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Method for preparing two-dimensional alloy/carbon composite nano-material by utilizing electroplating and organic sludge

A technology of organic sludge and nanomaterials, applied in nanotechnology for materials and surface science, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve the limited effect of mixed sedimentation, metal components and organic components Difficult to achieve solid-liquid separation and other problems, to achieve high catalytic activity and economic benefits, high atomic utilization, and cost-saving effects

Active Publication Date: 2020-12-01
佛山经纬纳科环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the mixed precipitation effect of this method is limited, and it is difficult to achieve solid-liquid separation and effective utilization of some metal components and organic components.

Method used

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  • Method for preparing two-dimensional alloy/carbon composite nano-material by utilizing electroplating and organic sludge
  • Method for preparing two-dimensional alloy/carbon composite nano-material by utilizing electroplating and organic sludge
  • Method for preparing two-dimensional alloy/carbon composite nano-material by utilizing electroplating and organic sludge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) 100 parts by weight of untreated electroplating sludge (mass fraction of heavy metals: 5.66% chromium, 7.15% iron, 3.71% nickel, 1.99% copper, 0.06% cobalt), 100% by weight After mixing 300 parts by weight of undried industrial organic sludge and 300 parts by weight of NaCl with a particle size of 200 mesh or less, mechanically stir at a speed of 1000 rpm at a constant temperature of 80°C until the water is evaporated to dryness, and the metal-containing component / organic carbon group is deposited. Part / NaCl precursor.

[0041] (2) Grinding the precursor obtained in step (1) into powder, placing it in a tube furnace, and roasting it under the atmosphere of hydrogen / argon gas mixture (hydrogen gas fraction is 10%) at 700°C for 2h to obtain alloy nanoparticles / Carbon@NaCl composite powder.

[0042] (3) After cooling the composite powder obtained in step (2), add it into 300 parts by weight of hot water (80° C.) and stir for 20 minutes to dissolve the NaCl template....

Embodiment 2

[0046] (1) 100 parts by weight of untreated electroplating sludge electroplating sludge (mass fraction of contained heavy metals: 5.34% chromium, 6.25% iron, 4.56% zinc, 3.35% nickel, 1.37% copper) , 50 parts by weight of undried industrial organic sludge, 400 parts by weight of Na with a particle size below 200 mesh 2 CO 3 After mixing, mechanically stir at a speed of 1500rpm at a constant temperature of 60°C until the water is evaporated to dryness, and the metal-containing component / organic carbon component / Na 2 CO 3 precursors.

[0047] (2) Grinding the precursor obtained in step (1) into powder, placing it in a tube furnace, and roasting it under the atmosphere of hydrogen / argon gas mixture (hydrogen gas fraction is 15%) at 750°C for 1h to obtain alloy nanoparticles / Carbon@Na 2 CO 3 Complex powder.

[0048] (3) Cool the composite powder obtained in step (2) and add it to 300 parts by weight of hot water (60°C) and stir for 20 minutes to dissolve Na 2 CO 3 templat...

Embodiment 3

[0051] (1) 100 parts by weight of untreated electroplating sludge electroplating sludge (mass fraction of heavy metals: 5.19% chromium, 3.96% zinc, 3.28% nickel, 1.76% copper, 0.13% cobalt) , 150 parts by weight of undried industrial organic sludge, 200 parts by weight of K 2 SO 4 After mixing, mechanically stir at a speed of 800rpm at a constant temperature of 70°C until the water evaporates to dryness, and deposit a metal-containing component / organic carbon component / K 2 SO 4 precursors.

[0052] (2) Grinding the precursor obtained in step (1) into powder, placing it in a tube furnace, and roasting it for 2 hours in an atmosphere of 900° C. hydrogen / argon gas mixture (hydrogen gas fraction is 5%) to obtain alloy nanoparticles / Carbon@K 2 SO 4 Complex powder.

[0053] (3) Cool the composite powder obtained in step (2) and add it to 300 parts by weight of hot water (70°C) and stir for 40 minutes to dissolve K 2 SO 4 template. After stirring, let it stand still, the bl...

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Abstract

The invention belongs to the technical field of solid waste resourceful treatment, and discloses a method for preparing a two-dimensional alloy / carbon composite nano-material by utilizing electroplating and organic sludge. The method comprises the following steps: mixing electroplating sludge, organic sludge and inorganic salt, carrying out heating and stirring until moisture is evaporated, and performing depositing to obtain a precursor containing a metal component / organic carbon component / inorganic salt; grinding the precursor, roasting the ground precursor in a protective atmosphere to obtain an alloy nanoparticle / carbon-coated inorganic salt compound, adding the alloy nanoparticle / carbon-coated inorganic salt compound into water to dissolve an inorganic salt template, and separating and recovering black substances floating on the surface of the solution to obtain conductive graphite carbon; and carrying out centrifugal separation on a residual mixture to obtain the two-dimensionalalloy / carbon composite nano-material, and concentrating the residual inorganic salt solution for recycling. The method provided by the invention not only improves the utilization rate of resources, but also provides an economic benefit scheme for solving two major solid waste pollutions.

Description

technical field [0001] The invention belongs to the technical field of solid waste resource treatment, and in particular relates to a method for preparing a two-dimensional alloy / carbon composite nanomaterial by using electroplating and organic sludge. Background technique [0002] At present, the problem of environmental pollution caused by wastewater and sludge generated by the electroplating process is very serious, mainly because the wastewater generated by the electroplating process contains high concentrations of heavy metal ions (Cu 2+ 、Ni 2+ 、Cr 6+ , Zn 2+ , Fe 3+ etc.), a large amount of electroplating sludge will be produced in the process of electroplating wastewater treatment, if the electroplating sludge cannot be treated scientifically and reasonably, it will cause secondary pollution to the environment. [0003] The grade of metal contained in electroplating sludge is higher than that of common metal-rich ores. Taking nickel as an example, common nickel or...

Claims

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Application Information

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IPC IPC(8): B01J23/86B01J37/08B82Y30/00B82Y40/00C02F1/30C02F1/72C25B11/06C02F101/36C02F101/38
CPCB01J23/868B01J37/08B82Y30/00B82Y40/00C02F1/30C02F1/722C02F1/725C25B11/04C02F2101/36C02F2101/38C02F2101/40C02F2305/10B01J35/39B01J35/40B01J35/33Y02E60/36
Inventor 李政冯春全王淦
Owner 佛山经纬纳科环境科技有限公司
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