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Application of lantana camara to remediation of heavy metal zinc, lead and copper polluted soil

A technology of lantana and copper pollution, which is applied in the application field of lantana in repairing soil polluted by heavy metals, zinc, lead and copper, can solve the problems of insufficient plant variety resources, and achieve the effect of low cost, strong vitality and easy survival

Inactive Publication Date: 2014-02-19
SICHUAN AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to aim at the problem of insufficient resources of plant varieties used for bioremediation of heavy metal-contaminated soil, and provides the application of lantana in remediation of heavy metal zinc-lead-copper-contaminated soil

Method used

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  • Application of lantana camara to remediation of heavy metal zinc, lead and copper polluted soil
  • Application of lantana camara to remediation of heavy metal zinc, lead and copper polluted soil
  • Application of lantana camara to remediation of heavy metal zinc, lead and copper polluted soil

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Experimental program
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Effect test

Embodiment 1

[0019] Embodiment 1 field test

[0020] The test site is the Fuquan joint lead-zinc mining area in Hanyuan County, western Sichuan. The zinc content of the soil in this mining area is 100.05-1542.46mg kg -1 , lead content is 13.19-538.56mg kg -1 , copper content is 124.83-334.25mg kg -1 . Ripe lantana (Latin name Lantana comara L.) fruits are picked, stacked and retting, soaked in water and scrubbed to remove the pulp to obtain lantana seeds. Sow the harvested seeds directly in the Fuquan joint lead-zinc mining area of ​​Hanyuan County, and thin the seedlings when 5-6 leaves emerge, with a row spacing of 1.0m and a plant spacing of 0.5m. According to the weather conditions, water every 5-7 days, and apply decomposed and diluted liquid fertilizer every 15 days. After 100 days of growth, 10 lantana plants were randomly selected, harvested from the place 2 cm above the second internode at the base of each branch, and the length of the remaining pile was about 10 cm. The cont...

Embodiment 2

[0021] Embodiment 2 Pot stress test

[0022] The test site is located in the teaching and research farm of Sichuan Agricultural University.

[0023] Using the method of potting to simulate heavy metal pollution in soil, the seedlings of Lantana comara L. in the Verbenaceae family were transplanted into potting soil contaminated with gradient concentrations of heavy metals zinc, lead and copper. 3 plants per pot, repeated 3 times. The soil weight of each pot is 8kg, and 0.4g of pure nitrogen and phosphorus (P 2 o 5 ) 0.32g, Potassium (K 2 O) 0.37g. There are 4 treatments in total in the test, namely CK (without adding heavy metals) and 3 experiments with different concentrations of heavy metals added, and the forms of heavy metals added are ZnSO 4 ·7H 2 O, Pb(NO 3 ) 2 and CuSO 4 ·5H 2 O, all reagents of analytical grade, were added to the soil in a solid state, mixed thoroughly, and balanced for four weeks before use. The concentration of heavy metals added is shown ...

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Abstract

The invention discloses application of lantana camara to remediation of heavy metal zinc, lead and copper polluted soil and relates to the technical field of remediation of heavy metal polluted environments. The lantana camara is planted into soil polluted by heavy metal zinc, lead and copper; the zinc, lead and copper in the soil are absorbed and accumulated according to the enrichment characteristic of the plant on the zinc, lead and copper, and most of the zinc, lead and copper are transferred to the overground part of the plant; finally, the overground part of the plant is harvested or the whole plant is harvested to be subjected to ashing treatment, and the heavy metal is extracted, so that the aim of remedying the zinc, lead and copper polluted soil is fulfilled. The lantana camara is thermophilic, hygrophilous, dry heat-resistant, barren-resistant, healthy and vigorous in growth and high in viability, can be trimmed and harvested and remain stubs to geminate shoots, and also can be integrally harvested and then reseeded, so the cost is low, the operability is high, and a new plant resource variety is developed for plant remediation of the heavy metal polluted soil.

Description

technical field [0001] The invention relates to the technical field of remediation of heavy metal polluted environment, in particular to the application of lantana in remediation of heavy metal zinc, lead and copper polluted soil. Background technique [0002] Soil is the material basis for the survival, reproduction and development of human beings and many creatures. However, with the rapid growth of population, the "three wastes" produced by mining, smelting, electroplating, chemical industry and other industries, as well as the unreasonable application of sewage irrigation, pesticides and fertilizers, have caused Serious heavy metal pollution. Western Sichuan is a well-known concentrated distribution area of ​​lead-zinc mines, copper mines, iron mines and rare earth mines. The tailings and waste water generated during the development of these mines contain a large amount of heavy metals such as zinc, lead and copper, which seriously pollute the soil and Adjacent farmland...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/00
Inventor 贾永霞张春梅方继宇张世熔李婷徐小逊李云蒲玉琳
Owner SICHUAN AGRI UNIV
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