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Application of dealumination Y type zeolite in degrading organic pollutants in water under microwave induction

A technology of organic pollutants and zeolite, applied in water pollutants, water/sewage treatment, adsorption water/sewage treatment, etc., can solve problems such as pore structure damage, activated carbon surface fire, activated carbon structure damage, etc., to achieve the ability to absorb microwaves Weak, fast degradation rate, strong ability effect

Inactive Publication Date: 2013-01-09
GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, microwave energy greatly damages the structure of activated carbon and is only suitable for short-term treatment. Long-term microwave radiation will cause the surface of activated carbon to catch fire, and the pore structure will be destroyed after regeneration, and the specific surface area will be greatly reduced.
In addition, due to the strong microwave absorption ability of activated carbon itself, the penetration of microwave energy is shallow, and the size of the adsorption column is greatly limited.

Method used

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  • Application of dealumination Y type zeolite in degrading organic pollutants in water under microwave induction
  • Application of dealumination Y type zeolite in degrading organic pollutants in water under microwave induction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0016] Take 2.5 g SiO 2 / Al 2 o 3 The molar ratio is 60, the cation is H + The dealuminated Y-type zeolite was added to 200 mL of atrazine aqueous solution with a concentration of 40.70 μmol / L, and after equilibrating for 24 h, the concentration of atrazine in the solution after adsorption was measured to be 3.56 μmol / L, and suction filtered, The obtained solid was freeze-dried at -50 °C for 12 h, and 0.3 g of zeolite adsorbed with atrazine was weighed, and treated with 700 W microwave (2.450 GHz) for 4 min, and the atrazine adsorbed on it could be completely degraded.

[0017] The influence of zeolites with different cations on the treatment process:

[0018] Choose SiO2 2 / Al 2 o 3 The molar ratio is 5.1, and the cations are Na + , Ca 2+ , Mg 2+ , NH 4 + and H + Y-type zeolite. The endocrine disruptor atrazine was used as a model pollutant, and the operation method was as follows: 2.5 g of zeolite was added to 200 mL of atrazine aqueous solution with a concentra...

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Abstract

The invention discloses application of dealumination Y type zeolite in degrading organic pollutants in water under microwave induction. The dealumination Y type zeolite disclosed by the invention has high performance on enriching organic pollutants in the water mass; the zeolite has low performance on absorbing microwave, and meanwhile, the organic pollutants attached into the zeolite are fast in degrading rate under the effect of the microwave. The mol ratio of the SiO2 to the Al2O3 is of 60; the dealumination Y type zeolite with cation of H+ is applied to degrading the organic pollutants in the water under microwave induction, and the degrading rate of atrazine is up to 67.40nmol / min under the radiation of 700W microwave (2.450GHz) at the laboratory simulation condition.

Description

technical field [0001] The invention relates to the application of a dealuminated Y-type zeolite, in particular to the application of a dealuminated Y-type zeolite in microwave-induced degradation of organic pollutants in water. Background technique [0002] With the rapid development of industry and the continuous improvement of people's living standards, the serious pollution of the water environment by organic matter has become a common problem, and it affects the regional and global environmental quality along with the flow of surface water and groundwater. Some organic pollutants can be enriched through the food chain and eventually seriously affect human health. [0003] There are many ways to remove organic pollutants in water, but most of the traditional processes are limited due to low treatment efficiency, high cost, secondary pollution, and incomplete degradation of pollutants, which cannot meet the needs of pollution control. Especially for the treatment of high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/30C02F1/28
CPCC02F1/281B01J20/186C02F1/302C02F2101/30C02F2101/305C02F2101/306
Inventor 胡二丹程和发胡远安
Owner GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI