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A kind of coating that reduces enteromorpha fouling and application method thereof

A technology of enteromorpha and fouling, which is applied in the field of coatings to reduce the fouling of enteromorpha, can solve the problems of strong toxicity of chemical reagents, death of non-target organisms, ecological imbalance and other problems, and achieve no residual risk, easy degradation, and no ecological damage The effect of imbalance

Active Publication Date: 2022-04-26
ZHEJIANG UNIV
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  • Description
  • Claims
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Problems solved by technology

Although this method has an immediate effect, due to the strong toxicity of the chemical reagents injected, it often leads to the death of non-target organisms in the sea area, causing secondary pollution, and even ecological imbalance.

Method used

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  • A kind of coating that reduces enteromorpha fouling and application method thereof
  • A kind of coating that reduces enteromorpha fouling and application method thereof

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Embodiment Construction

[0015] Below by embodiment the present invention will be further elaborated.

[0016] Prepare 10L enriched seawater medium (f / 2, salinity 30) in a water tank, put adult Enteromorpha (vegetative strain, sporophyte), at 20°C, light quantum intensity 50μmol / (m 2 s), cultured under aeration with a light-dark ratio of 12:12.

[0017] Using commercially available 1:1 addition type polydimethylsiloxane (PDMS) as the matrix of the coating, adding luteolin with a mass fraction of 2.5% to the entire coating, and fully stirring until completely dissolved to obtain an antifouling coating. Before the matrix solidifies, apply the paint evenly on the nylon seedling rope as soon as possible, and hang it in the shade for 2 days. After the paint solidifies, the seedling rope can be used.

[0018] According to the above paint preparation method, three kinds of paints containing different flavonoid allelochemicals were prepared, namely: luteolin, chrysin and quercetin, all with a mass fraction o...

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Abstract

The invention discloses a paint for reducing enteromorpha fouling and an application method thereof. The paint matrix is ​​dimethylsiloxane, and the effective antifouling substance in the paint is luteolin with a mass fraction of 2.5%. The paint is applied to the nylon seedling ropes of laver culture rafts to reduce the fouling of Enteromorpha on the nylon ropes, thereby reducing the biomass of Enteromorpha entering the sea. The luteolin used in the present invention widely exists in various plants such as peanuts, celery, dandelions, green peppers, etc., and has the characteristics of large land reserves, easy extraction, mild nature, and not easy to cause secondary pollution. The invention can be applied to the pollution control of enteromorpha and the early prevention and control of green tide in laver breeding areas. The coating prepared by the invention can effectively reduce the fouling of the enteromorpha on the nylon rope, thereby reducing the biomass of the enteromorpha entering the sea, thereby alleviating the outbreak of the green tide in the Yellow Sea every year.

Description

technical field [0001] The invention belongs to the fields of control of harmful algal blooms of large seaweeds and prevention and control of marine biological fouling, and in particular relates to a coating for reducing the fouling of enteromorpha and an application method thereof. Background technique [0002] Since 2007, in the spring and summer of each year, the phenomenon of explosive reproduction of Enteromorpha prolifera (Ulva prolifera) has appeared in the Yellow Sea of ​​my country. The green tide of Enteromorpha in the Yellow Sea has lasted for 13 years, causing huge economic losses; among them, in 2008, hundreds of millions of RMB were spent to clean up the Enteromorpha covering the Olympic sailing venue. After investigation, it was found that these Enteromorpha came from the laver breeding area in the mudflats of northern Jiangsu. The rafts for laver cultivation are mainly made of bamboo poles and nylon seedling ropes, and are periodically submerged by seawater ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/16C09D183/04A01G13/00A01G33/02
CPCC09D5/1625C09D183/04A01G13/00A01G33/00C08K5/0008
Inventor 唐韬肖溪
Owner ZHEJIANG UNIV
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