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Red tide algae algicide based on persulfate oxidation modified nano-cellulose and application of red tide algae algicide

A technology of persulfate oxidation and nanocellulose, which is applied in the fields of oxidized water/sewage treatment, chemical instruments and methods, special treatment targets, etc., can solve the problems of slow effect, easy rebound, poor biocompatibility, etc.

Active Publication Date: 2021-09-07
天津如米基业新材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of this invention is to provide a kind of application of red tide algae algaecide based on persulfate oxidation modified nano-cellulose, which can effectively improve the existing red tide algae algae removal Poor biocompatibility, slow effect, easy rebound, and easy to cause secondary pollution

Method used

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  • Red tide algae algicide based on persulfate oxidation modified nano-cellulose and application of red tide algae algicide
  • Red tide algae algicide based on persulfate oxidation modified nano-cellulose and application of red tide algae algicide
  • Red tide algae algicide based on persulfate oxidation modified nano-cellulose and application of red tide algae algicide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Experiment 1: Mix 9% cellulose nanocrystals, 83% potassium monopersulfate, 3% polyethylene glycol, and 5% potassium nitrate in 1L seawater, and ultrasonicate in a 200w ultrasonic device Modified for 15 minutes, as algaecide solution 1;

[0031] Control 2: Mix 83% potassium peroxomonosulfate, 3% polyethylene glycol, and 5% potassium nitrate in 1L seawater, and ultrasonically modify it in a 200w ultrasonic device for 15 minutes, as an algaecide Solution 2;

[0032] Control 3: Mix cellulose nanocrystals with a mass content of 9%, 3% polyethylene glycol, and 5% potassium nitrate in 1L seawater, and ultrasonically modify them in a 200w ultrasonic device for 15 minutes, as an algaecide solution 3;

[0033] Blank 4: Mix 3% polyethylene glycol and 5% potassium nitrate in 1L of seawater, and ultrasonically modify it in a 200w ultrasonic device for 15 minutes, as algaecide solution 4.

[0034] Take 4 parts of the red tide water body with Phaeocystis globosa growing, each 9L, a...

Embodiment 2

[0037] Mix positively modified cellulose nanocrystals with a mass content of 25%, 69% sodium persulfate, 2% carrageenan, and 4% sodium sulfate in 1L seawater, and ultrasonically modify them in a 200w ultrasonic device for 15 minutes , to prepare a red tide algae algaecide solution.

[0038] Get 6 parts of the red tide water bodies with Heterocurvium akashiwo growing, each 9L, spray the above-mentioned red tide algae algicide solution therein respectively, in the algae liquid, the initial concentration biodensity of Heterocurvium akashiwo is 10 8 cells L -1 , the concentrations of red tide algae algaecide in the algae liquid are 0, 0.1g L -1 , 0.2g L -1 , 0.3g L -1 , 0.4g L -1 , 0.5g L -1 , After standing for 6 hours, observe the change of the density of H. akashiwo in the algae liquid.

[0039] The algae removal efficiency of different concentrations of algicide is as follows: image 3 As shown, the results show that when the red tide algaecide concentration of 0.3g L ...

Embodiment 3

[0041] Mix carboxylated modified cellulose nanocrystals with a mass content of 45%, 50% ammonium persulfate, 2% alginic acid, and 3% sodium gluconate in 1L seawater, and ultrasonically modify them in a 200w ultrasonic device After 15 minutes, the red tide algae algaecide solution was prepared.

[0042] Get 6 parts of the red tide water body that grows Prorocentrum donghaiense, each 9L, spray above-mentioned red tide algae algaecide solution wherein respectively, the initial concentration biodensity of algae liquid Prorocentrum donghaiense is 10 7 cells L -1 , the concentration of red tide algae algaecide in the algae liquid is 0, 0.03g L -1 , 0.06g L -1 , 0.09g L -1 , 0.12g L -1 , 0.15g L -1 , After standing for 7 hours, observe the change of density of P.

[0043] The algae removal efficiency of different algicides is as follows: Figure 4 As shown, the results show that when the red tide algaecide concentration of 0.09g L -1 and above, for mob densities up to 10 7 c...

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Abstract

The invention discloses a red-tide algae algicide based on persulfate oxidation modified nano cellulose and an application thereof. The red-tide algae algicide is prepared from nano cellulose, persulfate, a dispersing agent and auxiliary materials, the dosage of the nano cellulose is 9-78 wt%, the dosage of the persulfate is 15-83 wt%, the dosage of the dispersing agent is 2-5 wt%, and the dosage of the auxiliary materials is 3-5wt%. The algaecide is mixed with seawater or fresh water to prepare a uniform solution, the solution is subjected to ultrasonic modification to obtain modified nanocellulose, the modified nanocellulose is sprayed on the surface of a red tide water body, and the red tide can be effectively removed after natural sedimentation for a certain time. The algaecide is efficient, green and sustainable and can inhibit the activity of red tide algae, and algae-carrying cells are settled in the flocculation process; through an inactivation-apoptosis-sedimentation algae removal mechanism, the efficiency of treating the red tide water body is remarkably improved; and the nanocellulose can be directly applied to the natural water body, has no influence on the natural water body environment and organisms, and is biodegradable.

Description

technical field [0001] The invention belongs to the field of red tide control and treatment, and in particular relates to a red tide algae algaecide based on persulfate oxidation modified nano-cellulose and its application. Background technique [0002] Red tide is an ecological abnormal phenomenon in which some microalgae, protozoa or bacteria explosively proliferate or accumulate to a certain level under certain environmental conditions, causing discoloration of water bodies or causing harm to other organisms in the ocean. In marine systems, microalgae not only provide food for other aquatic organisms at the bottom of the food chain, but also play an important role in the global carbon cycle. They absorb atmospheric carbon dioxide through photosynthesis, thereby sequestering carbon. However, under certain conditions, certain species can proliferate explosively and gather or produce toxins to form harmful algal blooms. Because such algal blooms usually cause the water to tu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72C02F1/56C02F1/52
CPCC02F1/72C02F1/56C02F1/5236C02F2303/20
Inventor 苏荣欣丁国杰车明达黄仁亮
Owner 天津如米基业新材料有限公司
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