Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Soil heavy metal pollution environmental protection repair agent, soil heavy metal environmental protection repair method

A technology of heavy metals and remediation agents, applied in the restoration, fermentation, agriculture and other directions of polluted soil, can solve the problems of long-term environment, pollutants, heavy metals cannot be degraded by microorganisms, etc., to promote root growth, improve soil fertility, and improve plants. Effects of root microbial environment

Active Publication Date: 2020-12-29
米涛(上海)环保科技有限公司
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 1. Heavy metals cannot be degraded by microorganisms and are long-term and potential pollutants in the environment;

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Soil heavy metal pollution environmental protection repair agent, soil heavy metal environmental protection repair method
  • Soil heavy metal pollution environmental protection repair agent, soil heavy metal environmental protection repair method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1: the preparation of rhamnolipid biosurfactant

[0032] Pseudomonas aeruginosa CCTCC AB 2013184 was added to the fermentation medium at an inoculum size of 3% (V / V), and cultured on a shaker at 37°C at a speed of 280 rpm for 90 hours to obtain a fermentation broth;

[0033] The composition of the fermentation medium is olive oil 60g / L, sodium nitrate 8g / L, sodium chloride 1.0g / L, potassium chloride 1.0g / L, calcium chloride 0.1g / L, KH 2 PO 4 12H 2 O 3.5g / L, magnesium sulfate 0.25g / L, FeSO 4 ·7H 2 O 0.001g / L, the balance is water, pH6.6.

[0034] The fermentation broth was incubated at 120°C for 30 minutes, then cooled to 40°C, centrifuged at 10,000 rpm for 5 minutes to remove bacterial fragments, and the supernatant was extracted with an equal volume of ethyl acetate, and then used a rotary evaporator Distill under reduced pressure to control the rhamnolipid content to 10g / L to obtain the bio-environmental friendly surfactant of the present invention.

Embodiment 2

[0035] Embodiment 2: the preparation of rhamnolipid biosurfactant

[0036] Pseudomonas aeruginosa CCTCC AB 2013184 was added to the fermentation medium at an inoculum size of 3% (V / V), and cultured on a shaker at 37°C at a speed of 280 rpm for 90 hours to obtain a fermentation broth;

[0037] The composition of the fermentation medium is 60g / L of safflower seed oil, 8g / L of sodium nitrate, 1.0g / L of sodium chloride, 1.0g / L of potassium chloride, 0.1g / L of calcium chloride, KH 2 PO 4 12H 2 O 3.5g / L, magnesium sulfate 0.25g / L, FeSO 4 ·7H 2 O 0.001g / L, the balance is water, pH6.6.

[0038] The fermentation broth was incubated at 120°C for 30 minutes, then cooled to 40°C, centrifuged at 10,000 rpm for 5 minutes to remove bacterial fragments, and the supernatant was extracted with an equal volume of ethyl acetate, and then used a rotary evaporator Distill under reduced pressure to control the rhamnolipid content to 10g / L to obtain the bio-environmental friendly surfactant of t...

Embodiment 3

[0039] Embodiment 3: the preparation of rhamnolipid biosurfactant

[0040] Pseudomonas aeruginosa CCTCC AB 2013184 was added to the fermentation medium at an inoculum size of 3% (V / V), and cultured on a shaker at 37°C at a speed of 280 rpm for 90 hours to obtain a fermentation broth;

[0041] The composition of the fermentation medium is olive oil 20g / L, safflower seed oil 40g / L, sodium nitrate 8g / L, sodium chloride 1.0g / L, potassium chloride 1.0g / L, calcium chloride 0.1g / L 、KH 2 PO 4 12H 2 O 3.5g / L, magnesium sulfate 0.25g / L, FeSO 4 ·7H 2 O0.001g / L, the balance is water, pH6.6.

[0042] The fermentation broth was incubated at 120°C for 30 minutes, then cooled to 40°C, centrifuged at 10,000 rpm for 5 minutes to remove bacterial fragments, and the supernatant was extracted with an equal volume of ethyl acetate, and then used a rotary evaporator Distill under reduced pressure to control the rhamnolipid content to 10g / L to obtain the bio-environmental friendly surfactant of...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an environmental protection repairing agent and method for heavy metal pollution in soil. The environmental protection repairing agent is made from, by weight, 10-30 parts of potassium fulvate, 10-30 parts of monopotassium phosphate, 10-20 parts of L-malic acid, 20-40 parts of rhamnolipid bio-surfactant, 1-3 parts of Sodium 2,3-dimercapto-1-propanesulfonate, and 2-8 parts of sodium carboxymethyl cellulose. The environmental protection repairing agent may be complexed with heavy metal ions in soil, thereby reducing soil interfacial tension, shielding activity of heavy metal ions, reducing toxicity of the heavy metal ions and decreasing the quantity of heavy metal ions absorbed by plants; in addition, the environmental protection repairing agent can provide phosphorusand potassium nutrition for soil and plants, and balance and improve soil nutritional condition, thereby improving soil fertility; the environmental protection repairing agent can also effectively improve plant root microbial environment, thereby improving metabolism of microbes, promoting root growth and improving crop quality.

Description

technical field [0001] The invention relates to an environment-friendly restoration agent for soil heavy metal pollution and an environment-friendly restoration method for soil heavy metal. Background technique [0002] Heavy metal pollution of the soil refers to human activities, the content of trace metal elements in the soil exceeds the background value, and the excessive content caused by excessive deposition is collectively referred to as soil heavy metal pollution. [0003] Heavy metals refer to metals with a specific gravity equal to or greater than 5.0, such as Fe, Mn, Zn, Cd, Hg, Ni, Co, etc.; As is a metalloid, but due to its chemical properties and environmental behavior are similar to heavy metals, Therefore, when discussing heavy metals, arsenic is often included, and some directly include it in the scope of heavy metals. Due to the high content of iron and manganese in soil, it is generally considered that they are not soil pollution elements, but under strong...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/80B09C1/08C12P7/62
Inventor 徐云丽
Owner 米涛(上海)环保科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com