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Iron-manganese-sulfur ternary micron material as well as preparation method and application thereof

An iron-manganese and iron source technology, applied in chemical instruments and methods, manganese compounds, other chemical processes, etc., can solve the problems of low heavy metal adsorption, prone to agglomeration, and ternary nanomaterial agglomeration, etc., to change the chemical state of Fe , Low production cost, and the effect of improving adsorption capacity

Inactive Publication Date: 2020-12-29
HUBEI FORBON TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the prior art, the present invention solves the problem that the existing Fe-Mn and Fe-S binary nanomaterials are prone to agglomeration, and the adsorption capacity of heavy metals is low, and the needle-shaped Fe-Mn-S ternary nanomaterials are porous The preparation method of biochar composite materials, the prepared ternary nanomaterials also have agglomeration phenomenon

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] ① First add 0.5L of water to the mixing vessel, then add 380g of iron oxide, 300g of manganese dioxide, and 300g of sulfur into the mixer in sequence. The iron oxide and manganese dioxide are both 200 mesh, and the sulfur mesh is 200 Purpose; Stir 20min with the stirring speed of 50rpm, then add 15g sodium lignosulfonate, the mixture is stirred with the stirring speed of 100rpm 30min, so that iron oxide, manganese dioxide, sulfur are completely dispersed in water;

[0028] ②Add 5g of xanthan gum to the mixed solution in step ①, and gradually add it to adjust the viscosity to prepare a ternary hydration solution of iron, manganese and sulfur;

[0029] ③Freeze-dry the iron-manganese-sulfur ternary hydration solution obtained in step ② at minus 40°C for 6 hours, pulverize it in a pulverizer to an average of 200 meshes, and then calcinate it at 400°C for 2 hours to obtain the iron-manganese-sulfur ternary hydration solution. compound;

[0030] ④ wet-grinding the iron-manga...

Embodiment 2

[0033] ① First add 0.5L of water to the mixing vessel, then add 360g of iron oxide, 330g of manganese dioxide, and 285g of sulfur into the mixer in sequence. The iron oxide and manganese dioxide are both 50 mesh, and the sulfur mesh is 500 Purpose, stir 20min with the stirring speed of 50rpm, then add 20g sodium lignosulfonate, the mixture is stirred with the stirring speed of 200rpm 30min, so that iron oxide, manganese dioxide, sulfur are completely dispersed in water;

[0034] ②Add 5g of xanthan gum to the mixed solution in step ①, and gradually add it to adjust the viscosity to prepare a ternary hydration solution of iron, manganese and sulfur;

[0035] ③Freeze-dry the iron-manganese-sulfur ternary hydration solution prepared in step ② at minus 50°C for 3 hours, pulverize it in a pulverizer to an average of 200 meshes, and then calcinate it at a high temperature of 500°C for 1 hour to obtain the iron-manganese-sulfur ternary hydration solution. compound;

[0036] ④ wet-gri...

Embodiment 3

[0039] ①First add 0.5L of water to the mixing vessel, then add 360g of iron oxide, 325g of manganese dioxide, and 290g of sulfur into the mixer in sequence. The iron oxide and manganese dioxide are both 100 mesh, and the sulfur mesh is 300 Purpose, stir 15min with the stirring speed of 60rpm, then add 15g naphthalenesulfonic acid formaldehyde condensate, the mixture is stirred with the stirring speed of 100rpm 40min, so that iron oxide, manganese dioxide, sulfur are completely dispersed in water;

[0040] ② Add 10g of xanthan gum to the mixed solution in step ①, and gradually add it to adjust the viscosity to prepare a ternary hydration solution of iron, manganese and sulfur;

[0041] ③Freeze-dry the ferromanganese-sulfur ternary hydration solution obtained in step ② at minus 45°C for 4 hours, pulverize it to an average of 250 meshes in a pulverizer, and then calcinate it at 450°C for 1.5 hours to obtain the iron-manganese-sulfur ternary hydration solution. Yuan compound;

[...

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Abstract

The invention relates to an iron-manganese-sulfur ternary micron material as well as a preparation method and application thereof. The iron-manganese-sulfur ternary micron material consists of the following components in percentage by weight: 20-60 percent of iron source, 10-50 percent of manganese source, 5-35 percent of sulfur, 1-5 percent of dispersing agent and 0.5-3 percent of thickening agent. According to the preparation method, the defect that agglomeration is likely to happen in the traditional Fe-Mn and Fe-S nano composite material preparation process is overcome, and more importantly, the problem that the heavy metal adsorption amount is low due to agglomeration of the Fe-Mn and Fe-S nano composite material is solved. The S element is introduced into the Fe-Mn-containing composite material, so that the chemical state of Fe can be effectively changed, and meanwhile, the cation exchange capacity of the Fe-Mn-S composition is stronger due to a synergistic effect. The prepared iron-manganese-sulfur ternary micron material is stable in performance, capable of being stored for a long time and convenient to use. The iron-manganese-sulfur ternary micron material is widely applied to heavy metal treatment.

Description

technical field [0001] The invention relates to an iron-manganese-sulfur ternary micron material, a preparation method and application thereof, and is applied in heavy metals. Background technique [0002] At present, Fe-Mn binary nanomaterials widely exist in the natural environment, while iron sulfides such as FeS and FeS 2 It has a high affinity for heavy metals in sewage, so it is considered to be an excellent material for the adsorption of heavy metals in sewage. Both Fe-Mn and Fe-S binary nanomaterials have unique physical and chemical properties, but Fe-Mn and Fe-S binary nanomaterials are easy to agglomerate during the preparation process, and the shape size and specific surface area are uncontrollable, which seriously limits their use. Play an effective role in the treatment of heavy metals in the environment. [0003] The prior art patent CN109225134A describes a method for preparing acicular Fe-Mn-S ternary nanomaterial-loaded porous biochar composite materials....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G45/00B01J20/02B01J20/30C02F1/28C02F101/10C02F101/20C02F101/22
CPCC01G45/006B01J20/0229B01J20/0222B01J20/0285C02F1/281C01P2004/61C01P2006/12C02F2101/103C02F2101/20C02F2101/22
Inventor 王仁宗汪志操素芬
Owner HUBEI FORBON TECH
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