CN106140101A - A kind of method that modified Wheat Straw prepares adsorbent - Google Patents
A kind of method that modified Wheat Straw prepares adsorbent Download PDFInfo
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- CN106140101A CN106140101A CN201510430879.8A CN201510430879A CN106140101A CN 106140101 A CN106140101 A CN 106140101A CN 201510430879 A CN201510430879 A CN 201510430879A CN 106140101 A CN106140101 A CN 106140101A
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Abstract
The method that a kind of modified Wheat Straw of the present invention prepares adsorbent; being effectively utilized agricultural by-products Wheat Straw is raw material; with epoxychloropropane and diethylenetriamine, Wheat Straw is carried out chemical modification; modified Wheat Straw absorption property is greatly improved, and becomes a kind of cheap, is easy to get, efficient Absorbent, is widely used in Industrial Wastewater Treatment; reduce the cost of business processes waste water; twice laid, protects environment, has great economic benefit and environmental benefit.
Description
Technical field
The present invention relates to adsorbent preparation field, particularly relate to a kind of adsorbent processed for waste water, a kind of method that modified Wheat Straw prepares adsorbent.
Background technology
Along with the fast development of the modern industries such as textile industry, paper-making industry, rubber industry, plastics industry, pharmacy industry, grocery trade and cosmetic, containing substantial amounts of dyestuff in the waste water of discharge, cause water pollution increasingly severe.Most of dye molecules have the aromatic ring structure of complexity, stable chemical nature, have certain toxicity, it is difficult to biodegradation.
Wheat stalk is a kind of agricultural resource cheap and easy to get, the yield annual in China is the hugest, and these Wheat Straws are in addition to small part is used as feedstuff, and major part is thrown away as fuel or garbage, utilization rate is the lowest, not only causes the significant wastage of natural resources also can cause environmental pollution.Wheat Straw itself has the structures such as cellulose, has certain absorbability, and therefore along with increasing that agricultural by-products is studied in terms of absorption, the research to Wheat Straw is also gradually increased.Wheat Straw itself has good mechanical strength and stability, and its main component is cellulose, hemicellulose and lignin, containing substantial amounts of hydroxyl, and can be easily modified with many substance reactions.In recent years, Wheat Straw is utilized to prepare adsorbent for raw material by methods such as modifications and be applied to the research direction that waste water control becomes new.
In order to reduce the cost of scale wastewater treatment, exploitation adsorbent cheap, efficient, that be easy to get becomes the target that enterprise improves, utilize Wheat Straw for raw material, the adsorbent of Cheap highly effective is prepared by modification, can not only turn waste into wealth, and entreprise cost can be reduced, have broad application prospects and preferable environmental benefit, social benefit.
Summary of the invention
It is an object of the invention to, a kind of method that modified Wheat Straw prepares adsorbent is provided, to be solved technical problem is that utilizes agricultural by-products Wheat Straw for raw material, the absorption property of Wheat Straw is made to be greatly improved through modification, it is effective to waste water process, owing to Wheat Straw is cheap and easy to get, make the cost of business processes waste water be substantially reduced, produce great economic benefit.
The object of the invention to solve the technical problems realizes by the following technical solutions.
The method that a kind of modified Wheat Straw proposed according to the present invention prepares adsorbent, wherein its preparation method comprises the following steps:
(1) clean Wheat Straw is dried, pulverizes, sieved, take the Wheat Straw of 40-60 mesh；
(2) in the Wheat Straw of 40-60 mesh, addition epoxychloropropane, ethanol, sodium hydroxide solution carry out preliminary modification, are washed till neutrality after modification is complete；
(3) in step (2) gained Wheat Straw, addition sodium carbonate, ethanol, diethylenetriamine, distilled water carry out again modified, are washed till neutrality after modification is complete；
(4) Wheat Straw modified for step (3) gained is dried.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
The method that aforesaid a kind of modified Wheat Straw prepares adsorbent, wherein the Wheat Straw (g) described in step (2) is 1.5:30:15:100 with the ratio of epoxychloropropane (mL), ethanol (mL) and sodium hydroxide solution (mL).
The method that aforesaid a kind of modified Wheat Straw prepares adsorbent, wherein the concentration of the sodium hydroxide solution described in step (2) is 2mol/L.
The method that aforesaid a kind of modified Wheat Straw prepares adsorbent, wherein the Wheat Straw (g) described in step (3) is 1.5:3.0:15:15:100 with the ratio of sodium carbonate (g), ethanol (mL), diethylenetriamine (mL) and distilled water (mL).
The method that aforesaid a kind of modified Wheat Straw prepares adsorbent, wherein said step (2) and (3) are modified with constant temperature oscillator, and duration of oscillation is respectively 3h and 5h, and temperature is 30 DEG C.
The present invention compared with prior art has clear advantage and beneficial effect.By technique scheme, the method that a kind of modified Wheat Straw of the present invention prepares adsorbent can reach suitable technological progress and practicality, and has the extensive value in industry, and it at least has the advantage that
1, the present invention is effectively utilized agricultural by-products Wheat Straw, by twice laid, the most cost-effective; and protect environment; the modified Wheat Straw made is for Industrial Wastewater Treatment, and its purpose is still to reduce the waste water harm to environment, economic benefit and environmental benefit is organically combined.
2, preparation process of the present invention is simple, and manufacturing cost reduces relatively, such that it is able to cost is greatly reduced, increases economic efficiency, and in the practicality used and cost benefit, needed for really complying fully with industry development, quite has industrial utilization.
In sum; the method that a kind of modified Wheat Straw of the present invention prepares adsorbent; utilize epoxychloropropane and diethylenetriamine that Wheat Straw is carried out chemical modification, make the absorption property of modified Wheat Straw be greatly improved, become a kind of cheap, be easy to get, efficient Absorbent; reduce the cost of business processes waste water; twice laid, protects environment, has significantly progress with in benefit technically; and there is obvious good effect, it is really a new and innovative, progressive, practical new design.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention, and can be practiced according to the content of description, and in order to the above and other objects, features and advantages of the present invention can be become apparent, below especially exemplified by preferred embodiment, describe in detail as follows.
Detailed description of the invention
For the present invention aforementioned and other technology contents, feature and effect, can clearly appear from the detailed description of preferred embodiments below.By the explanation of detailed description of the invention, when the technological means can taked the present invention by reaching predetermined purpose and effect are able to more deeply and concrete understanding, but appended embodiment is only to provide reference and purposes of discussion, is not used for being any limitation as the present invention.
The method that a kind of modified Wheat Straw of the present invention prepares adsorbent, its preparation method comprises the following steps:
(1) first Wheat Straw tap water is rinsed repeatedly, remove other impurity such as the dirt on Wheat Straw surface and floating dust, more repeatedly rinse with distilled water to totally, soak 24h；
(2) Wheat Straw taking-up is repeatedly rinsed with distilled water again, put it in baking oven, dry to constant weight at 80 DEG C；
(3) Wheat Straw is cut into segment, pulverizes with pulverizer, sieve, take the Wheat Straw of 40-60 mesh；
(4) weigh a certain amount of Wheat Straw in conical flask, add epoxychloropropane, ethanol, sodium hydroxide solution, finally conical flask is placed in constant temperature oscillator, take out after the 3h that vibrates at 30 DEG C, repeatedly rinse to neutrality with distilled water；
(5) Wheat Straw after flushing is put in conical flask, adds a certain amount of sodium carbonate, ethanol, diethylenetriamine, distilled water, again conical flask is put in constant temperature oscillator, take out after the 5h that vibrates at 30 DEG C, stand 24h, with distilled water, Wheat Straw is washed till neutrality, dries at 80 DEG C.
Preferably, the method that above-mentioned a kind of modified Wheat Straw prepares adsorbent, wherein, the Wheat Straw described in step (4) with the ratio of epoxychloropropane, ethanol and sodium hydroxide solution is: Wheat Straw (g): epoxychloropropane (mL): ethanol (mL): sodium hydroxide solution (mL)=1.5:30:15:100.
Preferably, the method that above-mentioned a kind of modified Wheat Straw prepares adsorbent, wherein, the concentration of the sodium hydroxide solution described in step (4) is 2mol/L.
Preferably, the method that above-mentioned a kind of modified Wheat Straw prepares adsorbent, wherein, the Wheat Straw described in step (5) with the ratio of sodium carbonate, ethanol, diethylenetriamine and distilled water is: Wheat Straw (g): sodium carbonate (g): ethanol (mL): diethylenetriamine (mL): distilled water=1.5:3.0:15:15:100.
Further illustrate below in conjunction with preferred embodiment.
Embodiment
Choose a certain amount of Wheat Straw tap water repeatedly to rinse, remove other impurity such as the dirt on Wheat Straw surface and floating dust, repeatedly rinse with distilled water to totally, soak 24h, take out after the most repeatedly rinsing, put it in baking oven, dry to constant weight at 80 DEG C；After Wheat Straw is cut into segment, pulverizes with pulverizer, sieve, take the Wheat Straw of 40-60 mesh；Weigh the Wheat Straw of 1.5g 40-60 mesh in the conical flask of 250mL, add the epoxychloropropane of 30mL, the ethanol of 15mL, the sodium hydroxide solution of the 2mol/L of 100mL, finally conical flask is placed in constant temperature oscillator, takes out after the 3h that vibrates at 30 DEG C, repeatedly rinse to neutrality with distilled water；Again the Wheat Straw after flushing is put in the conical flask of 250mL, adds the sodium carbonate of 3.0g, the ethanol of 15mL, the diethylenetriamine of 15mL, the distilled water of 100mL, then conical flask is put in constant temperature oscillator, take out after the 5h that vibrates at 30 DEG C, stand 24h, with distillation washing to neutrality, dry at 80 DEG C.
Weigh the unmodified Wheat Straw of equal in quality and modified Wheat Straw respectively, under the same conditions acid chromium blue k (AK), viride nitens (LG) and Cr (VI) are carried out adsorption test, result shows, unmodified Wheat Straw is respectively 10 to the unit adsorbance of three kinds of adsorbates, 16,1.14mg/g, modified Wheat Straw is respectively 358 to the unit adsorbance of three kinds of adsorbates, 493,26.7mg/g, visible, the absorbability of anion is significantly improved by modified Wheat Straw, and modified Wheat Straw becomes the adsorbent of a kind of Cheap highly effective.
A kind of modified Wheat Straw of the present invention that said method is made prepares the technological innovation of the method for adsorbent, is respectively provided with many saving graces, and really has technological progress for technical staff of the same trade now.
The above, it it is only presently preferred embodiments of the present invention, not the present invention is made any pro forma restriction, although the present invention is disclosed above with preferred embodiment, but it is not limited to the present invention, any those skilled in the art, in the range of without departing from technical solution of the present invention, when the technology contents of available the disclosure above makes a little change or is modified to the Equivalent embodiments of equivalent variations, in every case it is the content without departing from technical solution of the present invention, any simple modification above example made according to the technical spirit of the present invention, equivalent variations and modification, all still fall within the range of technical solution of the present invention.
Claims (6)
1. the method that a modified Wheat Straw prepares adsorbent, it is characterised in that its preparation method include with
Lower step:
(1) clean Wheat Straw is dried, pulverizes, sieved, take the Wheat Straw of 40-60 mesh；
(2) in the Wheat Straw of 40-60 mesh, addition epoxychloropropane, ethanol, sodium hydroxide solution enter
Row is preliminary modified, is washed till neutrality after modification is complete；
(3) in step (2) gained Wheat Straw, sodium carbonate, ethanol, diethylenetriamine, steaming are added
Distilled water carries out again modified, stands 24h, be washed till neutrality after modification is complete；
(4) Wheat Straw modified for step (3) gained is dried.
The method that a kind of modified Wheat Straw the most according to claim 1 prepares adsorbent, its feature
It is the Wheat Straw (g) described in step (2) and epoxychloropropane (mL), ethanol (mL) and sodium hydroxide
The ratio of solution (mL) is 1.5:30:15:100.
The method that a kind of modified Wheat Straw the most according to claim 1 prepares adsorbent, its feature
The concentration being the sodium hydroxide solution described in step (2) is 2mol/L.
The method that a kind of modified Wheat Straw the most according to claim 1 prepares adsorbent, its feature
It is the Wheat Straw (g) described in step (3) and sodium carbonate (g), ethanol (mL), diethylenetriamine (mL)
It is 1.5:3.0:15:15:100 with the ratio of distilled water (mL).
The method that a kind of modified Wheat Straw the most according to claim 1 prepares adsorbent, its feature
Being that step (2) and (3) constant temperature oscillator is modified, temperature is 30 DEG C.
The method that a kind of modified Wheat Straw the most according to claim 5 prepares adsorbent, its feature
It is that the duration of oscillation of step (2) and (3) is respectively 3h and 5h.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108636357A (en) * | 2018-06-07 | 2018-10-12 | 石梦成 | A kind of use in waste water treatment cross-linking type graphite oxide aerogel and preparation method thereof |
| CN112831063A (en) * | 2021-01-08 | 2021-05-25 | 杭州所予科技有限公司 | Preparation method and application of functionalized cellulose grafted polyacrylic acid composite hydrogel |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101342485A (en) * | 2008-07-03 | 2009-01-14 | 山东大学 | Method for preparing quaternary amines salt cationic adsorption agent with plant of high cellulose content |
| CN103071463A (en) * | 2013-02-28 | 2013-05-01 | 南京工业大学 | Modified peanut shell Pb (II) adsorbent and preparation method and application thereof |
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- 2015-07-21 CN CN201510430879.8A patent/CN106140101A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101342485A (en) * | 2008-07-03 | 2009-01-14 | 山东大学 | Method for preparing quaternary amines salt cationic adsorption agent with plant of high cellulose content |
| CN103071463A (en) * | 2013-02-28 | 2013-05-01 | 南京工业大学 | Modified peanut shell Pb (II) adsorbent and preparation method and application thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108636357A (en) * | 2018-06-07 | 2018-10-12 | 石梦成 | A kind of use in waste water treatment cross-linking type graphite oxide aerogel and preparation method thereof |
| CN112831063A (en) * | 2021-01-08 | 2021-05-25 | 杭州所予科技有限公司 | Preparation method and application of functionalized cellulose grafted polyacrylic acid composite hydrogel |
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Application publication date: 20161123 |