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A kind of leaching repair method of molybdenum polluted soil

A technology of polluted soil and remediation method, applied in the direction of restoration of polluted soil, etc., to achieve the effect of maintaining productivity, easy operation and wide adaptability

Active Publication Date: 2016-05-11
FUJIAN AGRI & FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no environmental quality standard for soil molybdenum content in my country.
There is no report on the leaching method of molybdenum-contaminated soil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A kind of leaching method for remediating molybdenum-contaminated soil is:

[0018] 1. Take 5.00 g of a molybdenum-contaminated soil (total molybdenum content of the soil is 54.73 mg / kg) in a 50 ml centrifuge tube, add Na at a concentration of 0.10 mol / L 3 PO 4 Solution 25ml.

[0019] 2. Place the centrifuge tube in a parallel shaker at room temperature (25±3°C) at a shaking rate of 200 rpm for 1.5 hours.

[0020] 3. Place the shaken centrifuge tube in a centrifuge, centrifuge at a speed of 3000 rpm for 10 minutes, and discard the supernatant.

[0021] 4. Add 25 ml of eluent to the residual soil, shake the soil at the bottom of the centrifuge tube by hand, and then place the centrifuge tube in a parallel shaker. At room temperature (25±3°C), the shaking rate is 200 rpm, shake for 1.5 hours.

[0022] 5. Place the shaken centrifuge tube in a centrifuge, centrifuge at a rate of 3000 rpm for 10 minutes, and pour off the supernatant.

[0023] 6. Add 25 ml of eluent to...

Embodiment 2

[0027] A kind of leaching method for remediating molybdenum-contaminated soil is:

[0028] 1. Take 5.00 g of a molybdenum-contaminated soil (the total molybdenum content of the soil is 93.74 mg / kg) in a 50 ml centrifuge tube, add Na at a concentration of 0.10 mol / L 3 PO 4 Solution 25ml.

[0029] 2. Place the centrifuge tube in a parallel shaker at room temperature (25±3°C) at a shaking rate of 200 rpm for 1.5 hours.

[0030] 3. Place the shaken centrifuge tube in a centrifuge, centrifuge at a speed of 3000 rpm for 10 minutes, and discard the supernatant.

[0031] 4. Add 25 ml of eluent to the residual soil, shake the soil at the bottom of the centrifuge tube by hand, and then place the centrifuge tube in a parallel shaker. At room temperature (25±3°C), the shaking rate is 200 rpm, shake for 1.5 hours.

[0032] 5. Place the shaken centrifuge tube in a centrifuge, centrifuge at a rate of 3000 rpm for 10 minutes, and pour off the supernatant.

[0033] 6. Add 25 ml of eluen...

Embodiment 3

[0037] A kind of leaching method for remediating molybdenum-contaminated soil is:

[0038] 1. Take 5.00 g of a molybdenum-contaminated soil (total molybdenum content in the soil is 127.49 mg / kg) in a 50 ml centrifuge tube, add Na at a concentration of 0.10 mol / L 3 PO 4 Solution 25ml.

[0039] 2. Place the centrifuge tube in a parallel shaker at room temperature (25±3°C) at a shaking rate of 200 rpm for 1.5 hours.

[0040] 3. Place the shaken centrifuge tube in a centrifuge, centrifuge at a speed of 3000 rpm for 10 minutes, and discard the supernatant.

[0041] 4. Add 25 ml of eluent to the residual soil, shake the soil at the bottom of the centrifuge tube by hand, and then place the centrifuge tube in a parallel shaker. At room temperature (25±3°C), the shaking rate is 200 rpm, shake for 1.5 hours.

[0042] 5. Place the shaken centrifuge tube in a centrifuge, centrifuge at a rate of 3000 rpm for 10 minutes, and pour off the supernatant.

[0043] 6. Add 25 ml of eluent t...

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Abstract

The invention provides a molybdenum polluted soil leaching remediation method. Trisodium phosphate is adopted as an eluting agent. Not only is a part of molybdenum in soil removed, but also adverse influence on the soil fertility can be prevented, and thus the molybdenum polluted soil leaching remediation method is friendly in property, convenient in taking materials and easy to perform.

Description

technical field [0001] The invention belongs to the technical field of remediation of contaminated soil, and in particular relates to a method for leaching and remediation of molybdenum-contaminated soil. Background technique [0002] Soil pollution has become an important environmental issue that has attracted much attention due to its strong potential hazards. Among the various types of soil pollution, inorganic pollution is the most important one. The National Soil Pollution Survey Bulletin issued by the Ministry of Environmental Protection and the Ministry of Land and Resources shows that the main type of soil pollution in my country is inorganic. Soil inorganic pollution is mainly heavy metal pollution. Traditional soil heavy metal pollution refers to soil cadmium, lead, arsenic, chromium, mercury, nickel, copper, and zinc pollution. However, with the development of soil environmental investigation and the deepening of research, harmful elements other than the above h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09C1/08
Inventor 王果林会举洪良森陈炎辉谢团辉黄碧妃
Owner FUJIAN AGRI & FORESTRY UNIV
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