Supercharge Your Innovation With Domain-Expert AI Agents!

Preparation method of sulfhydryl coal gangue and application thereof in soil remediation

A technology of mercapto-based coal gangue and coal gangue, which is applied in the field of material modification and soil heavy metal pollution restoration, can solve problems such as air, soil, water pollution and geological disasters, damage to the ecological environment, and impact on natural landscapes. The effect of low requirements and strong chemical adsorption capacity

Inactive Publication Date: 2019-04-23
HENAN UNIVERSITY
View PDF5 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is a serious dissonance between the high output rate of coal gangue and its lagging treatment efficiency, which makes it difficult to change the situation of coal gangue piled on the surface in the short term
This not only occupies a large amount of cultivated land, affects the natural landscape, and destroys the ecological environment in the community, but also causes air, soil, water pollution and geological disasters.

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
  • Preparation method of sulfhydryl coal gangue and application thereof in soil remediation
  • Preparation method of sulfhydryl coal gangue and application thereof in soil remediation
  • Preparation method of sulfhydryl coal gangue and application thereof in soil remediation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The preparation method of present embodiment mercapto coal gangue is as follows:

[0027] (1) Crushing the gangue through a 200-mesh sieve;

[0028] (2) Then acidify in a sulfuric acid solution with a mass fraction of 20% to remove metals in coal gangue, wash with deionized water until neutral, and then dry for later use;

[0029] (3) Add 10g of acidified gangue to 100ml of sulfuric acid solution with a volume fraction of 50%, stir at 80°C for 30 minutes, add potassium permanganate in multiple batches, totaling 1g, and deionize the oxidized gangue Wash with water until neutral, dry for later use;

[0030] (4) Then put 10g of oxidized coal gangue into a 250ml round bottom flask with 50ml of methanol, and stir for 30min, add 10g of ethylenediamine, gradually raise the temperature to 75°C, and reflux for 2h; add 20ml of 3-mercaptopropyltrimethyl Oxysilane solution (volume ratio of 3-mercaptopropyltrimethoxysilane to methanol = 1:1), the mass of 3-mercaptopropyltrimethoxy...

Embodiment 2

[0035] The preparation method of present embodiment mercapto coal gangue is as follows:

[0036] (1) Crushing the gangue through a 200-mesh sieve;

[0037] (2) Then acidify in a nitric acid solution with a mass fraction of 10% to remove metals in coal gangue, wash with deionized water until neutral, and dry for later use;

[0038] (3) Add 10g of acidified gangue to 100ml of sulfuric acid solution with a volume fraction of 50%, stir at 70°C for 30 minutes, add potassium permanganate in multiple batches, totaling 1g, and deionize the oxidized gangue Wash with water until neutral, dry for later use;

[0039](4) Then put 10g of oxidized coal gangue into a 250ml round bottom flask with 50ml of methanol, and stir for 30min, add 10g of ethylenediamine, gradually raise the temperature to 70°C, and reflux for 2h; add 20ml of 3-mercaptopropyl trimethyl Oxysilane solution (volume ratio of 3-mercaptopropyltrimethoxysilane to methanol = 1:1), the mass of 3-mercaptopropyltrimethoxysilane ...

Embodiment 3

[0041] The preparation method of present embodiment mercapto coal gangue is as follows:

[0042] (1) Crushing the gangue through a 200-mesh sieve;

[0043] (2) Then acidify in a hydrochloric acid solution with a mass fraction of 30% to remove metals in coal gangue, wash with deionized water until neutral, and then dry for later use;

[0044] (3) Add 10g of acidified gangue to 100ml of sulfuric acid solution with a volume fraction of 50%, stir at 90°C for 30 minutes, add potassium permanganate in multiple batches, totaling 1g, and deionize the oxidized gangue Wash with water until neutral, dry for later use;

[0045] (4) Then put 10g of oxidized coal gangue into a 250ml round bottom flask with 50ml of methanol, and stir for 30min, add 10g of ethylenediamine, gradually raise the temperature to 80°C, and reflux for 2h; add 20ml of 3-mercaptopropyltrimethyl Oxysilane solution (volume ratio of 3-mercaptopropyltrimethoxysilane to methanol = 1:1), the mass of 3-mercaptopropyltrimet...

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 a preparation method of sulfhydryl coal gangue and applications thereof in soil remediation and belongs to the technical field of material modification and remediation of heavymetal pollution in soil. The preparation method of the sulfhydryl coal gangue is characterized in that 3-mercaptopropyltrimethoxysilane is grafted onto the surface of the coal gangue to enable the surface of the coal gangue to be provided with an active group capable of binding to heavy metal ions, so that the modified coal gangue is made to have a large chemical adsorption capacity for the heavymetal ions. The prepared sulfhydryl modified coal gangue has the advantages of simple steps, low price, large adsorption capacity, mild conditions, low requirements on equipment, suitability for forremediation of soils contaminated by heavy metals such as lead, copper and cadmium, and great application value.

Description

technical field [0001] The invention belongs to the technical field of material modification and soil heavy metal pollution restoration, and in particular relates to a preparation method of mercapto coal gangue and its application in repairing heavy metal pollution in soil. Background technique [0002] The problem of soil pollution is a key and difficult issue of social concern and the concern of the people, and it is also one of the major environmental problems that need to be solved urgently. [0003] The technical principles of contaminated soil remediation can be summarized as follows: (1) The aim is to reduce the risk of pollution, that is, to reduce the mobility and bioavailability of pollutants in the environment by changing the form of pollutants in the soil or the way they combine with the soil; Utilization; (2) The purpose is to reduce the total amount of pollution, that is, to remove harmful substances from the soil through treatment, so as to reduce the total co...

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): B01J20/22B01J20/30C09K17/40B09C1/08
CPCB01J20/103B01J20/22B09C1/08C09K17/40
Inventor 李德亮尚中博常志显张力文种瑞峰
Owner HENAN UNIVERSITY
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com