CN104492390A - Corn starch-based absorbent material and preparation method thereof - Google Patents
Corn starch-based absorbent material and preparation method thereof Download PDFInfo
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- CN104492390A CN104492390A CN201410792463.6A CN201410792463A CN104492390A CN 104492390 A CN104492390 A CN 104492390A CN 201410792463 A CN201410792463 A CN 201410792463A CN 104492390 A CN104492390 A CN 104492390A
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- cornstarch
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- certain amount
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- 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
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- 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
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/0203—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of metals not provided for in B01J20/04
- B01J20/0207—Compounds of Sc, Y or Lanthanides
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- 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
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/04—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
- B01J20/045—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium containing sulfur, e.g. sulfates, thiosulfates, gypsum
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- 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
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/12—Naturally occurring clays or bleaching earth
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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
Abstract
The invention discloses a corn starch-based absorbent material and a preparation method thereof. The method comprises the following steps: mixing corn starch with distilled water, heating the mixed solution in a water bath to gelatinize, continuously stirring the gelatinized object to be transparent by a stirrer and then cooling to a room temperature, then adding an appropriate amount of potassium peroxodisulfate, dissolving, adjusting the temperature of the system to 40-50 DEG C, then adding a certain amount of ceric ammonium nitrate solution, acrylic acid and montmorillonoid, stirring to adequately reactor for 1-2h, then adjusting the pH value of the solution to 7 by NaOH solution, then sequentially washing by acetone and water, and finally drying in a vacuum to obtain the product. The method disclosed by the invention has the advantages of being simple in reaction flow, abundant in raw materials, environment-friendly, and the like, as well as has a wide application prospect.
Description
Technical field
The present invention relates to a kind of sorbent material, particularly a kind of starch-based absorbent and method of modifying, belong to chemical field.
Background technology
Along with developing rapidly of industry, Chemical Engineering Technology application is more and more extensive, while bringing convenience to our life, also result in many pollutions, particularly water pollution, and one of pollution sources of water pollutions are exactly heavy metal, heavy metal pollution refers to the environmental pollution caused by heavy metal or its compound, caused by the factors such as mining, toxic emission, sewage irrigation and use heavy metal goods, heavy metal has not easily mobile characteristic of dissolving, can not be discharged after entering organism, can slow poisoning be caused.
Heavy metal contaminants generally has potential hazard.They are different from organic pollution, and the microorganism in water is difficult to make it to decompose eliminate, and in the water of " shrimp eats planktonic organism, and small fish eats shrimp, and big fish swallowing little fish ", food chain is by enrichment, and concentration strengthens step by step.And people is in the terminal of food chain, by food or drinking-water, Toxic is taken in human body, if these Toxics are not easily drained, will put aside in human body, cause slow poisoning.Some heavy metal in vivo can be the organic compound that toxicity is larger by microbial conversion again, such as well-known water marquis is sick to cause containing methyl-mercuric chloride by institute's ichthyophagy, " itai-itai " is then caused by cadmium (Cd) pollution, and these world-shaking public hazard incidents are all containing these caused by heavy metal in the sewage of plant emissions.Therefore, Heavy Metal Pollution is the focus of Research of Environmental Sciences always.
The method being commonly used to process heavy metal-containing waste water at present has moderate water-cut stage, sulphide precipitation, oxidation/reduction method, chelating resin method, electrolytic reduction etc., wherein moderate water-cut stage, sulphide precipitation, the method ubiquity amount of reagent such as oxidation/reduction method are large, processing cost is high, easily cause secondary pollution problems, the material that absorption method mainly utilizes high-specific surface area or has a loose structure removes Adsorption of Heavy Metal Ions as sorbing material, the core of this method is the selection of adsorbent, conventional adsorbent has active carbon, mineral matter, molecular sieve and microorganism, and starch based sorbing material has renewable, biodegradable, the advantage such as with low cost, it is a kind of adsorbent with development prospect.
Starch is that carbon dioxide and water are synthesized by photosynthesis in plant tissue, belongs to natural macromolecule carbohydrate, the poly glucose sugar be made up of α-D-six ring glucose.It is extensively present in plant cell tissue, that nature exists next in number only to cellulose and has the carbohydrate of recyclability, it is a kind of important green chemical industry raw material, cornstarch exists in the middle of corn fruit, cornstarch is by chemistry, the method of physics is carried out process and can be obtained the character more excellent than native starch, native corn starch can prepare a kind of spherex derivative by copolymerzation with cross-linking reaction, its outward appearance rule, epigranular, there is space net structure, therefore a kind of sorbing material processing heavy metal wastewater thereby of preparation can be used it for.
Summary of the invention
The object of this invention is to provide a kind of preparation method of cornstarch adsorbing material, comprise the steps:
(1) get a certain amount of cornstarch, add appropriate distilled water, be placed in heating water bath, continue stirring until transparent;
(2) be then cooled to room temperature, add appropriate potassium peroxydisulfate, dissolve;
(3) system temperature is adjusted to 40-50 DEG C, adds the ceric ammonium nitrate solution initator of a certain amount of 0.2mol/L;
(4) add a certain amount of acrylic acid and imvite, and stirring makes fully to react 1-2h;
(5) add a certain amount of NaOH solution, regulate solution PH=7;
(6) use acetone, washing successively again;
(7) last vacuum drying, is product.
Preferentially, step (1) in water bath heating temperature be no more than 85 DEG C.
Preferentially, step (3) in add the amount of ceric ammonium nitrate solution and the ratio of cornstarch be 10mL:1g.
Preferentially, (4) the middle acrylic acid of interpolation and the mass ratio of imvite are 1:1 to step.
The present invention has following advantages and characteristic:
(1) reaction process is simple and direct, consuming time short;
(2) abundant raw material, cheap;
(3) do not cause secondary pollution, environmental friendliness.
Detailed description of the invention
Embodiment one:
Get 4g cornstarch and put into beaker, add 80ml distilled water, and fill a machine mixer, be placed in water-bath to heat, heating-up temperature is adjusted to 70 DEG C, Keep agitation, room temperature is cooled to after solution is transparent, 1g potassium peroxydisulfate powder is added again in container, system temperature is adjusted to 40 DEG C, add the ceric ammonium nitrate solution 40mL of 0.2mol/L, add the acrylic acid of 8g and the imvite of 8g again, after stirring makes it fully react 1h, slowly instill 0.1mol/L NaOH solution again, when solution PH=7, stop instillation, then pour in acetone, precipitation washes with water, last vacuum drying, be product.
Embodiment two:
Get 10g cornstarch and put into beaker, add 150ml distilled water, and fill a machine mixer, be placed in water-bath to heat, heating-up temperature is adjusted to 80 DEG C, Keep agitation, room temperature is cooled to after solution is transparent, 2.5g potassium peroxydisulfate powder is added again in container, system temperature is adjusted to 45 DEG C, add the ceric ammonium nitrate solution 100mL of 0.2mol/L, add the acrylic acid of 20g and the imvite of 20g again, after stirring makes it fully react 1.5h, slowly instill 0.1mol/L NaOH solution again, when solution PH=7, stop instillation, then pour in acetone, precipitation washes with water, last vacuum drying, be product.
Embodiment three:
Get 20g cornstarch and put into beaker, add 400ml distilled water, and fill a machine mixer, be placed in water-bath to heat, heating-up temperature is adjusted to 85 DEG C, Keep agitation, room temperature is cooled to after solution is transparent, 5g potassium peroxydisulfate powder is added again in container, system temperature is adjusted to 50 DEG C, add the ceric ammonium nitrate solution 200mL of 0.2mol/L, add the acrylic acid of 40g and the imvite of 40g again, after stirring makes it fully react 2h, slowly instill 0.1mol/L NaOH solution again, when solution PH=7, stop instillation, then pour in acetone, precipitation washes with water, last vacuum drying, be product.
Claims (4)
1. a preparation method for cornstarch adsorbing material, is characterized in that, the method comprises the steps:
(1) get a certain amount of cornstarch, add appropriate distilled water, be placed in heating water bath, continue stirring until transparent;
(2) be then cooled to room temperature, add appropriate potassium peroxydisulfate, dissolve;
(3) system temperature is adjusted to 40-50 DEG C, adds the ceric ammonium nitrate solution initator of a certain amount of 0.2mol/L;
(4) add a certain amount of acrylic acid and imvite, and stirring makes fully to react 1-2h;
(5) add a certain amount of NaOH solution, regulate solution PH=7;
(6) use acetone, washing successively again;
(7) last vacuum drying, is product.
2. the preparation method of a kind of cornstarch adsorbing material according to claim 1, is characterized in that, step (1) middle water bath heating temperature is no more than 85 DEG C.
3. the preparation method of a kind of cornstarch adsorbing material according to claim 1, is characterized in that, step (3) in add the amount of ceric ammonium nitrate solution and the ratio of cornstarch be 10mL:1g.
4. the preparation method of a kind of cornstarch adsorbing material according to claim 1, is characterized in that, the step (4) middle acrylic acid of interpolation and the mass ratio of imvite is 1:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410792463.6A CN104492390A (en) | 2014-12-19 | 2014-12-19 | Corn starch-based absorbent material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410792463.6A CN104492390A (en) | 2014-12-19 | 2014-12-19 | Corn starch-based absorbent material and preparation method thereof |
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| Publication Number | Publication Date |
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| CN104492390A true CN104492390A (en) | 2015-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410792463.6A Pending CN104492390A (en) | 2014-12-19 | 2014-12-19 | Corn starch-based absorbent material and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111712135A (en) * | 2017-12-18 | 2020-09-25 | 帝斯曼知识产权资产管理有限公司 | Storage-stable mixtures |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004018005A1 (en) * | 2002-08-23 | 2004-03-04 | Basf Aktiengesellschaft | Superabsorbent polymers and method of manufacturing the same |
| CN102603977A (en) * | 2012-02-28 | 2012-07-25 | 杭州杭化播磨造纸化学品有限公司 | Preparation method of water-solubility amylum-acrylamide copolymer and application of water-solubility amylum-acrylamide copolymer |
| CN102633945A (en) * | 2012-05-03 | 2012-08-15 | 山东大学 | Manufacturing method of compound type super absorbent resin |
| CN103864992A (en) * | 2014-02-27 | 2014-06-18 | 常州大学 | Method for preparing high water absorbent resin by using reeds |
-
2014
- 2014-12-19 CN CN201410792463.6A patent/CN104492390A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004018005A1 (en) * | 2002-08-23 | 2004-03-04 | Basf Aktiengesellschaft | Superabsorbent polymers and method of manufacturing the same |
| CN102603977A (en) * | 2012-02-28 | 2012-07-25 | 杭州杭化播磨造纸化学品有限公司 | Preparation method of water-solubility amylum-acrylamide copolymer and application of water-solubility amylum-acrylamide copolymer |
| CN102633945A (en) * | 2012-05-03 | 2012-08-15 | 山东大学 | Manufacturing method of compound type super absorbent resin |
| CN103864992A (en) * | 2014-02-27 | 2014-06-18 | 常州大学 | Method for preparing high water absorbent resin by using reeds |
Non-Patent Citations (1)
| Title |
|---|
| 聂红云 等: "淀粉基复合材料的制备及其对铅离子吸附性能的研究", 《安徽农业科学》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111712135A (en) * | 2017-12-18 | 2020-09-25 | 帝斯曼知识产权资产管理有限公司 | Storage-stable mixtures |
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Application publication date: 20150408 |