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Method for strengthening phytoremediation of petroleum hydrocarbon polluted soil through root exudates

A technology of root exudates and phytoremediation, applied in the restoration of contaminated soil, etc., can solve the problems of long phytoremediation cycle, achieve the effects of improving soil degradation, accelerating the process of bioremediation, and improving degradation efficiency

Pending Publication Date: 2020-10-30
YANGTZE UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Phytoremediation also has certain limitations: the cycle of phytoremediation is long; phytoremediation has certain requirements on natural conditions such as soil type, soil fertility, moisture, and pH

Method used

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  • Method for strengthening phytoremediation of petroleum hydrocarbon polluted soil through root exudates
  • Method for strengthening phytoremediation of petroleum hydrocarbon polluted soil through root exudates
  • Method for strengthening phytoremediation of petroleum hydrocarbon polluted soil through root exudates

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Embodiment

[0038] Under laboratory conditions, the petroleum hydrocarbon polluted soil is simulated and the method of the present invention is used to restore the simulation, and the process is as follows:

[0039] The clean soil is placed on a plastic film and spread out to a thickness of about 2cm, and placed in a cool place to air dry naturally. According to the needs of the test, pass the air-dried clean soil through a 2mm sieve, weigh a certain quality of petroleum, dissolve it in petroleum ether (every 1kg of clean soil is fully mixed with 500mL of petroleum ether), and sequentially prepare the total petroleum hydrocarbon mass. The percentage content is 0.6%, 0.9%, 1.2%, 1.5%, 1.8% of different pollution concentration levels. Let stand for 15d, and sow seeds after the petroleum ether is completely volatilized. The experiment was divided into 1 control and 6 treatments, and each control treatment was repeated 3 times, with a total of 105 parallel samples. Specific design: control ...

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Abstract

The invention belongs to the technical field of soil remediation, and discloses a method for reinforcing phytoremediation of petroleum hydrocarbon polluted soil by utilizing a root exudate, the root exudate is glycine, and the plant is at least one of ryegrass, sudangrass and white clover; the repair time is greater than or equal to 71 days. The method is high in restoration rate and high in ecological benefit.

Description

technical field [0001] The invention relates to the technical field of soil treatment, in particular to a method for utilizing root exudates to strengthen phytoremediation of petroleum hydrocarbon-contaminated soil. Background technique [0002] The description of the background technology in the present invention belongs to the related art related to the present invention, and is only used to illustrate and facilitate the understanding of the invention content of the present invention, and should not be construed as the applicant's explicit belief or presumption that the applicant believes that the present invention is the first application of the present invention. prior art at the filing date. [0003] With the rapid development of industrial technology, the position of petroleum resources in economic operation is very important. The oil-bearing mud, cuttings and falling crude oil in the process of oil exploration, exploitation, storage and transportation have caused ser...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/10
CPCB09C1/105
Inventor 李中宝梅平邓南鑫赖璐
Owner YANGTZE UNIVERSITY