Preparation and application method for foamed ceramic soil remediation agent for clearing away heavy metal contamination of dry land

A technology of soil remediation agent and foam ceramics, which is applied in the field of soil remediation to achieve the effects of chemical corrosion resistance mechanical strength, high porosity, and large specific surface area

Active Publication Date: 2017-04-05
江西南大硒谷农业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These two patents all use the role of biochar to adsorb heavy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A method for preparing and using a ceramic foam soil remediation agent for removing heavy metal pollution in dry land, the steps of the preparation method are as follows:

[0019] Step 1. Biomass raw material preparation: pulverize the sycamore leaves and sieve them to obtain 100-200-mesh sieve leaf powder for later use;

[0020] Step 2. Preparation of bone powder: crush the clean bovine bones and sieve to obtain 80-100 mesh bone powder for later use;

[0021] Step 3. Preparation of foam ceramic embryo body: Take 100 parts of clay minerals, 5 parts of prepared sycamore leaf powder, 3 parts of alkali metal carbonate or bicarbonate, 10 parts of bovine bone powder in step 2, 90 parts of clear water, and pass through pellets Machine kneading into a spherical ceramic body with a diameter of 1cm, and dry in the shade in a ventilated environment until the moisture content of the ceramic body is lower than 16%;

[0022] Step 4. Electric furnace sintering: Take 1500g of the air...

Embodiment 2

[0025] A method for preparing and using a ceramic foam soil remediation agent for removing heavy metal pollution in dry land, the steps of the preparation method are as follows:

[0026] Step 1. Biomass raw material preparation: crush bamboo leaves and sieve to obtain leaf powder with 100-200-mesh sieve for later use;

[0027] Step 2. Preparation of bone powder: crush clean sheep bones, sieve, and obtain 80-100-mesh bone powder for later use;

[0028] Step 3. Preparation of foamed ceramic embryo body: Take 100 parts of clay minerals, 10 parts of prepared bamboo leaf powder, 10 parts of alkali metal carbonate or bicarbonate, 20 parts of sheep bone powder in step 2, 100 parts of clear water, and pass through pellets Machine kneading into a spherical ceramic body with a diameter of 3cm, and dry in the shade in a ventilated environment until the moisture content of the ceramic body is lower than 15%;

[0029]Step 4. Electric furnace sintering: Take 2000g of the air-dried ceramic ...

Embodiment 3

[0032] A method for preparing and using a ceramic foam soil remediation agent for removing heavy metal pollution in dry land, the steps of the preparation method are as follows:

[0033] Step 1. Biomass raw material preparation: crush pine leaves and sieve to obtain 100-200-mesh sieve leaf powder for later use;

[0034] Step 2, bone powder preparation: crush the clean pig bones, sieve, and obtain 80-100 mesh bone powder for later use;

[0035] Step 3. Preparation of foam ceramic embryo body: Take 100 parts of clay minerals, 7 parts of prepared pine leaf powder, 7 parts of alkali metal carbonate or bicarbonate, 15 parts of pig bone powder in step 2, 95 parts of clear water, and pass through pellets Machine kneading into a spherical ceramic body with a diameter of 2cm, and dry in the shade in a ventilated environment until the moisture content of the ceramic body is lower than 18%;

[0036] Step 4. Electric furnace sintering: take 1700g of the air-dried ceramic body in step 3, ...

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Abstract

The invention discloses a preparation and application method for a foamed ceramic soil remediation agent for clearing away heavy metal contamination of dry land. According to the method, biomass raw materials are used as a pore-forming agent, hydroxyapatite crystals [Ca10(PO4)6(OH)2] and amorphous calcium hydrophosphate (CaHPO4) in bone powder are used as raw materials for adsorbing heavy metals, and the preparation and application technology for the foamed ceramic soil remediation agent for clearing away heavy metal contamination of the dry land are provided. The preparation and application method are simple in process, low in cost and free of pollution, huge biomass resources are fully used, the heavy metals contained in soil are absorbed effectively, foamed ceramic is adopted, and the beneficial effects of the high porosity, the large specific surface area, the good absorption effect and the like of the foamed ceramic are adopted; and the adopted natural bone powder contains abundant Ca and P which are the human essential constant mineral elements, the heavy metals in soil are remedied, and the soil composition is improved.

Description

technical field [0001] The invention belongs to the technical field of soil remediation, and in particular relates to a method for preparing and using a foam ceramic soil remediation agent for removing heavy metal pollution in dry land. Background technique [0002] In the past 50 years, about 22,000 tons of Cr, 9.39×10 5 t Cu, 7.83×10 5 t of Pb and 1.35×10 6 t of Zn is emitted into the global environment, most of which enter the soil, causing soil heavy metal pollution. With the continuous development of my country's industry and urbanization, the problem of soil heavy metal pollution caused by industrial and domestic wastewater discharge, sewage irrigation, and vehicle exhaust emissions has become increasingly serious. Heavy metal pollution can not only cause changes in soil composition, structure, and function, but also inhibit crop root growth and photosynthesis, resulting in crop yield reduction or even failure. More importantly, heavy metals may also migrate to ani...

Claims

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Application Information

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IPC IPC(8): B09C1/00C09K17/04C04B33/13C04B33/132C04B38/06C04B38/02C05G3/04C09K101/00C05G3/80
CPCB09C1/00C04B33/131C04B33/132C04B38/009C04B2235/442C04B2235/447C04B2235/94C04B2235/95C05G3/80C09K17/04C09K2101/00C04B38/0675C04B38/02C04B38/0074Y02P40/60
Inventor 张斌刘玉环徐丰圆王允圃刘童莹阮榕生艾力
Owner 江西南大硒谷农业科技有限公司
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