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Ferric oxide supported activated carbon as well as synthesis method and application thereof

A technology of iron oxides and synthesis methods, applied in chemical instruments and methods, other chemical processes, biological water/sewage treatment, etc., can solve the problem that pathogenic microorganisms in tap water are not effectively controlled, and achieve the suppression of disinfection by-products Re-growth with pathogenic microorganisms, large specific surface area, and developed biofilm structure

Active Publication Date: 2019-08-02
GUANGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although most of the microorganisms in the factory tap water have been inactivated after chlorine disinfection, the pathogenic microorganisms in the faucet water have not been effectively controlled after being distributed through the pipeline network, and disinfection by-products will continue to be produced

Method used

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  • Ferric oxide supported activated carbon as well as synthesis method and application thereof
  • Ferric oxide supported activated carbon as well as synthesis method and application thereof
  • Ferric oxide supported activated carbon as well as synthesis method and application thereof

Examples

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Embodiment 1

[0043] The synthetic method of the coconut shell activated carbon Fe / CAC that iron oxide load of the present invention comprises the following steps:

[0044] (1) Immerse coconut shell activated carbon (CAC) with an average particle size of 1.2mm in 100g / L sodium hydroxide solution (NaOH) for 1 hour;

[0045] (2) Take out the above-mentioned coconut shell activated carbon and wash it with deionized water, then immerse it in an aqueous solution of nitric acid (HNO3) with a volume concentration of 10%. 3 )1 hour;

[0046] (3) Take out the coconut shell activated carbon and wash it with deionized water for 5 times repeatedly, and dry it in an oven at 160°C for later use.

[0047] (4) ferric chloride hexahydrate (FeCl 3 ·6H 2 O) be dissolved in deionized water to form a concentration of solution A of 20g / L;

[0048] (5) Mix solution A with pretreated coconut shell activated carbon at a ratio of 3mL:1.0g, ultrasonically treat with 300W power for 1 hour, and heat in a water bath...

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Abstract

The invention belongs to the field of water treatment and discloses ferric oxide supported activated carbon as well as a synthesis method and an application thereof. The synthesis method comprises steps as follows: the activated carbon is soaked in a water solution of a ferric source, ultrasonic treatment is performed, then, evaporation to dryness and roasting are performed, and the ferric oxide supported activated carbon is obtained. By means of the synthesis method, Fe supporting, Fe-O-C bond production and formation of filamentary structures in pores are brought. The activated carbon has alarge specific surface area, organic pollutants are more sufficiently adsorbed in the pores of the activated carbon, the extracellular electron transfer rate of attached-growth microorganisms is increased, and formation of biomembranes is promoted. The activated carbon can reduce disinfection byproducts and pathogenic microorganisms in finished water and also has the function of inhibiting generation of disinfection byproducts and regrowth of the pathogenic microorganisms in follow-up pipeline networks of tap water.

Description

technical field [0001] The invention belongs to the field of water treatment, in particular to an activated carbon loaded with iron oxides, a synthesis method and application thereof. Background technique [0002] In recent years, microbial problems in drinking water pipe networks have gradually attracted social attention. Generally speaking, compared with the factory water produced by waterworks, the tap water of residential users has significantly worse water quality due to the regrowth of microorganisms in the pipe network. In order to reduce this hazard, chlorine disinfectant was introduced in the 20th century because of its low cost and constant residual chlorine concentration in the entire pipeline network for continuous sterilization. However, chlorine disinfectants can react with natural organic matter in water to produce a series of harmful disinfection by-products such as trihalomethanes and haloacetic acids, which are carcinogenic to humans. [0003] Recently, o...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/30C02F1/28C02F3/34
CPCB01J20/20B01J20/06C02F1/283C02F3/34
Inventor 胡春邢学辞吕来高耀文
Owner GUANGZHOU UNIVERSITY
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