CN104492389A - Natural macromolecule-modified adsorbent - Google Patents
Natural macromolecule-modified adsorbent Download PDFInfo
- Publication number
- CN104492389A CN104492389A CN201410781844.4A CN201410781844A CN104492389A CN 104492389 A CN104492389 A CN 104492389A CN 201410781844 A CN201410781844 A CN 201410781844A CN 104492389 A CN104492389 A CN 104492389A
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- water
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- natural macromolecule
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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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- 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
- C02F1/285—Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (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
The invention provides a natural macromolecule-modified adsorbent and a preparation method thereof. The method comprises the following steps: firstly dissolving potato starch in distilled water; heating in a water bath to gelatinize; adding an initiator ammonium ceric nitrate liquid, acrylic acid and montmorillonite into the gelatinized mixture; after reaction, adjusting the pH value of the liquid to be neutral by using a KOH liquid; and finally, washing by acetone and water and drying in vacuum to obtain a product.
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 etc.
Be that new and effective adsorbent prepared by raw material is also more and more paid attention to its unrivaled advantage with natural polymer.Starch based macromolecule has the advantages such as renewable, biodegradable, with low cost, 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, the present invention take farina as raw material, carries out process prepare a kind of macromolecule modified adsorbent by the method for chemistry, physics.
Summary of the invention
The object of this invention is to provide a kind of natural macromolecule modification adsorbent and preparation method thereof, its method comprises the steps:
(1) get a certain amount of farina and be placed in beaker, add appropriate distilled water;
(2) beaker is placed in water-bath to heat, continues stirring until transparent;
(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) slowly drip KOH solution, regulate solution PH to be neutral;
(6) use acetone, washing successively again;
(7) last vacuum drying, is product.
Preferentially, step (2) 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 farina be 10mL:1g.
The present invention has following advantages and characteristic:
(1) abundant raw material, cheap;
(2) do not cause secondary pollution, environmental friendliness.
Detailed description of the invention
Embodiment one:
Get 4g farina and put into beaker, add 80ml distilled water, be placed in water-bath and heat, heating-up temperature is adjusted to 70 DEG C, Keep agitation, and solution is transparent is adjusted to 40 DEG C by system temperature, add the ceric ammonium nitrate solution 40mL of 0.2mol/L, then add the acrylic acid of 8g and the imvite of 8g, stir after making it fully react 1h, slowly instill 0.1mol/L NaOH solution again, regulate solution PH to be neutral, then pour in acetone, precipitation washes with water, last vacuum drying, is product.
Embodiment two:
Get 10g farina and put into beaker, add 150ml distilled water, be placed in water-bath and heat, heating-up temperature is adjusted to 80 DEG C, Keep agitation, and solution is transparent is adjusted to 45 DEG C by system temperature, add the ceric ammonium nitrate solution 100mL of 0.2mol/L, then add the acrylic acid of 20g and the imvite of 20g, stir after making it fully react 1.5h, slowly instill 0.1mol/L NaOH solution again, regulate solution PH to be neutral, then pour in acetone, precipitation washes with water, last vacuum drying, is product.
Embodiment three:
Get 20g farina and put into beaker, add 400ml distilled water, be placed in water-bath and heat, heating-up temperature is adjusted to 85 DEG C, Keep agitation, and solution is transparent is adjusted to 50 DEG C by system temperature, add the ceric ammonium nitrate solution 200mL of 0.2mol/L, then add the acrylic acid of 40g and the imvite of 40g, stir after making it fully react 2h, slowly instill 0.1mol/L NaOH solution again, regulate solution PH to be neutral, then pour in acetone, precipitation washes with water, last vacuum drying, is product.
Claims (3)
1. natural macromolecule modification adsorbent and preparation method thereof, is characterized in that, the method comprises the steps:
(1) get a certain amount of farina and be placed in beaker, add appropriate distilled water;
(2) beaker is placed in water-bath to heat, continues stirring until transparent;
(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) slowly drip KOH solution, regulate solution PH to be neutral;
(6) use acetone, washing successively again;
(7) last vacuum drying, is product.
2. a kind of natural macromolecule modification adsorbent according to claim 1 and preparation method thereof, is characterized in that, step (2) middle water bath heating temperature is no more than 85 DEG C.
3. a kind of natural macromolecule modification adsorbent according to claim 1 and preparation method thereof, is characterized in that, step (3) in add the amount of ceric ammonium nitrate solution and the ratio of farina be 10mL:1g.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410781844.4A CN104492389A (en) | 2014-12-18 | 2014-12-18 | Natural macromolecule-modified adsorbent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410781844.4A CN104492389A (en) | 2014-12-18 | 2014-12-18 | Natural macromolecule-modified adsorbent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104492389A true CN104492389A (en) | 2015-04-08 |
Family
ID=52933891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410781844.4A Pending CN104492389A (en) | 2014-12-18 | 2014-12-18 | Natural macromolecule-modified adsorbent |
Country Status (1)
| Country | Link |
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| CN (1) | CN104492389A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005108520A1 (en) * | 2004-05-05 | 2005-11-17 | Henkel Kommanditgesellschaft Auf Aktien | Two-component adhesive/sealant |
| CN1760261A (en) * | 2005-10-12 | 2006-04-19 | 西南石油学院 | Nano composite water absorbing material, and preparation method |
| CN104072667A (en) * | 2014-06-16 | 2014-10-01 | 山东科技大学 | Synthesis method of forest fire extinguishing agent based on multi-component super absorbent nanometer material |
-
2014
- 2014-12-18 CN CN201410781844.4A patent/CN104492389A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005108520A1 (en) * | 2004-05-05 | 2005-11-17 | Henkel Kommanditgesellschaft Auf Aktien | Two-component adhesive/sealant |
| CN1760261A (en) * | 2005-10-12 | 2006-04-19 | 西南石油学院 | Nano composite water absorbing material, and preparation method |
| CN104072667A (en) * | 2014-06-16 | 2014-10-01 | 山东科技大学 | Synthesis method of forest fire extinguishing agent based on multi-component super absorbent nanometer material |
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》 * |
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Application publication date: 20150408 |