CN104028223A - Cotton stalk adsorption material and preparation method thereof - Google Patents
Cotton stalk adsorption material and preparation method thereof Download PDFInfo
- Publication number
- CN104028223A CN104028223A CN201410237777.XA CN201410237777A CN104028223A CN 104028223 A CN104028223 A CN 104028223A CN 201410237777 A CN201410237777 A CN 201410237777A CN 104028223 A CN104028223 A CN 104028223A
- Authority
- CN
- China
- Prior art keywords
- cotton stalk
- preparation
- dry
- powder
- sorbing material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention discloses a cotton stalk adsorption material and a preparation method thereof. The cotton stalk adsorption material is prepared by washing mature corn stalks, mashing, baking or drying in air, grinding to obtain powder and screening so as to obtain cotton stalk powder, soaking the powder in deionized water, adding activated amylase to decompose redundant starch in the cotton stalk powder, adding a NaOH solution, reacting, neutralizing by using a diluted HCl solution, filtering, drying in the air, uniformly mixing the powder dried in the air and urea according to a mass ratio of 1:1, re-soaking in the deionized water, reacting for a certain time, washing and drying so as to obtain the cotton stalk adsorption material. The cotton stalk adsorption material is simple and rapid in preparation process, short in preparation time, wide in raw material resource, low in price, environmentaly-friendly and good in adsorption capability for heavy metal ions in wastewater.
Description
Technical field
The invention belongs to exploitation and the application of environment-friendly novel product, relate to a kind of cotton stalk sorbing material and preparation method who processes heavy metal wastewater thereby, be with a wide range of applications at field of environment protection.
Background technology
Along with the industrial activities such as plating, printing and dyeing, process hides are more and more extensive, bring many whiles easily to our life, also will produce a large amount of heavy metal pollution, heavy metal pollution is different from the pollution of other organic compounds.Many organic compounds can, by the physics of nature own, chemistry or biological purification, reduce harmfulness or remove.And heavy metal is difficult to degrade in environment.After these heavy metal wastewater thereby entered environments or the ecosystem, can shift by food chain, accumulate, amplify, the mankind and biology are caused to great harm.
The method that is commonly used at present to process heavy metal-containing waste water has reduction precipitation method, barium salt process, electrolytic reduction etc., these methods exist that amount of reagent is large, processing cost is high, easily cause secondary pollution problems, by contrast, that adsorption treatment method has is with low cost, be difficult for causing the advantages such as secondary pollution, is a kind of heavy metals processing method with development prospect.
China is as a large agricultural country, and agricultural crop straw output is very large, but aspect agricultural crop straw comprehensive utilization, its major part is burned or discarded, and has not only wasted resource but also contaminated environment.In cotton stalk, contain abundant cellulose, hydroxyl on glucose basic ring in cellulose chain can carry out esterification, enzyme and copolyreaction, therefore cotton stalk can be introduced to the group with acidity, alkalescence or Chelating Properties by reactions such as esterification, etherificate or chelatings, modification is prepared into a kind of heavy metal adsorption material cheaply, cotton stalk sorbing material will improve the utilization ratio of cotton stalk greatly, and has the following advantages: the one, and reaction process is simple and direct, consuming time short; The 2nd, abundant raw material, cheap; The 3rd, environmentally friendly.
Summary of the invention
The object of this invention is to provide a kind of cotton stalk sorbing material and preparation method thereof.Sorbing material prepared by the method is with low cost, adsorbance large and be difficult for causing secondary pollution.
For realizing this purpose, the present invention is achieved through the following technical solutions:
Adopt natural cotton stalk as cellulosic source, prepare a kind of low cost sorbing material by enzyme, esterification modification.
A preparation method for cotton stalk sorbing material, comprises the steps:
(1) select ripe cotton stalk, clean, smash to pieces, dry or dry;
(2) will dry or the cotton stalk grinds that dries, and cross 70 mesh sieves, collect powder;
(3) the powder of collection is immersed in deionized water, adds the amylase of the 0.01-0.05mol/L having activated, under 35-50 DEG C of condition, react 1-2 hour;
(4) add the NaOH solution of 0.05-0.1mol/L, reaction 30-60 minute, then neutralize with rare HCl solution;
(5) gained liquid filtering in inciting somebody to action (4), then dry;
(6) dry the powder obtaining and mix by the mass ratio of 1:1 with urea filtering in (5), be again immersed in deionized water, under 50 DEG C of conditions, react 5-10 hour; Clean and remove residual ionic liquid for 3-4 time by deionized water or with 95% alcohol afterwards, after cleaning, under the condition of 50 DEG C, dry and obtain a kind of cotton stalk sorbing material.
The present invention has following advantages and characteristic;
(1) compared with prior art, adopt the mode of enzyme degraded, the starch in cotton stalk is carried out to enzymolysis, process is simply efficient, does not destroy hydroxyl and the phenolic group functional group of cotton stalk, ensures the content of effective adsorption component;
(2) with respect to traditional adsorbent, this to have method simple, with low cost, advantages of environment protection;
(3) this adsorbent adsorption effect excellence, is a kind of sorbing material of good Adsorption of Heavy Metals, is with a wide range of applications.
Detailed description of the invention
Embodiment mono-:
Select ripe cotton stalk, clean, smash to pieces, dry or dry; By the cotton stalk grinds of drying or drying, and cross 70 mesh sieves, collect powder; Taking gained powder 50g is immersed in deionized water, add the 0.01mol/L amylase solution 2mL having activated, under 35-50 DEG C of condition, react 1 hour, then add the 0.05mol/L NaOH solution of 10mL, react 50 minutes, again with the neutralization of HCl solution, in gained liquid filtering, then dry; After being mixed by the mass ratio of 1:1 with urea, the powder drying is again immersed in deionized water, under 50 DEG C of conditions, react 6 hours, remove residual ionic liquid for 2-3 time by washed with de-ionized water afterwards, clean 1-2 time with 95% alcohol, cotton stalk sorbing material is dried and obtained to the Constant Temp. Oven of putting into 50 DEG C after cleaning again.
Embodiment bis-:
Select ripe cotton stalk, clean, smash to pieces, dry or dry; By the cotton stalk grinds of drying or drying, and cross 70 mesh sieves, collect powder; Take gained powder 50g and be immersed in deionized water, add the 0.05mol/L amylase solution 2mL having activated, under 35-50 DEG C of condition, react 2 hours, then add the 0.1mol/L NaOH solution of 10mL, react 50 minutes, then neutralize with HCl solution.In and gained liquid filtering, then dry; After being mixed by the mass ratio of 1:1 with urea, the powder drying is again immersed in deionized water, under 50 DEG C of conditions, react 8 hours, remove residual ionic liquid for 2-3 time by washed with de-ionized water afterwards, clean 1-2 time with 95% alcohol, cotton stalk sorbing material is dried and obtained to the Constant Temp. Oven of putting into 50 DEG C after cleaning again.
Embodiment tri-:
Select ripe cotton stalk, clean, smash to pieces, dry or dry, by the cotton stalk grinds of drying or drying, and cross 70 mesh sieves, collect powder; Take gained powder 100kg and squeeze into 3 tons of health storage tanks, and inject appropriate amount of deionized water in tank, add the 0.05mol/L amylase solution 2L having activated, under 50 DEG C of conditions, react 2 hours, then add the 0.1mol/L NaOH solution of 5L, react 1 hour, then neutralize with HCl solution, in inciting somebody to action, filter with sheet frame compressor with gained liquid, then dry; After being mixed by the mass ratio of 1:1 with urea, again squeezes in 3 tons of sanitary cans in the powder drying, and inject deionized water, remain under 50 DEG C of conditions and react 8 hours, remove residual ionic liquid for 3-4 time by washed with de-ionized water afterwards, after cleaning, at the temperature of 50 DEG C, dry oven dry obtains cotton stalk sorbing material.
Claims (5)
1. a preparation method for cotton stalk sorbing material, is characterized in that, this preparation method carries out according to the following steps:
(1) select ripe cotton stalk, clean, smash to pieces, dry or dry;
(2) will dry or the cotton stalk grinds that dries, and cross 70 mesh sieves, collect powder;
(3) the powder of collection is immersed in deionized water, adds the amylase having activated, under 35-50 DEG C of condition, react 1-2 hour;
(4) add the NaOH solution of 0.05-0.1mol/L, reaction 30-60 minute, then neutralize with rare HCl solution;
(5) gained liquid filtering in inciting somebody to action (4), then dry;
(6) dry the powder obtaining and mix by the mass ratio of 1:1 with urea filtering in (5), be again immersed in deionized water, under 50 DEG C of conditions, react 5-10 hour; Clean and remove residual ionic liquid for 3-4 time by deionized water or with 95% alcohol afterwards, after cleaning, under the condition of 50 DEG C, dry and obtain a kind of cotton stalk sorbing material.
2. the preparation method of a kind of cotton stalk sorbing material according to claim 1, is characterized in that, step (3) in diastatic solubility used be 0.01-0.05mol/L.
3. the preparation method of a kind of cotton stalk sorbing material according to claim 1, is characterized in that, at the mass fraction of step rare HCl solution used in (4) lower than 15%.
4. the preparation method of a kind of cotton stalk sorbing material according to claim 1, is characterized in that, step (4) in residing temperature be controlled within the scope of 40-50 DEG C.
5. the preparation method of a kind of cotton stalk sorbing material according to claim 1, is characterized in that, step (5) in, drying is to adopt the nature mode of drying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410237777.XA CN104028223A (en) | 2014-06-01 | 2014-06-01 | Cotton stalk adsorption material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410237777.XA CN104028223A (en) | 2014-06-01 | 2014-06-01 | Cotton stalk adsorption material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104028223A true CN104028223A (en) | 2014-09-10 |
Family
ID=51459356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410237777.XA Pending CN104028223A (en) | 2014-06-01 | 2014-06-01 | Cotton stalk adsorption material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104028223A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105776363A (en) * | 2016-02-29 | 2016-07-20 | 济南大学 | Cotton stalk-guar gum compounded light fiber coagulant aid |
-
2014
- 2014-06-01 CN CN201410237777.XA patent/CN104028223A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105776363A (en) * | 2016-02-29 | 2016-07-20 | 济南大学 | Cotton stalk-guar gum compounded light fiber coagulant aid |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104028224A (en) | Wheat straw adsorption material and preparation method thereof | |
| CN100579649C (en) | Method and use for preparing natural adsorption agent by zymolysis | |
| CN103861570A (en) | Novel bagasse absorbing material as well as preparation method thereof | |
| CN101497031B (en) | Polluted water body heavy metal adsorption material and preparation method thereof | |
| CN103111265B (en) | Preparation method of adsorbent for removing antibiotics in water, prepared adsorbent and application thereof | |
| CN103706629B (en) | Method for removing cadmium in contaminated soil through watermelon peel leaching | |
| CN104226264A (en) | Bitter gourd vine adsorption material and preparation method thereof | |
| CN104028230A (en) | Novel sorghum straw adsorbing material and preparation method thereof | |
| CN104028226A (en) | Rice straw adsorption material and preparation method thereof | |
| CN104028223A (en) | Cotton stalk adsorption material and preparation method thereof | |
| CN104028235A (en) | Barley straw adsorbing material and preparation method thereof | |
| CN104229794A (en) | Method for preparing activated carbon with corn stalks | |
| CN104028231A (en) | Novel rape straw adsorbing material and preparation method thereof | |
| CN103521182A (en) | Preparation method of pomelo peel activated carbon | |
| CN104028225A (en) | Highland barley straw adsorption material and preparation method thereof | |
| CN105536716A (en) | Orange peel modified adsorbent material and preparation method thereof | |
| CN103464112A (en) | Method for preparing biological adsorbent by using wheat husks as raw materials | |
| CN104028227A (en) | Corn stalk adsorption material and preparation method thereof | |
| CN106622155A (en) | Process for preparing vine modified adsorbent through enzymatic degradation | |
| CN104209096A (en) | Watermelon vine adsorption material and preparation method thereof | |
| CN104028228A (en) | Novel peanut straw adsorbing material and preparation method thereof | |
| CN106552591A (en) | It is a kind of that the method that technique prepares calabash rattan modified adsorbent is dropped by enzyme | |
| CN106622154A (en) | Honeysuckle vine modified adsorbent and preparation process thereof | |
| CN104028233A (en) | Rye straw adsorbing material and preparation method thereof | |
| CN104028234A (en) | Sesame straw adsorbing material and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140910 |