Method for preparing activated carbon by utilizing camellia oleifera shells

A technology for preparing activated carbon and camellia husk, which is applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., to achieve the effects of developed pore structure, sufficient raw materials and low price

Inactive Publication Date: 2013-04-03

HUNAN AMAZING GRACE BIOTECH

6 Cites 32 Cited by

AI-Extracted Technical Summary

Problems solved by technology

[0004] In recent years, many patents related to the development and utilization of Camellia oleifera husks have been focused on the application of new materials. For example, patent application No. 201210027121.6 relates to a method for preparing a special slow-release fertilizer for Camellia oleifera by using Camellia oleifera husk; patent application No. 201010243982.9 discloses a The preparation method of biosorbent prepared from camellia ...

Abstract

The invention discloses a method for preparing activated carbon by utilizing camellia oleifera shells. The method comprises the following steps: screening the camellia oleifera shells to remove impurities; mixing and soaking the shell particles and a certain proportion of activated agent; then firstly carbonizing, activating through secondary heating; and sequentially scouring, washing, drying and pelletizing the activated materials to obtain activated carbon. The activated carbon is prepared by the camellia oleifera shells which are obtained from leftovers in processing of camellia oleifera, thus source is sufficient; and the activated carbon is prepared by taking the camellia oleifera shells as raw materials and combining physical and chemical methods, is simple in process, good in stability, less in pollution, easy to regenerate, low in production cost, large in specific surface area and good in adsorptive property.

Application Domain

Carbon compounds

Technology Topic

Activated carbonPollution +4

Examples

Experimental program(2)

Example Embodiment

[0013] Example 1.

[0014] Select the oil-tea camellia husk and place it in a constant temperature electric heating drying box to reduce the dry moisture content to 6%. The pretreated husk is further crushed to 60 mesh, and the oil-tea husk powder and 80% phosphoric acid solution are in a weight ratio of 1:2.5. Stir and mix evenly After standing for 24 hours, the acid-leached camellia husks were heated and carbonized in a 250°C dry box for 80 minutes; the carbonized camellia husks were placed in a resistance furnace and the temperature was increased to 550°C for 60 minutes; after cooling, the activated carbon Take it out, add clean water and wash repeatedly, make the pH value 7 and dry it in a drying box at 100°C to make the activated carbon have a moisture content of 3%. After crushing and sieving, the finished product of the camellia husk activated carbon is obtained.

[0015] According to the national standard GB/T 12496.10-1999 and GB/T 12496.8-1999, the iodine adsorption value of camellia shell activated carbon can reach 1683mg/g and the methylene blue adsorption value can reach 187mg/g, which fully meets the national standard of first-class activated carbon Adsorption performance index. The specific surface area of the prepared activated carbon from camellia shell was 962m by using an automatic specific surface analyzer. 2 /g, the scanning electron microscope observation results show that the activated carbon from camellia shell has developed pore structure and rich mesopores.

Example Embodiment

[0016] Example 2.

[0017] Select the oil-tea camellia husk and place it in a constant temperature electric heating drying box to reduce the dry moisture content to 5%. The pre-treated husk is further crushed to 80 mesh, and the oil-tea husk powder and 60% phosphoric acid solution are in a weight ratio of 1:3.5. Stir and mix well After standing for 48 hours, the acid-leached camellia husks were heated and carbonized in a drying oven at 150°C for 120 minutes; the carbonized camellia husks were placed in a resistance furnace and the temperature was increased to 650°C for activation for 120 minutes; after cooling, the activated carbon Take it out, add clean water and repeatedly wash, make the pH value 5 and dry in a 120°C drying box to make the activated carbon have a moisture content of 5%. After crushing and sieving, the finished product of camellia husk activated carbon is obtained.

[0018] According to national standards GB/T 12496.10-1999 and GB/T 12496.8-1999, the iodine adsorption value of camellia shell activated carbon can reach 1534mg/g and the methylene blue adsorption value can reach 177mg/g, which fully meets the national standard of first-class activated carbon. Adsorption performance index. The specific surface area of the prepared activated carbon from camellia shell was 949m measured by the automatic specific surface analyzer. 2 /g, the scanning electron microscope observation results show that the activated carbon from camellia shell has developed pore structure and rich mesopores.

PUM

Property	Measurement	Unit
Iodine adsorption value	1683.0	mg/g
Adsorption value of methylene blue	187.0	mg/g
Specific surface area	962.0	m²/g

Description & Claims & Application Information

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Method for preparing activated carbon by utilizing camellia oleifera shells

A technology for preparing activated carbon and camellia husk, which is applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., to achieve the effects of developed pore structure, sufficient raw materials and low price

AI-Extracted Technical Summary

Problems solved by technology

Abstract

Examples

Example Embodiment

Example Embodiment

PUM

Description & Claims & Application Information

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