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Slow release algae removal microcapsule and preparation method thereof

A slow-release algae-killing microcapsule and microcapsule technology, applied in botany equipment and methods, herbicides and algicides, chemicals for biological control, etc. The problem of low utilization rate of disease, to achieve the effect of reducing the application amount and prolonging the effective period

Active Publication Date: 2019-05-21
ZHEJIANG FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of low utilization rate, short validity period, and environmental pollution for the treatment of torreya chlorophyll with chemical pesticides that need to be solved urgently, the present invention proposes a slow-release algae-killing microcapsule method, which has high efficiency and low residue characteristics. The duration of algicidal effect, the reduction of the application amount of highly toxic algicides, and the efficient use of pesticides and environmental protection are of great significance

Method used

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  • Slow release algae removal microcapsule and preparation method thereof
  • Slow release algae removal microcapsule and preparation method thereof
  • Slow release algae removal microcapsule and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] (1) Preparation of biomass-based molecular materials

[0053] (1.1) Mix 1 mol of pyromellitic anhydride, 25 mol of urea and 0.5 mol of ferric chloride hexahydrate, then add 1.2 mol of catalyst ammonium molybdate, add the above reactants into a mortar, mix well, and grind thoroughly. Put it in a three-necked flask and react at 180°C for 0.5h, and then raise the temperature to 250°C to continue the reaction for 5h after the reactants are dissolved. The obtained black solid product was soaked in 6 mol / L hydrochloric acid for 12 hours, filtered, and the filter cake was stirred in 85° C. distilled water for 35 minutes and then filtered, and the stirring and filtering operation was repeated until no solid precipitated out of the filtrate. After drying the filter residue, octaaminophthalocyanine iron is prepared.

[0054] (1.2) Dissolve 1g of cellulose powder in 8g of absolute ethanol, add 5.0g of sodium hydroxide solution with a mass concentration of 20%, then add 1.2mL of m...

Embodiment 2

[0064] (1) Preparation of biomass-based molecular materials

[0065] (1.1) Mix 1 mol of pyromellitic anhydride, 26 mol of urea and 0.6 mol of ferric chloride hexahydrate, then add 1.3 mol of catalyst ammonium molybdate, add the above reactants into a mortar, mix well, and grind thoroughly. Put it in a three-necked flask and react at 200°C for 0.7h, and then raise the temperature to 240°C to continue the reaction for 5h after the reactants are dissolved. The obtained black solid product was soaked in 7 mol / L hydrochloric acid for 13 hours, filtered, and the filter cake was stirred in distilled water at 90°C for 40 minutes before filtering, and the stirring and filtering operation was repeated until no solid precipitated out of the filtrate. After drying the filter residue, octaaminophthalocyanine iron is prepared.

[0066] (1.2) Dissolve 1g of cellulose powder in 9g of absolute ethanol, add 5.5g of sodium hydroxide solution with a mass concentration of 25%, then add 1.3mL of m...

Embodiment 3

[0076] (1) Preparation of biomass-based molecular materials

[0077] (1.1) Mix 1 mol of pyromellitic anhydride, 24 mol of urea and 0.4 mol of ferric chloride hexahydrate, then add 1.1 mol of catalyst ammonium molybdate, add the above reactants into a mortar, mix well, and grind thoroughly. Place it in a three-necked flask and react at 160°C for 1 hour. After the reactants are dissolved, raise the temperature to 260°C and continue the reaction for 4 hours. The obtained black solid product was soaked in 5 mol / L hydrochloric acid for 12 hours, filtered, and the filter cake was stirred in 85° C. distilled water for 35 minutes and then filtered, and the stirring and filtering operation was repeated until no solid precipitated out of the filtrate. After drying the filter residue, octaaminophthalocyanine iron is prepared.

[0078] (1.2) Dissolve 1g of cellulose powder in 9g of absolute ethanol, add 5.0g of sodium hydroxide solution with a mass concentration of 23%, then add 1.0mL of...

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Abstract

The invention relates to the field of algae removal materials and solves the urgent problems that chemical pesticides for treating torreya grandis green algae disease is low in utilization ratio and short in effective period, pollutes the environment and the like. The invention provides a slow release algae removal microcapsule which takes a biomass-based molecular material as a capsule shell anda compound algae removal agent synthesized by lime sulphur and micro / nano Ce doped ZnO as a capsule core. The slow release algae removal microcapsule has the characteristics of high efficiency and lowresidues and has very important meaning in prolonging the lasting period of the algae removal action, reducing the application amount of the highly toxic algae removal agent, utilizing pesticides efficiently and protecting the environment.

Description

technical field [0001] The invention relates to the field of algae-killing materials, in particular to a slow-release algae-killing microcapsule and a preparation method thereof. Background technique [0002] Torreya is a characteristic forest industry in Zhejiang Province. In the past 10 years, it has developed into the most closely related industry for forest farmers to increase their income and get rich. It has an important strategic position in economic forests and has a unique role in the economic and social development of Zhejiang. In recent years, the frequency of torreya disease outbreaks has increased year by year, the scope has continued to expand, and economic losses have continued to increase. The disease has become the main bottleneck restricting the healthy development of the torreya industry, and the torreya green algae is the most serious hazard in the primary forest. It is urgent to actively develop the torreya. Research on key technologies for major disease...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/28A01N59/02A01N59/06A01N59/16A01N43/90A01P13/02A01P3/00A01P1/00
Inventor 郭明王珏王瑞郑轶璐胡莹露胡智燕
Owner ZHEJIANG FORESTRY UNIVERSITY
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