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Method for adsorbing heavy metal ions in environment by utilizing macroalgae

A technology of heavy metal ions and seaweed, applied in chemical instruments and methods, adsorption water/sewage treatment, seawater treatment, etc., can solve the problems of slow desedimentation rate of heavy metal ions, complicated operation, secondary pollution, etc., and achieve low cost and high distribution Broad, long-growing effects

Inactive Publication Date: 2015-02-25
INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The deficiencies of flocculation include the following points. First, the operation is complicated, and the pH of the water body needs to be adjusted. In addition to adding precipitants to the water body, other flocculants need to be added and the amount is large; second, as the pH of the water body changes, heavy metals Ions will be precipitated from the sludge, causing secondary pollution and need to be stabilized; the third is that the desedimentation rate of heavy metal ions is very slow

Method used

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  • Method for adsorbing heavy metal ions in environment by utilizing macroalgae
  • Method for adsorbing heavy metal ions in environment by utilizing macroalgae
  • Method for adsorbing heavy metal ions in environment by utilizing macroalgae

Examples

Experimental program
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Effect test

Embodiment 1

[0037] (1) Prepare 200ml of freshwater culture solution with cadmium ion concentration of 0, 10, 50, 100, and 150μmol / L (fresh water is to use tap water to expose to the sun for 3 hours to remove chloride ions), and then place them in 250ml Erlenmeyer flasks ,stand-by.

[0038] (2) Add 4g of fresh Enteromorpha per bottle.

[0039] (3) After each sample was treated at room temperature for 1d, 2d, and 3d, the photosynthetic activity (Dual-PAM) of the algae was measured (the photosynthetic activity was measured at room temperature, and the results are shown in Figure 1-5 ), and respectively take 2ml of the culture solution after the above treatment, and measure the content of cadmium ions (results in Figure 6 ).

[0040] (4) Calculate the adsorption rate, calculate the adsorption rate method, the adsorption rate (%)=100*(C 0 -C e ), (C 0 is the original cadmium ion content, C e is the remaining cadmium ion content).

[0041] by the above Figure 1-5 It can be seen that ...

Embodiment 2

[0049] (1) Prepare 200ml of semi-seawater (half-seawater refers to a certain amount of seawater mixed with an equal amount of distilled water) culture solution with cadmium ion concentrations of 0, 10, 50, 100, and 150 μmol / L, and then place them in 250ml of In the triangular flask, set aside.

[0050] (2) Add 4g of fresh Enteromorpha per bottle.

[0051] (3) Each sample was treated at room temperature for 1d, 2d, 3d, 4d, 5d, 6d, 7d, 8d, and 9d to measure the photosynthetic activity (Dual-PAM) of the algae (the photosynthetic activity was measured at room temperature, and the results were See Figure 7-11 ), and respectively take 2ml of the culture solution after the above treatment, and measure the remaining cadmium ion content (results see Figure 12 ).

[0052] (4) Calculate the adsorption rate, adsorption rate (%)=100*(C 0 -C e ), (C 0 is the original cadmium ion content, C e is the remaining cadmium ion content)

[0053] by the above Figure 6-11 It can be seen t...

Embodiment 3

[0061] (1) Prepare 200ml of seawater culture solution with cadmium ion concentration of 0, 10, 50, 100, and 150μmol / L respectively, and then place them in (250ml) Erlenmeyer flasks for use.

[0062] (2) Add 4g of fresh Enteromorpha per bottle.

[0063] (3) Each sample was treated at room temperature for 1d, 2d, 3d, 4d, and 5d to measure the photosynthetic activity of the algae (Dual-PAM). The photosynthetic activity was measured at room temperature, and the results are shown in Figure 13-17 , and take 2ml of the above-mentioned treated culture solution respectively, and measure the remaining cadmium ion content (results see Figure 18 ).

[0064] (4) Calculate the adsorption rate, adsorption rate (%)=100*(C 0 -C e ), C 0 is the original cadmium ion content, C e is the remaining cadmium ion content)

[0065] by the above Figure 13-17 It can be seen that 0d is the time for processing materials, 1-5d is the process of processing, 6-8d is the recovery process, and the rec...

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Abstract

The invention relates to a method for adsorbing heavy metals, and concretely relates to a method for adsorbing heavy metal ions in environment by utilizing macroalgae. The method comprises: pouring macroalgae into a to-be determined sample, and utilizing cytomembrane of macroalgae and a nutrient-element ion channel on the cytomembrane to enable heavy metal ions to be adhered to cytomembrane and enter macroalgae cells through the ion channel, so as to further remove heavy metal ions in the to-be determined sample. By employing macroalgae for adsorbing the heavy metal ions, the adsorption scope is 30-90% and the highest adsorption rate is 90% or more.

Description

technical field [0001] The invention relates to a method for adsorbing heavy metals, in particular to a method for using macroalgae to adsorb heavy metal ions in the environment. Background technique [0002] Heavy metal pollution is environmental pollution caused by heavy metals and their compounds. It is mainly caused by human factors such as mining and exhaust gas. Because of human activities, the heavy metal content in the environment has increased, resulting in a decline in environmental quality. The harm of heavy metals to the environment mainly depends on the concentration and form of heavy metals in the environment. Heavy metal pollution is mainly manifested in the pollution of water bodies by heavy metals, and the pollution of soil and air by some heavy metals. The difference between heavy metal pollution and other pollution is that other compound pollution can be purified or eliminated through the physical, chemical and biological purification of nature itself, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/28C02F1/62B09C1/00
CPCC02F1/286B09C1/00C02F1/62C02F2101/20C02F2103/08
Inventor 王广策苏海霞段晨雪
Owner INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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