CN104084143A - Preparation method of function material in biomass water treatment environment - Google Patents
Preparation method of function material in biomass water treatment environment Download PDFInfo
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- CN104084143A CN104084143A CN201410352333.0A CN201410352333A CN104084143A CN 104084143 A CN104084143 A CN 104084143A CN 201410352333 A CN201410352333 A CN 201410352333A CN 104084143 A CN104084143 A CN 104084143A
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Abstract
The invention relates to a method for preparing anion exchange fibers as a function material in the biomass water treatment environment from a loofah, an agricultural product. The method comprises the following steps: (1) naturally air-drying or drying a mature loofah fruit, then peeling, removing loofah seeds in pores, and cutting into a cylindrical body so as to obtain a cylindrical loofah; (2) pretreating the prepared cylindrical loofah; (3) activating; (4) crosslinking; (5) aminating; (6) washing and drying so as to obtain the anion exchange fibers as the function material in the biomass water treatment environment. Compared with an existing preparation method of anion exchange fibers in the same type, the preparation method has the advantages of low time consumption, low energy consumption, less pollution, low preparation cost, good product adsorption performance and simplicity and convenience in recycling and regeneration and is especially suitable for industrial popularization.
Description
Technical field
The present invention relates to a kind of preparation method of biomass water processing environment functional material-anion-exchange fibre, particularly a kind of method of utilizing agricultural products luffa to prepare natural plants ion-exchange fibre.
Background technology
Ion-exchange fibre (ion exchange fibers, IEF) be adsorption and the parting material of a fibre-like, the exchangeable ion and some same sex ion that mainly go out by the surface active groups dissociation of fiber or fibrous polymer exchange.Compared with traditional granular ion exchange resin, ion-exchange fibre specific surface is large, mass transfer distance is short, metal ion, organic molecule, pernicious gas etc. are had to higher adsorptive selectivity, and there is the serial advantages such as adsorption and desorption speed is fast, power of regeneration is strong, energy consumption is low, fluid resistance is little.Meanwhile, its application form various (as fiber, cloth, nonwoven etc.), therefore ion-exchange fibre is widely used in the fields such as individual respiratory protection, gas purification, environmental protection, biochemical industry, hydrometallurgy.CN1262706C has reported a kind of ion-exchange fibre and fabric thereof the preparation method in closed reactor, its fabric product has ability and the power of regeneration of superpower absorption pernicious gas (sulfur dioxide, ammonia, hydrogen fluoride, hydrogen chloride), has good economic and social profit.CN101736525A has announced a kind of method of the non-weaving cloth of being prepared by ion-exchange fibre, this non-woven cotton material is applied in the absorbent device of super absorbent polymer, can greatly improve the water absorbent rate of super absorbent polymer, and then the use amount of super absorbent polymer in minimizing absorbent device, economic benefit and actual benefit obviously improve.CN101036897A discloses the method for utilizing crop waste fiber rice straw, maize straw, useless flax silk, waste cotton to prepare anionite, and its preparation technology is simple, and cost of material is cheap, is particularly suitable for for processing anion-containing waste water.
Utilize at present raw material that natural plants raw material prepare natural plants base ion-exchange fibre just like agricultural product, agricultural byproducts, agricultural wastes, other plant etc., such as stalk, rice husk, pericarp, linen-cotton etc.Their key component is cellulose, also contains hemicellulose, lignin and pectin.In actual applications, though preparation keeps the technique simplicity of the ion-exchange fibre of complete physical structure, but the utilization ratio of its exchange capacity and product is lower than graininess ion-exchanger and Powdered ion exchange material, industrial applications exists certain restricted, and service efficiency and the service life of further reducing research and development preparation cost and further improving product are the developing direction of ion-exchange fibre.
Sponge gourd (Luffa cylindria) has another name called day sieve wadding, day network and becomes melon etc., belongs to annual Curcurbitaceae and climbs up by holding on to vegetation.Sponge gourd divides general sponge gourd (Luffa cylindvica Roem) and has rib sponge gourd (Luffa acutangula Roxb), originate in India, be distributed widely in the torrid zone, subtropical zone and the Temperate Region in China in Asia, sponge gourd is one of vegetables in summer, therefore in China's Jiangsu-zhejiang Shanghai Area and Guangdong, Guangxi plantation is very general.Generally, using tender melon as dish use, do the tasty and refreshing deliciousness of soup taste.Luffa (Vegetable Sponge of Luffa) has another name called sponge gourd net, day sieve line, day sieve muscle etc., it is the three-dimensional fiber tube bank of skin thick in the fruit after sponge gourd maturation and multidirectional fibrage composition, three major polymers: cellulose, hemicellulose and lignin composition, its content of cellulose is up to more than 60%.At present, the research of luffa mainly concentrates on its medical value and prepares shower used in everyday, bath accessory.Compendium of Material Medica is recorded it can lead to people's train of thought internal organs, and goes wind removing toxic substances, and detumescence is reduced phlegm, and Eradicates pain desinsection is controlled all blood diseases.Aspect routine use article, existing multinomial invention, as luffa soap, luffa mattress, Luffa sponge cleaning brush, Loofah insole etc.
201310106082.3 reported the method for utilizing luffa to prepare anion-exchange fibre.In this process, grafting unit has adopted dimethylamine, but dimethylamine participates in chemical reaction as grafting agent, obtains the ion-exchange fibre product that contains tertiary amine group, and its adsorption effect is only 80% left and right.
As from the foregoing, prepared in the technology of anion-exchange fibre by luffa at present, have comparatively serious secondary pollution, need to improve, and further improve adsorption effect.
Summary of the invention
Technical problem to be solved by this invention is the preparation method that a kind of biomass water processing environment functional material-anion-exchange fibre is provided for the deficiency of above-mentioned prior art existence, and cost is low, absorption property good, environmental friendliness.
The present invention for the technical scheme that the problem of the above-mentioned proposition of solution adopts is:
A preparation method for biomass water processing environment functional material, it comprises the steps:
1) activation: the dried loofah that weighs 1～3g alkali treatment is placed in the mixed solution of 80～120ml DMF (DMF) and 20-80ml epoxychloropropane, stirs 0.5～2h under 70～100 DEG C of condition of water bath heating;
2) crosslinked: to add 5～10ml ethylenediamine to make crosslinking agent, continue 70～100 DEG C of heating water bath 0.5～2h;
3) amination: add 5～30ml triethylamine aqueous solution, continue 70～100 DEG C of heating water bath 2～4h, obtain amination luffa (being preliminary product);
4) clean: amination luffa is inserted in hot pure water and strong stirring 5～10min immediately, then filters, repeat this cleaning step to filtrate without residue;
5) the amination luffa after cleaning is dried, obtain biomass water processing environment functional material-anion-exchange fibre.
Press such scheme, the concrete grammar of described dried loofah alkali treatment is as follows: first, by real the vegetable silk melon and fruit after the normal growth maturation sponge gourd seed of epidermis and hole inside of removing, through natural air drying or after drying, cut into cylinder, obtain cylinder luffa [inside interweave the string vascular bundle cylinder (strong but pliable in texture) that is netted]; Then the cylinder luffa of getting ready is cut into block luffa (being luffa fritter), block luffa is soaked to 5～10h in 5%～20% sodium hydrate aqueous solution, then solution is filtered, luffa is cleaned to neutral, finally luffa is dried, obtain the dried loofah of alkali treatment.
Press such scheme, step 4) described hot pure water is 50-80 DEG C.
Press such scheme, step 4) described strong stirring refers to that speed of agitator is 200～300r/min.
Press such scheme, alkali treatment and step 5) described in dry temperature be 60～65 DEG C, the time is 12h.
The existing living beings of utilizing are prepared in the synthetic method of anion-exchange fibre for raw material, use dimethylamine as amination reagent, and its grafting amination reaction mainly occurs in 3 hydroxyl group sites (seeing Fig. 3), obtains the anion-exchange fibre containing tertiary amine group.But the adsorption capacity of tertiary amine group is not best, the adsorption capacity that various amino-containeds are rolled into a ball is as follows: quaternary amines > tertiary amine group > secondary amine group.Therefore, in biological material, introduce quaternary amines and will more be conducive to improve its adsorption effect.In the present invention, adopt triethylamine as amination reagent, its grafting amination reaction mainly occurs in 4 hydroxyl group sites (seeing Fig. 2), obtain the anion-exchange fibre containing quaternary amines, anion adsorption selectivity has had and has increased substantially, theoretical value reaches 25%, and preparation process clean environment firendly more, cleaning step is also more succinct.
Plantation quantity at China's sponge gourd is huge, therefore utilize luffa to prepare ion-exchange fibre for raw material exploitation, with existing ion-exchange fibre raw materials of the same type compared with technology, possess the feature of cost low (economy), facility and environmental protection (cleaning), means, approach and the novelty prepared for raising China ion-exchange fibre of the same type are all significant.
The invention has the beneficial effects as follows: prepare natural plants ion-exchange fibre taking the product sponge gourd ripening fruits of crops as raw material, open up the kind of natural plants ion-exchange fibre raw materials and prepared approach, with preparing compared with approach of existing ion-exchange fibre of the same type, preparation technology is consuming time short, and power consumption is few, pollutes few, preparation cost is low, and product absorption property is greatly improved, reclaim and regenerate simple and convenient, be particularly suitable for industry promote.
Brief description of the drawings
Fig. 1 is dimethylamine grafting amination reaction equation.
Fig. 2 is triethylamine grafting amination reaction equation.
Fig. 3 is process chart of the present invention.
Fig. 4 is that the embodiment of the present invention 2 obtains biomass water processing environment functional material-anion-exchange fibre regeneration tests figure.
Fig. 5, Fig. 6, Fig. 7 and Fig. 8 are respectively the pictures of raw material, comparative example product (1), comparative example product (2) and product of the present invention.
Detailed description of the invention
In order to understand better the present invention, further describe content of the present invention below in conjunction with specific embodiment, but content of the present invention is not only confined to the following examples.
Embodiment 1:
As shown in Figure 3, a kind of preparation method of biomass water processing environment functional material-anion-exchange fibre, it comprises the steps:
1) the vegetable silk melon and fruit after normal growth maturation is real, remove the sponge gourd seed of epidermis and hole inside, through natural air drying or after drying, cut into the long cylinder of 5～15cm, obtain cylinder luffa [inside interweave the string vascular bundle cylinder (strong but pliable in texture) that is netted];
2) the cylinder luffa of getting ready is carried out to pretreatment: the structure that with clean scissors, the cylindrical shape luffa of getting ready is cut into a large amount of bulks, the scope that the wide * of long * is high is 0.5cm*0.5cm*0.5cm to 1.0cm*1.0cm*1.0cm, obtains block luffa (being luffa fritter); The block luffa shearing is put into the beaker of the 10L cleaning with distilled water, poured into 20% sodium hydrate aqueous solution 6～8L, soak 5h, then filter solution, clean luffa fritter with distilled water extremely neutral; Then luffa fritter is poured in clean screen cloth, related screen cloth is put into baking oven dries 12h at 60～65 DEG C, obtains the pretreated dried loofah of alkali of fritter;
3) activation: the dried loofah that takes out above alkali treatment from baking oven, weigh the dried loofah of 1g fritter, put into the flask with three necks,round bottom of 1L, two side mouths of there-necked flask cover (note: only uncap when needs add medicine with glass cover, after adding medicine, continue to cover, all so operations in whole course of reaction), stretch into electric mixer from the main mouth of there-necked flask, add 120ml N from there-necked flask side mouth with little glass funnel, dinethylformamide (DMF) solution, 60ml epoxychloropropane solution, unlatching electric stirring continues to be uniformly mixed solution and (makes the abundant haptoreaction of luffa and reagent, rotating speed is at 120～180r/min, in whole course of reaction, stir and do not stop) bathing heating 0.5～1h at 85 DEG C of Water Unders,
4) crosslinked: add 8ml ethylenediamine to make crosslinking agent, rotating speed is 120～180r/min, bathe heating 1h at 85 DEG C of Water Unders;
5) amination: add 10ml triethylamine aqueous solution, rotating speed is 120～180r/min, continues 85 DEG C of heating water bath 2h, obtains amination luffa (being preliminary product);
6) clean: preliminary product is poured out from there-necked flask to clean screen cloth, then proceed to immediately in the large beaker of 500ml of the hot pure water of 70 DEG C of left and right of splendid attire, and strong stirring 5～10min (described strong stirring refers to that speed of agitator is 200～300r/min), then use screen filtration; Repeat this cleaning step to filtrate without obvious residue;
7) preliminary product after cleaning is gone to screen cloth, under 60～65 DEG C of conditions, dry 12h, obtain biomass water processing environment functional material-anion-exchange fibre (final products, sealing is stored in drier, for subsequent use).
In order to show better performance and the effect of this biomass water processing environment functional material-anion-exchange fibre, with it, nitrate ion in water is carried out the test of absorption property, specific experiment method is as follows:
Take many parts of 0.1g embodiment 1 products obtained therefroms, put into respectively the iodine flask of clean 250ml, pour the 50ml2mg/L KNO of (referring to nitrate) into
3the aqueous solution, builds lid, and in the lower vibration of temperature (20 ± 1 DEG C), oscillation intensity is 120r/min, vibration 60min.Nitrate ion concentration is measured by the nitrate determination method shown in " water and effluent monitoring analysis (the 4th edition) ", and related experiment result is as table 1.
The impact of table 1 product dosage on clearance
| Product dosage (g) | Nitrate anion clearance (%) |
| 0.025 | 67 |
| 0.05 | 80 |
| 0.075 | 85 |
| 0.1 | 87 |
| 0.2 | 87 |
Embodiment 2:
A kind of preparation method of biomass water processing environment functional material-anion-exchange fibre, it comprises the steps:
1) the vegetable silk melon and fruit after normal growth maturation is real, remove the sponge gourd seed of epidermis and hole inside, through natural air drying or after drying, cut into the long cylinder of 5～15cm, obtain cylinder luffa [inside interweave the string vascular bundle cylinder (strong but pliable in texture) that is netted];
2) the cylinder luffa of getting ready is carried out to pretreatment: the structure that with clean scissors, the cylindrical shape luffa of getting ready is cut into a large amount of bulks, the scope that the wide * of long * is high is 0.5cm*0.5cm*0.5cm to 1.0cm*1.0cm*1.0cm, obtains block luffa (being luffa fritter); The block luffa shearing is put into the beaker of the 10L cleaning with distilled water, poured into 20% sodium hydrate aqueous solution 6～8L, soak 5h, then filter solution, clean luffa fritter with distilled water extremely neutral; Then luffa fritter is poured in clean screen cloth, related screen cloth is put into baking oven dries 12h at 60～65 DEG C, obtains the pretreated dried loofah of alkali of fritter;
3) activation: weigh the pretreated dried loofah of 3g fritter alkali, put into the flask with three necks,round bottom of 1L, two side mouths of there-necked flask cover (note: only uncap when needs add medicine with glass cover, after adding medicine, continue to cover, all so operations in whole course of reaction), stretch into electric mixer from the main mouth of there-necked flask, add 120ml N from there-necked flask side mouth with little glass funnel, dinethylformamide (DMF) solution, 60ml epoxychloropropane solution, unlatching electric stirring continues to be uniformly mixed solution and (makes the abundant haptoreaction of luffa and reagent, rotating speed is at 120～180r/min, in whole course of reaction, stir and do not stop) bathing heating 0.5～1h at 85 DEG C of Water Unders,
4) crosslinked: add 8ml ethylenediamine to make crosslinking agent, rotating speed is 120～180r/min, bathe heating 1h at 85 DEG C of Water Unders;
5) amination: add 10ml triethylamine aqueous solution, rotating speed is 120～180r/min, continues 85 DEG C of heating water bath 2h, obtains amination luffa (being preliminary product);
6) clean: preliminary product is poured out from there-necked flask to clean screen cloth, then proceed to immediately in the large beaker of 500ml of the hot pure water of 70 DEG C of left and right of splendid attire, and strong stirring 5～10min (described strong stirring refers to that speed of agitator is 200～300r/min), then use screen filtration; Repeat this cleaning step to filtrate without obvious residue.
7) preliminary product after cleaning is gone to screen cloth, under 60～65 DEG C of conditions, dry 12h, obtain biomass water processing environment functional material-anion-exchange fibre (final products, sealing is stored in drying box, for subsequent use).
Embodiment 2 exchanges effect (eliminating rate of absorption) as table 2, and experimental technique experiment condition is with embodiment 1, to the absorption property of nitrate ion in water as shown in Figure 4.
The impact of table 2 product dosage on clearance
| Product dosage (g) | Nitrate anion clearance (%) |
| 0.025 | 73 |
| 0.05 | 91 |
| 0.075 | 96 |
| 0.1 | 98 |
| 0.2 | 98 |
Embodiment 3:
A kind of preparation method of biomass water processing environment functional material-anion-exchange fibre, it comprises the steps:
1) the vegetable silk melon and fruit after normal growth maturation is real, through natural air drying or after drying, remove the sponge gourd seed of epidermis and hole inside, cut into the long cylinder of 5～15cm, obtain cylinder luffa [the inside string vascular bundle cylinder (strong but pliable in texture) that is netted that interweaves;
2) the cylinder luffa of getting ready is carried out to pretreatment: the structure that with clean scissors, the cylindrical shape luffa of getting ready is cut into a large amount of bulks, the scope that the wide * of long * is high is 0.5cm*0.5cm*0.5cm to 1.0cm*1.0cm*1.0cm, obtains block luffa (being luffa fritter); The block luffa shearing is put into the beaker of the 10L cleaning with distilled water, poured into 20% sodium hydrate aqueous solution 6～8L, soak 5h, then filter solution, clean luffa fritter with distilled water extremely neutral; Then luffa fritter is poured in clean screen cloth, related screen cloth is put into baking oven dries 12h at 60～65 DEG C, obtains the pretreated dried loofah of alkali of fritter;
3) activation: weigh the pretreated dried loofah of 2g fritter alkali, put into the flask with three necks,round bottom of 1L, two side mouths of there-necked flask cover (note: only uncap when needs add medicine with glass cover, after adding medicine, continue to cover, all so operations in whole course of reaction), stretch into electric mixer from the main mouth of there-necked flask, add 120ml N from there-necked flask side mouth with little glass funnel, dinethylformamide (DMF) solution, 60ml epoxychloropropane solution, unlatching electric stirring continues to be uniformly mixed solution and (makes the abundant haptoreaction of luffa and reagent, rotating speed is at 120～180r/min, in whole course of reaction, stir and do not stop) bathing heating 0.5～1h at 85 DEG C of Water Unders,
4) crosslinked: add 8ml ethylenediamine to make crosslinking agent, rotating speed is 120～180r/min, bathe heating 1h at 85 DEG C of Water Unders;
5) amination: add 10ml triethylamine aqueous solution, rotating speed is 120～180r/min, continues 85 DEG C of heating water bath 2h, obtains amination luffa (being preliminary product);
6) clean: preliminary product is poured out from there-necked flask to clean screen cloth, then proceed to immediately in the large beaker of 500ml of the hot pure water of 70 DEG C of left and right of splendid attire, and strong stirring 5～10min (described strong stirring refers to that speed of agitator is 200～300r/min), then use screen filtration; Repeat this cleaning step to filtrate without obvious residue;
7) preliminary product after cleaning is gone to screen cloth, under 60～65 DEG C of conditions, dry 12h, obtain biomass water processing environment functional material-anion-exchange fibre (final products, sealing is stored in drying box, for subsequent use).
The experimental technique experiment condition of embodiment 3 eliminating rate of absorption is with embodiment 2, and result is identical with embodiment 2.
In order better to show the performance of this biomass water processing environment functional material-anion-exchange fibre, embodiment 1, embodiment 2, embodiment 3 to be adsorbed to saturated product and carry out adsorption-regeneration experiment, experimental technique and result are as follows:
The 0.1g that gets equivalent adsorbs saturated product, is transferred to the common centrifuge tube of 50ml, adds the HCl solution of 30ml0.1mol/L, in centrifuge, after centrifugal 30min, uses washed with de-ionized water 2 times, at 60 DEG C, dries 12h, re-starts absorption and desorption experiment.The KNO of experiment condition: 50ml2mg/L (referring to nitrate concentration)
3the aqueous solution; Biomass water processing environment functional material-anion-exchange fibre dosage 0.1g; 20 ± 1 DEG C of temperature; Vibration rotating speed 120r/min; Duration of oscillation 60min, by embodiment 2 product obtained experimental data results, as Fig. 4, the experimental result of embodiment 1 and embodiment 3 is substantially the same manner as Example 2.
Long life cycle by the known product of exchange regeneration tests, adsorption capacity reduces slower, there is no obvious downward trend, tests only 0.1g reconstituted product still can keep to the nitrate ion of experimental solutions 85% clearance to four times.
Embodiment 4:
Substantially the same manner as Example 2, difference is that the bath temperature of three reactions steps is followed successively by: 90 DEG C, 85 DEG C, 90 DEG C.
The experimental technique experiment condition of eliminating rate of absorption is with embodiment 2, and result is identical with embodiment 2.
Regeneration tests is with embodiment 2, and result is identical with embodiment 2.
Embodiment 5:
Substantially the same manner as Example 2, difference is that the pure water in last cleaning products stage replaces with the NaCl solution of 0.1mol/L.
The experimental technique experiment condition of eliminating rate of absorption is with embodiment 2, and result is identical with embodiment 2.
Regeneration tests is with embodiment 2, and result is identical with embodiment 2.
Embodiment 6:
Substantially the same manner as Example 2, what difference was that raw material uses is complete small cylinder shape luffa, according to the quality of small cylinder shape luffa, and the consumption of corresponding micro-iodide medicine.There-necked flask replaces with the bigbore beaker of 1L, adds thermal agitation with magnetic stirring apparatus that can temperature control.
The experimental technique experiment condition of eliminating rate of absorption is with embodiment 2, and result is identical with embodiment 2.
Regeneration tests is with embodiment 2, and result is identical with embodiment 2.
Embodiment 7:
Substantially the same manner as Example 2, difference is: 2) the cylinder luffa of getting ready is carried out to pretreatment: it is highly the small cylinder of 3～7cm that the cylinder luffa of getting ready is sawn into, and obtains the luffa of small cylinder; The luffa of small cylinder is soaked to 8～12h in distilled water; Then be placed in 60～65 DEG C of baking ovens and dry 12h, obtain the dried loofah of fritter.
The experimental technique experiment condition of eliminating rate of absorption is with embodiment 2, and result is identical with embodiment 2.
Regeneration tests is with embodiment 2, and result is identical with embodiment 2.
Embodiment 8:
Substantially the same manner as Example 2, difference is: the amination elementary reaction time is 3h.
The experimental technique experiment condition of eliminating rate of absorption is with embodiment 2, and result is identical with embodiment 2.
Regeneration tests is with embodiment 2, and result is identical with embodiment 2.
Embodiment 9:
Substantially the same manner as Example 2, difference is: the amination elementary reaction time is 2.5h.
The experimental technique experiment condition of eliminating rate of absorption is with embodiment 2, and result is identical with embodiment 2.
Regeneration tests is with embodiment 2, and result is identical with embodiment 2.
Embodiment 10:
Substantially the same manner as Example 2, difference is: amination: add 20ml triethylamine aqueous solution, continue 85 DEG C of heating water bath 2h, obtain amination luffa (being preliminary product).
The experimental technique experiment condition of eliminating rate of absorption is with embodiment 2, and result is identical with embodiment 2.
Regeneration tests is with embodiment 2, and result is identical with embodiment 2.
Embodiment 11:
Substantially the same manner as Example 2, difference is: amination: add 30ml triethylamine aqueous solution, continue 85 DEG C of heating water bath 4h, obtain amination luffa (being preliminary product).
The experimental technique experiment condition of eliminating rate of absorption is with embodiment 2, and result is identical with embodiment 2.
Regeneration tests is with embodiment 2, and result is identical with embodiment 2.
Comparative example
1, the patent that is 201210110280.2 with reference to application number, the ion-exchange fibre of preparation using pyridine as catalyst, its product as shown in Figure 6, with rufous or bronzing, if while using colored ion-exchange fibre product to carry out adsorption test, can make solution band rufous or bronzing, can make like this solution band look being adsorbed, cause solution colourity to increase and content of organics increase, also can cause secondary pollution.
2, the patent that is 201310106082.3 with reference to application number, preparation using ethylenediamine as crosslinking agent, dimethylamine is as the ion-exchange fibre of grafting agent, its product as shown in Figure 7, participate in chemical reaction as crosslinking agent with ethylenediamine, its reaction equation is shown in Fig. 1, grafting amination occurs in 3 hydroxyl group sites, obtain the ion-exchange fibre product that contains tertiary amine group, the color of the color of gained ion-exchange fibre product and raw materials luffa itself is close, for light yellow, adsorption effect is only 80% left and right.
And the present invention makes amination reagent with triethylamine, its reaction equation is shown in Fig. 2, and grafting amination occurs in 4 hydroxyl group sites, obtains containing quaternary amines ion-exchange fibre product, and adsorption effect can improve 25% in theory; In the time of identical adsorbate addition, patent 201310106082.3 products reach 80% to anion-nitrate adsorption efficiency, and product of the present invention reaches 95%, has improved approximately 20%.Meanwhile, products obtained therefrom of the present invention and solid colour raw materials luffa itself, its technique is cleaning ambient close friend more, and cleaning step is also more succinct.
The above is only the preferred embodiment of the present invention, it should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise of the invention, can also make some improvement and conversion, and these all belong to protection scope of the present invention.
Claims (5)
1. a preparation method for biomass water processing environment functional material, is characterized in that it comprises the steps:
1) activation: the dried loofah that weighs 1～3g alkali treatment is placed in the mixed solution of 80～120ml DMF (DMF) and 20-80ml epoxychloropropane, stirs 0.5～2h under 70～100 DEG C of condition of water bath heating;
2) crosslinked: to add 5～10ml ethylenediamine to make crosslinking agent, continue 70～100 DEG C of heating water bath 0.5～2h;
3) amination: add 5～30ml triethylamine aqueous solution, continue 70～100 DEG C of heating water bath 2～4h, obtain amination luffa;
4) clean: amination luffa is inserted in hot pure water and strong stirring 5～10min immediately, then filters, repeat this cleaning step to filtrate without residue;
5) the amination luffa after cleaning is dried, obtain biomass water processing environment functional material-anion-exchange fibre.
2. the preparation method of a kind of biomass water processing environment functional material according to claim 1, the concrete grammar that it is characterized in that described dried loofah alkali treatment is as follows: first, by real the vegetable silk melon and fruit after the normal growth maturation sponge gourd seed of epidermis and hole inside of removing, through natural air drying or after drying, cut into cylinder, obtain cylinder luffa [inside interweave the string vascular bundle cylinder (strong but pliable in texture) that is netted]; Then the cylinder luffa of getting ready is cut into block luffa (being luffa fritter), block luffa is soaked to 5～10h in 5%～20% sodium hydrate aqueous solution, then solution is filtered, luffa is cleaned to neutral, finally luffa is dried, obtain the dried loofah of alkali treatment.
3. the preparation method of a kind of biomass water processing environment functional material according to claim 2, is characterized in that described alkali treatment and step 5) described in dry temperature be 60～65 DEG C, the time is 12h.
4. the preparation method of a kind of biomass water processing environment functional material according to claim 1, is characterized in that step 4) described hot pure water is 50-80 DEG C.
5. the preparation method of a kind of biomass water processing environment functional material according to claim 1, is characterized in that step 4) described strong stirring refers to that speed of agitator is 200～300r/min.
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| CN109179615A (en) * | 2018-11-01 | 2019-01-11 | 南京大学 | A kind of modified cotton fiber coagulant and its preparation method and application |
| CN113210023A (en) * | 2021-04-29 | 2021-08-06 | 黄山学院 | Biochar-based anion exchanger and preparation method and application thereof |
| CN113774673A (en) * | 2021-08-23 | 2021-12-10 | 安安(中国)有限公司 | Processing method of super-simulation leather artificial synthetic leather |
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| CN109179615A (en) * | 2018-11-01 | 2019-01-11 | 南京大学 | A kind of modified cotton fiber coagulant and its preparation method and application |
| CN109179615B (en) * | 2018-11-01 | 2020-08-14 | 南京大学 | Modified cotton fiber adsorbent for removing nitrate nitrogen and preparation method and application thereof |
| CN113210023A (en) * | 2021-04-29 | 2021-08-06 | 黄山学院 | Biochar-based anion exchanger and preparation method and application thereof |
| CN113774673A (en) * | 2021-08-23 | 2021-12-10 | 安安(中国)有限公司 | Processing method of super-simulation leather artificial synthetic leather |
| CN113774673B (en) * | 2021-08-23 | 2023-12-15 | 安安(中国)有限公司 | Processing method of super-imitation leather artificial synthetic leather |
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