CN110124618A - A kind of hydrotalcite-plant cellulose composite pellets and the preparation method and application thereof - Google Patents
A kind of hydrotalcite-plant cellulose composite pellets and the preparation method and application thereof Download PDFInfo
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- CN110124618A CN110124618A CN201910298898.8A CN201910298898A CN110124618A CN 110124618 A CN110124618 A CN 110124618A CN 201910298898 A CN201910298898 A CN 201910298898A CN 110124618 A CN110124618 A CN 110124618A
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- 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
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- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
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Abstract
The invention discloses a kind of hydrotalcite-plant cellulose composite pellets and the preparation method and application thereof.The preparation method is that: plant cellulose powder and hydrotalcite are added in the mixed aqueous solution of polyvinyl alcohol and sodium alginate, after mixing, the mixed aqueous solution is added in the mixed aqueous solution of boric acid and calcium chloride, calcification, hydrotalcite-plant cellulose composite pellets are made.The plant cellulose and hydrotalcite that the present invention selects are from a wealth of sources, safe and non-toxic；Preparation process is simple, does not adulterate other pollutants, and spherical size is controllable, is easy to experimental implementation, convenient for recycling；Hydrotalcite obtained-plant cellulose composite pellets can effective adsorption treatment nanoscale plastics.
Description
Technical field
The invention belongs to dirty water decontamination handles technical fields in environmental protection, and in particular to a kind of hydrotalcite-plant fiber
Plain composite pellets and the preparation method and application thereof.
Background technique
Hydrotalcite (hydrotalcite) is led because of its unique layer structure in catalysis, medicine, ion exchange and absorption etc.
Domain is with a wide range of applications.Hydrotalcite is usually in powdered, although when handling water pollutant, effect is obvious, not
Conducive to recycling.For cellulose by extracting from hybrid giant napier, hybrid giant napier is big biomass plant, growth strong with stooling
Speed is fast, yield is high, full of nutrition, the features such as can harvesting for many years, and hybrid giant napier leaf can be used as forage feed ox, sheep, rabbit, fish
Equal plant-eating animals, and it is also extensively used for the fields such as papermaking, food；Simultaneously as the hybrid giant napier system of fibrous root is flourishing, drought resistance
By force, soil is required low, is also gradually applied to the afforesting again of deserted mountain in recent years, water and soil conservation balance, soil texture are repaired
The ecological environment treatments such as multiple and its improvement and protection aspect, but a large amount of stalks including hybrid giant napier are still suffered from and are lost
The situation abandoned, burned pollutes and environment and is unfavorable for the utilization of resources, therefore, if hybrid giant napier (or straw of other plant can be utilized
Stalk, such as: corn stover, rice straw etc.) cellulose is extracted, it can be realized simultaneously ecology, environment, social and economic benefits,
Value is played in various aspects.Cellulose is most commonly used a kind of natural macromolecule amylose in distributed in nature, is that the mankind possess
Valuable natural reproducible resource, surface contains a large amount of hydroxyl group, and large specific surface area has and is easy to the characteristics of adsorbing.
Cellulose adsorbent be it is powdered, be difficult to carry out subsequent recovery operation in practical applications.In addition, for current
The removal of micron order following plastics can be (anti-by Membrane Bioreactor for Wastewater Treatment primary effluent and different tertiary treatment technologies
Filter, quick sand filtration and dissolution air bearing) processing secondary effluent, engineering is larger and complex process.
Summary of the invention
To solve the shortcomings and deficiencies of the prior art, the primary purpose of the present invention is that providing a kind of hydrotalcite-plant
The preparation method of fibres element composite pellets.
The another object of the application is to provide a kind of hydrotalcite-plant cellulose composite pellets made from the above method.
The another object of the application is that provide a kind of above-mentioned hydrotalcite-plant cellulose composite pellets receives in processing water
The application of meter level plastics.
The object of the invention is achieved through the following technical solutions:
A kind of preparation method of hydrotalcite-plant cellulose composite pellets, comprising the following steps:
(1) polyvinyl alcohol and sodium alginate are added to the water, heat simultaneously stirring and dissolving, obtains mixed solution, the mixing
The mass concentration of polyvinyl alcohol is 5-15% in solution, and the mass concentration of sodium alginate is 0.1-0.5%；
(2) plant cellulose powder and hydrotalcite are added in the mixed solution of step (1), are uniformly mixed, wherein planting
The mass ratio of fibres element powder, hydrotalcite and polyvinyl alcohol is 1:(1-2): (5-14)；
(3) step (2) mixed solution after mixing is added drop-wise to boric acid and calcium chloride according to volume ratio 3:(3-5)
In mixed aqueous solution, after calcification 3-6h, washing obtains hydrotalcite-plant cellulose composite pellets.
The mass concentration of step (1) described polyvinyl alcohol is preferably 5-6%；The mass concentration of the sodium alginate is preferably
0.15-0.25%.
The specific preparation method of step (1) described mixed solution is preferred are as follows: is first added to the water polyvinyl alcohol, 90 DEG C of stirrings
1.5h obtains poly-vinyl alcohol solution, is then cooled to≤80 DEG C, and sodium alginate soln is added, and stirs 1.5h.
The specific preparation method of the mixed solution is more preferably: first polyvinyl alcohol is added to the water, 90 DEG C of stirring 1.5h,
Poly-vinyl alcohol solution is obtained, is then cooled to 80 DEG C, sodium alginate soln is added, stirs 1.5h.
The mass concentration of the poly-vinyl alcohol solution is preferably 10-12%；The mass concentration of the sodium alginate soln is excellent
It is selected as 0.2-0.5%, more preferably 0.3-0.5%.
The volume ratio of the poly-vinyl alcohol solution and sodium alginate soln is preferably 1:1.
Step (2) the plant cellulose powder is preferably hybrid giant napier cellulose powder.
Cleaning the preparation method is as follows: hybrid giant napier is shredded for the hybrid giant napier cellulose powder, dry, pulverize after boiling water boiling
And be sieved, it then be dried to constant weight, obtains powder；Powder is added in nital by the matter liquor ratio of 1g:25ml, 90 DEG C of heating
Bleach to powder, be washed out drying, obtains hybrid giant napier cellulose powder.
The volume ratio of nitric acid and ethyl alcohol is preferably 1:(3-5 in the nital), more preferably 1:4；The nitre
The concentration of acid is 65-68%.
The time of the boiling water boiling is preferably 2-4h；The sieving is to sieve with 100 mesh sieve.
The washing is preferred are as follows: rinsed 2 times with nital, reusable heat water washing until cleaning solution is in neutrality,
Then filtrate is drained.
The drying temperature is preferably 60 DEG C, and drying time is preferably 24-36h.
Step (2) hydrotalcite is preferably to be added in the mixed solution in a manner of hydrotalcite solution.
The mass concentration of the hydrotalcite solution is preferably 0.5-2%；More preferably 1-2%.
Step (2) hydrotalcite is passing through calcination processing using preceding, and the calcination temperature is preferably 500 DEG C, when calcining
Between preferably 4h.
Step (2) described hydrotalcite is preferably magnalium type hydrotalcite.
The solvent of step (2) the hydrotalcite solution is preferably water.
In step (2) mixed solution that plant cellulose powder and hydrotalcite are added to step (1), specific method
Are as follows: first plant cellulose powder is dispersed in the mixed solution of step (1), hydrotalcite is then added.
The evenly dispersed method preferably uses ultrasonic grinder to be dispersed.
The mass ratio of step (2) the plant cellulose powder, hydrotalcite and polyvinyl alcohol is preferably 1:(1-2): (10-
12)。
Step (3) the dropwise addition condition is preferably 30-40 drop/min, 0.02-1ml/ drop；More preferably 0.02-0.5ml/
Drop.When be added dropwise condition not in the range when, small spherical particles size obtained is uneven, bead absorption when due to granular size
Uneven difference is too big, and intergranular pores porosity increases, adsorption effect decline.
Step (3) the dropwise addition method is preferably sessile drop method.
For the sessile drop method it is preferable to use syringe progress, rate of addition is 30-40 drop/min, 0.02-1ml/ drop；It is more excellent
Choosing is carried out using 20ml syringe, is (1.2-1.6) × 31mm with gauge.
The mass concentration of boric acid and calcium chloride is respectively preferably in the mixed aqueous solution of step (3) boric acid and calcium chloride
2-8% and 3-10%；It is more preferably 3-5%.
Step (3) the calcification time is preferably 4-5h.
Step (3) described washing methods is preferred are as follows: is washed with water 3-5 times.
A kind of hydrotalcite-plant cellulose composite pellets made from the above method.
The hydrotalcite-plant cellulose composite pellets volume is preferably 0.02-0.05ml/.
A kind of application of above-mentioned hydrotalcite-plant cellulose composite pellets nanoscale plastics in processing water.
The application method are as follows: it is water-soluble that nanoscale plastics to be processed are added in water intaking talcum-plant cellulose composite pellets
In liquid, constant temperature oscillation processing.
Compared with prior art, the present invention has the following advantages and beneficial effects:
(1) present invention selects polyvinyl alcohol and sodium alginate, obtains the hydrotalcite-plant cellulose with high-specific surface area
Composite pellets are for adsorbing.
(2) plant cellulose selected of the present invention and hydrotalcite are from a wealth of sources, safe and non-toxic, the main structure of hydrotalcite by
Two or more metal oxide is combined into, and is positively charged layer structure, with cellulose crosslinked at compound small
After ball, the removal rate to nano plastic not only can be improved, but also be conducive to subsequent recovery processing.
(3) hydrotalcite of the present invention-plant cellulose composite pellets adsorbent preparation process is simple, does not adulterate other pollutions
Object, and spherical size is controllable, is easy to experimental implementation, convenient for recycling.
(4) hydrotalcite produced by the present invention-plant cellulose composite pellets can nanoscale plastics effectively in adsorption treatment water,
Removal rate is up to 68%.
Detailed description of the invention
Fig. 1 is hydrotalcite-plant cellulose composite pellets scanning electron microscope exterior view made from embodiment 1, amplification factor
It is 5000.
Fig. 2 is hydrotalcite-plant cellulose composite pellets scanning electron microscope sectional drawing made from embodiment 2, amplification factor
It is 5000.
Fig. 3 is hydrotalcite-plant cellulose composite pellets pictorial diagram made from embodiment 2.
Fig. 4 is plant cellulose adsorbent material pictorial diagram (can not be made into bead) made from comparative example 1.
Fig. 5 is hydrotalcite-plant cellulose compound pictorial diagram (can not be combined into bead) made from comparative example 2.
Specific embodiment
Below with reference to embodiment and attached drawing, the present invention is described in further detail, but embodiments of the present invention are unlimited
In this.
Nitric acid described in the embodiment of the present application and comparative example is the nitric acid solution that concentration is 65-68%；The 20ml's
Syringe is 1.2 × 31mm with gauge.
Hydrotalcite made from the embodiment of the present invention-plant cellulose composite pellets volume is 0.02-0.05ml/.
Hydrotalcite-plant cellulose composite pellets obtained adsorb nanoscale plastic solution in the embodiment of the present application
Method particularly includes:
It weighs hydrotalcite-plant cellulose composite pellets adsorbent made from 3 parts (200 every part) and is added separately to 50ml
In adsorbate solution, constant temperature oscillation is adsorbed in constant temperature oscillator.Nanoscale plastics in solution are tested at regular intervals
Concentration.
Adsorbance (Qe) and adsorption rate are calculated using following formula:
Qe=(Co-Ce) × V, adsorption rate=(Co-Ce)/Ce × 100%.
Co and Ce is respectively the initial concentration (mgL of adsorbate solution in water phase in formula-1) and balance when concentration (mg
L-1)；V is liquid phase volume (L).
The preparation of 1 hydrotalcite of embodiment-plant cellulose composite pellets
The pretreatment of hybrid giant napier and its cellulose extract: hybrid giant napier is cut into segment tap water wash clean surface dirt,
It finally uses twice of ultrapure water, is put into the pot equipped with ultrapure water after boiling water boiling 4h, be put into baking oven drying, carried out with pulverizer
It crushes, smashed sample is sieved with 100 mesh sieve, be placed in drier and dry to constant weight, obtain powder.With nitric acid-Ethanol Method
Cellulose is extracted, above-mentioned powder is added to the nital (volume of nitric acid ethyl alcohol of 250ml by matter liquor ratio 1g:25ml
Than in 1:4), to load onto condensation reflux unit, 90 DEG C of heating water bath 2h rush resulting cellulose powder with nital
It washes 2 times, reusable heat water washing is until cleaning solution is in neutrality.Filtrate is drained, puts to 60 DEG C of oven dryings for 24 hours, cellulose is made
Powder.
The preparation of hydrotalcite powder: being added Muffle furnace for magnalium type hydrotalcite (Shaoyang Tiantang Auxiliaries Chemical Co., Ltd.),
4 hours are burnt at 500 DEG C to get water-soluble hydrotalcite powder.
Hydrotalcite-plant cellulose composite pellets preparation method: it is multiple that hydrotalcite-plant cellulose is made using investment
Close bead.12g polyvinyl alcohol is added in 88ml water, 90 DEG C of stirring in water bath 1.5h are completely dissolved polyvinyl alcohol；Temperature tune
To 80 DEG C, the sodium alginate soln that 100ml mass fraction is 0.5% is added in polyvinyl alcohol water solution, after stirring 1.5h
Be completely dissolved sodium alginate, be added 1g cellulose powder, be put into ultrasonic grinder cellulose is broken up completely mix it is molten
In liquid.The hydrotalcite solution 100ml of 2% mass fraction is added in mixed solution, continues to stir 2h to mixed liquor in thick,
Sessile drop method is used using the syringe of 20ml, (40 drops/min) are added dropwise according to volume ratio for 3:4 in mixed liquor and are arrived by boric acid and chlorine
Change calcium made of cross-linking agent aqueous solution (wherein boric acid mass concentration be 3%, calcium chloride mass concentration be 4%) in, after calcification 4h
Hydrotalcite-plant cellulose composite pellets are formed, with milli-Q water 3 times, and are stored in ultrapure water, it is for later use.
The scanning electron microscope table of hydrotalcite made from the present embodiment-plant cellulose composite pellets (average diameter is about 4mm)
Face figure is as shown in Figure 1.
The preparation of 2 hydrotalcites of embodiment-plant cellulose composite pellets
The pretreatment of hybrid giant napier and its cellulose extract: hybrid giant napier is cut into segment tap water wash clean surface dirt,
It finally uses twice of ultrapure water, is put into the pot equipped with ultrapure water after boiling water boiling 4h, be put into baking oven drying, carried out with pulverizer
It crushes, smashed sample is sieved with 100 mesh sieve, be placed in drier and dry to constant weight, obtain powder.With nitric acid-Ethanol Method
Cellulose is extracted, above-mentioned powder is added to the nital (volume ratio of nitric acid ethyl alcohol of 250ml by matter liquor ratio 1g:25ml
In 1:4), to load onto condensation reflux unit, 90 DEG C of heating water bath 2h rinse resulting cellulose powder with nital
2 times, reusable heat water washing is until cleaning solution is in neutrality.Filtrate is drained, puts to 60 DEG C of oven dryings for 24 hours, cellulose powder is made
End.
The preparation of hydrotalcite powder: being added Muffle furnace for magnalium type hydrotalcite (Shaoyang Tiantang Auxiliaries Chemical Co., Ltd.),
4 hours are burnt at 500 DEG C to get water-soluble hydrotalcite powder.
Hydrotalcite-plant cellulose composite pellets preparation method: it is multiple that hydrotalcite-plant cellulose is made using investment
Close bead.10g polyvinyl alcohol is added in 90ml water, 90 DEG C of stirring in water bath 1.5h are completely dissolved polyvinyl alcohol；Temperature tune
To 80 DEG C, the sodium alginate soln that 100ml mass fraction is 0.3% is added in poly-vinyl alcohol solution, makes sea after stirring 1.5h
Mosanom is completely dissolved, and 1g cellulose powder is added, is put into ultrasonic grinder and breaks up cellulose in mixed solution completely.
The hydrotalcite solution 100ml of 1% mass fraction is added in mixed solution, continues to stir 2h to mixed liquor in thick, use
The syringe of 20ml uses sessile drop method, and (40 drops/min) are added dropwise according to volume ratio for 3:4 in mixed liquor and are arrived by boric acid and calcium chloride
Manufactured cross-linking agent aqueous solution (wherein boric acid mass concentration is 3%, calcium chloride mass concentration be 4%) in, calcification 4h forms water
Talcum-plant cellulose composite pellets, pure water 3 times, and be stored in ultrapure water, it is for later use.
The present embodiment obtains the scanning electron microscope section of hydrotalcite-plant cellulose composite pellets (average diameter is about 4mm)
Figure and pictorial diagram difference are as shown in Figures 2 and 3.
Adsorption applications of 3 hydrotalcites of the embodiment-plant cellulose composite pellets to nano plastic
Absorption: hydrotalcite-plant cellulose composite pellets suction obtained in 3 parts of (200 every part) above-described embodiments 1 is weighed
Attached dose is added separately in 50ml nano plastic aqueous solution, and 25 degree of constant temperature oscillations carry out adsorption operations for 24 hours in constant temperature oscillator,
Test the concentration of nano plastic (main component is polystyrene, and partial size is about in 100~200nm) solution.Configured nanometer modeling
The initial concentration for expecting solution is 25mg/L, is averagely down to 8mg/L afterwards for 24 hours, and average adsorption rate is 68%.
Adsorption applications of 4 hydrotalcites of the embodiment-plant cellulose composite pellets to nano plastic
Absorption: hydrotalcite-plant cellulose composite pellets suction obtained in 3 parts of (200 every part) above-described embodiments 2 is weighed
Attached dose is added separately in 50ml nano plastic aqueous solution, and 25 degree of constant temperature oscillations carry out adsorption operations for 24 hours in constant temperature oscillator,
Test the concentration of nano plastic (main component is polystyrene, and partial size is about in 100~200nm) solution.Configured nanometer modeling
The initial concentration for expecting solution is 25mg/L, is averagely down to 14mg/L afterwards for 24 hours, and average adsorption rate is 44%.
Comparative example 1 is added without hydrotalcite
The pretreatment of hybrid giant napier and its cellulose extract: hybrid giant napier is cut into segment tap water wash clean surface dirt,
It finally uses twice of ultrapure water, is put into the pot equipped with ultrapure water after boiling water boiling 4h, be put into baking oven drying, carried out with pulverizer
It crushes, smashed sample is sieved with 100 mesh sieve, be placed in drier and dry to constant weight, obtain powder.With nitric acid-Ethanol Method
Cellulose is extracted, above-mentioned powder is added to the nital (volume of nitric acid ethyl alcohol of 250ml by matter liquor ratio 1g:25ml
Than in 1:4), to load onto condensation reflux unit, 90 DEG C of heating water bath 2h rush resulting cellulose powder with nital
It washes 2 times, reusable heat water washing is until cleaning solution is in neutrality.Filtrate is drained, puts to 60 DEG C of oven dryings for 24 hours, cellulose is made
Powder.
The preparation method of plant cellulose bead: plant cellulose bead is made using investment.12g polyvinyl alcohol is added
Enter into 88ml water, 90 DEG C of stirring in water bath 1.5h are completely dissolved polyvinyl alcohol；Temperature is adjusted to 80 DEG C, by 100ml mass fraction
It is added in poly-vinyl alcohol solution for 0.5% sodium alginate soln, is completely dissolved sodium alginate after stirring 1.5h, 1g is added
Cellulose powder is put into ultrasonic grinder and breaks up cellulose in mixed solution completely.Continue to stir 2h to mixed liquor be in
It is thick, sessile drop method is used using the syringe of 20ml, (40 drops/min) are added dropwise according to volume ratio for 3:4 in mixed liquor and are arrived by boron
Acid and calcium chloride made of cross-linking agent aqueous solution (wherein boric acid mass concentration be 3%, calcium chloride mass concentration be 4%) in, calcium
Change 4h.Mixed liquor can not glomeration, as a result as shown in Figure 4.
Comparative example 2
The pretreatment of hybrid giant napier and its cellulose extract: hybrid giant napier is cut into segment tap water wash clean surface dirt,
It finally uses twice of ultrapure water, is put into the pot equipped with ultrapure water after boiling water boiling 4h, be put into baking oven drying, carried out with pulverizer
It crushes, smashed sample is sieved with 100 mesh sieve, be placed in drier and dry to constant weight, obtain powder.With nitric acid-Ethanol Method
Cellulose is extracted, above-mentioned powder is added to the nital (volume of nitric acid ethyl alcohol of 250ml by matter liquor ratio 1g:25ml
Than in 1:4), to load onto condensation reflux unit, 90 DEG C of heating water bath 2h rush resulting cellulose powder with nital
It washes 2 times, reusable heat water washing is until cleaning solution is in neutrality.Filtrate is drained, puts to 60 DEG C of oven dryings for 24 hours, cellulose is made
Powder.
The preparation of hydrotalcite powder: being added Muffle furnace for magnalium type hydrotalcite (Shaoyang Tiantang Auxiliaries Chemical Co., Ltd.),
4 hours are burnt at 500 DEG C to get water-soluble hydrotalcite powder.
The preparation method of plant cellulose bead: hydrotalcite-plant cellulose compound is made using investment.3g is gathered
Vinyl alcohol is added in 97ml water, and 90 DEG C of stirring in water bath 1.5h are completely dissolved polyvinyl alcohol；Temperature is adjusted to 80 DEG C, by 100ml
The sodium alginate soln that mass fraction is 0.05% is added in poly-vinyl alcohol solution, keeps sodium alginate completely molten after stirring 1.5h
Solution is added 0.2g cellulose powder, is put into ultrasonic grinder and breaks up cellulose in mixed solution completely.In mixed solution
The middle hydrotalcite solution 100ml that 0.3% mass fraction is added continues to stir 2h to mixed liquor to use the note of 20ml in thick
Emitter uses sessile drop method, and (40 drops/min) are added dropwise according to volume ratio for 3:4 in mixed liquor and arrive the friendship made of boric acid and calcium chloride
Joining agent, (wherein boric acid mass concentration is 3%, and calcium chloride mass concentration is calcification 4h 4%) in 200ml mixed solution.Mixed liquor
Can not glomeration, as a result as shown in Figure 5.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present invention,
It should be equivalent substitute mode, be included within the scope of the present invention.
Claims (10)
1. a kind of hydrotalcite-plant cellulose composite pellets preparation method, which comprises the following steps:
(1) polyvinyl alcohol and sodium alginate are added to the water, heat simultaneously stirring and dissolving, obtains mixed solution, the mixed solution
The mass concentration of middle polyvinyl alcohol is 5-15%, and the mass concentration of sodium alginate is 0.1-0.5%；
(2) plant cellulose powder and hydrotalcite are added in the mixed solution of step (1), are uniformly mixed, wherein plant is fine
The mass ratio for tieing up plain powder, hydrotalcite and polyvinyl alcohol is 1:(1-2): (5-14)；
(3) step (2) mixed solution after mixing is added drop-wise to the mixing of boric acid and calcium chloride according to volume ratio 3:(3-5)
In aqueous solution, after calcification 3-6h, washing obtains hydrotalcite-plant cellulose composite pellets.
2. a kind of hydrotalcite-plant cellulose composite pellets preparation method according to claim 1, which is characterized in that step
Suddenly the mass ratio of (2) described plant cellulose powder, hydrotalcite and polyvinyl alcohol is 1:(1-2): (10-12).
3. a kind of preparation method of hydrotalcite-plant cellulose composite pellets according to claim 1 or claim 2, which is characterized in that
The mass concentration of step (1) described polyvinyl alcohol is 5-6%；The mass concentration of the sodium alginate is 0.15-0.25%.
4. a kind of hydrotalcite-plant cellulose composite pellets preparation method according to claim 3, which is characterized in that step
Suddenly (2) described hydrotalcite is added in the mixed solution in a manner of hydrotalcite solution；The quality of the hydrotalcite solution
Concentration is 0.5-2%；
In the mixed aqueous solution of step (3) boric acid and calcium chloride the mass concentration of boric acid and calcium chloride be respectively 2-8% and
3-10%.
5. a kind of hydrotalcite-plant cellulose composite pellets preparation method according to claim 4, which is characterized in that institute
The mass concentration for stating hydrotalcite solution is 1-2%；The matter of boric acid and calcium chloride in the mixed aqueous solution of the boric acid and calcium chloride
Measuring concentration is 3-5%.
6. a kind of hydrotalcite-plant cellulose composite pellets preparation method according to claim 3, which is characterized in that step
Suddenly (2) described hydrotalcite is magnalium type hydrotalcite；The hydrotalcite is passing through calcination processing using preceding, and the calcination temperature is
500 DEG C, calcination time 4h.
7. a kind of hydrotalcite-plant cellulose composite pellets preparation method according to claim 3, which is characterized in that step
Suddenly (3) described dropwise addition condition is 30-40 drop/min, 0.02-1ml/ drop.
8. a kind of preparation method of hydrotalcite-plant cellulose composite pellets according to claim 1 or claim 2, which is characterized in that
Step (1) described mixed solution it is specific the preparation method comprises the following steps: being first added to the water polyvinyl alcohol, 90 DEG C of stirring 1.5h are gathered
Then glycohol solution is cooled to≤80 DEG C, sodium alginate soln is added, and stirs 1.5h；
The mass concentration of the poly-vinyl alcohol solution is 10-12%；The mass concentration of the sodium alginate soln is 0.2-
0.5%；
In step (2) mixed solution that plant cellulose powder and hydrotalcite are added to step (1), method particularly includes:
First plant cellulose powder is dispersed in the mixed solution of step (1), hydrotalcite is then added；
Step (2) the plant cellulose powder is hybrid giant napier cellulose powder；
Cleaning the preparation method is as follows: hybrid giant napier is shredded for the hybrid giant napier cellulose powder, dry, pulverize and mistake after boiling water boiling
Sieve, then be dried to constant weight, obtains powder；Powder is added in nital by the matter liquor ratio of 1g:25ml, 90 DEG C are heated to powder
End bleaches, and is washed out drying, obtains hybrid giant napier cellulose powder；
Step (3) the dropwise addition method is sessile drop method.
9. a kind of hydrotalcite-plant cellulose composite pellets made from claim 1-8 the method.
10. a kind of application of hydrotalcite-plant cellulose composite pellets nanoscale plastics in processing water described in claim 9.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112058248A (en) * | 2020-09-15 | 2020-12-11 | 太原科技大学 | Preparation method of bacterial cellulose LDH composite adsorption material |
| CN114522670A (en) * | 2022-01-21 | 2022-05-24 | 内蒙古大学 | Microsphere and preparation method and application thereof |
| CN116159540A (en) * | 2022-12-13 | 2023-05-26 | 辽宁大学 | Zn-Al hydrotalcite film, preparation method thereof and application thereof in gallium recovery |
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| CN101927132B (en) * | 2009-04-16 | 2013-06-12 | 济南联星石油化工有限公司 | Chitosan/ synthetic hydrotalcite composite permeable membrane, preparation method and application thereof |
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| CN101348782A (en) * | 2008-08-30 | 2009-01-21 | 兰州大学 | Macroreticular polyvinyl alcohol bead carrier and preparation thereof |
| CN101927132B (en) * | 2009-04-16 | 2013-06-12 | 济南联星石油化工有限公司 | Chitosan/ synthetic hydrotalcite composite permeable membrane, preparation method and application thereof |
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| CN112058248A (en) * | 2020-09-15 | 2020-12-11 | 太原科技大学 | Preparation method of bacterial cellulose LDH composite adsorption material |
| CN112058248B (en) * | 2020-09-15 | 2022-07-12 | 太原科技大学 | Preparation method of bacterial cellulose LDH composite adsorption material |
| CN114522670A (en) * | 2022-01-21 | 2022-05-24 | 内蒙古大学 | Microsphere and preparation method and application thereof |
| CN114522670B (en) * | 2022-01-21 | 2023-11-17 | 内蒙古大学 | Microsphere, preparation method and application thereof |
| CN116159540A (en) * | 2022-12-13 | 2023-05-26 | 辽宁大学 | Zn-Al hydrotalcite film, preparation method thereof and application thereof in gallium recovery |
| CN116159540B (en) * | 2022-12-13 | 2024-02-20 | 辽宁大学 | Zn-Al hydrotalcite film, preparation method thereof and application thereof in gallium recovery |
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