Sulfuric acid modified attapulgite supported iron-copper-manganese catalyst as well as preparation method and application thereof
An attapulgite and sulfuric acid modification technology, which is applied in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc. problem, to achieve the effect of simple preparation process, good treatment effect and high stability
Active Publication Date: 2020-07-31
魏文霞
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Problems solved by technology
[0004]
In order to solve the problems that the Fenton method cannot meet the discharge standards in the waste paper and papermaking wastewater treatment project, the generation of iron sludge, the narrow pH range, and the low catalytic efficiency of conventional catalysts, etc., the present invention develops a new type of heterogeneous Fenton three-way catalyst, Acid-modified attapulgite-supported Fe-Cu-Mn heterogeneous catalyst for H
2
o
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Advanced treatment of waste paper and papermaking wastewater
Method used
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Embodiment 1
[0027] The preparation method of sulfuric acid modified attapulgite loaded iron-copper-manganese catalyst (heterogeneous Fenton three-way catalyst) of the present embodiment comprises the following steps:
[0028] 1) Acid modification treatment of attapulgite
[0029] Take 50g of attapulgite in a 1L beaker, rinse with distilled water until the washing liquid is free of impurities, filter the attapulgite, dry the washed attapulgite in an oven at 105°C, and dry the attapulgite for later use. Take 10g of attapulgite after washing and drying in a 250mL conical cup, add 100mL of sulfuric acid solution with a volume fraction of 40%, put it in a shaking table and shake and soak for 10h under the conditions of 30°C and 200r / min. After the completion, the attapulgite was washed with distilled water until the pH of the attapulgite was 6-7. After filtering, the attapulgite was dried in an oven at 105° C. for 12 hours to obtain the attapulgite carrier.
[0030] 2) Attapulgite loaded iron...
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The invention discloses a sulfuric acid modified attapulgite supported iron-copper-manganese catalyst as well as a preparation method and application thereof, and belongs to the technical field of waste paper papermaking wastewater treatment. The method comprises the following steps: cleaning and drying attapulgite; adding a sulfuric acid solution with the volume fraction of 40% in a manner that 8-10ml of the sulfuric acid solution is added into each gram of the attapulgite; oscillating and soaking; washing the attapulgite until the pH value is 6-7 after the oscillation and soaking are finished, and drying to obtain a sulfuric acid modified attapulgite carrier; adding 5% of FeSO4, 2.5% of CuSO4 and 2.5% of MnSO4 into the sulfuric acid modified attapulgite, and mixing to obtain an active component mixed solution; oscillating and soaking, washing off unloaded active components on the surface, drying, and calcining for 3 hours at 500 DEG C in a nitrogen atmosphere, so as to obtain the sulfuric acid modified attapulgite supported iron-copper-manganese catalyst. The preparation method is simple, and the raw material attapulgite is wide in source and low in price; the prepared catalyst is high in catalytic efficiency; the catalyst has the advantages of wide pH value range, no pollution, high stability and long service lifetime.
Description
technical field [0001] The invention relates to the technical field of waste paper and papermaking wastewater treatment, in particular to a sulfuric acid-modified attapulgite-supported iron-copper-manganese catalyst, a preparation method and an application. Background technique [0002] The papermaking industry has a large amount of wastewater discharge, and the waste paper pulping industry accounts for more than 50% of the paper industry. Therefore, waste paper and papermaking wastewater is the main source of papermaking industry wastewater. Waste paper and papermaking wastewater has a wide variety of pollutants, high concentration of organic matter, and most of them are aromatic compounds, which have the characteristics of poor biochemical properties and difficult to degrade. In actual engineering treatment, after biochemical treatment, the discharge is often not up to standard, and advanced treatment is required. The Fenton method is often used in the advanced treatment o...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B01J27/055B01J37/02B01J37/08C02F9/04C02F101/20C02F103/28
CPCB01J27/055B01J37/0201B01J37/08B01J23/002C02F1/725C02F1/722C02F1/66B01J2523/00C02F2101/203C02F2101/20C02F2103/28C02F2305/026C02F2209/08C02F2209/14B01J2523/17B01J2523/72B01J2523/842Y02W10/37
Inventor 魏文霞刘远园张泽谢承中刘毅高鹏云李小丹
Owner 魏文霞