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Preparation and application of heavy metal polluted soil conditioner

A technology of soil improver and heavy metal, applied in the direction of application, soil conditioning materials, cobalt compounds, etc., can solve problems affecting human health, etc., and achieve the effect of enhanced degradation performance and convenient specific surface area

Active Publication Date: 2022-05-24
湖南省水天需现代农业科技集团有限公司
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  • Summary
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among the many soil pollutants, heavy metal ion pollution is one of the main pollution sources, which are difficult to be decomposed by microorganisms and easy to accumulate in animals and plants, seriously affecting the development of society and human health.

Method used

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  • Preparation and application of heavy metal polluted soil conditioner

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] (1) Dissolve 0.1mol of copper nitrate, 0.1mol of sodium tungstate, 0.07mol of sodium tartrate, 0.2mol of urea in deionization, stir for a certain period of time and mix uniformly, then, transfer it into the hydrothermal reactor , hydrothermally reacted at 180 °C for 12 h to obtain porous spherical CuWO 4 ;

[0016] (2) The porous spherical CuWO 4 Dissolve in 100ml of deionized water, then add 0.01mol of cobalt nitrate, 0.02mol of ferric nitrate, 18mg of polyvinylpyrrolidone, transfer the mixed solution to an autoclave, conduct a microwave hydrothermal reaction, the reaction temperature is 160 degrees Celsius, and the reaction time is 12h, the reaction power is 150w, and CuWO is obtained 4 -CoFe 2 O 4 composite material, in which nano-CoFe 2 O 4 grown on porous spherical CuWO 4 in the pores.

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Abstract

The heavy metal polluted soil conditioner prepared by the invention is formed by compounding CuWO4-CoFe2O4, porous spherical CuWO4 is prepared by hydrothermal preparation, physical adsorption of heavy metal ions is greatly facilitated due to a relatively high specific surface area and a rich and developed pore structure, and through microwave hydrothermal reaction, polyvinylpyrrolidone is combined as a crystal control agent, so that the heavy metal polluted soil conditioner is prepared. The nanometer CoFe2O4 is uniformly combined with the pores of the CuWO4, and the nanometer CoFe2O4 and the CuWO4 synergistically enhance the degradation performance of heavy metals in the soil.

Description

technical field [0001] The invention belongs to the field of environmental protection, and in particular relates to a soil conditioner and a preparation method thereof. Background technique [0002] With the rapid development of the economy, soil pollution is becoming more and more serious, and the treatment of polluted soil is also one of the important tasks of environmental management. Among the many soil pollutants, heavy metal ion pollution is one of the main pollution sources. It is difficult to be decomposed by microorganisms and easy to accumulate in animals and plants, which seriously affects the development of society and human health. [0003] At present, many researchers have explored solutions to soil heavy metal pollution. CN113101959A discloses a graphite-like carbon nitride composite material for soil remediation and its preparation method and application. The composite material includes the following raw materials: titanium dioxide material, graphene materi...

Claims

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Application Information

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IPC IPC(8): C01G41/00C01G51/00C09K17/02
CPCC01G41/00C01G51/00C09K17/02C01P2004/03Y02W10/37
Inventor 奥格博多李丽娟
Owner 湖南省水天需现代农业科技集团有限公司
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