Method for making activated carbon by using wild peach pit shells

A technology for preparing activated carbon and core shell, which is applied in the field of preparing activated carbon from pecan shell and achieves the effects of firm texture, developed voids and solving the problem of environmental pollution

Inactive Publication Date: 2015-04-08
姚雯楸
4 Cites 7 Cited by

AI-Extracted Technical Summary

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In the process of preparing activated carbon, there is no relevant report on the method of preparing activated carbon from th...
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Abstract

The invention discloses a method for making activated carbon by using wild peach pit shells. The method comprises the steps that the wild peach pit shells are dried for 12 hours at the temperature of 120DEG C to be dewatered, and are smashed to penetrate through a 40-mesh screen, the smashed wild peach pit shells are soaked in a 60% zinc chloride solution for 24 hours under the condition that the ratio of the wild peach pit shells to the zinc chloride solution is 1:2, then the soaked wild peach pit shells are transferred to a microwave oven with the microwave power ranging from 400W to 700W, and are processed for 10-30 minutes through irradiation, the processed wild peach pit shells are activated for 30-120 minutes at the temperature ranging from 400DEG C to 700DEG C, and then are processed through acid picking in a diluted hydrochloric acid solution which has the volume ratio of being 1:9 and is boiled for 30 minutes, cooling is conducted, the cooled wild peach pit shells are washed until the PH value ranges from six to seven, and are dried, and therefore the wild peach pit shell activated carbon can be obtained. The wild peach pit shell activated carbon made through the method has excellent adsorption performance.

Technology Topic

ChemistryActivated carbon +6

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  • Method for making activated carbon by using wild peach pit shells

Examples

  • Experimental program(3)

Example Embodiment

[0022] Implementation case 1
[0023] (1) Dry the hickory shell at 120°C for 12 hours for dehydration;
[0024] (2) Crush the dried raw material through a 40-mesh sieve;
[0025] (3) According to the solid-liquid ratio of 1:2, soak in a 60% zinc chloride solution for 24 hours;
[0026] (4) Place the soaked raw materials in a 400W microwave oven and irradiate the microwave for 30 minutes;
[0027] (5) Place the microwave-irradiated raw materials in an activation furnace at 600°C for 90 minutes;
[0028] (6) Use a dilute hydrochloric acid solution with a volume ratio of 1:9 to boil for 30 minutes;
[0029] (7) Rinse the activated material with tap water to make its pH value 6-7;
[0030] (8) The finished activated carbon can be obtained after drying the raw materials after washing in an oven;
[0031] (9) In this example, the iodine adsorption value of the active carbon from the core shell of the apricot kernel is 1068mg/g.

Example Embodiment

[0032] Implementation case 2
[0033] (1) Dry the hickory shell at 120°C for 12 hours to dehydrate.
[0034] (2) Crush the dried raw material through a 40-mesh sieve.
[0035] (3) According to the solid-liquid ratio of 1:2, soak in 60% zinc chloride solution for 24 hours.
[0036] (4) Place the soaked raw materials in a 500W microwave oven and irradiate the microwave for 20 minutes.
[0037] (5) Place the microwave-irradiated raw materials in an activation furnace at 700°C for 60 minutes.
[0038] (6) Use a dilute hydrochloric acid solution with a volume ratio of 1:9 to boil for 30 minutes.
[0039] (7) Rinse the activator with tap water to make the pH value close to 6-7.
[0040] (8) The finished activated carbon can be obtained by placing the washed raw materials in an oven for drying.
[0041] (9) In this example, the iodine adsorption value of the active carbon from the core shell of the mountain peach is 1132 mg/g.

Example Embodiment

[0042] Implementation case 3
[0043] (1) Dry the hickory shell at 120°C for 12 hours to dehydrate.
[0044] (2) Crush the dried raw material through a 40-mesh sieve.
[0045] (3) According to the solid-liquid ratio of 1:2, soak in 60% zinc chloride solution for 24 hours.
[0046] (4) Place the soaked raw materials in a 700W microwave oven and irradiate the microwave for 15 minutes.
[0047] (5) Place the microwave-irradiated raw materials in an activation furnace at 400°C for 120 minutes.
[0048] (6) Use a dilute hydrochloric acid solution with a volume ratio of 1:9 to boil for 30 minutes.
[0049] (7) Rinse the activator with tap water to make the pH value close to 6-7.
[0050] (8) The finished activated carbon can be obtained by placing the washed raw materials in an oven for drying.
[0051] (9) In this example, the iodine adsorption value of the active carbon from the core shell of Prunus vulgaris was 1351 mg/g.

PUM

PropertyMeasurementUnit
Iodine adsorption value1068.0mg/g
Iodine adsorption value1132.0mg/g
Iodine adsorption value1351.0mg/g

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