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Method for repairing thorium (IV)-polluted water body by employing facultative marine fungi living body

A marine fungus and water body technology, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc., to achieve low cost, easy management, and no secondary pollution

Inactive Publication Date: 2014-11-26
NANHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

(2) Most of the microorganisms that remediate thorium(IV) polluted water come from land, but there are few reports on microorganisms from marine sources (including mangrove sources)

Method used

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  • Method for repairing thorium (IV)-polluted water body by employing facultative marine fungi living body
  • Method for repairing thorium (IV)-polluted water body by employing facultative marine fungi living body
  • Method for repairing thorium (IV)-polluted water body by employing facultative marine fungi living body

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] To the 7 groups with pH values ​​of 4.0, 5.0, 6.0, 7.0, 8.0, 9.0, and 10.0, the amount of thorium (Ⅳ) contained was 50 mg L -1 3.0 g of fungal active mycelia were added to 50 mL of water, and the content of thorium (IV) in the water was detected for 8 hours. figure 1 . It can be seen from the figure that when the pH value is 4-8, the adsorption rate of thorium (IV) by fungi exceeds 60%, and when the pH value is 5.0, the removal rate and adsorption capacity of thorium (IV) reach the maximum. 79.24% and 6.96 mg g respectively -1 , the removal effect is better.

Embodiment 2

[0033] To 8 groups of pH 5.0 containing thorium (IV) amount is 50 mg L -1 3.0 g of fungal active mycelia were put into 50 mL of water, and at 0.25, 1, 2, 4, 8, 10, 13, and 24 h, the content of thorium (Ⅳ) in the water, and the adsorption of thorium (Ⅳ) The relationship between the rate and adsorption capacity with time is shown in the appendix figure 2 . When the feeding time is 8 h, the removal rate of thorium (IV) is the highest, close to 80%, and the removal effect is better.

Embodiment 3

[0035] To 5 groups of pH 5.0 containing different initial concentrations of thorium (Ⅳ) (30, 40, 45, 50, 60 mg L -1 ) into 50 mL of water, and 3.0 g of fungal active mycelia were put into the water body. After 8 hours, the content of thorium (IV) in the water was detected, and the adsorption rate and adsorption capacity of thorium (IV) changed with the initial concentration of thorium (IV). see attachment image 3 . When the initial concentration of thorium(IV) is 50 mg L -1 When , the removal rate of thorium (Ⅳ) is the largest, close to 80%, and the removal effect is better.

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Abstract

The invention relates to a method for repairing a thorium (IV)-polluted water body by employing a facultative marine fungi living body. The method comprises the following steps: adding a facultative marine fungi (i) Fusariumsp.#ZZF51 living body serving as a material to a polluted water body containing thorium (IV); fishing out the facultative marine fungi living body; and carrying out centralized treatment after a period of time, wherein the fungi material has strong salt tolerance and radioresistance, and strong thorium (IV) enriching ability; the removal rate can be up to 70-80% 2-8 hours after the facultative marine fungi living body is added; and fungal active mycelium floats on the surface of the water body, and can be easily fished out and subjected to centralized treatment. The method has the economic and technical advantages of being simple and convenient to operate and manage, low in cost, high in remediation efficiency, friendly to environment, free of secondary pollution and the like, and is suitable for after-treatment of various thorium-polluted water bodies from thorium mines and hydrometallurgical plants, as well as various spent ore and tailing leaching liquid.

Description

technical field [0001] The invention relates to the technical field of restoration of thorium-polluted water bodies, and is a kind of anti-radiation mangrove endogenous fungus Fusarium sp. #ZZF51 (a typical facultative marine fungus, which can produce and sporulate in freshwater, terrestrial and marine environments) is a complete set of technologies for rapid removal of thorium pollution in water bodies. Background technique [0002] Thorium is a radioactive element that is used to make advanced lenses and special alloys for increased strength. Thorium can also be used as a substitute for uranium, and nuclear fuels that are safer than uranium can be developed. Therefore, thorium nuclear fuel is regarded as a research direction for future nuclear energy development. Recently, with the continuous development of the global atomic energy industry, the types and quantities of radioactive wastewater produced in the process of thorium mining, smelting and decommissioning nuclear f...

Claims

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Application Information

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IPC IPC(8): C02F3/34G21F9/04
Inventor 谭倪杨司坤陈芳颜雪明贾晓鹤张稳廖森侯丹
Owner NANHUA UNIV
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