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Environment-friendly soil remediation agent and preparation method and use method thereof

A soil remediation agent and green technology are applied in the field of soil remediation to achieve the effects of improving soil enzyme activity, promoting plant growth, and simple and convenient preparation method and process.

Active Publication Date: 2019-01-25
YULIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the shortcomings of the above-mentioned prior art, the object of the present invention is to provide a green soil remediation agent and its preparation method and use method. The raw materials of the preparation method are easy to obtain and the operation is simple; the soil remediation agent can repair the current situation of soil pollution on the one hand. , On the one hand, it can improve soil nutrients, and at the same time, it can be recycled, and will not cause side effects on the soil. It has the characteristics of green, high efficiency, low cost, and no safety hazards.

Method used

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  • Environment-friendly soil remediation agent and preparation method and use method thereof
  • Environment-friendly soil remediation agent and preparation method and use method thereof
  • Environment-friendly soil remediation agent and preparation method and use method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Sampling:

[0030] Humic acid was purchased from the market, and the wind-blown sandy soil was taken from the Shenfu coal mine area; the nutrient solution consisted of 100mg L -1 K H 2 PO 4 , 450 mg L - 1 KNO 3 , 500 mg L -1 MgSO 4 , 1000 mg L -1 Ca(NO 3 ) 2 4H 2 O and deionized water.

[0031] Desert dominant plants can choose Artemisia annua, Camel thorn, etc.

[0032] Nanomagnetic Fe 3 o 4 Homemade, Magnetic Fe 3 o 4 / MgAl-LDH was synthesized by co-precipitation method, and all required drugs were analytically pure. Methods as below:

[0033] First synthesize Fe 3 o 4 Nanoparticles, 2.0g FeCl 3 ·6H 2 O was dissolved in 20 mL of ethylene glycol solvent, and 6 mL of N was added under magnetic stirring. 2 h 4 ·H 2 O (80 wt%) and 3.0 g NaOH. The mixture was then sealed in a 50 mL polytetrafluoroethylene-lined stainless steel autoclave and heated at 90 °C for 10 h. Then cool to room temperature, wash the resulting black powder with deionized ...

Embodiment 2

[0053] (1) Humic acid was purchased from the market, and the wind-blown sandy soil was taken from the Shenfu coal mining area; the nutrient solution consisted of 100mg L -1 K H 2 PO 4 , 450mgL -1 KNO 3 , 500 mg L -1 MgSO 4 , 1000 mg L -1 Ca(NO 3 ) 2 4H 2 O and deionized water. Nanomagnetic Fe 3 o 4 Homemade, Magnetic Fe 3 o 4 / MgAl-LDH was synthesized by co-precipitation method, and all required drugs were analytically pure. Methods as below:

[0054] Synthetic Magnetic Fe 3 o 4 / MgAl-LDH: synthesize Fe first 3 o 4 Nanoparticles, 2.0g FeCl 3 ·6H 2 O was dissolved in 20 mL of ethylene glycol solvent, and 6 mL of N was added under magnetic stirring. 2 h 4 ·H 2 O (80 wt%) and 3.0 g NaOH. The mixture was then sealed in a 50 mL polytetrafluoroethylene-lined stainless steel autoclave and heated at 90 °C for 10 h. Then cool to room temperature, wash the resulting black powder with deionized water three times, and then vacuum-dry at 55±5°C to obtain Fe 3 o 4...

Embodiment 3

[0075] (1) Humic acid was purchased from the market, and the wind-blown sandy soil was taken from the Shenfu coal mining area; the nutrient solution consisted of 100mg L -1 K H 2 PO 4 , 450mgL -1 KNO 3 , 500 mg L -1 MgSO 4 , 1000 mg L -1 Ca(NO 3 ) 2 4H 2 O and deionized water. Nanomagnetic Fe 3 o 4 Homemade, Magnetic Fe 3 o 4 The synthesis of / MgAl-LDH adopts the co-precipitation method, and the required drugs are all analytically pure. The method is as follows:

[0076] Synthetic Magnetic Fe 3 o 4 / MgAl-LDH: synthesize Fe first 3 o 4 Nanoparticles, 2.0g FeCl 3 ·6H 2 O was dissolved in 20 mL of ethylene glycol solvent, and 6 mL of N was added under magnetic stirring. 2 h 4 ·H 2 O (80 wt%) and 3.0 g NaOH. The mixture was then sealed in a 50 mL polytetrafluoroethylene-lined stainless steel autoclave and heated at 90 °C for 10 h. Then cool to room temperature, wash the resulting black powder with deionized water three times, and then vacuum-dry at 55±5°C t...

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Abstract

The invention discloses an environment-friendly soil remediation agent and preparation method and use method thereof. The environment-friendly soil remediation agent is prepared through reacting of modified humic acid and magnetic Fe2O4 / MgAl-LDH; on one hand, magnetic Fe2O4 / MgAl-LDH carries humic acid containing nutrients, the structure and composition of soil are improved, and plant growth is promoted; on the other hand, composition magnetic Fe2O4 / MgAl-LDH and humic acid can mutually stimulate active groups under the action of root system microorganisms, the soil enzyme activity is improved,meanwhile, the active functional groups and soil heavy metal generate complex easily, and the bio-availability of the heavy metal is reduced. According to the method, adopted raw materials are cheapcompounds easy to obtain, the preparation method and process are very easy and convenient, on one hand, the obtained remediation agent can provide nutrients necessary for metabolism of plants, and onthe other hand, heavy metal pollutants can bepassivated. The plants growing healthily and fast can stabilize and improve aeolian sandy soil in return, and finally the aims of remediating the aeolian sandy soil and greening the environment are achieved.

Description

technical field [0001] The invention belongs to the field of soil restoration, and relates to a green soil restoration agent, a preparation method and a use method thereof. Background technique [0002] The northern Shaanxi mining area is highly rich in mineral resources and relatively scarce in water resources. At the same time, long-term drought, strong winds, and short-term, irregular heavy rainfall have resulted in extremely severe wind erosion and desertification of the soil in this area, and the ecology is extremely fragile. In recent years, with the construction of energy and chemical bases in full swing, a large number of toxic and harmful pollutants have been discharged into the environment, and the area of ​​polluted soil has expanded year by year. The ecological security problems caused by land degradation and soil pollution have become increasingly prominent, and it is imminent to strengthen the research on soil restoration in this area. [0003] At present, soi...

Claims

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Application Information

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IPC IPC(8): C09K17/40B09C1/08A01B79/02
CPCA01B79/02B09C1/08C09K17/40
Inventor 相玉琳相玉秀焦玉荣张智芳谢国民贾文博杨向超
Owner YULIN UNIV
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