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Magnetic porous carbon material as well as preparation method and application thereof

A porous carbon, magnetic technology, applied in the field of environmental remediation, can solve the problems of short life and limited adsorption capacity

Active Publication Date: 2021-07-06
GUANGDONG INST OF ECO ENVIRONMENT & SOIL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the adsorption materials disclosed in related technologies have limited adsorption capacity and short service life, which need further improvement.

Method used

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  • Magnetic porous carbon material as well as preparation method and application thereof
  • Magnetic porous carbon material as well as preparation method and application thereof
  • Magnetic porous carbon material as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0065] This embodiment provides a magnetic porous carbon sphere, the preparation method of which comprises the following steps:

[0066] Step 1): Mix 10g NaOH and 5.04g Na 2 SO 3 Dissolve in 100ml of ultrapure water, ultrasonic treatment for 20min, to obtain a solution containing 2.5M NaOH and 0.4M NaOH 2 SO 3 mixed solution. 5g of wooden balls with a diameter of 8mm (the physical picture is shown in figure 1 (shown in a) soaked in 50mL mixed solution, ultrasonicated for 30min, transferred to the reaction kettle, kept at 100°C for 10h, cooled to normal temperature after reaction, and rinsed with deionized water.

[0067] Step 2): the biomass after the above reaction was placed in 50mL of 2.5M H 2 o 2 , transferred to a reactor, heated to 100°C, stopped heating after 6 hours of reaction, took out after cooling and freeze-dried to obtain millimeter fiber balls.

[0068] Step 3): a certain mass (0g, 2g, 4g or 6g) of Fe(NO 3 ) 3 9H 2 O was dissolved in 50ml ethanol solut...

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Abstract

The invention discloses a magnetic porous carbon material and a preparation method and application thereof. The magnetic porous carbon material comprises porous carbon and nanoscale zero-valent iron, the diameter of the porous carbon is 6-10 mm, and the nanoscale zero-valent iron is loaded in the porous carbon. The millimeter-scale porous carbon is adopted to load the active substance nano zero-valent iron, so that the interference of soil particles or colloidal particles on the porous carbon can be effectively reduced, the adsorption and fixation effects on heavy metals are effectively improved, and the service life of the material is prolonged. Meanwhile, the millimeter-scale porous carbon is easy to recycle, so that the heavy metal can be extracted and separated from the polluted water body or soil, the content of the heavy metal in the water body or soil is reduced, and the recycling of the material is realized.

Description

technical field [0001] The invention relates to the technical field of environmental restoration, in particular to a magnetic porous carbon material and its preparation method and application. Background technique [0002] With the rapid development of industrialization and urbanization, the ecological environment system is gradually affected by human activities, especially the mining and smelting of rare metals, the use of unqualified pesticides and other human production activities lead to a large amount of pollutants containing heavy metals entering the soil, among which Cadmium (Cd) pollution is the most serious. Cd is a toxic and carcinogenic heavy metal. Cd pollution has the characteristics of bioaccumulation and high persistence, which has a great impact on the growth, yield and quality of crops. Dietary studies have shown that rice is the main route of cadmium intake. Once the irrigation water containing cadmium enters the paddy field, it will pollute the soil of t...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/28B01J20/30B01J20/32C02F1/28B09C1/00C02F101/20C02F101/10
CPCB01J20/20B01J20/28009B01J20/3078B01J20/32C02F1/283B09C1/00C02F2101/20C02F2101/103
Inventor 方利平李芳柏朱振龙刘凯
Owner GUANGDONG INST OF ECO ENVIRONMENT & SOIL SCI
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