Biomass-based magnetic activated carbon and preparation method thereof

A magnetic activated carbon and biomass technology, which is applied in chemical instruments and methods, alkali metal compounds, alkali metal oxides/hydroxides, etc., can solve the problem of poor magnetic properties of magnetic activated carbon, complex preparation process, difficult operation, and more consumption Time and energy issues, to save energy and time, reduce the amount of soaking water, and save energy

Inactive Publication Date: 2018-06-12
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Both of the above two methods use the "two-step method" to prepare magnetic activated carbon, and the temperature required for the preparation process is very high. Not only the preparation process is complicated, but also the high preparation temperature greatly increases the production cost.
Another example is that the patent application number is 200910077154.X, and the name is: "a preparation method of magnetic activated carbon and the magnetic activated carbon". Fully mixed with surfactants to form a mixture, pressurized and dried, then carbonized the dried molded product at a temperature of 400-700°C to make a carbonized product, and then activated the carbonized product at a temperature of 700-1000°C to prepare magnetic activated carbon , this method uses a binder, which is easy to caus...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Take the magnetic agent Fe(NO 3 ) 3 9H 2 O 0.75g and surfactant dodecyltrimethylammonium chloride 1.5g, add 40ml water to dissolve, put into 80℃ water bath for half an hour to prepare solution A; weigh 18g zinc chloride and dissolve in 30ml water , and add 3ml of concentrated hydrochloric acid to prevent the hydrolysis of zinc chloride to prepare solution B; mix solution A and solution B to prepare solution C; weigh 10g of Chinese fir chips, dip the Chinese fir chips in solution C, and add 10ml of water , fully stirred to mix the raw materials evenly, sealed the mouth of the beaker with plastic wrap and left for 24 hours to obtain raw material D; after 24 hours, put the raw materials in an oven at 105°C for drying. Place the dried raw materials in a self-made resistance furnace device for activation, set the activation temperature to 500°C, control the system pressure to 10KPa, and activate the time for 60 minutes. After cooling, take it out, mash it, boil it in boili...

Embodiment 2

[0017] Take the magnetic agent Fe(NO 3 ) 3 9H 2 O 1.25g and surfactant dodecyltrimethylammonium chloride 2.5g, add 40ml water to dissolve, put into 80°C water bath for half an hour to prepare solution A; weigh 18g zinc chloride and dissolve in 30ml water , and add 3ml of concentrated hydrochloric acid to prevent the hydrolysis of zinc chloride to prepare solution B; mix solution A and solution B to prepare solution C; weigh 10g of Chinese fir chips, dip the Chinese fir chips in solution C, and add 10ml of water , fully stirred to mix the raw materials evenly, sealed the mouth of the beaker with plastic wrap and left for 24 hours to obtain raw material D; after 24 hours, put the raw materials in an oven at 105°C for drying. Place the dried raw materials in a self-made resistance furnace device for activation, set the activation temperature to 500°C, control the system pressure to 10KPa, and activate the time for 30 minutes. After cooling, take it out, mash it, boil it in boil...

Embodiment 3

[0019] Take the magnetic agent Fe(NO 3 ) 3 9H 2 O 1.0g and surfactant dodecyltrimethylammonium chloride 2.0g, add 40ml water to dissolve, put into 80℃ water bath for half an hour to prepare solution A; weigh 18g zinc chloride and dissolve in 30ml water , and add 3ml of concentrated hydrochloric acid to prevent the hydrolysis of zinc chloride to prepare solution B; mix solution A and solution B to prepare solution C; weigh 10g of Chinese fir chips, dip the Chinese fir chips in solution C, and add 10ml of water , fully stirred to mix the raw materials evenly, sealed the mouth of the beaker with plastic wrap and left for 24 hours to obtain raw material D; after 24 hours, put the raw materials in an oven at 105°C for drying. Place the dried raw materials in a self-made resistance furnace for activation, set the activation temperature to 500°C, control the system pressure to 10KPa, and activate the time for 60 minutes. After cooling, take it out, grind it, boil it in boiling wate...

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Abstract

The invention relates to biomass-based magnetic activated carbon and a preparation method thereof. The method includes: dissolving a certain amount of ZnCl2 into water to obtain a solution A, dissolving Fe(NO3)3 9H2O and dodecyl trimethyl ammonium chloride into water according to a certain mass proportion, subjecting to water bath at 80 DEG C for half an hour to obtain a solution B, impregnating waste biomass in the mixed solution of the solution A and the solution B for a certain period of time, drying in a drying oven of 105 DEG C, weighing a certain mass of the dried material, and activating the weighed material in a resistance furnace under certain system pressure and activation temperature for a certain period of time; boiling the activation product in boiling water for half an hour,washing with deionized water until the activation product is neutral, filtering, drying, and grinding to obtain the magnetic activated carbon. The preparation method has the advantages that the methodis simple in preparation process, low in cost and the like; the magnetic activated carbon prepared by the method is excellent in magnetic performance, less prone to magnetic substance falling off andexcellent in adsorption performance.

Description

technical field [0001] The invention relates to a method for preparing magnetic activated carbon and magnetic activated carbon prepared by the method. Background technique [0002] Agricultural and forestry wastes are derived from plants and are mainly composed of C, H, O, N, etc. They are the products of plant photosynthesis and are renewable and sustainable. my country is a large country producing agriculture and forestry, with abundant agricultural and forestry resources. In addition to a part of agricultural and forestry wastes in my country being used for power generation and other energy utilization, a large part is abandoned or incinerated. Using waste biomass to prepare activated carbon can not only reduce environmental pressure , can also increase economic benefits. [0003] Due to its high specific surface area, rich pore structure, and excellent adsorption performance, activated carbon is widely used in various fields, such as medical pharmaceuticals, chemical pro...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/28B01J20/30
CPCB01J20/20B01J20/0288B01J20/0296B01J20/28009
Inventor 丘克强陈健
Owner CENT SOUTH UNIV
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