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A kind of green soil cd activator and preparation method thereof

An activator and soil technology, applied in chemical instruments and methods, soil conditioning materials, agriculture, etc., can solve the problems of low biodegradability, insufficient activation efficiency, and insufficient preparation methods and processes

Active Publication Date: 2021-04-20
LUDONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention mainly solves the problems of existing activators such as low biodegradability, insufficient price, insufficient material availability, insufficient preparation method and process, and insufficient activation efficiency, which restrict their universality and popularization and application. A New Approach to Resource Utilization of Enteromorpha Green Tide Waste

Method used

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  • A kind of green soil cd activator and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0012] Embodiment 1, the green soil Cd activator comprises the following components by weight: 90 parts of Enteromorpha extract; 1 part of anhydrous calcium chloride;

[0013] Preparation of Enteromorpha extract: First, wash 1 part by weight of Enteromorpha with 500 parts by weight of water for 0.5 hour, change the water and repeat washing 3 times; then mix 1 part by weight of Enteromorpha after washing and draining with 20 parts by weight of water, Put it into the pulping machine and stir it to make pulp, so as to obtain the extract of Enteromorpha enteromorpha;

[0014] Preparation of green soil Cd activator: Mix 90 parts by weight of Enteromorpha extract prepared above and 1 part by weight of anhydrous calcium chloride, stir and react at 30° C. for 1 hour, and cool to prepare the activator.

Embodiment 2

[0015] Embodiment 2, green soil Cd activator comprises the following components by weight: 95 parts of enteromorpha extract; 5 parts of anhydrous calcium chloride;

[0016] Preparation of Enteromorpha extract: First, wash 1 part by weight of Enteromorpha with 500 parts by weight of water for 0.5 hour, change the water and repeat washing 4 times; then mix 1 part by weight of Enteromorpha after washing and draining with 50 parts by weight of water, Put it into the pulping machine and stir it to make pulp, so as to obtain the extract of Enteromorpha enteromorpha;

[0017] Preparation of green soil Cd activator: Mix 95 parts by weight of Enteromorpha extract prepared above and 5 parts by weight of anhydrous calcium chloride, stir and react at 50° C. for 1.5 hours, and cool to prepare the activator.

Embodiment 3

[0018] Embodiment 3, the green soil Cd activator comprises the following components by weight: 99 parts of Enteromorpha extract; 10 parts of anhydrous calcium chloride;

[0019] Preparation of Enteromorpha extract: First, wash 1 part by weight of Enteromorpha with 500 parts by weight of water for 0.5 hour, change the water and repeat washing 5 times; then mix 1 part by weight of Enteromorpha after washing and draining with 80 parts by weight of water, Put it into the pulping machine and stir it to make pulp, so as to obtain the extract of Enteromorpha enteromorpha;

[0020] Preparation of green soil Cd activator: mix 99 parts by weight of Enteromorpha extract prepared above and 10 parts by weight of anhydrous calcium chloride, stir and react at 80° C. for 2 hours, and cool to prepare the activator.

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Abstract

The invention discloses a green soil Cd activator and a preparation method thereof, belonging to the technical field of heavy metal polluted soil remediation; it is characterized in that the activator is prepared by mixed reaction of enteromorpha extract and anhydrous calcium chloride; the preparation method It is: firstly, the washed Enteromorpha and water are pulverized and pulped at a weight ratio of 1:20-80 to obtain an extract, and then the Enteromorpha extract and anhydrous calcium chloride are mixed in a weight ratio of 90-99:1-10 Mixing, stirring and reacting at 30-80°C for 1-2 hours, and cooling to obtain the activator; the raw materials used in the present invention are cheap and easy to obtain, which opens up a new way of resource utilization of Enteromorpha green tide waste; the preparation method and process are simple and easy Operation: The obtained activator is cost-effective, can not only activate soil Cd efficiently, but also improve soil quality, and has the characteristics of green environmental protection and good application prospects.

Description

Technical field: [0001] The invention relates to the technical field of remediation and treatment of heavy metal polluted soil, in particular to a green soil Cd activator and a preparation method thereof. Background technique: [0002] Currently, heavy metal pollution is a global problem, among which Cd pollution is one of the focuses. The 2014 "National Soil Pollution Survey Bulletin" showed that 7% of soil Cd exceeded the standard; among the 1672 soil points in 70 investigated mining areas, 33.4% exceeded the standard, and Cd is one of the main pollutants. Studies have shown that the annual output of grains polluted by heavy metals such as Cd in my country reaches 1.2×10 7 t, the direct economic loss exceeds 20 billion yuan. This is a huge threat to ecosystems and human health. Therefore, how to carry out high-Cd soil remediation in a green and efficient manner is a practical problem that needs to be solved urgently. [0003] At present, the basic principles of Cd and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K17/40
CPCC09K17/40
Inventor 董志成张丽娜夏传海张振华何洋单良毛立
Owner LUDONG UNIVERSITY