Method for enhancing copper pollution tolerance of reeds by using gas molecule NO

A gas molecule and copper pollution technology, applied in chemical instruments and methods, water pollutants, botanical equipment and methods, etc., can solve the problems of poor plant tolerance and low absorption efficiency, and achieve environmental protection, resource conservation, and overcoming The effect of low absorption efficiency

Inactive Publication Date: 2021-06-18
LIAONING UNIVERSITY
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

At present, the use of reeds to remediate copper pollution has the bottleneck of poor plant tolerance and low absorption efficiency.

Method used

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  • Method for enhancing copper pollution tolerance of reeds by using gas molecule NO

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Embodiment 1

[0024] (1) A method of utilizing gaseous molecule NO to strengthen reed tolerance to copper pollution, the method is as follows:

[0025] 1) Select fresh reed seedlings, put them in water and cultivate them for 15 days, then screen out reeds with consistent growth, 6 plants as a group, plant them in a 3000ml beaker filled with 2500ml improved Hoagland nutrient solution, and place the beakers randomly Put them in a greenhouse with the same suitable conditions for further cultivation, replace the nutrient solution every two days and place them randomly again to reduce the error caused by the difference in the environment. Continue to cultivate for 7 days, and use it for hydroponic experiment after the plant grows stably;

[0026] 2) plant reed seedlings in copper-polluted water bodies with a copper concentration of 5-10 mg / L, add 0.05-0.2 mmol / L of exogenous NO donor nitroprusside, and grow and cultivate for 21 days;

[0027] 3) Remove the grown and cultivated reeds from the po...

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Abstract

The invention discloses a method for enhancing copper pollution tolerance of reeds by using gas molecules NO. The method comprises the following steps: 1) planting reeds in the copper-polluted water body, adding an exogenous NO donor sodium nitroprusside, and carrying out growth culture; and (2) moving the grown and cultured reeds away from the polluted water body, and repeatedly planting and operating, so that the copper polluted water body is expected to meet the requirements of the class II water environment quality standard of surface water in China. According to the method, the copper pollution tolerance of the reeds is enhanced by applying exogenous NO, the common bottlenecks of poor plant tolerance and low absorption efficiency in the past are overcome, the copper tolerance of the reeds is improved, the normal growth of the reeds is kept, the water quality can be purified, and the concentration of heavy metal copper in a water body environment is obviously reduced. Moreover, heavy metals enriched in the plants can be recycled, so that the method has good economic benefits and social benefits and is beneficial to large-scale popularization and application.

Description

technical field [0001] The invention relates to the technical field of copper-polluted water tolerance restoration, in particular to a method for strengthening reed tolerance to copper pollution by using gas molecule NO. Background technique [0002] At present, with the acceleration of industrialization, the discharge of heavy metal wastewater is huge, and heavy metal pollution is becoming more and more serious. Water heavy metal pollution has become one of the main environmental problems today. Heavy metals in water mainly come from key polluting industries such as electroplating, mining and metallurgy, electronics manufacturing, and thermal power generation. Heavy metal pollutants have high stability and cannot be degraded in the water body. When they accumulate in the water body to a certain limit, they will cause serious harm to the water body-aquatic plant-aquatic animal system, and may directly or indirectly through the food chain affect human health. Therefore, hea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N59/00A01N59/24A01P21/00A01G13/00C02F3/32C02F101/20
CPCA01G13/00A01N59/00A01N59/24C02F3/327C02F2101/20C02F2301/08
Inventor 吴洁婷胡佳宁包红旭于畅高添杨雪洁杨雨婷
Owner LIAONING UNIVERSITY
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