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

Method for preparation of activated carbon nano-iron composite material from kandelia candel leaf

A technology for preparing activated carbon and composite materials, which is applied in the direction of nanotechnology, nanotechnology, nanotechnology, etc. for materials and surface science. Economic and environmental benefits, the effect of overcoming easy deactivation and aggregation

Active Publication Date: 2018-05-18
MINNAN NORMAL UNIV
View PDF5 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the nano-iron particles synthesized by these methods will show defects such as inactivation, agglomeration, and difficulty in recovery during wastewater treatment, and they need to be loaded on a carrier to enhance practicability

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 preparation of activated carbon nano-iron composite material from kandelia candel leaf

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Using granular activated carbon as a carrier, using polyphenols, flavonoids, caffeine and other biologically active reducing agents contained in the candela leaf extract to greenly synthesize activated carbon nano-iron composite materials, the specific implementation steps are:

[0028] Clean the commercially available granular activated carbon with tap water after passing through a 40-mesh sieve. The cleaned activated carbon was soaked in 2 mL of 0.1 mol / L nitric acid solution per gram for 20 hours, suction filtered and quickly washed with deionized water until the filtrate was neutral, dried in an oven at 105°C for 10 hours, and stored for later use.

[0029] An appropriate amount of ferrous sulfate was dissolved in deionized water to obtain a 0.1 mol / L ferrous sulfate solution. Add 10mL ferrous sulfate solution per gram of pretreated activated carbon, stir magnetically for 2 hours, filter with suction and wash quickly with deionized water until no ferrous ions can be...

Embodiment 2

[0033] Clean the commercially available granular activated carbon with tap water after passing through a 50-mesh sieve. The cleaned activated carbon was soaked in 3 mL of 0.15 mol / L nitric acid solution per gram for 22 hours, suction filtered and quickly washed with deionized water until the filtrate was neutral, dried in an oven at 110°C for 12 hours, and stored for later use.

[0034] An appropriate amount of ferrous sulfate was dissolved in deionized water to obtain a 0.15 mol / L ferrous sulfate solution. Add 15mL of ferrous sulfate solution per gram of pretreated activated carbon, stir magnetically for 3 hours, filter with suction and wash quickly with deionized water until no ferrous ions can be detected in the filtrate, and dry in an oven at 110°C for 12 hours to obtain iron-loaded activated carbon. .

[0035] The collected candela leaves were cleaned with tap water, dried in an oven at 110° C. for 22 hours, crushed, and passed through a 100-mesh sieve to obtain candela ...

Embodiment 3

[0038] Clean the commercially available granular activated carbon with tap water after passing through a 60-mesh sieve. The cleaned activated carbon was soaked in 4 mL of 0.2 mol / L nitric acid solution per gram for 24 hours, suction filtered and quickly washed with deionized water until the filtrate was neutral, dried in an oven at 120°C for 14 hours, and stored for later use.

[0039] An appropriate amount of ferrous sulfate was dissolved in deionized water to obtain a 0.2 mol / L ferrous sulfate solution. Add 20mL of ferrous sulfate solution to each gram of pretreated activated carbon, stir magnetically for 4 hours, filter with suction and wash quickly with deionized water until no ferrous ions are detected in the filtrate, and dry in an oven at 120°C for 14 hours to obtain iron-loaded activated carbon. .

[0040] The collected candela leaves were cleaned with tap water, dried in an oven at 120° C. for 24 hours, crushed, and passed through a 100-mesh sieve to obtain candela l...

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 method for preparation of an activated carbon nano-iron composite material from kandelia candel leaf. The method adopts activated carbon as the carrier, uses polyphenol, flavone, caffeine and other bioactive reductants contained in a kandelia candel leaf extracted liquid to reduce ferrous ions into zero valent nano iron. The activated carbon nano-iron composite material combines the adsorption properties of activated carbon with the strong reducibility of nano-iron organically, and improves the adsorption and reduction properties of the composite material when appliedto printing and dyeing wastewater treatment. The method provided by the invention has no need of using potassium borohydride, sodium borohydride or other reducing agent, is low in production cost andhas small harm to the environment, the prepared activated carbon nano-iron composite material overcomes the disadvantages of easy inactivation and agglomeration of nano-iron in water, difficult recovery and recycling and the like currently, and the method has high economic and environmental benefits.

Description

technical field [0001] The invention relates to an activated carbon nano-iron composite material, in particular to a method for preparing the activated carbon nano-iron composite material from kandel leaves. Background technique [0002] Nanoscale zero-valent iron not only has the characteristics of zero-valent iron, but also has a larger specific surface area, stronger adsorption and higher reactivity than ordinary zero-valent iron, and is widely used in wastewater treatment and environmental pollution remediation. A common method for synthesizing nano-iron composites is the liquid-phase reduction method, using reducing agents such as sodium borohydride to reduce ferrous or ferric ions in aqueous solution to nano-zero-valent iron under the action of stabilizers and dispersants. The method has the characteristics of simple operation, rapid reaction, fast preparation and the like. However, sodium borohydride, organic solvents, dispersants and stabilizers in the preparation p...

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): C02F1/70C02F1/28B22F9/24B22F1/00B82Y40/00B82Y30/00C02F101/34C02F101/38
CPCB82Y30/00B82Y40/00C02F1/281C02F1/705B22F9/24C02F2101/38C02F2101/34B22F1/054
Inventor 黄明强林慧弘郭宇冰胡辉温翠瑶徐俊冯状状朱敏聪
Owner MINNAN NORMAL UNIV
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