A kind of adsorbent for heavy metal polluted soil and its preparation method and application

A technology that pollutes soil and heavy metals. It is applied in the field of agricultural chemistry and soil science. It can solve the problems of long time-consuming, large-scale operation, time-consuming and labor-intensive bioremediation, and achieve the benefits of growth, improvement of pH, looseness and porosity. Effect

Active Publication Date: 2021-08-06
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the common heavy metals in the soil include cadmium, mercury, arsenic, lead, zinc, chromium, copper, etc. The current restoration methods are basically divided into physical methods, chemical methods and biological restoration methods. Physical methods require special instruments and operate on a large scale. , time-consuming and labor-intensive, the bioremediation method is time-consuming and costly; the biological method requires a special bacterial agent or organism, the research and development process requires a lot of manpower and material resources, and the result is also very unknown; therefore, the chemical method is used to repair polluted soil. It is an economical, practical, quick and effective method

Method used

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  • A kind of adsorbent for heavy metal polluted soil and its preparation method and application
  • A kind of adsorbent for heavy metal polluted soil and its preparation method and application
  • A kind of adsorbent for heavy metal polluted soil and its preparation method and application

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Effect test

Embodiment 1

[0059] A adsorbent for heavy metallic contamination soil, including the following raw materials: soil heavy metal adsorption granules and 20 sodium alginate - carboxymethylge glycans - sulfide composite materials;

[0060] The soil heavy metal adsorption granules are prepared according to the following steps:

[0061] 1 Crushing the foot of the mushroom and the sunflower pan to 100 ~ 200 mesh, after sieve, sequentially get the foot powder and sunflower powder, spare;

[0062] Pull the residual bone of animal processing to 80 to 150 mesh, after sieve, bone powder, spare;

[0063] 2 Mix vermiculum powder, bone powder, mushrooms, mix well, dextrin, sunflower powder and water, combined with a ballicle of 0.8 ~ 1.2cm in diameter, placed in a dry to moisture content in a ventilated environment 5 ~ 10%;

[0064] Stripe powder, bone powder, mushroom foot powder, dextrin, sunflower powder and water mass ratio 20: 10: 15: 5: 10: 50;

[0065] 3 Take the step 2 The resulting ball is covered o...

Embodiment 2

[0070] A adsorbent for heavy metal contamination soil, with a weight of the following raw materials: soil heavy metal adsorption granules 50 parts and sodium alginate - carboxymethylge glycans - 10 parts of ferrous sulfide composite materials;

[0071] The soil heavy metal adsorption granules are prepared according to the following steps:

[0072] 1 Crushing the foot of the mushroom and the sunflower pan to 100 ~ 200 mesh, after sieve, sequentially get the foot powder and sunflower powder, spare;

[0073] Pull the residual bone of animal processing to 80 to 150 mesh, after sieve, bone powder, spare;

[0074] 2 Mix vermiculum powder, bone powder, mushrooms, mix well, dextrin, sunflower powder and water, combined with a ballicle of 0.8 ~ 1.2cm in diameter, placed in a dry to moisture content in a ventilated environment 5 ~ 10%;

[0075] Stripe powder, bone powder, mushroom foot powder, dextrin, sunflower powder and water mass ratio of 30: 20: 8: 15: 60;

[0076] 3 Take the step 2 Th...

Embodiment 3

[0081] A adsorbent for heavy metallic contaminated soils, including the following raw materials: Soil Heavy metallic adsorption granules 45 parts and 14 sodium alginate - carboxymethylge glycans - sulfide composite materials;

[0082] The soil heavy metal adsorption granules are prepared according to the following steps:

[0083] 1 Crushing the foot of the mushroom and the sunflower pan to 100 ~ 200 mesh, after sieve, sequentially get the foot powder and sunflower powder, spare;

[0084] Pull the residual bone of animal processing to 80 to 150 mesh, after sieve, bone powder, spare;

[0085] 2 Mix vermiculum powder, bone powder, mushrooms, mix well, dextrin, sunflower powder and water, combined with a ballicle of 0.8 ~ 1.2cm in diameter, placed in a dry to moisture content in a ventilated environment 5 ~ 10%;

[0086] Stripe powder, bone flour, mushroom under foot powder, dextrin, sunflower powder and water mass ratio are 24: 16: 18: 6: 12: 58;

[0087] 3 Take step 2 The resulting ...

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Abstract

The invention discloses an adsorbent for heavy metal polluted soil, a preparation method thereof and a method for repairing soil by using the adsorbent, which comprises the following raw materials in parts by weight: 40-50 parts of soil heavy metal adsorption particles and sodium alginate-carboxymethyl 10-20 parts of chitosan-ferrous sulfide composite material; the adsorbent for heavy metal-contaminated soil of the present invention can effectively improve the pH of the soil, and can reach more than 95% of the adsorption capacity of various heavy metals in the soil, repairing the soil Finally, it can significantly reduce the compactness and bulk density of the soil, increase the looseness and porosity of the contaminated soil, significantly improve the air permeability and water permeability of the soil, and be more conducive to the growth of crop roots in the soil.

Description

Technical field [0001] The present invention relates to the field of agricultural chemistry and soil science and technology. Specifically, there is a adsorbent for heavy metal contamination soil and its preparation methods and use. Background technique [0002] With the development of my country's industrialization, industrial and living wastewater emissions, soil weight-free pollution caused by automobile exhaust emissions, the problem is increasingly prominent. As an agricultural big country, my country guarantees that the quality and quantity of farmland have always been our very much attention. Heavy metal contaminated soil can not only cause changes in soil, so that it is not suitable for crop growth, but also causing a bad effect on the root growth and photosynthesis of crops, making the crops or even absorbed. In recent years, heavy metals have emerged through food chains to migrate into animals and human body, so how to effectively treat heavy metal pollution soil, so tha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K17/40B09C1/08C09K101/00C09K109/00
CPCB09C1/08C09K17/40C09K2101/00C09K2109/00
Inventor 祁海平舒永李群
Owner QINGDAO UNIV OF SCI & TECH
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