Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Modified bamboo biochar material for treating cadmium pollution in water and preparation method of modified bamboo biochar material

A biochar, cadmium pollution technology, applied in water pollutants, chemical instruments and methods, other chemical processes, etc., can solve the problems of easy analysis, small adsorption capacity, etc., to improve production efficiency, short process flow, and improve active functional groups. Effect

Pending Publication Date: 2021-06-01
贵州省林业科学研究院
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a modified bamboo biochar material and its preparation method for controlling cadmium pollution in water, so as to solve the problems of easy analysis and small adsorption capacity in the process of removing heavy metal cadmium in water by ordinary biochar

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
  • Modified bamboo biochar material for treating cadmium pollution in water and preparation method of modified bamboo biochar material
  • Modified bamboo biochar material for treating cadmium pollution in water and preparation method of modified bamboo biochar material
  • Modified bamboo biochar material for treating cadmium pollution in water and preparation method of modified bamboo biochar material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The materials and reagents used in this example can be obtained from commercial sources unless otherwise specified.

[0025] The bamboo stalks in this embodiment are preferably mature bamboo, or its processing residues. The mature bamboo stalks are chopped into chunky fragments with a length and width below 1 cm, divided into six parts, then dried at 100 ± 5 ° C, and then dried in a vacuum Carbonization treatment in the state: vacuum degree is about 0.068MPa, first heat to 90°C, keep for 30min, then heat from 90°C to 300°C, keep for 1h to complete carbonization. Six parts of charred bamboo were activated at 500, 600, 700, 800, 900 and 1000 °C for 2 h, and at the same time, when heating from 300 °C, all of them were filled with N 2 The gas is protected, and the N2 flow rate is maintained at 30-45ml / min. The yields of bamboo biochar are: 16.94, 15.02, 14.14, 14.13, 13.95, and 13.86. It can be seen that with the increase of activation temperature, the charcoal yield Gradu...

Embodiment 2

[0036] The difference between Example 2 and Example 1 is that Nanzhu is replaced by adult cotton bamboo as the preparation material. Through the same preparation steps and adsorption experiments as in Example 1, it is found that there is no significant difference in the adsorption effect. The results are shown in image 3 .

Embodiment 3

[0038] Considering the cost factor, the difference from Example 1 is that the carbonization and activation stages are not charged with N 2 Gas, the research results show that the carbon yield of bamboo biochar tends to decrease. Under the same preparation temperature, the char yield decreases by about 6%, and the adsorption rate of modified bamboo biochar decreases slightly. The adsorption rate of cadmium under the same conditions rate decreased by 1.3 to 4.2%.

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

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
sizeaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of biochar materials, and particularly discloses a modified bamboo biochar material for treating cadmium pollution in water and a preparation method of the modified bamboo biochar material. The preparation method comprises the steps that Phyllostachys heterocycla is pretreated, pyrolyzed, carbonized and activated to obtain bamboo biochar, chitosan is used to prepare an aqueous solution, the aqueous solution and bamboo biochar powder are stirred and mixed evenly, standing is conducted for 2 d, drying is conducted in a drying box at the temperature of 100+ / -5 DEG C, and therefore the modified bamboo biochar is obtained. The preparation method is mainly applied to the process of preparation and use of modified biochar. The problems that common biochar is easy to analyze and small in adsorption capacity in the process of removing heavy metal cadmium in water are solved.

Description

technical field [0001] The invention belongs to the technical field of biochar materials, and specifically discloses a modified bamboo biochar material for controlling cadmium pollution in water and a preparation method thereof. Background technique [0002] Heavy metal cadmium in water bodies exceeds the standard, mainly from industrial pollution, domestic sewage, and water-soluble cadmium in the earth's crust. Through the enrichment of cadmium through the food chain, aquatic foods such as crops irrigated by water and fish and shrimp living in water are polluted by cadmium, causing great harm to animals, plants and the ecological environment. People who eat it for a long time are prone to suffer from "ricket disease", and at the same time damage the liver and kidney of the human body, seriously endangering human life and health. [0003] In recent years, remediation of heavy metal pollution in water has become one of the research hotspots. At this stage, in order to avoid...

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
Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F101/20
CPCB01J20/20B01J20/24C02F1/283C02F1/286C02F2101/20B01J2220/4825
Inventor 黄安香杨守禄杨定云周显勇王忠伟姬宁张彦雄李丹柏文恋
Owner 贵州省林业科学研究院
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com