Green biodegradable soil heavy metal cadmium activating agent and preparation method thereof

A biodegradable, heavy metal technology, applied in the field of heavy metal cadmium-contaminated soil treatment, to achieve the effects of easy degradation, improved absorption rate, and enhanced chelation ability

Active Publication Date: 2018-05-18
中科绿洲(北京)生态工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, the added tetrasodium glutamic acid diacetate exhibited low con...

Method used

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  • Green biodegradable soil heavy metal cadmium activating agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] S1: Take 17kg of sodium alginate, 14kg of α-(2-methyl-1-oxo-2-propyl)-ω-hydroxyl-polyoxyethylene, and 7kg of polyoxyethylene-polyoxypropylene block copolymer, put them in Mix uniformly in 50kg of water, wherein the reaction temperature is 135°C, the reaction time is 70min, and the molecular weight of the polyoxyethylene polyoxypropylene block copolymer is 2500;

[0029] S2: Lower the temperature of the reaction system to 115°C, add 4 kg of calcium chloride to the mixture obtained in S1, stir for 23 minutes, and adjust the pH value of the reaction system to 7;

[0030] S3: Add 17.5 kg of tetrasodium glutamic acid diacetate, 20.2 kg of citric acid, and 22.4 kg of potassium chloride into S2 to obtain a mixture, mix uniformly for 40 minutes, and discharge to prepare a green biodegradable soil heavy metal cadmium activator.

Embodiment 2

[0032] S1: Take 12kg of sodium alginate, 10kg of α-(2-methyl-1-oxo-2-propyl)-ω-hydroxyl-polyoxyethylene, and 5kg of polyoxyethylene-polyoxypropylene block copolymer, put them in Mix uniformly in 50kg of water, wherein the reaction temperature is 115°C, the reaction time is 80min, and the molecular weight of the polyoxyethylene polyoxypropylene block copolymer is 2000;

[0033] S2: Lower the temperature of the reaction system to 115°C, add 5 kg of calcium chloride to the mixture obtained in S1, and after stirring for 20 minutes, adjust the pH value of the reaction system to 7.5;

[0034] S3: Add 3.5 kg of tetrasodium glutamic acid diacetate, 19.2 kg of citric acid, and 7.5 kg of potassium chloride into S2 to obtain a mixture, mix uniformly for 50 minutes, and discharge to prepare a green biodegradable soil heavy metal cadmium activator.

Embodiment 3

[0036] S1: Take 22kg of sodium alginate, 10kg of α-(2-methyl-1-oxo-2-propyl)-ω-hydroxy-polyoxyethylene, and 5kg of polyoxyethylene-polyoxypropylene block copolymer, put them into Mix uniformly in 50kg of water, wherein the reaction temperature is 140°C, the reaction time is 60min, and the molecular weight of the polyoxyethylene polyoxypropylene block copolymer is 3000;

[0037] S2: Lower the temperature of the reaction system to 119° C., add 5 kg of calcium chloride to the mixture obtained in S1, stir for 20 minutes, and adjust the pH value of the reaction system to 7;

[0038] S3: Add 31.5 kg of tetrasodium glutamic acid diacetate, 19.2 kg of citric acid, and 7.5 kg of potassium chloride into S2 to obtain a mixture, mix uniformly for 50 minutes, and discharge to prepare a green biodegradable soil heavy metal cadmium activator.

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Abstract

The invention relates to a green biodegradable soil heavy metal cadmium activating agent. The green biodegradable soil heavy metal cadmium activating agent comprises, by weight, 3.5-31.5 parts of tetrasodium glutamate diacetate, 19.2-21.2 parts of citric acid, 7.5%-37.3 parts of potassium chloride, 10-18 parts of alpha-(2-methyl-1-oxo-2-propenyl)-omega-hydroxy-poly(oxy-2-ethanediyl), 5-9 parts ofa polyoxyethylene-polyoxypropylene block copolymer, 12-22 parts of sodium alga acid and 3-5 parts of calcium chloride. The green biodegradable soil heavy metal cadmium activating agent can promote sedum plumbizincicola to absorb heavy metal cadmium within the growth cycle of the sedum plumbizincicola, and the absorption rate of the heavy metal cadmium can be increased.

Description

technical field [0001] The invention relates to the technical field of heavy metal cadmium polluted soil treatment, more specifically, it relates to a green biodegradable soil heavy metal cadmium activator and a preparation method thereof. Background technique [0002] Soil is one of the main resources that human beings depend on for survival, and it is also the main carrier of ecological cycle. In recent years, due to problems such as agricultural sewage irrigation and chemical industry leakage, a large amount of heavy metals have been released into the soil environment, causing great harm to food safety, human health, and animal and plant ecosystems. Therefore, the cleanliness and safe utilization of polluted soil has become an urgent problem to be solved. [0003] In particular, the heavy metal cadmium in the soil, as a toxic heavy metal, has become more and more polluting to crops, and the polluted area of ​​farmland is expanding day by day, which has aroused widespread...

Claims

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Application Information

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IPC IPC(8): B09C1/10C09K17/40C09K101/00
CPCB09C1/105B09C2101/00C09K17/40C09K2101/00
Inventor 黄岩龙腾
Owner 中科绿洲(北京)生态工程技术有限公司
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