Ag2CrO4-Cu3(BTC)2 supported biological activated carbon adsorbent and preparation method thereof

A bioactivated carbon and adsorbent technology, applied in water/sludge/sewage treatment, sterilization/microdynamic water/sewage treatment, water pollutants, etc., can solve the problem of poor degradation of organic pollutants and adsorption of heavy metal pollutants Poor performance and other problems, to achieve the effect of increasing the contact area, improving the adsorption efficiency, huge pores and specific surface area

Inactive Publication Date: 2019-12-03
厦门珉瑶贸易有限公司
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies in the prior art, the present invention provides a Ag2CrO4-Cu3(BTC)2 loaded biological activated carbon adsorbent and its preparation method, which not only solves the degradation of organic pollutants by biochar adsorbents or inorganic non-metallic adsorbents The bad problem is that the organic polymer adsorbent can only be used for organic pollutants in domestic sewage and organic waste, and has a good adsorption effect, and has poor adsorption for some heavy metal pollutants.

Method used

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  • Ag2CrO4-Cu3(BTC)2 supported biological activated carbon adsorbent and preparation method thereof
  • Ag2CrO4-Cu3(BTC)2 supported biological activated carbon adsorbent and preparation method thereof
  • Ag2CrO4-Cu3(BTC)2 supported biological activated carbon adsorbent and preparation method thereof

Examples

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Effect test

Embodiment 1

[0024] (1) Preparation of micron silver chromate: add 600mL of distilled water to a 1000mL reaction bottle, then weigh 20g of potassium dichromate and 22g of silver acetate in turn, then slowly add 30mL of acetic acid solution with a mass fraction of 36%, and mix well Place the reaction bottle in a constant temperature water bath, heat to 75°C, and stir at a constant speed for 4 hours. A large amount of reddish-brown precipitate is formed. After the reaction is completed, cool the reaction bottle to room temperature and filter out the solvent to obtain a brown solid mixture. Use 100mL of mass The fraction is 8% dilute hydrochloric acid solution and 2000mL distilled water to wash the brown solid mixture, and the washed solid mixture is placed in an oven to dry the moisture to obtain reddish brown solid silver chromate Ag 2 CrO 4 , then Ag 2 CrO 4 Put it in a high-energy planetary ball mill, add 400mL of absolute ethanol, the revolution speed of the ball mill is 250rpm, the ro...

Embodiment 2

[0028] (1) Preparation of micron silver chromate: add 600mL of distilled water to a 1000mL reaction bottle, then weigh 22g of potassium dichromate and 24g of silver acetate in turn, then slowly add 35mL of acetic acid solution with a mass fraction of 40%, and mix well Place the reaction bottle in a constant temperature water bath, heat to 80°C, and stir at a constant speed for 4 hours. A large amount of reddish-brown precipitate is formed. After the reaction is completed, the reaction bottle is cooled to room temperature, and the solvent is filtered out to obtain a brown solid mixture. Use 100mL mass The fraction is 10% dilute hydrochloric acid solution and 2500mL distilled water to wash the brown solid mixture, and the washed solid mixture is placed in an oven to dry the moisture to obtain reddish brown solid silver chromate Ag 2 CrO 4 , then Ag 2 CrO 4 Put it in a high-energy planetary ball mill, add 400mL of absolute ethanol, the revolution speed of the ball mill is 250rp...

Embodiment 3

[0032] (1) Preparation of micron silver chromate: add 600mL of distilled water to a 1000mL reaction bottle, then weigh 25g of potassium dichromate and 26g of silver acetate in turn, then slowly add 45mL of acetic acid solution with a mass fraction of 36%, stir well Place the reaction bottle in a constant temperature water bath, heat to 80°C, and stir at a constant speed for 4 hours. A large amount of reddish-brown precipitates are formed. After the reaction is completed, cool the reaction bottle to room temperature and filter out the solvent to obtain a brown solid mixture. Use 150 mL of The fraction is 8% dilute hydrochloric acid solution and 2000mL distilled water to wash the brown solid mixture, and the washed solid mixture is placed in an oven to dry the moisture to obtain reddish brown solid silver chromate Ag 2 CrO 4 , then Ag 2 CrO 4 Put it in a high-energy planetary ball mill, add 400mL of absolute ethanol, the revolution speed of the ball mill is 260rpm, the rotatio...

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Abstract

The invention relates to the technical field of water body purification and discloses an Ag2CrO4-Cu3(BTC)2 supported biological activated carbon adsorbent and a preparation method thereof. The adsorbent comprises raw materials in the formula as follows: Ag2CrO4, metal-organic framework Cu3(BTC)2, biological activated carbon and a silane coupling agent. According to the Ag2CrO4-Cu3(BTC)2 supportedbiological activated carbon adsorbent, metal-organic framework Cu3(BTC)2 complexes have two-dimensional six-element circular planar structure monoclinic system structures, layered structure and effective closed empty pore passage space are formed between the complexes, attachment and agglomeration of heavy metal ions such as Cd<2+> and Cu<2+> and organic molecules such as methylene blue and the like can be promoted, supporting and adsorption of the heavy metal ions and organic pollutants are realized, CrO4<2-> with strong oxidizing properties is produced by hydrolysis of Ag2CrO4, the organic pollutants are oxidized by CrO4<2-> with the strong oxidizing properties and degraded into small organic molecules so as to be adsorbed by biological activated carbon easily, Ag<+> enters cell membranes of bacteria or fungi in the water body to result in protein metabolism disorder and metabolism disturbance of the bacteria or fungi, and bacteriostatic and sterilization effects are achieved.

Description

technical field [0001] The present invention relates to the technical field of water body purification, specifically a kind of Ag 2 CrO 4 -Cu 3 (BTC) 2 Loaded biological activated carbon adsorbent and its preparation method. Background technique [0002] Water pollution is a phenomenon in which the use value of water is reduced or lost due to harmful chemical substances. When the pollutants entering the water body exceed the environmental capacity of the water body or the self-purification capacity of the water body, the water source is polluted, including industrial pollution sources, agricultural pollution sources and domestic pollution sources. Among them, inorganic pollutants such as acids, alkalis, inorganic salts, and heavy metals such as mercury, cadmium, copper, and arsenic, and organic pollutants include organic poisons such as benzene, dichloroethane, and organic dyes, polluting drinking water sources and landscape water in scenic spots , and even poison aquati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/30C02F1/72C02F1/50C02F101/30
CPCB01J20/0233B01J20/20B01J20/226B01J2220/46B01J2220/4806B01J2220/4812C02F1/50C02F1/72C02F2101/30C02F2101/308C02F2303/04
Inventor 马海龙郭臣唐阔海
Owner 厦门珉瑶贸易有限公司
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