A method for preparing soil conditioner with modified attapulgite as main raw material
A soil conditioner and main raw material technology, applied in soil conditioning materials, chemical instruments and methods, organic fertilizers, etc., can solve the problems of incomplete removal of harmful microorganisms, poor passivation effect of heavy metals, and increased investment costs, and achieve passivation. Long-term stable effect, abundant reserves, good effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0036] Such as figure 2 A kind of preparation method of modified attapulgite of the present invention shown, it comprises the following steps:
[0037] (a) Place the attapulgite in a container, and then add 1 to 4 mol / l hydrochloric acid into the container, wherein the ratio of hydrochloric acid: attapulgite is 3:1 to 5:1 (ml:g);
[0038] (b) Place the above-mentioned attapulgite soaked in hydrochloric acid in a microwave field for microwave activation for 15-30 minutes, and the microwave power is 30-50w;
[0039] (c) Put the acidified and microwave-activated attapulgite into a rinsing device, and rinse with water until the pH of the washing water is 6-7;
[0040] (d) Suction filter the above-mentioned attapulgite that has been washed under the condition of vacuum degree of 0.05-0.08MPa;
[0041] (e) drying the attapulgite obtained by the above-mentioned suction filtration at 100-200° C., grinding and passing through a 100-300 mesh sieve to obtain a modified attapulgite.
...
Embodiment 1
[0057] Prepare the modified attapulgite, the specific steps are:
[0058] (a) Take 20g of attapulgite powder in a beaker, add 60mL-1mol / l hydrochloric acid;
[0059] (b) Place the attapulgite soaked in hydrochloric acid in a microwave field for microwave activation for 15 minutes, and the microwave power is 30w;
[0060] (c) Put the acidified and microwave-activated attapulgite into a rinsing device, and rinse with water until the washing water pH=7;
[0061] (d) Suction filter the above-mentioned attapulgite that has been washed under the condition of vacuum degree of 0.05MPa;
[0062] (e) The attapulgite obtained by the above suction filtration was dried at 100° C., ground and passed through a 100-mesh sieve to obtain a microwave acidified modified attapulgite.
[0063] Take the polluted soil and test the heavy metal content in the polluted soil: Cd-16.2mg / kg, Cu-191.3mg / kg, Hg-3.6mg / kg, Cr-340.7mg / kg, Zn-386.5mg / kg, As-56.9mg / kg, Pb-412.2mg / kg.
[0064] Mix the modifie...
Embodiment 2
[0074] Prepare the modified attapulgite, the specific steps are:
[0075] (a) Take 60g of attapulgite powder in a beaker, add 180mL-2mol / l hydrochloric acid;
[0076] (b) Place the attapulgite soaked in hydrochloric acid in a microwave field for microwave activation for 20 minutes, and the microwave power is 40w;
[0077] (c) Put the acidified and microwave-activated attapulgite into a rinsing device, and rinse with water until the washing water pH=6;
[0078] (d) Suction filter the above-mentioned attapulgite that has been washed under the condition of vacuum degree of 0.06MPa;
[0079] (e) The attapulgite obtained by the suction filtration was dried at 150°C, ground and passed through a 150-mesh sieve to obtain a modified attapulgite.
[0080] Take the polluted soil, after testing the heavy metal content in the soil: Cd-16.2mg / kg, Cu-191.3mg / kg, Hg-3.6mg / kg, Cr-340.7mg / kg, Zn-386.5mg / kg, As-56.9mg / kg, Pb-412.2mg / kg.
[0081] Mix the modified attapulgite prepared above w...
PUM
| Property | Measurement | Unit |
|---|---|---|
| quality score | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More