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Method for preparing soil repairing promoter used together with plants and/or microorganisms

A soil remediation and microbial technology, applied in chemical instruments and methods, soil conditioning materials, applications, etc., can solve the problems of inability to remove heavy metals, slow effect, and long duration of microbial remediation, so as to reduce biological effectiveness and reduce pollution. , the effect of good soil remediation ability

Active Publication Date: 2017-10-10
HEBEI MILSON TITANIUM DIOXIDE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing microbial remediation technology for heavy metal-contaminated soil has certain limitations, such as microbial remediation lasts for a long time, takes effect slowly, generally forms complexes to reduce the harm of heavy metals, and cannot remove heavy metals from the soil

Method used

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  • Method for preparing soil repairing promoter used together with plants and/or microorganisms
  • Method for preparing soil repairing promoter used together with plants and/or microorganisms
  • Method for preparing soil repairing promoter used together with plants and/or microorganisms

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Weigh 0.05g, 0.10g, 0.15g, 0.20g, 0.25g of tetrabutyl titanate and dissolve it in 20mL ethanol solution to obtain solution A;

[0029] (2) Weigh 0.02mol of trehalose (6.846g) into 36.1ml of deionized water, stir magnetically until the solution is transparent, transfer to a 50mL polytetrafluoroethylene-lined stainless steel reactor, and react at 180°C for 8h , cooled to room temperature, centrifuged, and washed with distilled water and absolute ethanol until the filtrate was colorless. Vacuum-dried at 60°C for 12 hours to obtain black carbon microspheres; the black carbon microspheres are high molecular polymer microspheres, trehalose is carbonized into balls, and the surface is rich in functional groups.

[0030] (3) The ethanol / water solution that configuration volume ratio is 3:1 is standby;

[0031] (4) Measure 36.1ml of ethanol / water solution and place it in a reflux device equipped with a magnet, weigh 0.298g of Zn(NO 3 ) 2 ·6H 2 O is placed in a reflux dev...

Embodiment 2

[0035] The preparation method of the soil remediation accelerator used in conjunction with plants and / or microorganisms, comprises the following steps:

[0036] A. Dissolve 0.1g of tetrabutyl titanate in ethanol solution to obtain solution A, and set aside;

[0037] B. Mix 0.01mol trehalose (3.42296g) with 54ml deionized water until the solution is transparent, then place it in a polytetrafluoroethylene-lined stainless steel reactor, react at 200°C for 9 hours, cool to room temperature, centrifuge, and wash , Vacuum drying at 50°C for 12 hours to obtain black carbon microspheres;

[0038] C. Take 0.28gZn(NO 3 ) 2 ·6H 2O, 0.2g urea, 0.05g black carbon microspheres are added to 36.1ml ethanol / water volume ratio is 2:1 ethanol-water solution to carry out reflux reaction, after reflux reaction finishes, stop heating, after the temperature is about to 20 ℃, adjust material The pH value is 9.8-10.2. After stirring for 1 hour, aging for 2 hours, centrifugation, and washing to neu...

Embodiment 3

[0042] The preparation method of the soil remediation accelerator used in conjunction with plants and / or microorganisms, comprises the following steps:

[0043] A. Take 0.15g tetrabutyl titanate and dissolve it in ethanol solution to obtain solution A, which is set aside;

[0044] B. Mix 0.03mol trehalose (10.27g) with 18ml deionized water until the solution is transparent, then place it in a polytetrafluoroethylene-lined stainless steel reactor, react at 190°C for 7h, cool to room temperature, centrifuge, and wash , Vacuum drying at 55°C for 10 hours to obtain black carbon microspheres;

[0045] C, take 0.32gZn (NO 3 ) 2 ·6H 2 O, 0.4g urea, 0.2g black carbon microspheres are added to 36.1ml ethanol / water volume ratio is 4:1 ethanol-water solution to carry out reflux reaction, after reflux reaction finishes, stop heating, after the temperature is about to 20 ℃, adjust material The pH value is 9.8-10.2. After stirring for 1.5 hours, aging for 2.5 hours, centrifugation, wash...

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Abstract

The invention discloses a method for preparing a soil repairing promoter used together with plants and / or microorganisms and belongs to the technical field of soil repairing. The method comprises the following steps: A, dissolving tetrabutyltitanate in an ethanol solution to obtain a solution A; B, taking trehalose and deionized water, andpreparing black carbon microspheres; C, putting Zn(NO3)2.6H2O, urea and the black carbon microspheres into an ethanol-water solution, and performing backflow reaction to obtain a brown blackintermediate product; D, putting the brown blackintermediate product and ammonium citrate into a mixed system of cyclohexane, dicaprylyl ether and deionized water, and preparing a mixed solution B; E, adding vermiculite powder into the mixed solution B, dispersing for 30 minutes, dropping the solution A into the mixed solution B, performing centrifugalseparation, removing supernatant liquid, washing a solid-phase product till being neutral, drying, and calcining, thereby obtaining the soil repairing promoter. The method disclosed by theinvention is simple to operate, stable in preparation process and high in preparation efficiency.

Description

technical field [0001] The invention belongs to the technical field of soil restoration, and relates to a soil restoration accelerator, in particular to a preparation method of the soil restoration accelerator combined with plants and / or microorganisms. The preparation method of the invention is simple, easy to operate, mild in the reaction process, and the prepared soil restoration accelerator has a good promotion effect, and can obviously improve the restoration ability of the soil. Background technique [0002] Soil is one of the main resources that human beings depend on for survival. Heavy metals are one of the most important pollutants in soil. Heavy metal pollution in soil comes from mining, smelting, urban garbage, fertilizer impurities and sewage sediments. High levels of heavy metals in soil Enrichment directly affects the yield of grain and reduces its quality. At the same time, heavy metals pollute the soil and endanger human health through the food chain. There...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/08C09K17/40
CPCC09K17/08C09K17/40
Inventor 张建平张川张千
Owner HEBEI MILSON TITANIUM DIOXIDE
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