Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method and application of graphene membrane composite quartz sand adsorbent

A technology of graphene film and quartz sand, applied in chemical instruments and methods, adsorption water/sewage treatment, water/sludge/sewage treatment, etc., can solve difficult large-scale applications, unfavorable water purification, secondary pollution and other problems, to achieve the effect of short adsorption time, easy repeated recycling, and high adsorption efficiency

Inactive Publication Date: 2016-12-07
华北电力大学苏州研究院
View PDF0 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, graphene, as a nanomaterial, may cause secondary pollution when it adsorbs heavy metal ions, which is not conducive to water purification. Due to its uncontrollability in subsequent processing, it is difficult for nanomaterials to be widely used.

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

Embodiment 1

[0018] The preparation method of graphene membrane composite quartz sand adsorbent, it comprises the steps:

[0019] 1) Substrate pretreatment: use quartz sand as the substrate, add it to 5wt% polyvinyl alcohol ethanol solution, and react at 100°C for 2 hours under continuous stirring to make the surface of the quartz sand rich in hydroxyl groups, and place it in an oven After drying at 50°C, the pretreated matrix was obtained, ready for use:

[0020] 2) Preparation of graphene membrane composite quartz sand: immerse the pretreated matrix in an ethanol solution containing γ-aminopropyltrimethoxysilane coupling agent with a volume concentration of 1%, at 50°C, under continuous stirring React under the action for 10 hours, take out the substrate, dry it, then add it to an organic solution containing 5wt% graphene, and react at 100°C for 10 hours to obtain a graphene film composite quartz sand adsorbent.

[0021] The graphene film composite quartz sand adsorbent sample was analy...

Embodiment 2

[0026] The preparation method of graphene membrane composite quartz sand adsorbent, it comprises the steps:

[0027] 1) Substrate pretreatment: use quartz sand as the substrate, add it to 5wt% polyvinyl alcohol in methanol solution, and react at 100°C for 2 hours under continuous stirring to make the surface of the quartz sand rich in hydroxyl groups, and place it in an oven After drying at 50°C, the pretreated matrix was obtained, ready for use:

[0028] 2) Preparation of graphene membrane composite quartz sand: immerse the pretreated matrix in an ethanol solution containing 1% 3-aminopropyltrimethoxysilane coupling agent by volume concentration, at 50°C, under continuous stirring React under the action for 10 hours, take out the substrate, dry it, then add it to an organic solution containing 5wt% graphene, and react at 100°C for 10 hours to obtain a graphene film composite quartz sand adsorbent.

[0029] The graphene film composite quartz sand adsorbent sample was analyzed...

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 and application of a graphene membrane composite quartz sand adsorbent capable of adsorbing heavy metal ions and organic matters in waste water. The preparation method comprises the following steps: 1) by using quartz sand as a base material, adding the quartz sand into an organic solution of polyvinyl alcohol, so that the surface of the quartz sand is rich in hydroxyl; putting the quartz sand in a baking oven for drying at the temperature of 20 to 50 DEG C, thus obtaining the pretreated base material for standby use; 2) immersing the pretreated base material into an ethanol solution containing a silane coupling agent with the volume concentration of 0.1% to 10%, taking out the base material, drying, then adding the dried base material into an organic solution containing 0.1wt% to 10wt% of graphene, and reacting for 1 to 10 h at the temperature of 50 to 100 DEG C, so as to obtain the graphene membrane composite quartz sand adsorbent. The quartz sand is combined with the graphene, so that the uncontrollability of nano materials in subsequent treatment is avoided, a nanotechnology is creatively applied to the treatment of organic waste water with high toxicity, low concentration and difficult degradation as well as heavy metal waste water, and the adsorption rates of the organic waste water and the heavy metal waste water are both 95% or more.

Description

technical field [0001] The invention relates to a preparation method and application of a graphene membrane composite quartz sand adsorbent for absorbing heavy metal ions in wastewater, and belongs to the field of water treatment in environmental protection. Background technique [0002] Metal ions have high toxicity, wide distribution, low content, and are not easy to degrade. They disperse in the environment for a long time, and finally are absorbed by plants through bioaccumulation, and enter the human body through the food chain, which has a serious impact on human survival and health. Therefore, the deep treatment of heavy metal ions in complex samples is very meaningful. Adsorption is a commonly used treatment method at present. Compared with other methods, it has low cost, easy operation, and is not easy to cause secondary pollution. The performance of the adsorbent determines the effect of advanced treatment, and its selection is the key factor. Carbon-based adsorbe...

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): B01J20/20B01J20/30C02F1/28
CPCB01J20/10B01J20/20C02F1/288
Inventor 张一梅侯文俊
Owner 华北电力大学苏州研究院
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