Adsorption-catalyst for treating phenol containing waste-water, preparation method and application thereof

A catalyst and phenol technology, which is applied in the field of multi-component adsorption-catalyst preparation, can solve the problems of large loss rate of activated carbon adsorption capacity, increased treatment cost, activated carbon loss, etc., and achieves low cost, industrial water saving, and equipment footprint. small effect

Inactive Publication Date: 2009-08-19
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the thermal regeneration process, the activated carbon after adsorption saturation has to be treated at a high temperature of 800-850°C, which consumes a lot of energy; at the same time, the high-temperature operation makes the adsorption capacity loss rate of activated carbon large, and the adsorption capacity loss of activated carbon is 5-15% every time regeneration is performed; In addition, high-temperature operation also prevents activated carbon from being regenerated in situ, requiring a specific regeneration device, thereby increasing the treatment cost and causing a certain amount of activated carbon loss during transportation; finally, the pollutants desorbed during the heating process need post-treatment, Complex process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0019] Preparation of Cu4Zn2 / AC catalyst:

[0020] Take 9g of zinc nitrate and add 100ml of 0.62mol / l copper nitrate solution to prepare an impregnation solution, and the specific surface area of ​​100 grams of 40-60 mesh is 800m 2 Activated carbon particles per gram were poured into the impregnating solution and stirred, left at room temperature for 4 hours, dried at 110°C for 6 hours, then calcined at 300°C under the protection of argon for 12 hours, and naturally cooled to room temperature to prepare catalyst B. The weight of metal components is: Cu 4%, Zn 2%, activated carbon 94%, marked as Cu4Zn2 / AC.

[0021] Cu4Zn2 / AC Adsorption-Catalyst Use:

[0022] 50ml of organic wastewater containing 1500ppm phenol passes through the adsorption column equipped with 0.5g Cu4Zn2 / AC adsorption-catalyst, discharges the purified waste water after the adsorption finishes, and dries the Cu4Zn2 / AC adsorption-catalyst of adsorbed phenol at normal temperature; AC adsorption - oxidizing gas ...

Embodiment 3

[0025] Preparation of Cu5Ce1 / AC catalyst:

[0026] Take 3.1g of cerium nitrate and add 100ml of 0.78mol / l copper nitrate solution to prepare an impregnation solution, and the specific surface area of ​​100 grams of 40-60 mesh is 800m 2 The activated carbon particles per gram were poured into the impregnation solution and stirred, left at room temperature for 6 hours, dried at 110°C for 12 hours, then calcined at 250°C under the protection of argon for 24 hours, and naturally cooled to room temperature to prepare catalyst C. The weight of metal components is: Cu 5%, Ce 1%, activated carbon 94%, marked as Cu5Ce1 / AC.

[0027] Cu5Ce1 / AC Adsorption-Catalyst Use:

[0028] 50ml of organic waste water containing 1500ppm phenol passes through the adsorption column that 0.5gCu5Ce1 / AC adsorption-catalyst is housed, discharges the purified waste water after the adsorption finishes, and the Cu5Ce1 / AC adsorption-catalyst of drying adsorption phenol at normal temperature; AC adsorption - o...

Embodiment 4

[0031] Preparation of Cu1Ce5 / AC catalyst:

[0032] Take 15.5g of cerium nitrate and add 100ml of 0.16mol / l copper nitrate solution to prepare an impregnation solution, and the specific surface area of ​​100 grams of 40-60 mesh is 800m 2 The activated carbon particles per gram were poured into the impregnation solution and stirred, left at room temperature for 6 hours, dried at 110°C for 12 hours, then calcined at 250°C under the protection of argon for 24 hours, and naturally cooled to room temperature to prepare catalyst D. The weight of metal components is: Cu 1%, Ce 5%, activated carbon 94%, marked as Cu1Ce5 / AC.

[0033] Cu1Ce5 / AC Adsorption-Catalyst Use:

[0034] 50ml of organic waste water containing 500ppm phenol passes through the adsorption column that 0.5g Cu1Ce5 / AC adsorption-catalyst is housed, discharges the purified waste water after the adsorption finishes, and the Cu1Ce5 / AC adsorption-catalyst of drying adsorption phenol at normal temperature; AC adsorption - ...

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PUM

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Abstract

An adsorption-catalyst for treating phenol-containing wastewater, characterized in that Cu is used as an active component, K, Zn or Ce is used as an auxiliary component, activated carbon is used as a carrier, and its weight percentage is composed of: Cu1%-5%, auxiliary components 1%-5%, activated carbon 85%-98%, and the surface area of ​​activated carbon is 500-1500m2 / g. Prepared by equal volume co-impregnation method. The phenol-containing wastewater is passed through the adsorption-catalyst with activated carbon as the carrier. After the adsorption is completed, it is dried at room temperature, and the oxidizing gas is passed through to react. The adsorption-catalyst of the present invention has the advantages of good adsorption performance, mild catalytic oxidation conditions, low energy consumption, simple process, simple operation, in-situ catalytic oxidation, and no secondary pollution.

Description

technical field [0001] The invention belongs to an adsorption-catalyst and its application method, in particular to a preparation and application method of a multi-component adsorption-catalyst with transition metal as the main active component. Background technique [0002] Phenol-containing wastewater comes from a wide variety of sources. Coking plants, oil refineries, petrochemical plants, gas generating stations, plastic plants, resin plants, insulating material plants, wood preservative plants, pharmaceutical plants, and synthetic fiber plants all produce wastewater containing phenol. The importance of phenols in water pollution is attributed to their extremely high toxicity to aquatic life and difficulty in biodegradation. All countries in the world strictly limit the content of phenol in the environment. my country stipulates that the maximum allowable concentration distribution of volatile phenols in water bodies is: 0.002mg / l for drinking water, 1.0mg / l for agricu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/78B01J23/80B01J23/83B01J37/02C02F1/28C02F101/30
Inventor 刘振宇雷智平杨建丽刘平光
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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