Method for repairing petroleum-contaminated soil through rhamnolipid modified biochar reinforced spartina anglica

A rhamnolipid and oil-polluted technology, applied in the restoration of polluted soil, carbon preparation/purification, etc., can solve the problems of increasing petroleum hydrocarbons, low biological efficiency, and low bioavailability of organic pollutants, and achieve nitrogen fixation Strong capacity, many rhizosphere microorganisms, and the effect of restoring and improving biodiversity

Active Publication Date: 2019-05-24
NANKAI UNIV
View PDF10 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of low bioavailability and low biological efficiency of organic pollutants in the soil, and provide a method for strengthening Spartina with rhamnolipid modified biochar to repair oil-contaminated soil, using rhamnolipid modified Biochar improves the soil environment, provide...

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 repairing petroleum-contaminated soil through rhamnolipid modified biochar reinforced spartina anglica
  • Method for repairing petroleum-contaminated soil through rhamnolipid modified biochar reinforced spartina anglica

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0029] (1) The rice husk was repeatedly washed with deionized water to remove surface dust, and dried in a drying oven at 60° C. for 12 hours. Crush the washed and dried rice husks to a particle size of about 2 mm, place the crushed rice husks in a ceramic crucible (full), and use N 2 Close the lid immediately after removing the air. After sealing the crucible and lid with tinfoil paper, pyrolyze in a muffle furnace at 700°C for 3 hours with limited oxygen. The biochar obtained by pyrolysis was passed through a 50-mesh sieve, washed with 1mol / L HCl solution, and then washed repeatedly with deionized water until the pH of the biochar solution was close to neutral. Put the washed biochar in an oven, dry it at 80°C, and store it in a glass sample bottle, which is recorded as 700BC.

[0030] (2) Prepare 10mmol / L rhamnolipid aqueous solution, then add the biochar obtained in 10g step (1) and 50mL rhamnolipid aqueous solution into a 100mL Erlenmeyer flask, place on a magnetic stir...

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

Provided is a method for repairing petroleum-contaminated soil through rhamnolipid modified biochar reinforced spartina anglica. The method includes the steps of loading rhamnolipid on biochar to prepare rhamnolipid modified biochar, evenly mixing the rhamnolipid modified biochar with the petroleum-contaminated soil, and transplanting spartina anglica seedlings into the soil so as to repair the contaminated soil. The spartina anglica and the rhamnolipid modified biochar are combined to repair the petroleum-contaminated soil, the soil degradation, productive force declining and other problems caused by petroleum contamination can be easily improved, and the biological diversity of contaminated soil is restored and improved. The rhamnolipid modified biochar can improve the soil environment,provide nutrients for spartina anglica and increase the bio-availability of petroleum hydrocarbon in the soil, thereby promoting the growth and development of the spartina anglica, enhancing the tolerance of the spartina anglica to the petroleum hydrocarbon and remarkably improving the efficiency of repairing the petroleum-contaminated soil through the spartina anglica. The method is wide in application range and convenient to operate, in-situ continuous operation can be conducted, and no secondary contamination can be caused.

Description

technical field [0001] The invention provides a method for repairing oil-contaminated soil by strengthening Spartina with rhamnolipid modified biochar, and belongs to the technical field of repairing contaminated soil. Background technique [0002] In recent years, the use of low-cost and environmentally friendly phytoremediation technology to treat oil-contaminated soil has been widely recognized by researchers at home and abroad. Phytoremediation is a complex process, mainly including plant extraction, plant volatilization, plant fixation, plant absorption transformation and rhizosphere microbial restoration. The effect of phytoremediation is easily limited by factors such as temperature, time, pollutant distribution, and soil nutritional conditions. Studies have shown that adding biochar can improve the efficiency of phytoremediation technology in terms of improving the soil environment and providing nutrients. However, some polymer polycyclic aromatic hydrocarbons in s...

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): B09C1/00C01B32/05
Inventor 唐景春甄梅楠宋本如于宸李松
Owner NANKAI 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