阅读说明：本技术 一种海藻有机聚合物的制备方法 (Preparation method of seaweed organic polymer ) 是由 斯蒂芬·Y·周 刘国选 于 2019-11-15 设计创作，主要内容包括：本发明涉及一种海藻有机聚合物的制备方法,所述海藻有机聚合物以深海海藻为主要原料,经酸化后低温干燥,再经碱化、过滤和脱水等工艺,即得所述海藻有机聚合物。本发明的有益效果：本发明得到的海藻有机聚合物,具有催化氧化和絮凝沉降功能,可与有机酸、过氧化氢、硫酸或其他酸性溶液同时使用,实现氧化还原,可应用于重金属污染土壤,固体废物和污水处理。(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.)

1. A method for preparing an organic seaweed polymer, comprising the steps of:

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

(2) adding organic acid into the seaweed mud obtained in the step (1) to acidify the seaweed mud;

(3) drying the seaweed mud acidified in the step (2) at low temperature to enable the seaweed mud to be powdery and form seaweed powder;

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

(5) filtering and extracting the composite seaweed active enzyme liquid obtained in the step (4) to obtain a seaweed extract;

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

2. The method for preparing seaweed organic polymer according to claim 1, wherein in the step (1), the particle fineness of the paste-like seaweed paste is 40-80 mesh and the mass concentration is 10-20%.

3. The method for preparing organic seaweed polymer according to claim 1, wherein in the step (2), the organic acid is citric acid.

4. The method for preparing seaweed organic polymers according to claim 1, wherein the pH of the seaweed mud after acidification in step (2) is 3.6-4.5.

5. The method for preparing seaweed organic polymers according to claim 1, wherein the low-temperature drying temperature in step (3) is 60-80 ℃ and the low-temperature drying time is 1-2 hours.

6. The method for preparing seaweed organic polymers according to claim 1, wherein the moisture content of the seaweed powder in step (3) is 7-10%.

7. The method for preparing seaweed organic polymers according to claim 1, wherein in the step (4), the concentration of the sodium hydroxide solution is 35-40%, the seaweed powder is poured into water to submerge the seaweed powder by 1-2cm, and the addition amount of the sodium hydroxide solution is 20-30% of the weight of the poured water.

8. The method for preparing seaweed organic polymers according to claim 1, wherein in the step (5), the filtration is carried out by using a 80-100 mesh sieve.

9. The method as claimed in claim 1, wherein the centrifugation speed of the dehydration step (6) is 3000-4000r/min, the centrifugation time is 5-10 min, and the centrifugation temperature is 4-6 ℃.

10. The method of claim 1, wherein in step (6), the seaweed organic polymer is a liquid viscoelastic polymer, and when the seaweed organic polymer is to be made into a solid polymer, the liquid seaweed organic polymer is processed into a solid powder by using a drying device.

Technical Field

The invention belongs to the technical field of environment-friendly materials, and particularly relates to a preparation method of a seaweed organic polymer.

Background

Algae, which is a general term for marine algae such as kelp, laver, undaria pinnatifida, gelidium amansii and the like, is grown in the sea and is a cryptogamic plant in the plant kingdom, and includes several different types of organisms that produce energy through photosynthesis. They are generally regarded as simple plants, characterized mainly by: has no vascular bundle tissue and has no differentiation phenomenon of true root, stem and leaf; no flowering, no fruit and no seed; the protection tissue without specialization of reproductive organs usually produces spores or gametes directly from a single cell; and no embryo formation.

The seaweed itself has the function of absorbing various inorganic elements in the seawater. Seaweed has been used as a raw material for preparing products such as seaweed gel, sodium alginate and the like, and is widely applied by people. Foreign scientists successfully extract various organic matters from deep sea algae by a scientific method through years of research and produce related products. Such organic polymers have been used in many fields based on their adsorption and adhesion functions.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides a preparation method of an organic seaweed polymer, and the prepared organic seaweed polymer is an organic seaweed polymer with comprehensive catalytic oxidation and flocculation sedimentation functions, and the main component of the organic seaweed polymer is an organic product.

The invention aims to provide a preparation method of an organic seaweed polymer.

A method for preparing an algal organic polymer according to an embodiment of the present invention comprises the steps of:

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

(2) adding organic acid into the seaweed mud obtained in the step (1) to acidify the seaweed mud;

(3) drying the seaweed mud acidified in the step (2) at low temperature to enable the seaweed mud to be powdery and form seaweed powder;

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

(5) filtering and extracting the composite seaweed active enzyme liquid obtained in the step (4) to obtain a seaweed extract;

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

The active substances in the seaweed include: fucoidin for protecting gastric mucosa, improving immunity, and preventing and resisting tumor; alginate can adsorb heavy metal, clear intestine, remove toxic substance, reduce weight, release controlled drug, keep moisture, repair, and resist radiation; brown algae polyphenols, antibacterial, antioxidant, anticoagulant, antitumor, chemical defense, etc.; fucoxanthin, promoting lipolysis, reducing weight, resisting oxidation, and resisting tumor; mannitol, a natural diuretic, reduces intracranial pressure, intraocular pressure; laminarin, inhibiting transaminase activity, reducing cholesterol, and softening blood vessel; polyunsaturated fatty acid is used for preventing and treating cardiovascular and cerebrovascular diseases, and is necessary for brain and visual development of children.

The method for preparing an algal organic polymer according to an embodiment of the present invention, wherein, in the step (1), the particle fineness of the paste-like algal mud is 40-80 mesh.

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

The method for preparing organic polymers of seaweeds according to a specific embodiment of the present invention, wherein, in the step (2), the organic acid is citric acid.

The method for preparing an organic polymer of seaweed according to an embodiment of the present invention, wherein the acidification time of citric acid is 2 hours.

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

The method for preparing the seaweed organic polymer according to the embodiment of the present invention, wherein the low-temperature drying is performed at 60 to 80 ℃ for 1 to 2 hours in the step (3).

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

According to the preparation method of the seaweed organic polymer, in the step (4), the concentration of the sodium hydroxide solution is 35-40%, the seaweed powder is poured into water to be 1-2cm higher than the seaweed powder, and the addition amount of the sodium hydroxide solution is 20-30% of the weight of the poured water.

The method for preparing the seaweed organic polymer according to the embodiment of the invention, wherein, in the step (6), the speed of the dehydration centrifugation is 3000-4000r/min, the time of the centrifugation is 5-10 minutes, and the temperature of the centrifugation is 4-6 ℃.

According to the preparation method of the seaweed organic polymer of the embodiment of the invention, further, in the 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, the liquid seaweed organic polymer is processed into a solid powder by using drying equipment. The dehydration process in the prior art usually adopts a low-temperature drying method, but the method has high energy consumption and more active substances are lost.

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

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

(1) the seaweed organic polymer obtained by the invention mainly 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;

(2) the seaweed organic polymer obtained by the invention is used independently, is applied to sewage treatment, does not need to be added with other chemical agents for flocculation and sedimentation, has the effect of flocculation and sedimentation, overcomes the defects of a large amount of sludge, can control the limit value of the reaction and the reaction rate, and reduces the subsequent solid waste treatment cost;

(3) the seaweed organic polymer obtained by the invention can treat soil, cannot damage soil, cannot cause secondary pollution to soil, does not increase the capacity proportion of the treated soil, saves the subsequent treatment cost, and can catalyze organic acid to reduce hexavalent chromium; in particular, the treatment effect of the heavy metal polluted soil remediation and the treatment effect of soil hardening or mineralization caused by long-term use and enrichment of pesticide and fertilizer are better.

Drawings

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

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.

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

(1) placing deep sea algae in a container, crushing and stirring to form paste-like algae mud;

(2) adding organic acid into the seaweed mud obtained in the step (1) to acidify the seaweed mud;

(3) drying the seaweed mud acidified in the step (2) at low temperature to enable the seaweed mud to be powdery and form seaweed powder;

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

(5) filtering and extracting the composite seaweed active enzyme liquid obtained in the step (4) to obtain a seaweed extract;

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