Method for preparing biomass activated carbon from citrus peel residues

A technology of citrus peel residue and activated carbon, which is applied in chemical instruments and methods, carbon compounds, inorganic chemistry, etc., can solve the problems such as the residual material of peel residue is not effectively reduced, the problem of peel residue treatment has not been substantially solved, etc. Efficient conversion and utilization, good adsorption performance, and the effect of avoiding secondary pollution

Pending Publication Date: 2022-02-01
CHONGQING UNIV OF TECH
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing biomass activated carbon from citrus peels, so as to solve the existing problems: the remaining substances of the peels after extraction have not been effectively reduced, and the problem of peels and residues has not been substantially solved.

Method used

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Embodiment Construction

[0043] A method for preparing biomass activated carbon from citrus peel dregs, the method comprises the following steps:

[0044] Step 1: Screen out suitable citrus peels;

[0045] Step 2: removing pesticide residues from citrus peels;

[0046] Step 3: drying the cleaned citrus peels by air-heat mixed drying;

[0047] Step 4: Preliminary crushing of the dried citrus peels;

[0048] Step 5: Screening the crushed citrus pomace after crushing;

[0049] Step 6: activating and generating the broken citrus peel;

[0050] Step 7: secondary drying;

[0051] Step 8: Carbonization for the first time;

[0052] Step nine: the second carbonization;

[0053] Step 10: Restore and adjust pH;

[0054] Step Eleven: Dry three times.

[0055] The size screened in step five is 1-3mm, and the optimal choice is 2.3mm;

[0056] Step six is ​​specifically:

[0057] S1: Add an appropriate amount of distilled water just to cover the citrus peel, soak for 1-5 minutes, the optimal choice is 3 mi...

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Abstract

The invention discloses a method for preparing biomass activated carbon from citrus peel residues, and relates to the technical field of recycling of waste citrus peel residues. The method comprises the following steps: 1, screening proper citrus peel residues; 2, removing pesticide residues from the citrus peel residues; 3, drying the cleaned citrus peel residues in a wind-heat mixed drying manner; 4, carrying out primary crushing on the dried orange peel residues; 5, screening the crushed citrus peel residues according to the size after being crushed; 6, carrying out activation generation on the crushed citrus peel residues; 7, performing secondary drying; 8, carrying out first carbonization; 9, performing second carbonization; 10, reducing and adjusting the pH value; 11, performing third time drying. Through the integral method design, the citrus peel residues are convenient to recycle, and the citrus peel residues are compounded for multiple times to prepare charcoal by using the method, so that the quality of the generated charcoal is greatly improved.

Description

technical field [0001] The invention relates to the technical field of recycling waste citrus peels, in particular to a method for preparing biomass activated carbon from citrus peels. Background technique [0002] China is one of the important origins of citrus. According to statistics, China's citrus planting area and output rank first in the world. The consumption of citrus in the world is mainly fresh eating, juicing and canning, and citrus processing produces a large amount of waste pomace. According to statistics, after the citrus is squeezed out, the pomace waste produced accounts for about 40%-50% of the citrus. With the development of citrus processing industry, the problem of the treatment of citrus pomace has become increasingly prominent and has gradually attracted attention. Disposal of citrus peels not only causes waste of resources, but also pollutes and endangers the environment, which has become one of the important factors restricting the scale developmen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/348C01B32/324
CPCC01B32/348C01B32/324
Inventor 胡学步张晓凤邱磊靳怡李纲
Owner CHONGQING UNIV OF TECH
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