Method for photodegradation of organic pollutants in water by black carbon

A technology of organic pollutants and photodegradation, applied in the field of water pollution degradation, can solve the problems of unstable chemical properties, non-pollutants, low catalytic efficiency, etc., and achieve the effects of mild reaction conditions, simple reaction operation, and important environmental significance

Active Publication Date: 2019-07-12
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Commonly used photodegradation catalysts are TiO 2 , CdS and ZnO, etc., due to the unstable chemical properties of CdS and ZnO, photodissolution will occur at the same time as photocatalysis, and the dissolved metal ions have certain biological toxicity, so it is not a good photocatalyst for degrading pollutants in water
TiO 2 It is a catalyst for photocatalytic decomposition of water to produce hydrogen and photocatalytic degradation of organic matter. However, it needs to use noble metal support during photocatalytic degradation, which leads to problems such as high cost and low catalytic efficiency under sunlight.

Method used

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  • Method for photodegradation of organic pollutants in water by black carbon
  • Method for photodegradation of organic pollutants in water by black carbon
  • Method for photodegradation of organic pollutants in water by black carbon

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Fill the chromatographically pure n-hexane into the fuel pool, ignite the n-hexane through the wick extending into the fuel pool to generate flame, and enter the combustion chamber through precise control N 2 And O 2 The content controls the combustion-oxygen ratio of the n-hexane combustion process. In this experiment, the combustion-oxygen ratio is controlled at 0.18. Collect the black carbon with a 10 cm * 10 cm quartz plate 4 cm above the flame, scrape the collected black carbon, and place it in a sealed reagent bottle for later use.

[0032] The black carbon prepared above is added to a temperature-controlled transparent photochemical reactor containing 2,4-dichlorophenol aqueous solution. Among them, the black carbon concentration is 0.33mg / ml, and the initial concentration of 2,4-dichlorophenol is 5*10 -5 M, then sonicate the photoreactor for 5 minutes so that the suspension is evenly mixed. After the end of the ultrasound, the reactor was stirred (20 revolutions / mi...

Embodiment 2

[0034] Fill the chromatographically pure n-hexane into the fuel pool, ignite the n-hexane through the wick extending into the fuel pool to generate flame, and enter the combustion chamber through precise control N 2 And O 2 The content controls the combustion-oxygen ratio of the n-hexane combustion process. In this experiment, the combustion-oxygen ratio is controlled at 0.18. Collect the black carbon with a 10 cm * 10 cm quartz plate 4 cm above the flame, scrape the collected black carbon, and place it in a sealed reagent bottle for later use.

[0035] The black carbon prepared above is added to a temperature-controlled transparent photochemical reactor containing a methyl orange aqueous solution. Among them, the black carbon concentration is 0.33mg / ml, and the initial concentration of methyl orange is 4*10 -5 M, then sonicate the photoreactor for 5 minutes so that the suspension is evenly mixed. After the end of the ultrasound, the reactor was stirred (20 revolutions / min) under...

Embodiment 3

[0037] Fill the chromatographically pure n-hexane into the fuel pool, ignite the n-hexane through the wick extending into the fuel pool to generate flame, and enter the combustion chamber through precise control N 2 And O 2 The content controls the combustion-oxygen ratio of the n-hexane combustion process. In this experiment, the combustion-oxygen ratio is controlled at 0.18. Collect the black carbon with a 10 cm * 10 cm quartz plate 4 cm above the flame, scrape the collected black carbon, and place it in a sealed reagent bottle for later use.

[0038] The black carbon prepared above is added to a temperature-controlled transparent photochemical reactor containing a bisphenol A aqueous solution. Among them, the black carbon concentration is 0.33mg / ml, and the initial concentration of bisphenol A is 2*10 -5 M, then sonicate the photoreactor for 5 minutes so that the suspension is uniformly mixed. After the end of the ultrasound, the reactor was stirred (20 revolutions / min) under ...

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Abstract

The invention provides a method for photodegradation of organic pollutants in water by black carbon. The method comprises the following steps: 1), burning C6-C20 hydrocarbon compounds under the condition of controllable combustion oxygen ratio to prepare black carbon; 2), adding a prepared aqueous solution of the black carbon and water organic pollutants to a photo reactor to form a reaction system, and stirring the reaction system under simulated sunlight irradiation to realize degradation of the water organic pollutants. Compared with the prior art, the method has the main advantages that preparation of the black carbon is cheap and simple, photodegradation reaction conditions are mild, reaction operation is simple, universality is wide, various organic pollutants in water can be degraded, and thus, the method has great environmental significance.

Description

Technical field [0001] The invention belongs to the technical field of water pollution degradation, and specifically relates to a method for using black carbon light to degrade organic pollutants in a water body. Background technique [0002] With the continuous improvement of people's living standards and the great development of industry, the pollution of water bodies worldwide is increasing. Especially the discharge of organic matter from major mining plants has caused the pollution of organic matter in the water body. Long-term drinking of contaminated water can cause tumors, cancer, cardiovascular and cerebrovascular diseases, stones, and teratogenicity. Therefore, the degradation of organic pollutants in water bodies has very important environmental significance. In recent years, the photodegradation of organic matter has received extensive attention due to its environmental protection and other characteristics. [0003] The commonly used photodegradation catalyst is TiO 2...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/30B01J31/02C02F101/30C02F101/34C02F101/36C02F101/38
CPCB01J31/02B01J35/004C02F1/30C02F2101/30C02F2101/308C02F2101/34C02F2101/345C02F2101/36C02F2101/38C02F2101/40C02F2305/10
Inventor 赵进才李萌陈春城马万红籍宏伟盛桦
Owner INST OF CHEM CHINESE ACAD OF SCI
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