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Granules for repairing poly brominated diphenyl ether contaminated soil and application for same

A polybrominated diphenyl ether and polluted soil technology, which is applied in the field of remediation of polybrominated diphenyl ether polluted soil granules, and can solve the problems of low degradation efficiency and low microbial survival rate.

Inactive Publication Date: 2014-05-21
ZHEJIANG FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent uses environmentally friendly materials to prepare PBDE-contaminated soil granules, which overcomes the problems of low microbial survival rate and low degradation efficiency when directly adding microorganisms to the soil.

Method used

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  • Granules for repairing poly brominated diphenyl ether contaminated soil and application for same
  • Granules for repairing poly brominated diphenyl ether contaminated soil and application for same
  • Granules for repairing poly brominated diphenyl ether contaminated soil and application for same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Add 3 grams of sodium alginate and 10 grams of bran powder to 100 mL of fermentation broth with a mycelial concentration of 20 mg dry weight / mL and mix well. In 2% (w / v) calcium chloride solution, the formed granule balls were washed with sterile water and set aside to obtain the optimal granule dosage form of 20mg / mL white rot fungal mycelium and 10mg / mL bran. The remediation test was carried out in the polluted soil to determine its remediation effect.

Embodiment 2

[0029] Add 3 grams of sodium alginate and 10 grams of bran powder to 100 mL of fermentation broth with a mycelial concentration of 20 mg dry weight / mL and mix well. In 2% (w / v) calcium chloride solution, the formed granule balls were washed with sterile water and set aside to obtain the optimal granule dosage form of 20mg / mL white rot fungal mycelium and 10mg / mL bran. Carry out remediation tests in contaminated soil to measure the changes in the number and activity of microorganisms.

Embodiment 3

[0031]Add 3 grams of sodium alginate and 10 grams of bran powder to 100 mL of water and mix well. After stirring thoroughly for 2.5 hours, use a pipette to add the mixed liquid dropwise into 1 L of calcium chloride solution with a concentration of 2% (w / v) to form The granules were washed with sterile water and set aside to obtain the optimal granule formulation without white rot fungal mycelium and 10mg / mL bran. Applied in polluted soil to measure its adsorption effect.

[0032] The present invention will be further described by corresponding tests below.

[0033] 1. Materials and methods

[0034] Test material

[0035] The granules obtained in embodiment 1

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Abstract

The invention discloses granules for repairing poly brominated diphenyl ether contaminated soil and an application for the same, which belong to the technical field of environmental protection. The granules are characterized by being prepared by the method comprises the following steps of: adding crushed bran and sodium alginate in fermentation broth with a white-rot fungal hyphae concentration of 10-30 mg / ml respectively, and uniformly mixing to prepare zymocyte mixed solution, then stirring for 0.5-0.8 hours, then dripping the zymocyte mixed solution in calcium chloride solution with a concentration of 2-3% by a pipette, and cleaning the prepared formed granule balls with sterile water, and airing to obtain the granules for repairing poly brominated diphenyl ether contaminated soil. The granules for repairing poly brominated diphenyl ether contaminated soil and the application for the same above are good in effect on repair for poly brominated diphenyl ether contaminated soil, capable of being applied to repair for farmland and site contamination, good in repair effect, low in production cost, safe to environment, and free from secondary pollution.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, in particular to a granule for repairing polybrominated diphenyl ether polluted soil and its application. Background technique [0002] The English name of polybrominated diphenyl ethers is PolyBrominatedDiphenylEthers (referred to as PBDEs), and there are 209 kinds of homologues such as tetrabromodiphenyl ether, pentabromine, hexabromine, octabromine, and decabromine. Its commercial polybrominated diphenyl ethers are a group of diphenyl ether mixtures with different numbers of bromine atoms, so they are collectively called polybrominated diphenyl ethers. Polybrominated diphenyl ethers (PBDEs) are a class of global organic pollutants that have attracted much attention due to their persistence, toxicity and potential bioaccumulation. PBDEs are a class of global organic pollutants that widely exist in the environment. Because of its environmental persistence, long-distance transmi...

Claims

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Application Information

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IPC IPC(8): C09K17/00B09C1/10
Inventor 张昕杜敬霆童森淼林海萍吴小梅
Owner ZHEJIANG FORESTRY UNIVERSITY
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