VOC catalyst characterized by ordered arrangement of composite metal oxide and ferroferric oxide, and preparation method thereof

A technology of ferroferric oxide and composite metals, which is applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., and can solve the problems of large space and low resource utilization , to achieve the effects of simple process flow, reduced operating costs, and mild reaction conditions

Active Publication Date: 2019-11-05
SHANGHAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The resource treatment of electroplating sludge is mainly divided into three types: solution leaching and enrichment technology, ferrite treatment, and compost biological treatment. rate is also lower than the former two

Method used

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  • VOC catalyst characterized by ordered arrangement of composite metal oxide and ferroferric oxide, and preparation method thereof
  • VOC catalyst characterized by ordered arrangement of composite metal oxide and ferroferric oxide, and preparation method thereof

Examples

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Embodiment 1

[0024] A method for synthesizing composite metal oxides using chromium-containing electroplating sludge, wherein the content of Cr element is 25.40g / 100g, and the content of iron element in iron-containing electroplating sludge is 23.16 g / 100g, comprising the following steps:

[0025] a. Prepare 0.2mol / L glacial acetic acid solution and 0.1mol / L citric acid solution, mix these two solutions 1:1, mix to make reagent a, and then prepare 0.025mol / L potassium sodium tartrate solution and 0.01mol / L The ethylenediaminetetraacetic acid solution was mixed according to the ratio of 1:2 to make reagent b, and then absolute ethanol was added to make the structure forming agent.

[0026] b. Take 5g of chromium-containing electroplating sludge and mix it with 50ml of structure-forming agent to prepare composite metal oxide embryo body.

[0027] c. Weigh 7.5g of iron-containing electroplating sludge, and prepare 0.125mol / L sodium carbonate solution, 0.05mol / L sodium sulfite solution, mix th...

Embodiment 2

[0030] A method for synthesizing composite metal oxides using nickel-containing electroplating sludge, wherein the content of Ni element is 24.18g / 100g, and the iron content of iron-containing electroplating sludge is 23.16 g / 100g, comprising the following steps:

[0031] a. Prepare 0.25mol / L glacial acetic acid solution and 0.1mol / L citric acid solution, mix these two solutions 1:1.5, mix to make reagent a, and then prepare 0.04mol / L potassium sodium tartrate solution and 0.02mol / L The ethylenediaminetetraacetic acid solution was mixed according to the ratio of 1:1 to make reagent b, and then absolute ethanol was added to make the structure forming agent.

[0032] b. Take 10g of copper-containing electroplating sludge and mix it with 100ml of structure-forming agent to prepare composite metal oxide embryo body.

[0033] c. Weigh 15g of iron-containing electroplating sludge, and prepare 0.75mol / L sodium carbonate solution, 0.05mol / L sodium sulfite solution, mix the above two s...

Embodiment 3

[0036] A method for synthesizing composite metal oxides using copper-containing electroplating sludge, wherein the content of Cu element is 39.84g / 100g, and the iron content of iron-containing electroplating sludge is 23.16 g / 100g, comprising the following steps:

[0037] a. Prepare 0.2mol / L glacial acetic acid solution and 0.1mol / L citric acid solution, mix these two solutions 1:1, mix to make reagent a, and then prepare 0.025mol / L potassium sodium tartrate solution and 0.01mol / L The ethylenediaminetetraacetic acid solution was mixed according to the ratio of 1:1 to make reagent b, and then absolute ethanol was added to make the structure forming agent.

[0038] b. Take 5g of copper-containing electroplating sludge and mix it with 50ml of structure forming agent to prepare composite metal oxide embryo body.

[0039] c. Weigh 7.5g of iron-containing electroplating sludge, and prepare 0.1mol / L sodium carbonate solution and 0.05mol / L sodium sulfite solution, and mix the above tw...

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Abstract

The invention discloses a VOC catalyst characterized by ordered arrangement of composite metal oxide and a ferroferric oxide, and a preparation method thereof. Electroplating sludge is used as a synthesis material, the temperature and the pressure are changed in an acidic environment, and the electroplating sludge is calcined in an air and nitrogen alternate-changing atmosphere to make metal elements in the electroplating sludge dissolved in a solution and fully reacted in order to form the stable composite metal oxide and ferroferric oxide orderly-arranged nanomaterial. Compared with traditional electroplating sludge treatment methods, the method of the invention has the following advantages: the reduction is obvious, and the leaching toxicity is extremely low; the calcination time is short, and the temperature is low, so much energy consumption is saved; the consumption of metal salt is reduced by nearly half; the reaction is carried out under acidic conditions, so metal ions which are easily leached and lost can be sufficiently reacted; and the process flow is simple, and the reaction conditions are mild, so the method used as a dangerous solid waste treatment technology has thecharacteristics of ensuring of harmlessness, obvious reduction, maximal utilization of the resources in the electroplating sludge, and reduction the running cost of enterprises.

Description

technical field [0001] The invention relates to a VOC catalyst characterized by orderly arrangement of composite metal oxides and ferric oxide synthesized by electroplating sludge and a preparation method thereof, belonging to the technical field of solid waste control. Background technique [0002] Electroplating sludge is the discharge generated from the treatment of wastewater containing heavy metals in the electroplating production process. The electroplating and electronics industries produce a large amount of Cu, Ni, Cr, and Fe. Due to the differences in the electroplating production process, the type of plated parts, and the wastewater treatment process, the composition is very complicated. [0003] As the final state of electroplating wastewater, electroplating sludge is much less than wastewater, but because heavy metals such as Cu, Ni, Cr, Zn, Fe in wastewater are transferred and enriched into sludge, in a certain sense According to the above, electroplating sludg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755B01J23/86B01J35/02C02F11/10C02F11/00B01D53/86B01D53/72B01D53/44
CPCB01J35/023B01J23/862B01J23/755C02F11/008C02F11/10B01D53/864B01D53/8687B01D2257/708C02F2103/16
Inventor 张佳黄文忠顾焱崔耀文吴健忠钱光人周吉峙
Owner SHANGHAI UNIV
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