Application of grain amaranth in repairing mine soil and sludge polluted by heavy metal cadmium

A kind of technology for grain amaranth and cadmium pollution, applied in the restoration of polluted soil, biological sludge treatment, etc., can solve the problems of insufficient plant species resources, achieve rapid natural reproduction and growth, strong wind diffusion ability, and reduce copper heavy metals The effect of content

Inactive Publication Date: 2010-03-17
SICHUAN AGRI UNIV +5
View PDF0 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention aims at the above-mentioned problem of insufficient resources of plant species that can be used for bioremediation of heavy metal

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

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0017] Example 1

[0018] The application of grain amaranth in the restoration of soil heavy metal cadmium pollution in this embodiment is as follows:

[0019] Direct transplanting method is adopted. Under natural conditions, the grain amaranth (Amaranthus hypochondriacus L.) is planted in the soil contaminated by heavy metals in the Xinkang Shimian mining area in Shimian County, Sichuan Province; watering is not carried out regularly according to the growth of the plants. Special management.

[0020] After 85 days, stubble was used to harvest the above-ground part of the plant, and the weight percentage of heavy metal Cd was measured as 118.5mgkg -1 . The stubble part continues to grow and harvest, so continuous extraction can effectively repair the heavy metal cadmium pollution in the soil.

Example Embodiment

[0021] Example 2

[0022] The application of grain amaranth in the restoration of soil heavy metal cadmium pollution in this embodiment is as follows:

[0023] Seed direct seeding under natural conditions was used to plant Amaranthus hypochondriacus (Amaranthus hypochondriacus L.) in the soil contaminated by heavy metals in the Fuquan lead-zinc mining area in Hanyuan County, Sichuan Province; watering irregularly according to plant growth, no watering Special management.

[0024] Three months later, stubble was used to harvest the above-ground parts of the plants, and the weight percentage of heavy metal Cd was measured as: 127.5mg kg -1 . The stubble part continues to grow and harvest, so continuous extraction can effectively repair the heavy metal cadmium pollution in the soil.

[0025] From the above examples 1 and 2, it can be seen that the present invention uses seed amaranth planting in heavy metal contaminated soil, which can obviously absorb the heavy metal Cd in the contamin...

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 application of grain amaranth in repairing mine soil and sludge polluted by heavy metal cadmium, wherein the grain amaranth only needs to be planted in the mine soil or the sludge polluted by heavy metal cadmium. By using the characteristic that the grain amaranth enriches the heavy metal cadmium, the grain amaranth is planted in the mine soil or the sludge to be capable ofabsorbing the accumulated heavy metal cadmium and transmitting the most of the heavy metal cadmium to overground part to achieve the aim of repairing the mine soil and the sludge which are polluted by the heavy metal cadmium. The grain amaranth does not need special management in the process of growing, therefore, the invention has the characteristics of less investment, low cost, strong operability, less disturbance to soil environment, permanent managing effect, not breaking site structure, not causing secondary pollution, wide application area, simple post processing, and the like; and thegrain amaranth has large individual biomass, can improve the effect for repairing the heavy metal in unit area, and provides a new plant resource variety for repairing the soil polluted by the heavymetal cadmium.

Description

technical field [0001] The invention relates to the technical field of remediation of heavy metal pollution in the environment, in particular to the application of plant grain amaranth in remediation of heavy metal cadmium pollution in mine soil and sludge. Background technique [0002] Heavy metal cadmium pollution in the environment has the characteristics of concealment, long-term and irreversibility. Its pollutants have poor mobility in the medium, long residence time, cannot be degraded by microorganisms, and can be transmitted through the food chain, which will eventually affect human health and cause immeasurable Impact. Cadmium is carcinogenic and induces prostate cancer and testicular tumors in animals. At present, cadmium has been classified as the first carcinogen by the International Agency for Research on Cancer. [0003] Phytoremediation using heavy metal-enriching plants or hyperaccumulators is one of the research hotspots in environmental science today. It ...

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
IPC IPC(8): B09C1/00C02F11/02
Inventor 张世熔张小川徐小逊李婷贾永霞
Owner SICHUAN AGRI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap