Preparation method and application of adsorbent for efficiently removing heavy metal ions in wastewater based on electrolytic manganese residues

A technology of heavy metal ions and electrolysis of manganese slag, applied in chemical instruments and methods, adsorption water/sewage treatment, water pollutants, etc., can solve problems such as excessive ion content and heavy metal pollution, and achieve no secondary pollution, efficient and rapid removal , the effect of good application prospects

Inactive Publication Date: 2020-11-17
SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The surface layer of the main stream of the Huangpu River also has serious heavy metal pollution problems, and the Pb in its sediments 2+ Ion content exceeded 1 times

Method used

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  • Preparation method and application of adsorbent for efficiently removing heavy metal ions in wastewater based on electrolytic manganese residues
  • Preparation method and application of adsorbent for efficiently removing heavy metal ions in wastewater based on electrolytic manganese residues
  • Preparation method and application of adsorbent for efficiently removing heavy metal ions in wastewater based on electrolytic manganese residues

Examples

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Effect test

Embodiment 1

[0068] A method for preparing an adsorption material for efficiently removing heavy metal ions in wastewater based on electrolytic manganese slag, the steps are as follows:

[0069] (1) Get 7g electrolytic manganese slag and 3g calcite, mix, add 50ml deionized water, use magnet to stir, stir evenly for 1h, obtain electrolytic manganese slag and calcite mixed solution;

[0070] (2) Let the mixed solution of electrolytic manganese slag and calcite stand for 30min, transfer the mixed solution of electrolytic manganese slag and calcite to a 50ml centrifuge tube, centrifuge at 4000r / min for 10min, pour out the supernatant, leave the solid, and remove the solid Put it in an oven at 60°C, dry it for 24 hours, and take it out;

[0071] (3) Put the solid taken out in step (2) into a muffle furnace, and after calcination at 800° C. for 2 hours, cool to room temperature and take it out;

[0072] (4) Take the material obtained in step (3) and grind it, and pass through a 100-mesh sieve t...

Embodiment 2

[0111] A method for preparing an adsorption material for efficiently removing heavy metal ions in wastewater based on electrolytic manganese slag, the steps are as follows:

[0112] (1) Get 6g electrolytic manganese slag and 4g calcite, mix, add 50ml deionized water, use magnet to stir, stir evenly for 1h, obtain electrolytic manganese slag and calcite mixed solution;

[0113] (2) Let the mixed solution of electrolytic manganese slag and calcite stand for 30min, transfer the mixed solution of electrolytic manganese slag and calcite to a 50ml centrifuge tube, centrifuge at 4000r / min for 10min, pour out the supernatant, leave the solid, and remove the solid Put it in an oven at 60°C, dry it for 24 hours, and take it out;

[0114] (3) Put the solid taken out in step (2) into a muffle furnace, and after calcination at 800° C. for 2 hours, cool to room temperature and take it out;

[0115] (4) Take the material obtained in step (3) and grind it, and pass through a 100-mesh sieve t...

Embodiment 3

[0125] A method for preparing an adsorption material for efficiently removing heavy metal ions in wastewater based on electrolytic manganese slag, the steps are as follows:

[0126] (1) Get 13g electrolytic manganese slag and 7g calcite, mix, add 100ml deionized water, use magnet to stir, stir evenly for 1h, obtain electrolytic manganese slag and calcite mixed solution;

[0127] (2) Let the mixed solution of electrolytic manganese slag and calcite stand for 30min, transfer the mixed solution of electrolytic manganese slag and calcite to a 50ml centrifuge tube, centrifuge at 4000r / min for 10min, pour out the supernatant, leave the solid, and remove the solid Put it in an oven at 60°C, dry it for 24 hours, and take it out;

[0128] (3) Put the solid taken out in step (2) into a muffle furnace, and after calcination at 800° C. for 2 hours, cool to room temperature and take it out;

[0129] (4) Take the material obtained in step (3) and grind it, and pass through a 100-mesh sieve...

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Abstract

The invention relates to the technical field of environmental heavy metal removal, and particularly discloses a preparation method and application of an adsorbent for efficiently removing heavy metalions Cd (II) and Pb (II) in wastewater by utilizing electrolytic manganese residues. According to the method, the electrolytic manganese residues are used as a basic material, and are mixed with ore (at least one of calcite, serpentine and wollastonite); through modification, heavy metal ions in the wastewater are adsorbed by carbonate and silicate components of the mixture, the heavy metal ions in the wastewater are rapidly removed, and finally, efficient and rapid removal of Cd (II) and Pb (II) in the wastewater is achieved (in a prepared heavy metal solution, the removal rate of Cd (II) andPb (II) can reach 95%). The adsorbent has important environmental benefits and social value. The preparation method of the adsorbent is simple, convenient to operate, free of secondary pollution, good in adsorption effect and low in cost.

Description

technical field [0001] The invention relates to the technical field of environmental heavy metal removal, in particular to a preparation method and application of an adsorbent for efficiently removing heavy metal ions Cd(II) and Pb(II) in wastewater based on electrolytic manganese slag. Background technique [0002] Mining plays an irreplaceable role in economic development, however, it is accompanied by various environmental problems, among which the ecological environment pollution caused by mining wastewater occupies the first place. According to statistics, mining wastewater is one of the industries with the largest industrial wastewater discharge in my country. The annual discharge of mineral processing wastewater is about 200 million tons, accounting for 30% of the total wastewater discharged by the ferrous metal industry. Heavy metal ions, the main harmful substances in mining wastewater, will cause serious harm to the environment if they are discharged directly. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/12B01J20/30C02F1/28C02F101/20
CPCB01J20/12B01J20/06C02F1/281C02F2101/20
Inventor 李佳马梦雨杜冬云邵黎魏华宋小龙
Owner SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES
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