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Method for using nanometer titania in soil remediation

A nano-titanium dioxide and soil remediation technology, applied in the field of soil pollution control, can solve the problems of slow effect and long duration of phytoremediation, and achieve the effect of improving vitality, improving light utilization rate, and efficiently removing Cd2+

Inactive Publication Date: 2018-04-17
HEBEI MILSON TITANIUM DIOXIDE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] But the existing CD 2+ The phytoremediation technology of contaminated soil has certain limitations, such as long duration and slow effect of phytoremediation

Method used

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  • Method for using nanometer titania in soil remediation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Nano-titanium dioxide is used for the method of soil remediation, planting sunflowers on Cd2+ polluted soil, the row spacing is 60cm, the plant spacing is 40cm, and the mixed solution composed of lanthanum chloride, titanium dioxide and water is regularly sprayed on the sunflower leaf surface during the growth cycle of the sunflower, The mass ratio of the lanthanum chloride, titanium dioxide, xylitol and water is 3:50:30:167.

[0019] Start spraying on the 15th day from planting, and the spraying amount is 5 kg / mu; then after another 5 days, that is, when the growth days are 20 days, spray again, and the spraying amount is 5 kg / mu; then after another 5 days, that is, the growth days 25. Spray again, the spraying amount is 5 kg / mu; then after another 5 days, that is, when the growing days are 30 days, spray again, and the spraying amount is 6 kg / mu; then after another 5 days, that is, when the growing days are 35 days, spray again , the spraying amount is 8 kg / mu; then a...

Embodiment 2

[0021] The method that nano-titanium dioxide is used for soil remediation, to Cd 2+ Plant sunflowers on polluted soil, row spacing 70cm, plant spacing 50cm, in the growth cycle of sunflower, regularly spray the mixed solution that is made up of lanthanum chloride, titanium dioxide, water to the sunflower leaf surface, described lanthanum chloride, titanium dioxide, xylitol , The mass ratio of water is 2:45:29:160.

[0022] Start spraying on the 15th day from planting, the spraying amount is 5 kg / mu; then after another 15 days, that is, when the growth days are 30 days, spray again, and the spraying amount is 6 kg / mu; then after another 15 days, that is, the growth days 45, spray again, the spraying amount is 9 kg / mu; then after another 15 days, that is, when the growing days are 60 days, spray again, and the spraying amount is 11 kg / mu; then after another 15 days, that is, when the growing days are 75 days, spray again , the spraying rate is 17 kg / mu; then after another 15 da...

Embodiment 3

[0024] The method that nano-titanium dioxide is used for soil remediation, to Cd 2+ Plant sunflowers on polluted soil, row spacing 80cm, plant spacing 60cm, in the growth cycle of sunflower, regularly spray the mixed solution that is made up of lanthanum chloride, titanium dioxide, water to the sunflower leaf surface, described lanthanum chloride, titanium dioxide, xylitol , The mass ratio of water is 3:47:28:165.

[0025] Start spraying on the 15th day from planting, the spraying amount is 5 kg / mu; then after another 10 days, that is, when the growth days are 25 days, spray again, and the spraying amount is 6 kg / mu; then after another 10 days, that is, the growth days 35. Spray again, the spraying amount is 8 kg / mu; then after another 10 days, that is, when the growing days are 45 days, spray again, and the spraying amount is 9 kg / mu; then after another 10 days, that is, when the growing days are 55 days, spray again , the spraying rate is 10 kg / mu; then after another 10 day...

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Abstract

The invention discloses a method for using nanometer titania in soil remediation and belongs to the technical field of soil pollution remediation. Sunflowers are planted on Cd2+ polluted soil, mixed solution composed of lanthanum chloride, titania and water is sprayed on leaf surfaces of the sunflowers in the growth cycle of the sunflowers, and the mass ratio of the lanthanum chloride, the titania, xylitol and the water is (2-4):(45-55):(25-30):(160-170). The method is simple and efficient and is not limited by regions, and remediation ability for the Cd2+ polluted soil can be improved greatly.

Description

technical field [0001] The invention belongs to the technical field of soil pollution control and relates to Cd 2+ The remediation of polluted soil specifically relates to the method for soil remediation of nanometer titanium dioxide. Background technique [0002] Soil is one of the main resources for human survival, Cd 2+ is one of the most important pollutants in soil, Cd in soil 2+ Pollution originates from mining, smelting, municipal waste, fertilizer impurities and sewage sediments, etc., Cd 2+ The high enrichment in the soil directly affects the grain yield and reduces its quality, while Cd 2+ After polluting the soil, it will endanger human health through the food chain. Therefore, for Cd 2+ The remediation and treatment technology of polluted soil has become one of the research hotspots in the field of environmental engineering chemistry. Currently, for Cd 2+ Contaminated soil can be treated by physical, chemical, phytoremediation and microbial remediation tec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/00
CPCB09C1/105
Inventor 张建平张川张千张潇
Owner HEBEI MILSON TITANIUM DIOXIDE
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