Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for restoring Cr-polluted soil by utilizing cyperus rotundus L.

A technology for polluting soil and Cyperus cyperi, applied in the field of repairing Cr-contaminated soil with Cyperus cyperifolia, can solve problems such as technical solutions for repairing chromium (Cr) polluted soil that have not yet been seen, and achieve the effect of strong practicability and low cost

Inactive Publication Date: 2015-05-13
HENAN JINGU IND DEV
View PDF3 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing reports, Cyperus cyperi has a certain enrichment effect on some heavy metal pollutants, but there is no relevant technical plan to use Cyperus cyperi to remediate chromium (Cr) polluted soil

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
  • Method for restoring Cr-polluted soil by utilizing cyperus rotundus L.
  • Method for restoring Cr-polluted soil by utilizing cyperus rotundus L.
  • Method for restoring Cr-polluted soil by utilizing cyperus rotundus L.

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The present invention is based on the first discovery that Rhizoma Cyperi has a super-enrichment effect on Cr. Therefore, the inventor first took the contaminated soil of a certain chromium-contaminated site as an example to carry out a soil pot test in the laboratory. The specific introduction is as follows.

[0022] (1) Planting and raising seedlings

[0023] In this experiment, the seedlings of Cyperus cyperi were planted in Cr-contaminated soil by transplanting seedlings. The specific steps are as follows:

[0024] Sow the seeds of Cyperus cyperi in a seedling tray with non-polluted soil, and put the seedling tray into an artificial climate incubator for cultivation;

[0025] When the seedlings grow to 4-6 true leaves, take the seedlings with the same height and growth and transplant them into flowerpots filled with chromium-contaminated soil. The diameter of the flowerpots is 15cm, and 20 plants are planted in each pot. The labels are Group A, Group B, Group C, Gr...

Embodiment 2

[0038] Further, the inventors aimed at different concentrations of Cr 6+ 、Cr 3+ The enrichment ability of Rhizoma Cyperi in polluted soil environment has been tested experimentally, and the brief introduction is as follows.

[0039] (1) Planting and raising seedlings

[0040] In this experiment, the seedlings of Cyperus cyperi were planted in Cr-contaminated soil by transplanting seedlings. The specific steps are as follows:

[0041] Sow the seeds of Cyperus cyperi in a seedling tray with non-polluted soil, and put the seedling tray into an artificial climate incubator for cultivation;

[0042] When the seedlings grew to 4-6 true leaves, transplant the seedlings with the same height and growth into pots filled with Cr-contaminated soil. The diameter of the pots was 15 cm, and 20 plants were planted in each pot.

[0043] (2) Growth adsorption

[0044] Transplant the Cyperus cyperi seedlings in the step (1) into the prepared Cr 6+ Cr 3+ In the contaminated soil with a cont...

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 belongs to the technical field of restoring heavy-metal polluted soil, and concretely relates to a method for restoring Cr-polluted soil by utilizing cyperus rotundus L.. The method comprises steps of plantation and seedling growing, growing and enrichment, harvesting, harmless processing, and the like. The provided method for restoring Cr-polluted soil by utilizing cyperus rotundus L. belongs to a method of restoring heavy-metal polluted soil by utilizing plants. The technical scheme principle comprises that a large amount of Cr in polluted soil is absorbed by cyperus rotundus L. root and are transferred into the plant, and when the plant grows to a mature stage, the the plant overground organs are moved away from polluted soil, thereby realizing the purpose of removing pollutant Cr in soil. The method has the advantages of low cost, high practicality, no destruction to soil basic structure and functions or water body physical and chemical properties, no secondary pollution, and the like, and the method is a relatively good restoration method for Cr-polluted soil.

Description

technical field [0001] The invention belongs to the technical field of remediation of heavy metal-contaminated soil, and in particular relates to a method for remediating Cr-contaminated soil by using Cyperus cyperi. Background technique [0002] Chromium (Cr) pollution is a relatively common heavy metal pollution. The existence forms of chromium in soil are usually trivalent and hexavalent. Hexavalent chromium is difficult to be adsorbed by soil colloids and has high activity. Therefore, it often occurs It has a strong toxic effect on organisms; trivalent chromium is easily absorbed by soil colloids to form precipitates, with stable form and low activity, and its toxicity to organisms is far lower than that of hexavalent chromium. After the soil is polluted by chromium, it will lead to the degradation of soil function, the reduction of crop yield, and even the loss of ecological functions in severe cases. Therefore, it is imperative to restore the chromium-contaminated soil...

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 Applications(China)
IPC IPC(8): B09C1/00
Inventor 潘志恒李顺灵张凯光王涛齐水莲李托王静景倩慧
Owner HENAN JINGU IND DEV