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Preparing method of waste newspaper base charcoal

A technology of waste newspapers and biochar, applied in chemical instruments and methods, other chemical processes, etc., to achieve the effects of wide sources, rich surface functional groups, and high ash content

Inactive Publication Date: 2019-04-19
ANHUI AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, there is no research on the preparation of biochar from waste newspapers.

Method used

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  • Preparing method of waste newspaper base charcoal
  • Preparing method of waste newspaper base charcoal
  • Preparing method of waste newspaper base charcoal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Preparation of waste newspaper-based biochar

[0034] (1) Grinding waste newspaper balls without any chemical treatment into powder, drying for subsequent use;

[0035] (2) Put the waste newspaper that has been ground into powder in a tube furnace, raise the temperature to 400° C. at a rate of 3° C. / min, and keep it warm for 3 hours to obtain the waste newspaper-based biochar;

[0036] (3) Grind the prepared waste newspaper-based biochar through a 200-mesh sieve, dry it for later use, and record it as WBC-400.

Embodiment 2

[0038] Preparation of waste newspaper-based biochar

[0039] (1) Grinding waste newspaper balls without any chemical treatment into powder, drying for subsequent use;

[0040] (2) Put the waste newspaper that has been ground into powder in a tube furnace, raise the temperature to 500° C. at a rate of 3° C. / min, and keep it warm for 2 hours to obtain the waste newspaper-based biochar;

[0041] (3) Grind the prepared waste newspaper-based biochar through a 200-mesh sieve, dry it for later use, and record it as WBC-500.

Embodiment 3

[0043] Preparation of waste newspaper-based biochar

[0044] (1) Grinding waste newspaper balls without any chemical treatment into powder, drying for subsequent use;

[0045] (2) Put the waste newspaper that has been ground into powder in a tube furnace, raise the temperature to 600° C. at a rate of 3° C. / min, and keep it warm for 1 hour to obtain the waste newspaper-based biochar;

[0046] (3) Grind the prepared waste newspaper-based biochar through a 200-mesh sieve, dry it for later use, and record it as WBC-600.

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Abstract

The invention discloses a preparing method of waste newspaper base charcoal. The method includes the following steps of firstly, grinding waste newspaper not subjected to any chemical treatment into powder; secondly, placing the waste newspaper ground powder in a tube furnace, raising the temperature to be 400-600 DEG C under the protection of N2, and keeping the temperature for 1-3 h to obtain the waste newspaper base charcoal. Raw material sources are wide, cost is low, and raw materials are not subjected to any chemical treatment so that no pollution can be caused; the preparing process issimple, and the obtained charcoal has rich surface functional groups, high ash content and porosity, is beneficial for adsorption and is an environment-friendly material.

Description

technical field [0001] The invention relates to the field of biochar, in particular to a method for preparing waste newspaper-based biochar. Background technique [0002] With the advancement of global industrialization, the control of heavy metal pollution has become one of the world's environmental problems. Heavy metal pollutants mainly include lead, mercury, cadmium, chromium, arsenic, copper, nickel, zinc and other toxic substances. Pollutants mainly come from industrial discharges, such as electroplating, printing and dyeing, leather manufacturing, mining, metal smelting, etc., which are discharged into water bodies or soil, resulting in serious environmental pollution. Heavy metals are carcinogenic, teratogenic, non-degradable, and bioaccumulative, and can cause irreversible damage to humans and other organisms in the biological chain. Therefore, the control of heavy metal pollution is an urgent project. Traditional treatment methods such as ion exchange, chemical ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30
CPCB01J20/20
Inventor 高慧李文奇胡蝶张利萍关莹
Owner ANHUI AGRICULTURAL UNIVERSITY
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