is stirred 2 hours at 60 DEG C of temperature, material is fully mixed.Finally naturally cool to room temperature, carry out centrifugation, after drying, obtain described sorbing material at 60 DEG C of temperature.
Before modification, the modified montmorillonite used interlamellar spacing of gained increases by 10%, and specific area increases by 100%.
Embodiment 3
In closed reactor, aluminium polychloride is carried out to cooked at constant, temperature control is 80 DEG C, and slaking is after 48 hours, adding in proportion concentration is the POLARGEL NF ore deposit suspension of 30wrt%, alum clay in reactor, than for 20mmol/g, is stirred 1 hour at 40 DEG C of temperature, material is fully mixed.Finally naturally cool to room temperature, carry out centrifugation, after drying, obtain described sorbing material at 60 DEG C of temperature.
, before modification, bentonitic interlamellar spacing increases by 30%, and specific area increases by 80%.
Claims (8)
1. for a clay pit sorbing material for water treatment, it is characterized in that: comprise the column clay obtaining after by pillaring agent pillared modification by containing the clay pit suspension that covers soap class formation, described pillaring agent comprises the huge polycation of aluminium 30.
2. clay pit sorbing material as claimed in claim 1, is characterized in that: the concentration of described clay pit suspension is 2-30wrt%, and pillaring agent is 0.5-30mmol/g with the alum clay ratio of clay pit.
3. clay pit sorbing material as claimed in claim 1 or 2, is characterized in that: described pillaring agent is the huge polycation of aluminium 30 that contains two keggin structures.
4. clay pit sorbing material as claimed in claim 1, is characterized in that: described clay pit comprises one or both in montmorillonite, bentonite.
5. for a preparation method for the clay pit sorbing material of water treatment, it is characterized in that comprising the following steps:
(1) in closed reactor, aluminium polychloride is carried out to cooked at constant, described constant temperature is 80～100 DEG C, and maturing process continues 10～48 hours, obtains the huge polycation of aluminium 30;
(2) then in described closed reactor, add the clay pit suspension that concentration is 2-30wrt%, continue to stir 1～8 hour, carry out pillared modification, control alum clay than between 0.5-30mmol/g;
(3) finally the solid obtaining by centrifugation is dried, obtain described sorbing material.
6. preparation method as claimed in claim 5, is characterized in that: in (2) step, the reaction temperature in described pillared modification stage is controlled between 20-80 DEG C.
7. preparation method as claimed in claim 5, is characterized in that: in (1) step, described in the huge polycation of aluminium 30 that obtains be the huge polycation of aluminium 30 that contains two keggin structures.
8. preparation method as claimed in claim 5, is characterized in that: in (3) step, be to dry at 40-80 DEG C of temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410331976.7A CN104056594A (en) | 2013-12-25 | 2014-07-14 | Clay mineral absorbing material applied to water treatment and preparation method thereof |
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| CN201310722334.5 | 2013-12-25 | ||
| CN201310722334 | 2013-12-25 | ||
| CN201410331976.7A CN104056594A (en) | 2013-12-25 | 2014-07-14 | Clay mineral absorbing material applied to water treatment and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104909440A (en) * | 2015-04-29 | 2015-09-16 | 南通大学 | New composite ethyl orthosilicate-polyaluminium chloride flocculant preparation method |
| CN106423043A (en) * | 2016-11-01 | 2017-02-22 | 西安建筑科技大学 | Powdered activated carbon (PAC) modified bentonite, preparation method and application of PAC modified bentonite as well as green-liquor desilication method |
| CN110947362A (en) * | 2019-11-27 | 2020-04-03 | 南通大学 | Ternary modified biochar for removing fluorine in water and preparation method thereof |
| CN113603197A (en) * | 2021-07-22 | 2021-11-05 | 南京智感环境科技有限公司 | Preparation method and application of flocculating agent for water body treatment |
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| JPH06114209A (en) * | 1992-10-07 | 1994-04-26 | Tokiwa Kensetsu Kk | Water treatment agent and water method |
| CN101003374A (en) * | 2006-11-27 | 2007-07-25 | 浙江大学 | Method for synthesizing composite material of organic - inorganic bentonite |
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2014
- 2014-07-14 CN CN201410331976.7A patent/CN104056594A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06114209A (en) * | 1992-10-07 | 1994-04-26 | Tokiwa Kensetsu Kk | Water treatment agent and water method |
| CN101003374A (en) * | 2006-11-27 | 2007-07-25 | 浙江大学 | Method for synthesizing composite material of organic - inorganic bentonite |
Non-Patent Citations (2)
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| 叶长青等: ""复合聚硅铝三十絮凝剂的混凝性能研究"", 《环境科学与技术》, vol. 35, no. 3, 31 March 2012 (2012-03-31) * |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104909440A (en) * | 2015-04-29 | 2015-09-16 | 南通大学 | New composite ethyl orthosilicate-polyaluminium chloride flocculant preparation method |
| CN106423043A (en) * | 2016-11-01 | 2017-02-22 | 西安建筑科技大学 | Powdered activated carbon (PAC) modified bentonite, preparation method and application of PAC modified bentonite as well as green-liquor desilication method |
| CN110947362A (en) * | 2019-11-27 | 2020-04-03 | 南通大学 | Ternary modified biochar for removing fluorine in water and preparation method thereof |
| CN110947362B (en) * | 2019-11-27 | 2022-05-17 | 南通大学 | Ternary modified biochar for removing fluorine in water and preparation method thereof |
| CN113603197A (en) * | 2021-07-22 | 2021-11-05 | 南京智感环境科技有限公司 | Preparation method and application of flocculating agent for water body treatment |
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