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Method for preparing spherical Cu/Fe biochar composite material by one-step method and application of spherical Cu/Fe biochar composite material

A composite material, biochar technology, applied in chemical instruments and methods, adsorbed water/sewage treatment, other chemical processes, etc., can solve problems such as the cost of raw materials for major secondary pollutants, achieve strong antioxidant capacity and reduce production costs. , the effect of improving utilization efficiency

Pending Publication Date: 2022-08-05
HAINAN NORMAL UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that a large number of secondary pollutants are formed and the cost of raw materials is extremely high in the process of preparing Cu / Fe bimetallic composites existing in the prior art, and to provide a one-step method for preparing spherical Cu / Fe biochar The method of composite material and the application of the prepared spherical Cu / Fe biochar composite material in water pollution remediation

Method used

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  • Method for preparing spherical Cu/Fe biochar composite material by one-step method and application of spherical Cu/Fe biochar composite material
  • Method for preparing spherical Cu/Fe biochar composite material by one-step method and application of spherical Cu/Fe biochar composite material
  • Method for preparing spherical Cu/Fe biochar composite material by one-step method and application of spherical Cu/Fe biochar composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Take 30 g of sodium algina and place it in a cup, add 1L distilled water to stir and dissolve, and make sodium alginate solution. Formation FeCL 3 · 6H 2 O material concentration is 0.3 mol / L; configure CUCL 2 The amount of material is 0.03mol / L, and feed 3 · 6H 2 O solution and cUCL 2 The solution is mixed with a hybrid solution. Drop the sodium alginate solution into the mixed solution, the cross-linking of the solution, and the rest of 24h, and the alginic acid -FE 3+ / Cu 2+ Gel, wash 6 times with distilled water, dry at 60 ° C in vacuum drying oven, and then dry 3h at 100 ° C. 3+ / Cu 2+ gel. Alotide-FE after drying 3+ / Cu 2+ After the gel is vacuumed for 15min, it is 20min at a high level of high -purity nitrogen at a rate of 200ml / min; then at the condition of 100ml / min nitrogen flow rate, at a heating rate of 5 ℃ / min to heating to 200 ° C, and then at 10 ° C / min The heating speed is heated to 900 ° C, and after 3H at 900 ° C, it is cooled to room temperature at a cool...

Embodiment 2

[0027] Take 30 g of sodium algina and place it in a cup, add 1L distilled water to stir and dissolve, and make sodium alginate solution. Formation FeCL 3 · 6H 2 O material concentration is 0.3 mol / L; configure CUCL 2 The quantity concentration of the material is 0.05mol / L. FECL will 3 · 6H 2 O solution and cUCL 2 The solution is mixed with a hybrid solution. Drop the sodium alginate solution into the mixed solution, the cross-linking of the solution, and the rest of 24h, and the alginic acid -FE 3+ / Cu 2+ Gel, wash 7 times with distilled water, dry at 60 ° C in vacuum drying oven, and then dry 3h at 100 ° C. 3+ / Cu 2+ gel. Alotide-FE after drying 3+ / Cu 2+ After the gel is vacuumed for 15min, it is 20min at a high level of high -purity nitrogen at a rate of 200ml / min; then at the condition of 100ml / min nitrogen flow rate, at a heating rate of 5 ℃ / min to heating to 200 ° C, and then at 10 ° C / min The heating speed is heated to 900 ° C, and after 3H at 900 ° C, it is cooled to room ...

Embodiment 3

[0031] Take 30 g of sodium algina and place it in a cup, add 1L distilled water to stir and dissolve, and make sodium alginate solution. Formation FeCL 3 · 6H 2 O material concentration is 0.3 mol / L; configure CUCL 2 The quantity concentration of the material is 0.1mol / L. FECL will 3 · 6H 2 O solution and cUCL 2 The solution is mixed with a hybrid solution. Drop the sodium alginate solution into the mixed solution, the cross-linking of the solution, and the rest of 24h, and the alginic acid -FE 3+ / Cu 2+ Gel, wash 8 times with distilled water, dry at 60 ° C in vacuum drying oven, and then dry 3h at 100 ° C. 3+ / Cu 2+ gel. Alotide-FE after drying 3+ / Cu 2+ After the gel is vacuumed for 15min, it is 20min at a high level of high -purity nitrogen at a rate of 200ml / min; then at the condition of 100ml / min nitrogen flow rate, at a heating rate of 5 ℃ / min to heating to 200 ° C, and then at 10 ° C / min The heating speed is heated to 900 ° C, and after 3H at 900 ° C, it is cooled to room t...

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Abstract

The invention discloses a method for preparing a spherical Cu / Fe biochar composite material through a one-step method. The invention also provides the spherical Cu / Fe biochar composite material prepared by the method and application of the spherical Cu / Fe biochar composite material in water pollution remediation. Through a one-step pyrolysis method, metal ions are fixed in a manner of crosslinking sodium alginate with Fe < 3 + > and Cu < 2 + >, and the spherical Cu / Fe biochar composite material formed through high-temperature pyrolysis has a relatively strong protection effect on loaded and fixed metals and has extremely strong oxidation resistance in air; in the preparation process, after SA-Fe < 3 + > / Cu < 2 + > gel is filtered, the residual metal solution can be reused, so that the utilization efficiency of metal ions is remarkably improved, and the preparation cost of the composite material is greatly reduced; cu is doped in the composite material, so that the utilization rate of Fe can be effectively improved; cu accounts for less than 0.5% of the total amount of the composite material, and the content of Cu is extremely low, so that the composite material does not cause secondary pollution to the environment in the pollutant adsorption process.

Description

Technical field [0001] The present invention involves the technical field of water pollution repair materials, especially the method and application of a one -step legal spherical CU / Fe biological carbon composite material. Background technique [0002] Zero -Price Iron is a widely used material in the restoration of water pollution. The carbon thermal method preparation zero -price iron is the current research hotspot. This method uses inorganic carbon as a reducing agent. At high temperature 3+ Or Fe 2+ Restoration into Fe is a method of economy and green. Biomas such as yellow pine, coconut shells, corn straw and other biomas are mixed with iron sources. Under the condition of nitrogen protection, high -temperature thermal solution can prepare zero -price iron biological carbon composite materials in one step, but the reduction rate of iron and salt in this method is relatively low. There are no reports of CU / Fe dual metal composite materials for carbon thermal law. The liquid...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/30C02F1/28
CPCB01J20/20B01J20/02C02F1/283Y02W10/37
Inventor 于长江贾振亚林强石云龙
Owner HAINAN NORMAL UNIVERSITY
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