CN105439270A - Moringa plant flocculant particle and preparation method and applications thereof - Google Patents
Moringa plant flocculant particle and preparation method and applications thereof Download PDFInfo
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- CN105439270A CN105439270A CN201510779111.1A CN201510779111A CN105439270A CN 105439270 A CN105439270 A CN 105439270A CN 201510779111 A CN201510779111 A CN 201510779111A CN 105439270 A CN105439270 A CN 105439270A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5263—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using natural chemical compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
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- General Chemical & Material Sciences (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
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Abstract
The invention discloses a moringa plant flocculant particle and a preparation method and applications thereof. A flocculant is prepared from the following raw materials: moringa seeds, chitosan, sodium alginate, and the like; and the preparation method is simple. The flocculant particle disclosed by the invention has a good flocculation effect on particulate matters in water, thereby improving the transparency of the water. The optimal particle preparation condition is as follows: the particle is prepared from 1-3% of calcium chloride, 12-18g/L of sodium alginate, 1.5-2g/L of a chitosan solution and 7-8g/L of a moringa extract. The protein encapsulation efficiency of the particle obtained under the optimal condition is 30-50%. The particle can release 50-70% of proteins in 60 min. The particle can slowly release flocculent active proteins in the process of being used. Because the particle has pores, the particle can float on the water surface, thereby facilitating the recycling of the particle. The flocculant particle prepared according to the invention facilitates the utilization and transport of plant flocculants.
Description
Technical field
The invention belongs to water treatment agent preparation field, relate to a kind of Moringa oleifera flocculation agent particle and its production and use.
Background technology
In the process such as natural disaster and mankind's activity, a large amount of organic and inorganic material entered environments.Too much chemical substance enters the change that water body causes water quality, and as smelly in water body blackout, turbidity raises, toxic substance increases, pathogenic micro-organism grows, and causes tremendous influence to the productive life of the mankind.Various suspended particulates in water body directly affect the vertical distribution of illumination in water body, thus affect the growth and breeding of submerged plant.Reduce water turbidity and can improve illumination condition under water, promote the growth of aquatic vegetation, thus play the effect that waterplant repairs water surrounding, improve water quality.The material causing water turbidity to raise mainly contains planktonic organism and other microorganisms such as clay, organic-inorganic material, algae.Reduce water turbidity, improving water transparency is the essential step recovering water quality, reduce water turbidity, raising water transparency is commonly used flocculation agent and is mainly comprised inorganic and organic floculant, as aluminum chloride, Tai-Ace S 150, iron(ic) chloride, polymerize aluminum chloride and polyacrylamide etc., chemical floc has and good goes turbidity effect.But, in use not there is following shortcoming in chemical floc, as good in flocculation efficiency under cold condition, change residual chemicals in the large and water of water body specific conductivity, mud generation and be detrimental to health (absorption as aluminium can cause senile dementia) etc.Plant flocculation agent has drawn from the material of easy degraded of the Nature, plant flocculation agent can not only reach chemical flocculation and flocculating effect, and secondary pollution can not be produced as chemical floc.
Moringa is the plant flocculation agent of current most study, and research proves that Moringa is a kind of environmental friendliness and can the potential flocculation agent of the inorganic flocculating agent such as substitution of Al salt.Active substance in moringa seeds not only can flocculate the clay particle thing of water body, the algae etc. also can flocculated in water body.But the active substance extraction comparison in moringa seeds is loaded down with trivial details, the active substance extracted is embedded into chitosan and sodium alginate particle, is conducive to easy to use.
Chitosan is a kind of natural polymer straight-chain polysaccharide, is prepared by de-acetyl chitin, can be dissolved in diluted acid; The natural polymer that sodium alginate is soluble in water, is present in phaeophyta.Chitosan molecule chain can generate polyelectrolyte film with a large amount of carboxyl on sodium alginate molecular chain containing a large amount of primary amino under the sucking action of positive and negative electric charge.Sodium alginate soln is directly instilled reaction in the mixing solutions of chitosan and calcium chloride and form capsule; Finally obtaining inner is liquid capsule, comprises three-decker: chitosan precipitation layer, chitosan/sodium alginate complexing layer and alginate calcium coacervate.
Summary of the invention
The object of the invention is to solve problems of the prior art, and a kind of Moringa oleifera flocculation agent particle and its production and use is provided.Aquatic particle content is reduced by the present invention.This method mainly with natural materialss such as Moringa, chitosan, sodium alginates for raw material, production environment friendly flocculation agent, realize water turbidity reduce.
For achieving the above object, the method that the present invention adopts is:
A preparation method for Moringa oleifera flocculation agent particle, comprises the following steps:
1) chitosan and Calcium Chloride Powder Anhydrous being dissolved in volume fraction is in the distilled water solution of the acetic acid of 0.8% ~ 1.2%, be mixed with chitosan-calcium chloride mixing solutions, wherein the concentration of chitosan in mixing solutions is 1.5 ~ 2g/L, and the mass concentration of calcium chloride in mixing solutions is 1 ~ 3%;
2) compound concentration is the Moringa extracting solution of 7 ~ 8g/L;
3) sodium alginate is dissolved in above-mentioned Moringa extracting solution, makes the concentration of sodium alginate be 12 ~ 18g/L;
4) by step 3) in the mixing solutions that obtains constantly be added drop-wise to step 1) in chitosan-calcium chloride mixing solutions in, stir 8 ~ 12min, form gel;
5) by step 4) in the gel-filtration that obtains, wash away on gel after residuals with distilled water, at normal temperatures vacuum-drying, namely obtain plant flocculation agent particle.
The concrete compound method of described Moringa extracting solution is: moringa seeds shells, grind, sieving obtains moringa seeds powder, by ethanol and moringa seeds powder mixing degrease, and dries up with nitrogen, namely obtains the moringa seeds powder of degrease; The NaCl solution of the moringa seeds powder mixing 20mL of every 0.2g degrease, then by stirring 30 ~ 40min, filtration, obtain Moringa extracting solution, the concentration of the NaCl solution used in this step is 1mol/L.
The Moringa oleifera flocculation agent particle utilizing described method to prepare, embeds the protein into 30-50% in this flocculation agent particle, when particle is positioned in water, go out the protein of 50%-70% at 60min energy and entropy.
A purposes for described Moringa oleifera flocculation agent particle, in advance with water by the protein stripping in Moringa oleifera flocculation agent particle, Moringa oleifera flocculation agent particle is reclaimed, and dissolution fluid directly joins in pending water body.
The leaching process of Moringa relates to the grinding of moringa seeds, salts solution extracts, filters.If directly Moringa powder is added water body, the load of water body organic matter greatly can be increased.Therefore, Moringa extracting solution is made Moringa particle by batch in advance, greatly can reduce the fussy degree of use, is convenient to user and uses.And flocculation agent disclosed by the invention, have eco-friendly feature, employing natural materials is raw material, nontoxic, easily degrades; Water turbidity can be reduced; Reclaim, easy to use.
Accompanying drawing explanation
Fig. 1 is the turbidity variation diagram of aqueous suspension ofkaolin under different Moringa liquid usage quantity.
Embodiment
Below in conjunction with specific examples, the invention will be further described.Thinking of the present invention extracts the flocculation activity material in Moringa, is mixed with certain density sodium alginate Moringa extracting solution; Prepare certain density chitosan calcium chloride solution; Sodium alginate Moringa extracting solution and chitosan calcium chloride solution react, and are formed and have flocculation activity material grains.
Embodiment 1
A preparation method for Moringa oleifera flocculation agent particle, the method comprises the following steps:
1) chitosan and Calcium Chloride Powder Anhydrous being dissolved in volume fraction is in the distilled water solution of the acetic acid of 1%, be mixed with chitosan-calcium chloride mixing solutions, wherein the concentration of chitosan in mixing solutions is 1.5g/L, and the mass concentration of calcium chloride in mixing solutions is 2%;
2) the concrete compound method of Moringa extracting solution is: moringa seeds shells, grind, sieving obtains moringa seeds powder, by ethanol and moringa seeds powder mixing degrease, and dries up with nitrogen, namely obtains the moringa seeds powder of degrease; The NaCl solution of the moringa seeds powder mixing 20mL of every 0.2g degrease, the concentration of NaCl solution is 1mol/L, then by low rate mixing 30min, filtration, obtains Moringa extracting solution; Compound concentration is the Moringa extracting solution of 8g/L;
3) sodium alginate is dissolved in above-mentioned Moringa extracting solution, makes the concentration of sodium alginate be 15g/L;
4) by step 3) in the mixing solutions that obtains constantly be added drop-wise to step 1) in chitosan-calcium chloride mixing solutions in, low rate mixing 10min, forms gel;
5) by step 4) in the gel-filtration that obtains, wash away on gel after residuals with distilled water, at 25 DEG C of vacuum-drying 24h, namely obtain plant flocculation agent particle, and particle have good form, is separated from each other between particle, not easily agglomerating.
Embodiment 2
A preparation method for Moringa oleifera flocculation agent particle, the method comprises the following steps:
1) chitosan and Calcium Chloride Powder Anhydrous being dissolved in volume fraction is in the distilled water solution of the acetic acid of 1%, be mixed with chitosan-calcium chloride mixing solutions, wherein the concentration of chitosan in mixing solutions is 2g/L, and the mass concentration of calcium chloride in mixing solutions is 1.5%;
2) the concrete compound method of Moringa extracting solution is: moringa seeds shells, grind, sieving obtains moringa seeds powder, by ethanol and moringa seeds powder mixing degrease, and dries up with nitrogen, namely obtains the moringa seeds powder of degrease; The NaCl solution of the moringa seeds powder mixing 20mL of every 0.2g degrease, the concentration of NaCl solution is 1mol/L, then by low rate mixing 30min, filtration, obtains Moringa extracting solution; Compound concentration is the Moringa extracting solution of 7g/L;
3) sodium alginate is dissolved in above-mentioned Moringa extracting solution, makes the concentration of sodium alginate be 18g/L;
4) by step 3) in the mixing solutions that obtains constantly be added drop-wise to step 1) in chitosan-calcium chloride mixing solutions in, low rate mixing 10min, forms gel;
5) by step 4) in the gel-filtration that obtains, wash away on gel after residuals with distilled water, at 25 DEG C of vacuum-drying 24h, namely obtain plant flocculation agent particle.
Below the flocculating effect of Moringa liquid is measured:
Select the extracting solution of NaCl solution as moringa seeds of 1M.0.5g degrease powder mixes with the NaCl solution of the 1M of 50mL, stirs 30min, and filter, filtrate is stand-by.
(2) preparing turbidity is the aqueous suspension ofkaolin of 50NTU, regulates pH to 7.0 with 0.1MHCl and NaOH.
(3) this suspension liquid of 200mL is poured in 250mL beaker, under beaker being put into six coagulations stirring instrument, add the NaCl moringa seeds extracting solution of different volumes, first stir 2min with the speed of 200rpm/min, 30min is stirred again with the speed of 50rpm/min, measure the turbidity after leaving standstill 30min, 60min, 90min respectively.As can be seen from Figure 1, the dosage of final turbidity and Moringa flocculation agent is inversely proportional to, and optimum concn is 40mg/L, under this concentration, after leaving standstill 30min, turbidity can be that the turbidity of the aqueous suspension ofkaolin of 50NTU drops to about 15NTU by Moringa, and turbidity removal rate reaches more than 70%; After leaving standstill 60min, turbidity drops to below 10NTU, and reach a state comparatively clarified, turbidity removal rate reaches more than 80%; After leaving standstill 90min, turbidity drops to about 5NTU, and reach a state comparatively clarified, turbidity removal rate reaches more than 90%.
The material in moringa seeds with flocculation ability is protein, and the protein content therefore measuring stripping liquid can illustrate the content of active substance in particle.Below the protein encapsulation rate of the flocculation agent particle obtained in embodiment 1 and embodiment 2 and leachable performance are measured.
Flocculation agent granule protein matter entrapment efficiency determination:
By the Moringa oleifera flocculation agent particle prepared in embodiment 1 and 2, grind into powder in mortar respectively, take the Moringa oleifera flocculation agent powder prepared in 0.05g embodiment 1 and 2 respectively, add the distilled water of 10mL, under 250rpm, 25 DEG C of conditions, shake 60min.Centrifuging and taking supernatant liquor, Coomassie Brilliant Blue surveys protein content.Result shows: the average encapsulation rate of the protein of the flocculation agent particle that embodiment 1 obtains is 42 ~ 50%; The average encapsulation rate of the protein of the flocculation agent particle that embodiment 2 obtains is 30 ~ 46%.
Flocculation agent particles being soluble goes out protein content determination:
Take the Moringa oleifera flocculation agent particle prepared in 0.05g embodiment 1 and 2 respectively, add the distilled water of 10mL, under 250rpm, 25 DEG C of conditions, shake 60min.Get supernatant liquor, Coomassie Brilliant Blue surveys protein content.Result shows: the amount of the protein stripping of the flocculation agent particle that embodiment 1 obtains accounts for the 55-70% of protein content in particle; The average encapsulation rate of the protein of the flocculation agent particle that embodiment 2 obtains is 50 ~ 66%.
Show thus, the Moringa oleifera flocculation agent particle that the present invention prepares has good encapsulation rate, and leachable to have flocculation activity protein content higher, possesses prospect of the application.In addition, from the flocculation agent particle form prepared, particle each other resolution is high, and form is intact, does not almost have agglomerating phenomenon.And due to this flocculation agent be prepared by the plant that environmental pollution is less, therefore also there is eco-friendly feature.
The Moringa oleifera flocculation agent particle that above-mentioned preparation method obtains in use; can prior water by the protein stripping in Moringa oleifera flocculation agent particle; Moringa oleifera flocculation agent particle is reclaimed, and dissolution fluid directly joins in pending water body, reaches the object of flocculation.
Claims (4)
1. a preparation method for Moringa oleifera flocculation agent particle, is characterized in that, the method comprises the following steps:
1) chitosan and Calcium Chloride Powder Anhydrous being dissolved in volume fraction is in the distilled water solution of the acetic acid of 0.8% ~ 1.2%, be mixed with chitosan-calcium chloride mixing solutions, wherein the concentration of chitosan in mixing solutions is 1.5 ~ 2g/L, and the mass concentration of calcium chloride in mixing solutions is 1 ~ 3%;
2) compound concentration is the Moringa extracting solution of 7 ~ 8g/L;
3) sodium alginate is dissolved in above-mentioned Moringa extracting solution, makes the concentration of sodium alginate be 12 ~ 18g/L;
4) by step 3) in the mixing solutions that obtains constantly be added drop-wise to step 1) in chitosan-calcium chloride mixing solutions in, stir 8 ~ 12min, form gel;
5) by step 4) in the gel-filtration that obtains, wash away on gel after residuals with distilled water, at normal temperatures vacuum-drying, namely obtain plant flocculation agent particle.
2. the preparation method of Moringa oleifera flocculation agent particle as claimed in claim 1, it is characterized in that, the concrete compound method of described Moringa extracting solution is: moringa seeds shells, grind, sieving obtains moringa seeds powder, by ethanol and moringa seeds powder mixing degrease, and dry up with nitrogen, namely obtain the moringa seeds powder of degrease; The NaCl solution of the moringa seeds powder mixing 20mL of every 0.2g degrease, the concentration of NaCl solution is 1mol/L, then by stirring 30 ~ 40min, filtration, obtains Moringa extracting solution.
3. the Moringa oleifera flocculation agent particle for preparing of the method for claim 1, is characterized in that, embed the protein into 30-50% in this flocculation agent particle, when particle is positioned in water, go out the protein of 50%-70% at 60min energy and entropy.
4. the purposes of a Moringa oleifera flocculation agent particle as claimed in claim 1; it is characterized in that; prior water, by the protein stripping in Moringa oleifera flocculation agent particle, reclaimed by Moringa oleifera flocculation agent particle, and dissolution fluid directly joins in pending water body.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105692843A (en) * | 2016-04-20 | 2016-06-22 | 上海海洋大学 | Water purifying agent on basis of proteins of moringa oleifera seeds and method for preparing water purifying agent |
| CN107285480A (en) * | 2017-06-27 | 2017-10-24 | 兰溪市酉泽饲料技术服务有限公司 | Efficient water-purifying agent based on biology enzyme |
| CN107298488A (en) * | 2017-08-29 | 2017-10-27 | 兰溪市酉泽饲料技术服务有限公司 | A kind of high efficiency composition water purification agent and preparation method thereof |
| CN107434288A (en) * | 2017-06-27 | 2017-12-05 | 兰溪市酉泽饲料技术服务有限公司 | A kind of water purification agent based on Moringa and preparation method thereof |
| CN107459144A (en) * | 2017-07-31 | 2017-12-12 | 浦江县酉泽水产科技有限公司 | Water quality treatment agent used for aquiculture |
| CN107555606A (en) * | 2017-07-31 | 2018-01-09 | 兰溪市普润斯水产养殖技术有限公司 | The preparation method of water quality treatment agent used for aquiculture |
| CN109264866A (en) * | 2018-09-11 | 2019-01-25 | 湖北理工学院 | A kind of preparation method and application of the hygrophyte fiberfill of strengthened artificial wet land denitrogenation |
| CN111204929A (en) * | 2020-01-17 | 2020-05-29 | 浙江财经大学 | Municipal sewage treatment method based on biological contact oxidation process |
| CN114162947A (en) * | 2021-11-24 | 2022-03-11 | 上海应用技术大学 | Preparation method of moringa seed meal natural composite organic flocculant |
| CN115124124A (en) * | 2021-03-25 | 2022-09-30 | 北京科技大学 | Black water coagulation anaerobic fermentation method and system based on plant flocculant |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105692843A (en) * | 2016-04-20 | 2016-06-22 | 上海海洋大学 | Water purifying agent on basis of proteins of moringa oleifera seeds and method for preparing water purifying agent |
| CN107285480A (en) * | 2017-06-27 | 2017-10-24 | 兰溪市酉泽饲料技术服务有限公司 | Efficient water-purifying agent based on biology enzyme |
| CN107434288A (en) * | 2017-06-27 | 2017-12-05 | 兰溪市酉泽饲料技术服务有限公司 | A kind of water purification agent based on Moringa and preparation method thereof |
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| CN107298488A (en) * | 2017-08-29 | 2017-10-27 | 兰溪市酉泽饲料技术服务有限公司 | A kind of high efficiency composition water purification agent and preparation method thereof |
| CN109264866A (en) * | 2018-09-11 | 2019-01-25 | 湖北理工学院 | A kind of preparation method and application of the hygrophyte fiberfill of strengthened artificial wet land denitrogenation |
| CN109264866B (en) * | 2018-09-11 | 2021-08-20 | 湖北理工学院 | Preparation method and application of hygrophyte plant fiber filler for strengthening denitrification of constructed wetland |
| CN111204929A (en) * | 2020-01-17 | 2020-05-29 | 浙江财经大学 | Municipal sewage treatment method based on biological contact oxidation process |
| CN111204929B (en) * | 2020-01-17 | 2023-04-07 | 内江师范学院 | Municipal sewage treatment method based on biological contact oxidation process |
| CN115124124A (en) * | 2021-03-25 | 2022-09-30 | 北京科技大学 | Black water coagulation anaerobic fermentation method and system based on plant flocculant |
| CN114162947A (en) * | 2021-11-24 | 2022-03-11 | 上海应用技术大学 | Preparation method of moringa seed meal natural composite organic flocculant |
| CN114162947B (en) * | 2021-11-24 | 2023-10-31 | 上海应用技术大学 | Preparation method of Moringa seed meal natural composite organic flocculant |
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