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Method for preparing mixed-base biomass activated carbon from Carya cathayensis shells and maize straws

A technology of corn stalks and hickory shells, applied in chemical instruments and methods, water pollutants, water/sludge/sewage treatment, etc., can solve the problems of polluting the environment, waste of resources by activated carbon, etc., and achieve well-developed mesopores and good adsorption performance effect

Inactive Publication Date: 2016-06-15
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a preparation method for making mixed-based biomass activated carbon by using hickory shells and corn stalks, which can solve the problems of wasting resources and polluting the environment in the existing activated carbon production

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0012] The preparation method of hickory nut shell-corn stalk used in the present invention to prepare mixed-based biomass activated carbon comprises the following steps of cleaning, drying, pulverizing, weighing, impregnating, drying, activating, washing, drying, grinding, sieving, bottling, etc. .

[0013] (1) Cleaning, drying, crushing: remove the rotten and deteriorated corn stalks and hickory shells and impurities on the surface, dry the cleaned corn stalks and hickory shells naturally or by heating at 80°C, and then use a grinder crush;

[0014] (2) Weighing and impregnation: Weigh the biomass material in the crucible according to the mass ratio of corn stalks and hickory nut shells to 1-5:9-5, then add distilled water to dissolve zinc chloride at a ratio of 1:1, and dissolve the dissolved The zinc chloride solution is poured into the crucible, wherein the zinc chloride: mixed biomass mass ratio is 1.5 to 3.0:1, and the mixed feed solution is immersed at room temperatur...

Embodiment example 1

[0021] A method for preparing mixed-based biomass activated carbon using pecan shells-corn stalks as raw materials, comprising the following steps:

[0022] (1) Cleaning, drying, crushing: remove the rotten and deteriorated corn stalks and hickory shells and impurities on the surface, dry the cleaned corn stalks and hickory shells naturally or by heating at 80°C, and then use a grinder crush;

[0023] (2) Weighing and impregnation: Weigh 10 g of mixed biomass material in a crucible according to the mass ratio of corn stalks to hickory nut shells of 3:7, then weigh 25 g of zinc chloride, add 25 ml of distilled water to dissolve, and pour it into the crucible. Soak the mixed feed solution at room temperature for 12 hours;

[0024] (3) Drying and activation: place the crucible in an electric blast oven at 90°C for 8 hours, then put it into a muffle furnace, set the activation temperature to 700°C and the activation time to 1 hour;

[0025] (4) Washing and drying: After the acti...

Embodiment example 2

[0029] A method for preparing mixed-based biomass activated carbon using pecan shells-corn stalks as raw materials, comprising the following steps:

[0030] (1) Cleaning, drying, crushing: remove the rotten and deteriorated corn stalks and hickory shells and impurities on the surface, dry the cleaned corn stalks and hickory shells naturally or by heating at 80°C, and then use a grinder crush;

[0031] (2) Weighing and impregnation: Weigh 10g of biomass material in a crucible according to the mass ratio of corn stalks to hickory nut shells of 1:1, then weigh 15g of zinc chloride, add 15ml of distilled water to dissolve, pour into the crucible, and The mixed material solution was soaked at room temperature for 12 hours;

[0032] (3) Drying and activation: place the crucible in an electric blast oven at 90°C for 8h, then put it into a muffle furnace, set the activation temperature to 600°C, and the activation time to 0.5h;

[0033] (4) Washing and drying: After the activation, ...

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Abstract

The invention discloses a method for preparing mixed-base biomass activated carbon from Carya cathayensis shells and maize straws.The method includes the steps of (1), cleaning, drying and smashing the maize straws and the Carya cathayensis shells, and uniformly mixing according to a mass ratio of 1-5:9-5 so as to form mixed biomass; (2), dissolving zinc chloride into water according to a mass ratio of 1:1, and dissolving the mixed biomass formed in the step (1) into a zinc chloride solution, wherein a mass ratio of the zinc chloride to the mixed biomass is 1.5-3.0:1; (3), soaking a mixed solution formed in the step (2) for 12 hours, and drying at the temperature of 90 DEG C for 8 hours; (4), activating the dried mixed biomass at the temperature of 600-800 DEG C for 0.5-1.5 hours; (5), sufficiently washing an activated product by a 0.1 mol / L hydrochloric acid solution and distilled water sequentially till filtrate is neutral, drying, grinding and sieving so as to obtain the Carya cathayensis shell-maize straw mixed-base biomass activated carbon.

Description

technical field [0001] The invention relates to the technical field of activated carbon production, in particular to a method for preparing mixed-based biomass activated carbon by using pecan shells and corn stalks as raw materials. Background technique [0002] As a renewable adsorbent, activated carbon has good adsorption performance and stable chemical properties, and has a developed pore structure and a huge specific surface area. It is widely used in practice, especially in the field of environmental protection in recent years. making its demand increasing. In the context of the energy crisis, biomass materials have become a focus of activated carbon research due to their low price, abundant sources, safety and renewability. The use of biomass materials to prepare activated carbon can not only reduce the cost of activated carbon to a large extent, but also make the use of biomass residues rational and resourceful, while avoiding environmental problems caused by fugitiv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30C02F1/28
CPCB01J20/20B01J2220/4825C02F1/281C02F1/283C02F2101/308
Inventor 康春莉朱玲田涛许振国白如月李元媛
Owner JILIN UNIV
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