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Remediation of fipronil and/or ethiprole contaminated sediments by using biochar and detection method thereof

A biochar and sediment technology, applied in the field of environmental remediation, can solve the problem of measuring the free dissolved concentration of fipronil and ethiprole, etc.

Inactive Publication Date: 2015-07-22
INST OF PLANT PROTECTION CHINESE ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no report on the determination of the free dissolved concentration of fipronil and ethiprole by POM resin passive sampling method

Method used

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  • Remediation of fipronil and/or ethiprole contaminated sediments by using biochar and detection method thereof
  • Remediation of fipronil and/or ethiprole contaminated sediments by using biochar and detection method thereof
  • Remediation of fipronil and/or ethiprole contaminated sediments by using biochar and detection method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] (1) Cut the magnolia wood into sections, put it in a closed container, put it into the muffle furnace, turn on the switch, raise the temperature to 700°C under anoxic conditions, keep it for 4 hours, take it out after cooling to room temperature, and crush it to the particle size Less than or equal to 2mm, ready for use.

[0070] (2) Add the biochar prepared by step (1) into fipronil and / or ethiprole polluted sediments, the quality of adding biochar is 1% of the sediment mass; stir and place it at 10 rpm Minutes on a shaker in the dark at room temperature for 30 days.

[0071] (3) Take 4 g of the sediment and add it to 40 mL of water, then add 0.2 g of polyoxymethylene resin; sterilize with 0.2% sodium azide solution; put the whole system into a shaker and vibrate at a constant speed of 150-200 r / min for 27 After ~30 days, take out and clean and dry the polyoxymethylene resin; put the polyoxymethylene resin in 40mL of methanol, analyze it at a speed of 150~200r / min for...

Embodiment 2

[0083] (1) Cut the magnolia wood into sections, put it in a closed container, put it into the muffle furnace, turn on the switch, raise the temperature to 700°C under anoxic conditions, keep it for 4 hours, take it out after cooling to room temperature, and crush it to the particle size Less than or equal to 4mm, ready for use.

[0084] (2) Add the biochar prepared by step (1) into fipronil and / or ethiprole polluted sediments, the quality of adding biochar is 5% of the sediment quality; stir and place at 10 rpm Minutes on a shaker in the dark at room temperature for 30 days.

[0085] (3) Take 4 g of the sediment and add it to 40 mL of water, then add 0.2 g of polyoxymethylene resin; sterilize with 0.2% sodium azide solution; put the whole system into a shaker and vibrate at a constant speed of 150-200 r / min for 27 After ~30 days, take out and clean and dry the polyoxymethylene resin; put the polyoxymethylene resin in 40mL of methanol, analyze it at a speed of 150~200r / min for...

Embodiment 3

[0091] (1) Cut the magnolia wood into sections, put it in a closed container, put it into the muffle furnace, turn on the switch, raise the temperature to 700°C under anoxic conditions, keep it for 4 hours, take it out after cooling to room temperature, and crush it to the particle size Less than or equal to 4mm, ready for use.

[0092] (2) Add the biochar prepared by step (1) into fipronil and / or ethiprole polluted sediments, the quality of adding biochar is 10% of the sediment quality; stir and place it at 10 rpm Minutes on a shaker in the dark at room temperature for 30 days.

[0093] (3) Take 4 g of the sediment and add it to 40 mL of water, then add 0.2 g of polyoxymethylene resin; sterilize with 0.2% sodium azide solution; put the whole system into a shaker and vibrate at a constant speed of 150-200 r / min for 27 After ~30 days, take out and clean and dry the polyoxymethylene resin; put the polyoxymethylene resin in 40mL of methanol, analyze it at a speed of 150~200r / min...

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Abstract

The invention relates to remediation of fipronil and / or ethiprole contaminated sediments by using biochar and a detection method thereof. The method for remediation of the fipronil and / or ethiprole contaminated sediments by the biochar comprises the steps of preparation of the biochar from michelia alba wood and remediation of the fipronil and / or ethiprole contaminated sediments. The method for determining the concentration of free-dissolved fipronil and / or ethiprole in the sediments after remediation comprises the steps of determination of the concentration of free-dissolved fipronil and / or ethiprole in the sediments after remediation by polyformaldehyde resin. Raw materials of the method are wide in sources and are easily available; the biochar prepared from the michelia alba wood has large specific surface area and strong adsorption ability; the operation flow is simple, the condition requirements are low, and the remediation method can be used for remote treatment and on-site treatment of contaminated sediments; environment risk is low, no secondary pollution exists, and the practical application value is high; and with use of the detection method, the determination result is accurate, and the operations are simple and efficient.

Description

technical field [0001] The invention relates to the field of environmental restoration, in particular to a biochar restoration of fipronil and / or ethiprole polluted sediments and a detection method thereof. Background technique [0002] Fipronil is a broad-spectrum benzopyrazole insecticide. It has high insecticidal activity against major agricultural pests such as rice borers, cruciferous vegetable diamondback moths, aphids and corn grubs. It can also be used to control houseflies, cockroaches, Termites, ants, fleas on pets, ticks on livestock, golf course pests, etc. BASF, the world's largest chemical company, claims the insecticide has been applied to more than 100 crops in 70 countries. [0003] However, fipronil has many drawbacks. First of all, fipronil is highly toxic to fish, shrimp and oysters in water, birds and bees that eat rice on land, and the main mechanism is to disrupt the nervous system by interfering with the chloride ion channel of GABA. Although many ...

Claims

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Application Information

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IPC IPC(8): B09C1/00G01N30/88
Inventor 刘新刚郑永权李莎莎董丰收徐军吴小虎
Owner INST OF PLANT PROTECTION CHINESE ACAD OF AGRI SCI
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