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Method for preparing algae base magnetic activated carbon material and application of algae base magnetic activated carbon material

A magnetic activated carbon, algae-based technology, applied in chemical instruments and methods, alkali metal oxides/hydroxides, inorganic chemistry, etc., can solve problems such as production and life impact, cyanobacterial bloom outbreak, human health hazards, etc. Low cost, simple process, good adsorption effect

Inactive Publication Date: 2014-11-12
南京嘉美清丽环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At the same time, with the rapid economic development and the increasing scale of industrial production in recent years, a large amount of industrial wastewater, domestic sewage and agricultural irrigation water have been discharged into the lake, resulting in obvious eutrophication of the lake water body. Nitrogen, Phosphorus and other nutrients are seriously exceeded, eventually leading to frequent outbreaks of cyanobacteria blooms, which have a serious impact on people's production and life. When cyanobacteria cells rupture or die, toxins will be released into the water, mainly including liver toxins and neurotoxins. is a known toxin that attacks the liver and nerves, and poses a hazard to human health
Therefore, there is an urgent need to control lake cyanobacteria, but there are still many problems in the control of cyanobacteria, and the situation is not optimistic

Method used

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  • Method for preparing algae base magnetic activated carbon material and application of algae base magnetic activated carbon material
  • Method for preparing algae base magnetic activated carbon material and application of algae base magnetic activated carbon material
  • Method for preparing algae base magnetic activated carbon material and application of algae base magnetic activated carbon material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Example 1 , Preparation of algae-based magnetic activated carbon material

[0035] The cyanobacteria collected from Taihu Lake were washed with tap water. Soak 1g of blue-green algae in 30mL ferric ammonium oxalate solution with a concentration of 10mg / mL for 18h, centrifuge and dry at 50°C for 6h, spread it into a crucible, put it into an atmosphere furnace, and carbonize it at 800°C under the protection of nitrogen 1h, and then naturally cooled to room temperature to obtain a black powder, which is the algae-based magnetic activated carbon material.

[0036] The obtained algae-based magnetic activated carbon material was characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD), and its magnetic properties were reflected by hysteresis curves. figure 1 It is the SEM image of the algae-based magnetic activated carbon material. Depend on figure 1 It can be seen that Fe 3 o 4 Nanoparticles are more evenly distributed on the surface of algae, a...

Embodiment 2

[0037] Example 2 , Preparation of algae-based magnetic activated carbon material

[0038] The cyanobacteria collected from Taihu Lake were washed with tap water. Soak 0.5g of blue-green algae in 6mL of ferric chloride solution with a concentration of 5mg / mL for 12h, then dry at 30°C for 4h, spread it into a crucible, put it into an atmosphere furnace, and carbonize at 500°C for 0.5 h, then naturally cooled to room temperature to obtain a black powder, which is the algae-based magnetic activated carbon material.

[0039] The obtained algae-based magnetic activated carbon material was characterized by a scanning electron microscope (SEM), and its magnetic properties were reflected by a hysteresis curve. Figure 4 It is the SEM image of the algae-based magnetic activated carbon material. Depend on Figure 4 It can be seen that the generated Fe 3 o 4 Nanoparticles are few and small, and very little loaded on the surface of algae. Figure 5It is the hysteresis curve of the ...

Embodiment 3

[0040] Example 3 , Preparation of algae-based magnetic activated carbon material

[0041] The cyanobacteria collected from Taihu Lake were washed with tap water. Soak 2g of blue-green algae in 60mL ferric nitrate solution with a concentration of 50mg / mL for 24h, then dry at 80°C for 8h, spread it into a crucible, put it into an atmosphere furnace, and carbonize it at 900°C for 2h under the protection of nitrogen, then Cool naturally to room temperature to obtain black powder, which is the algae-based magnetic activated carbon material.

[0042] The obtained algae-based magnetic activated carbon material was characterized by a scanning electron microscope (SEM), and its magnetic properties were reflected by a hysteresis curve. Figure 6 It is the SEM image of the algae-based magnetic activated carbon material. Depend on Figure 6 It can be seen that the generated Fe 3 o 4 The nanoparticles are more and larger in size, and almost all cover the surface of the algae, and th...

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Abstract

The invention discloses a method for preparing an algae base magnetic activated carbon material and the application of the algae base magnetic activated carbon material. According to the method, the preparing process and the magnetizing process of the activated carbon material are synchronized, a one-pot mode is adopted, drying, smashing, sieving and other preprocessing and activating processes are not needed, the steps of washing, drying and activator removing and the like are not needed after carbonization, a ferric salt solution is directly carbonized into ferroferric oxide nanometer particles in the preparing process, the ferroferric oxide nanometer particles are loaded to the surface of the activated carbon material, the operation is simple and easy to carry out, the preparing period is short, cost is low, mass production can be achieved, and due to the fact that the environmental pollutant of blue algae is utilized in the preparing process, dual environment benefits are achieved. The prepared algae base magnetic activated carbon material has large specific surface area and porosity, can efficiently adsorb methylene blue or methylene blue or bisphenol A in wastewater, has superparamagnetism and can be quickly separated from a liquid phase system after adsorption, and recycling is facilitated.

Description

technical field [0001] The invention belongs to the field of environmental protection and resource comprehensive utilization, and specifically relates to a method for preparing algae-based magnetic activated carbon materials by using cyanobacteria as carbon-containing raw materials and loading iron ferric oxide nanoparticles through processes such as soaking and carbonization, and the prepared algae Based Magnetic Activated Carbon Materials and Applications. Background technique [0002] Activated carbon is widely used in the field of adsorption due to its large specific surface area and porous structure. Although it has obvious advantages in adsorption, the large-scale use of activated carbon has been hindered by some engineering problems, such as recycling and regeneration costs. Therefore, it is urgent to find a simple and easy method to realize the rapid separation of activated carbon. If the activated carbon material can be endowed with magnetism, the effective separa...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/28B01J20/30C02F1/28
Inventor 白雪华祖林禹露唐志强顾海鑫黄欣戴章艳
Owner 南京嘉美清丽环境科技有限公司
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