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Heavy metal passivation material of nano zero-valent iron composite attapulgite as well as preparation method and application of heavy metal passivation material

A technology of nano-zero-valent iron and attapulgite, applied in the direction of chemical instruments and methods, applications, soil conditioning materials, etc., to achieve the effects of reducing bioavailability, enhancing passivation performance, and maintaining stability

Inactive Publication Date: 2020-04-17
甘肃瀚兴环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, in the prior art, there is no report about the preparation of heavy metal passivation materials by nano-zero-valent iron composite attapulgite. For this reason, the inventor provides a heavy metal passivation material and its preparation method of nano-zero-valent iron composite attapulgite. and applications

Method used

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  • Heavy metal passivation material of nano zero-valent iron composite attapulgite as well as preparation method and application of heavy metal passivation material

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Embodiment 1

[0025] A heavy metal passivation material of nano zero-valent iron composite attapulgite. The heavy metal passivation material includes the following weight percentages: 70% attapulgite and 30% nano-iron.

Embodiment 2

[0027] A heavy metal passivation material of nano zero-valent iron composite attapulgite. The heavy metal passivation material includes the following weight percentages: 72% attapulgite and 28% nano iron.

Embodiment 3

[0029] A heavy metal passivation material of nano zero-valent iron composite attapulgite. The heavy metal passivation material includes the following weight percentages: 70% attapulgite and 30% nano-iron.

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Abstract

The invention discloses a heavy metal passivation material of nano zero-valent iron composite attapulgite, wherein the heavy metal passivation material comprises the following substances in percentageby weight: 70-80% of attapulgite and 20-30% of nano iron; and meanwhile, the invention discloses a preparation method and application of the heavy metal passivation material. The prepared heavy metalpassivation material can change the chemical form of heavy metals in soil by adsorbing, fixing and passivating the heavy metals in the soil, so that the ecological toxicity of the heavy metals is greatly reduced, the bioavailability of the heavy metals is reduced, and a good effect of repairing heavy metal pollution of the soil is achieved.

Description

Technical field [0001] The invention relates to the technical field of heavy metal pollution restoration, in particular to a heavy metal passivation material of nano zero-valent iron composite attapulgite, and a preparation method and application thereof. Background technique [0002] With the rapid growth of industry and agriculture, the problem of soil heavy metal pollution has become more and more serious, and the problem of soil heavy metal pollution facing my country has become increasingly prominent. According to reports from the State Environmental Protection Administration and the Ministry of Land and Resources, the overall soil environment in the country is not optimistic. Soil pollution in some areas is serious, the soil environmental quality of arable land is worrying, and the soil environmental problems of abandoned industrial and mining lands are prominent. The total soil environmental problem nationwide is 16.1%. Mainly without models, the number of points exceeding...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/08B09C1/08
CPCB09C1/08C09K17/08
Inventor 任珺陶玲刘伟
Owner 甘肃瀚兴环保科技有限公司
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