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Normal temperature heavy metal stabilizer and method for using normal temperature heavy metal stabilizer for stabilizing heavy metals in soil

A heavy metal stabilizer, heavy metal technology, applied in soil conditioning materials, chemical instruments and methods, applications, etc., can solve the problems of secondary soil pollution, poor acid resistance, large volume of solidified bodies, etc., and achieve the effect of benefiting soil ecology

Inactive Publication Date: 2017-02-15
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention: Aiming at the problems that occur during the preparation and use of traditional soil heavy metal curing agents, the heavy metal ions are easy to decompose, the acid resistance is poor, the volume of the solidified body is large, and it is easy to cause secondary pollution to the soil. A normal temperature heavy metal stabilizer and the method of using it to stabilize heavy metals in soil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0020]Add it dropwise into the mixer at a rate of 3mL / min, continue stirring and mixing for 3h, and stop heating; wait for the material in the mixer to cool down to room temperature naturally, separate the precipitate with a magnet, wash the precipitate 4 times with deionized water, and then use Wash with absolute ethanol 4 times, then transfer the precipitate into a vacuum freeze-drying box, and freeze-dry at 3°C ​​for 11 hours to obtain a normal temperature heavy metal stabilizer; weigh 150 g of the normal temperature heavy metal stabilizer obtained above, and pour it into a container containing 1.5 In a beaker of L deionized water, the beaker was then transferred to an ultrasonic oscillator, ultrasonically treated at 150W for 9 minutes, and then sprayed to 1.5m through a watering can. 2 On the soil surface polluted by heavy metals, cover the soil surface with a layer of 2mm thick yellow sand, after 6 days of sun exposure, water 1.5L biogas liquid, and then cover it with plas...

example 3

[0022] Weigh 200g of cellulose and 160g of chitosan in sequence, pour them into a ball mill, add ball milling beads according to the ball-to-material ratio of 20:1, adjust the revolution speed to 320r / min, and the rotation speed to 600r / min, alternating forward and reverse every 45min Run, collect the ball mill, put it in a vacuum drying oven, and store it at 80°C for 6 hours to obtain a mixed powder; weigh 10g of the above-mentioned mixed powder, pour it into a container containing 120mL of 1-butyl-3-methyl chloride Put imidazole in the beaker, and then transfer the beaker to the digital display speed measurement and constant temperature magnetic stirrer, start the stirrer, set the speed to 600r / min, heat up to 100°C, stir at constant temperature for 15min, then add 10g nanometer trioxide Iron, continue to stir and mix for 45 minutes; after the stirring is completed, pour the material in the beaker into a centrifuge, and centrifuge and degas it at 1400r / min for 20 minutes to o...

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PUM

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Abstract

The invention discloses a normal temperature heavy metal stabilizer and a method for using the normal temperature heavy metal stabilizer for stabilizing heavy metals in soil, and belongs to the field of heavy metal stabilizer synthesis. Firstly, after ball milling fining of cellulose and chitosan, the cellulose and the chitosan are evenly mixed, then dispersed in 1-butyl-3-methyl-imidazolium chloride, then mixed by stirring with nano-Fe3O4, then centrifuged for deaeration, then added dropwise in to a liquid mixture of vacuum pump oil, Twain 80 and the like for magnetic separating to obtain the normal temperature heavy metal stabilizer, the normal temperature heavy metal stabilizer is mixed with deionized water in ratio, sprayed to contaminated soil surface, then covered with yellow sand, and cooperated with microorganism in a methane liquid for absorption of the heavy metals in the soil, and after long time of degradation and dilution, the heavy metals can be used as soil nutrients. Heavy metal ions can be fixed in a product structure in a use process, after digestion and absorption by the microorganism, the heavy metals can be used as the soil nutrients, secondary pollution is not caused, and the heavy metals as a soil fertilizer can be used and promoted in large-scale.

Description

technical field [0001] The invention discloses a normal temperature heavy metal stabilizer and a method for stabilizing soil heavy metals using the same, belonging to the field of synthesis of heavy metal stabilizers. Background technique [0002] At present, commonly used soil solidification / stabilizers mainly include the following types: 1. Solidification of inorganic materials such as cement, lime, and fly ash; 2. Thermoplastic organic materials such as asphalt and polyethylene, and thermosetting organic materials such as urea-formaldehyde and polyester. Curing; 3. Vitrification technology; 4. Stabilization of ferrous sulfate, phosphate, sodium hydroxide, polymer organic matter and other agents. Due to technical and cost reasons, the solidification / stabilization of inorganic materials such as cement, lime, and fly ash as additives is the most widely used, accounting for 94% of the number of projects. [0003] Cement is an inorganic hydraulic gelling material. Its main co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40
CPCC09K17/40
Inventor 孙辰鹏赵远孙向武杨泽平陈江杰殷鸿洋张念慈陶利华宋瑜陈婷戴江吴彬
Owner CHANGZHOU UNIV