CN110819659A - Preparation method of seaweed organic polymer - Google Patents

Abstract

The invention relates to a preparation method of a seaweed organic polymer, which takes deep-sea seaweed as a main raw material, and the seaweed organic polymer is obtained by acidification, low-temperature drying, alkalization, filtration, dehydration and other processes. The invention has the beneficial effects that: the seaweed organic polymer obtained by the invention has the functions of catalytic oxidation and flocculation sedimentation, can be used with organic acid, hydrogen peroxide, sulfuric acid or other acidic solutions to realize redox, and can be applied to treatment of heavy metal polluted soil, solid waste and sewage.

Description

A kind of preparation method of seaweed organic polymer

technical field

The invention belongs to the technical field of environmental protection materials, and in particular relates to a preparation method of a seaweed organic polymer.

Background technique

Seaweed is the flora with the most abundant marine biodiversity, mainly a general term for marine algae such as kelp, seaweed, wakame, and stone lily. Organisms that produce energy through photosynthesis. They are generally considered to be simple plants, the main features are: no vascular tissue, no real root, stem, leaf differentiation phenomenon; no flowering, no fruit and seeds; no specialized protective tissue of reproductive organs, often directly composed of a single Cells produce spores or gametes; and no embryonic formation.

Seaweed itself has the function of absorbing various inorganic elements in seawater. People have already used seaweed as raw materials to make products such as alginate and sodium alginate, which are widely used. Through years of research, foreign scientists have successfully used scientific methods to extract a variety of organic substances from deep-sea algae and produced related products. This organic polymer has been used in many fields based on its adsorption and binding functions.

SUMMARY OF THE INVENTION

In order to solve the problems existing in the prior art, the present invention provides a method for preparing a seaweed organic polymer. The produced seaweed organic polymer is a seaweed organic polymer with comprehensive catalytic oxidation and flocculation settling functions, and its main components are: Organic products.

The purpose of this invention is to provide a kind of preparation method of seaweed organic polymer.

According to the preparation method of the seaweed organic polymer according to the specific embodiment of the present invention, the method comprises the following steps:

(1) crushing and stirring the deep-sea seaweed to form a paste-like seaweed mud;

(2) in the described seaweed mud obtained in step (1), add organic acid to make it acidified;

(3) drying the seaweed mud after the acidification of step (2) at a low temperature, so that the seaweed mud becomes powdery to form seaweed powder;

(4) pour water and sodium hydroxide solution successively into the seaweed powder obtained in step (3), soak for 5-8 hours to form composite seaweed active enzyme liquid;

(5) filter and extract the compound seaweed active enzyme liquid obtained in step (4), namely obtain seaweed extract;

(6) dehydrating the seaweed extract obtained in step (5) by using a centrifugal device to form a seaweed organic polymer.

The active substances in seaweed include: fucoidan, protects gastric mucosa, improves immunity, and prevents anti-tumor; alginate, absorbs heavy metals, clears intestines and detoxifies, helps in weight loss, drug slow-release and controlled-release agent, moisturizing, repairing, Anti-radiation; brown algae polyphenols, antibacterial, antioxidant, anticoagulant, anti-tumor, chemical defense, etc.; fucoxanthin, promotes fat decomposition, weight loss, anti-oxidation, anti-tumor; mannitol, natural diuretic, reduces brain Internal pressure, intraocular pressure; kelp sugar, inhibits transaminase activity, lowers cholesterol, softens blood vessels; polyunsaturated fatty acids, prevents cardiovascular and cerebrovascular diseases, and is necessary for children's brain and visual development.

According to the preparation method of the seaweed organic polymer according to the specific embodiment of the present invention, wherein, in step (1), the particle fineness of the paste-like seaweed mud is 40-80 mesh.

According to the preparation method of the seaweed organic polymer according to the specific embodiment of the present invention, wherein, in step (1), the mass concentration of the paste-like seaweed mud is 10-20%.

According to the preparation method of the seaweed organic polymer according to the specific embodiment of the present invention, in step (2), the organic acid is citric acid.

According to the preparation method of the seaweed organic polymer according to the specific embodiment of the present invention, the acidification time of the citric acid is 2 hours.

According to the preparation method of the seaweed organic polymer according to the specific embodiment of the present invention, wherein, in step (2), the pH of the acidified seaweed mud is 3.6-4.5.

According to the preparation method of the seaweed organic polymer according to the specific embodiment of the present invention, wherein, in step (3), the temperature of the low-temperature drying is 60-80° C., and the time of the low-temperature drying is 1-2 hours.

According to the preparation method of the seaweed organic polymer according to the specific embodiment of the present invention, further, in step (3), the moisture content of the seaweed powder is 7-10%.

According to the preparation method of the seaweed organic polymer according to the specific embodiment of the present invention, further, in step (4), the concentration of the sodium hydroxide solution is 35-40%, and water is poured into the seaweed powder to cover the seaweed powder 1- 2cm, the addition amount of sodium hydroxide solution is 20-30% of the weight of the poured water.

According to the preparation method of the seaweed organic polymer according to the specific embodiment of the present invention, wherein, in step (6), the speed of the dehydration and centrifugation is 3000-4000r/min, the time of centrifugation is 5-10 minutes, and the temperature of centrifugation is 4-6°C.

According to the preparation method of the seaweed organic polymer according to the specific embodiment of the present invention, further, in step (6), the seaweed organic polymer is a liquid viscoelastic polymer, and when the seaweed organic polymer needs to be made into a solid state, use The drying equipment can process the liquid seaweed organic polymer into solid powder. The dehydration process in the prior art often adopts a low-temperature drying method, but this method consumes a lot of energy and loses a lot of active substances.

The seaweed organic polymer obtained by the invention is a liquid viscoelastic seaweed organic polymer based on deep sea seaweed extract, and the product form is a liquid viscoelastic polymer or a solid polymer; the finished product is strongly alkaline and easily soluble in water.

Compared with the prior art, the present invention has the following beneficial effects:

(1) The seaweed organic polymer obtained by the present invention mainly has catalytic oxidation and flocculation sedimentation functions, can be used simultaneously with organic acid, hydrogen peroxide, sulfuric acid or other acidic solutions, realizes redox, can be applied to heavy metal polluted soil, solid waste and sewage treatment;

(2) The seaweed organic polymer obtained by the present invention is used alone and is applied to sewage treatment without adding other chemical agents for flocculation and sedimentation. Limits and reaction rates to reduce subsequent solid waste disposal costs;

(3) The seaweed organic polymer obtained by the present invention can treat the soil without damaging the soil, without causing secondary pollution of the soil, without increasing the capacity ratio of the treated soil, saving the cost of subsequent treatment, and catalyzing the organic acid Reduction of hexavalent chromium; especially the treatment of heavy metal contaminated soil remediation and soil compaction or mineralization caused by long-term enrichment of pesticides and fertilizers.

Description of drawings

Fig. 1 is the process flow diagram of the preparation method of the seaweed organic polymer in the embodiment of the present invention.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other implementations obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

As shown in Figure 1, in some more specific embodiments, the preparation method of the seaweed organic polymer specifically comprises the following steps:

(1) the deep-sea seaweed is placed in the container to be crushed and stirred to form a paste-like seaweed mud;

(2) adding organic acid to the described seaweed mud obtained in step (1) and making it acidified;

(3) drying the seaweed mud after the acidification of step (2) at a low temperature, so that the seaweed mud becomes powdery to form seaweed powder;

(4) pour water and sodium hydroxide solution successively into the seaweed powder obtained in step (3), soak for 5-8 hours to form composite seaweed active enzyme liquid;

(5) filter and extract the compound seaweed active enzyme liquid obtained in step (4), namely obtain seaweed extract;

(6) dehydrating the seaweed extract obtained in step (5) by using a centrifugal device to form a seaweed organic polymer.

Example 1

The present embodiment provides a seaweed organic polymer, and the preparation method of the seaweed organic polymer includes the following steps:

(1) crushing and stirring the deep-sea seaweed to form a paste-like seaweed mud;

(2) in the described seaweed mud obtained in step (1), add citric acid to make it acidified;

(3) drying the seaweed mud after the acidification of step (2) at a low temperature, so that the seaweed mud becomes powdery to form seaweed powder;

(4) pour water and sodium hydroxide solution successively into the seaweed powder obtained in step (3), soak for 5 hours, form composite seaweed active enzyme liquid;

(5) filter and extract the compound seaweed active enzyme liquid obtained in step (4), namely obtain seaweed extract;

(6) dehydrating the seaweed extract obtained in step (5) by using a centrifugal device to form a seaweed organic polymer.

Example 2

The present embodiment provides a seaweed organic polymer, and the preparation method of the seaweed organic polymer includes the following steps:

(1) crushing and stirring the deep-sea seaweed to form a paste-like seaweed mud with a particle fineness of 60 meshes, and a mass concentration of 15%;

(2) adding citric acid to the described seaweed mud obtained in step (1) to acidify it for 2 hours, and the pH of the acidified seaweed mud is 4.0;

(3) drying the acidified seaweed mud in step (2) at a low temperature for 1.5 hours at 70° C. to make the seaweed mud into powder, and forming a water content of 8% seaweed powder;

(4) in the seaweed powder that step (3) obtains, pour water successively without seaweed powder 1cm and concentration are the sodium hydroxide solution of 35-40%, the addition of sodium hydroxide solution is 25% of the weight poured into water , Soak for 5-8 hours to form compound seaweed active enzyme liquid;

(5) filter and extract the compound seaweed active enzyme liquid obtained in step (4), namely obtain seaweed extract;

(6) dehydrating the seaweed extract obtained in step (5) by using centrifugal equipment to form seaweed organic polymer; the speed of dehydration and centrifugation is 3500r/min, the time of centrifugation is 8 minutes, and the temperature of centrifugation is 5°C.

Example 3

The present embodiment provides a seaweed organic polymer, and the preparation method of the seaweed organic polymer includes the following steps:

(1) crushing and stirring the deep-sea seaweed to form a paste-like seaweed mud with a particle fineness of 40 meshes, and a mass concentration of 20%;

(2) adding citric acid to the described seaweed mud obtained in step (1) to acidify it for 2 hours, and the pH of the acidified seaweed mud is 3.6;

(3) drying the acidified seaweed mud in step (2) at a low temperature for 1 hour at 80° C. to make the seaweed mud into powder, forming a 10% seaweed powder with a moisture content;

(4) in the seaweed powder that step (3) obtains, pour water successively without seaweed powder 1cm and the sodium hydroxide solution that concentration is 40%, the addition of sodium hydroxide solution is 30% of the weight poured into water, soaking 5 hours to form compound seaweed active enzyme liquid;

(5) filter and extract the compound seaweed active enzyme liquid obtained in step (4), namely obtain seaweed extract;

(6) dehydrating the seaweed extract obtained in step (5) using centrifugal equipment to form seaweed organic polymers; the speed of dehydration and centrifugation is 3000r/min, the time of centrifugation is 10 minutes, and the temperature of centrifugation is 4°C; The organic polymer is made into a solid state, and the liquid seaweed organic polymer is processed into a solid powder by drying equipment.

Example 4

The present embodiment provides a seaweed organic polymer, and the preparation method of the seaweed organic polymer includes the following steps:

(1) placing deep-sea seaweed in a container, crushing and stirring, forming a paste-like seaweed mud with a particle fineness of 80 meshes, and a mass concentration of 10%;

(2) adding citric acid to the described seaweed mud obtained in step (1) to acidify it for 2 hours, and the pH of the acidified seaweed mud is 4.5;

(3) drying the seaweed mud after acidification in step (2) at low temperature for 2 hours at 60° C., making the seaweed mud into powder, and forming a moisture content of 7% seaweed powder;

(4) in the seaweed powder that step (3) obtains, pour water successively without seaweed powder 2cm and the sodium hydroxide solution that concentration is 35%, the addition of sodium hydroxide solution is 20% of the weight poured into water, soaking 8 hours to form compound seaweed active enzyme liquid;

(5) filter and extract the compound seaweed active enzyme liquid obtained in step (4), namely obtain seaweed extract;

(6) dehydrating the seaweed extract obtained in step (5) using centrifugal equipment to form seaweed organic polymer; the speed of dehydration and centrifugation is 4000r/min, the time of centrifugation is 5 minutes, and the temperature of centrifugation is 6°C; The organic polymer is made into a solid state, and the liquid seaweed organic polymer is processed into a solid powder by drying equipment.

The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention. should be included within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (10)

1. a preparation method of seaweed organic polymer, is characterized in that, described method may further comprise the steps: (1) crushing and stirring the deep-sea seaweed to form a paste-like seaweed mud; (2) adding organic acid to the described seaweed mud obtained in step (1) and making it acidified; (3) drying the seaweed mud after the acidification of step (2) at a low temperature, so that the seaweed mud becomes powdery to form seaweed powder; (4) pour water and sodium hydroxide solution successively into the seaweed powder obtained in step (3), soak for 5-8 hours to form composite seaweed active enzyme liquid; (5) filter and extract the compound seaweed active enzyme liquid obtained in step (4), namely obtain seaweed extract; (6) dehydrating the seaweed extract obtained in step (5) by using a centrifugal device to form a seaweed organic polymer. 2. the preparation method of seaweed organic polymer according to claim 1, is characterized in that, in step (1), the particle fineness of described paste seaweed mud is 40-80 order, and mass concentration is 10-20 %. 3. the preparation method of seaweed organic polymer according to claim 1, is characterized in that, in step (2), described organic acid is citric acid. 4. The preparation method of seaweed organic polymer according to claim 1, is characterized in that, in step (2), the pH of described seaweed mud after acidification is 3.6-4.5. 5. the preparation method of seaweed organic polymer according to claim 1, is characterized in that, in step (3), the temperature of described low temperature drying is 60-80 ℃, and the time of described low temperature drying is 1-2 hours . 6. The preparation method of seaweed organic polymer according to claim 1, is characterized in that, in step (3), the moisture content of described seaweed powder is 7-10%. 7. the preparation method of seaweed organic polymer according to claim 1, is characterized in that, in step (4), the concentration of described sodium hydroxide solution is 35-40%, pours water in seaweed powder and does not pass seaweed powder 1-2cm, the addition amount of sodium hydroxide solution is 20-30% of the weight of the poured water. 8. The preparation method of seaweed organic polymer according to claim 1, characterized in that, in step (5), the filtration is to filter by using an 80-100 mesh sieve. 9. the preparation method of seaweed organic polymer according to claim 1, is characterized in that, in step (6), the centrifugal speed of described dehydration is 3000-4000r/min, and the time of centrifugal is 5-10 minutes, centrifugal The temperature is 4-6 ℃. 10. the preparation method of seaweed organic polymer according to claim 1 is characterized in that, in step (6), described seaweed organic polymer is liquid viscoelastic polymer, and seaweed organic polymer needs to be made into solid polymer When using drying equipment, the liquid seaweed organic polymer can be processed into solid powder.

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