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Preparation method of modified activated carbon from peanut shells and application thereof

A peanut shell and activated carbon technology, which is applied in the field of material preparation and pollutant treatment, can solve problems such as no industrial use value and environmental pollution, and achieve the effects of improving processing capacity, reducing costs, and solving environmental problems

Inactive Publication Date: 2017-09-01
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Peanut is an important oil crop in my country. As an agricultural waste, peanut shell has no industrial value. If it is not processed in time, it will cause certain environmental pollution.

Method used

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  • Preparation method of modified activated carbon from peanut shells and application thereof
  • Preparation method of modified activated carbon from peanut shells and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1. Preparation of Peanut Shell Modified Activated Carbon

[0029] (1) Wash the peanut shells with water, dry them at 100°C for 24 hours, crush them and pass them through a 60-mesh sieve to obtain peanut shell powder.

[0030] (2) Weigh 5.0 g of peanut shell powder, add it to 100 mL of 5% zinc chloride solution, heat in a water bath at 50° C. for 3 h, and finally vacuum-dry at 100° C. for 24 h, then grind to obtain the peanut shell active material.

[0031] (3) Take 5.0 g of peanut shell active raw materials and place them in a tube furnace, and pass nitrogen gas at a rate of 50 mL / min for 10 min to remove the air in the tube. Then, under the protection of nitrogen, the temperature was raised to 800°C at a rate of 3°C / min, and kept for 30min, then the heating was stopped and nitrogen was continuously passed in to cool to room temperature, and then washed and dried.

[0032] (4) Add 2.0 g of the material obtained in step (3) into 100 mL of 2 mol / L hydrochloric acid solut...

Embodiment 2

[0037] 1. Preparation of Peanut Shell Modified Activated Carbon

[0038] (1) Wash the peanut shells with water, dry them at 120° C. for 12 hours, crush them and pass them through a 60-mesh sieve to obtain peanut shell powder.

[0039] (2) Weigh 5.0 g of peanut shell powder, add it to 100 mL of 20% zinc chloride solution, heat in a water bath at 70° C. for 1 h, and finally vacuum-dry at 120° C. for 12 h, then grind to obtain the peanut shell active material.

[0040] (3) Take 5.0 g of peanut shell active raw materials and place them in a tube furnace, and pass nitrogen gas at a rate of 50 mL / min for 10 min to remove the air in the tube. Then, under the protection of nitrogen, the temperature was raised to 600°C at a rate of 3°C / min, and kept for 120min, then the heating was stopped and nitrogen was passed continuously to cool to room temperature, and then washed and dried.

[0041] (4) Add 2.0 g of the material obtained in step (3) into 100 mL of hydrochloric acid solution wit...

Embodiment 3

[0046] 1. Preparation of Peanut Shell Modified Activated Carbon

[0047] (1) Wash the peanut shells with water, dry at 100°C for 24 hours, crush them and pass through a 60-mesh sieve to obtain peanut shell powder

[0048] (2) Weigh 5.0 g of peanut shell powder, add it to 100 mL of 5% potassium hydroxide solution, heat in a water bath at 50° C. for 3 h, and finally vacuum-dry at 100° C. for 24 h, then grind to obtain the peanut shell active material.

[0049] (3) Take 5.0 g of peanut shell active material and place it in a tube furnace, and pass nitrogen gas at a rate of 50 mL / min for 10 min to remove the air in the tube. Then, under the protection of nitrogen, the temperature was raised to 800°C at a rate of 3°C / min, and kept for 30min, then the heating was stopped and nitrogen gas was continuously passed in to cool to room temperature, and washed and dried.

[0050] (4) Add 2.0 g of the material obtained in step (3) into 100 mL of 2 mol / L hydrochloric acid solution, heat in ...

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Abstract

The invention belongs to the field of material preparation and contaminant treatment, and discloses a preparation method of modified activated carbon from peanut shells and application thereof. The activated carbon is prepared by taking peanut shells as a raw material, being activated through a chemical method, and being modified by nitric acid. The preparation method comprises the steps: powdering washed, crushed, sieved peanut shells, immersing in 5 to 20% activator solution, performing water bath, infiltrating activator into peanut shell fibers, and then drying and grinding; performing high-temperature activating under nitrogen protection at 400 to 800 DEG C for 30 to 120min, cooling, washing with hydrochloric acid, then washing to neutral, conducting high-temperature oxidation modification by the nitric acid, washing and drying to obtain the modified peanut shell activated carbon. The modified activated carbon has a uniform texture and well developed pores with a specific surface area of 1807 m<2> / g and a pore volume of 0.725 cm<3> / g. The peanut shell is crop waste which is abundant and cheap enough. The preparation method of the modified activated carbon from the peanut shells reduces the manufacturing cost of the activated carbon, and solves the environmental problems caused by untimely peanut shell processing, and the peanut shells are modified to be applied to water pollution treatment.

Description

technical field [0001] The invention belongs to the field of material preparation and pollutant treatment, and relates to a preparation method and application of modified activated carbon derived from peanut shells. Background technique [0002] With the rapid development of industry and the unreasonable discharge of printing and dyeing wastewater, the pollution of printing and dyeing wastewater in my country's water environment has become more and more serious, which has aroused widespread concern. Printing and dyeing wastewater has the characteristics of biological toxicity, persistence and easy accumulation, which affects the growth and reproduction of animals and plants in the water body, destroys the ecological environment, and endangers human health. At present, the main technologies for treating printing and dyeing wastewater include: chemical precipitation, ion exchange, membrane separation and adsorption, etc. Among them, the adsorption method has been widely used ...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/30C02F1/28C02F101/20C02F101/30
CPCB01J20/20C02F1/283C02F2101/20C02F2101/308
Inventor 刘燕彭建波张骥仇建秦长春张文莉
Owner JIANGSU UNIV
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