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Preparation method and application of magnetically-activated hydrothermal biological carbon

A technology of thermal biology and activated water, applied in chemical instruments and methods, water pollutants, alkali metal compounds, etc., can solve the problems of difficult separation and recovery, low biochar yield and specific surface area, etc. The effect of high rate and environmental protection cost

Inactive Publication Date: 2016-12-07
LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to overcome the deficiencies of the prior art, and provides a method for preparing magnetically activated hydrothermal biochar by using aquatic plant waste as a raw material; it solves the problem of biochar yield and specific surface area prepared in the prior art Low, difficult to separate and recycle

Method used

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  • Preparation method and application of magnetically-activated hydrothermal biological carbon
  • Preparation method and application of magnetically-activated hydrothermal biological carbon
  • Preparation method and application of magnetically-activated hydrothermal biological carbon

Examples

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Effect test

Embodiment Al

[0039] (1) Naturally air-dry the reeds so that the internal moisture content is lower than 10%, and then crush them through a 100-mesh sieve to obtain aquatic plant powder;

[0040] (2) Weigh the reed powder described in step (1), put it into the reaction kettle and add a certain amount of deionized water. The mass volume ratio of reed powder and deionized water is 1:50; wherein the mass unit of reed powder is gram, and the unit of volume of deionized water is milliliter;

[0041] (3) The reactor described in step (2) was put into an oven, and the temperature was raised to 200°C, and kept at the final temperature for pyrolysis for 6 hours; The hydrothermal reed biochar was obtained by drying under the bottom;

[0042] (4) Weighing the hydrothermal reed biochar described in step (3), grinding and pulverizing through a 100-mesh sieve to obtain hydrothermal reed biochar powder;

[0043] (5) Weigh a certain amount of hydrothermal reed biochar powder, FeCl 3 , ZnCl 2 and deioni...

Embodiment A2

[0047] (1) Naturally air-dry the cattail so that the internal moisture content is lower than 10%, and then crush it through a 100-mesh sieve to obtain aquatic plant powder;

[0048] (2) Weigh the cattail powder described in step (1), put it into the reaction kettle and add a certain amount of deionized water. The mass volume ratio of cattail powder and deionized water is 1:50; wherein the mass unit of cattail powder is gram, and the unit of deionized water volume is milliliter;

[0049] (3) The reactor described in step (2) was put into an oven, and the temperature was raised to 200°C, and kept at the final temperature for pyrolysis for 6 hours; The hydrothermal typha biochar was obtained by drying under the bottom;

[0050] (4) Weighing the hydrothermal typha biochar described in step (3), grinding and pulverizing through a 100-mesh sieve to obtain hydrothermal typha biochar powder;

[0051] (5) Weigh a certain amount of hydrothermal cattail biochar powder, FeCl 3 , ZnCl ...

Embodiment A3

[0055] (1) Naturally air-dry Zizizania so that the internal moisture content is lower than 10%, and then crush it through a 100-mesh sieve to obtain aquatic plant powder;

[0056] (2) Weigh the Zizania zizizi powder described in step (1), put it into the reaction kettle and add a certain amount of deionized water. The mass-to-volume ratio of Zizania zizizi powder and deionized water is 1:50; wherein the mass unit of Zizizania zizania powder is gram, and the unit of volume of deionized water is milliliter;

[0057] (3) The reactor described in step (2) was put into an oven, and the temperature was raised to 200°C, and kept at the final temperature for pyrolysis for 6 hours; The water-heated water-heated water-heated Zizania japonica biochar was obtained by drying at the bottom;

[0058] (4) Weighing the hydrothermal water-heated Zizania japonica biochar described in step (3), grinding and pulverizing through a 100-mesh sieve to obtain hydrothermal water-heated water-heated Ziz...

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Abstract

The invention relates to a preparation method and application of magnetically-activated hydrothermal biological carbon. The preparation method comprises the following steps: performing hydrothermal reaction on aquatic plant powder and deionized water in a reaction kettle to prepare hydrothermal biological carbon; then fully mixing the hydrothermal biological carbon, FeCl3, ZnCl2 and the deionized water and drying; putting a dried mixed sample into a box-type atmosphere furnace, performing final thermal pyrolysis at a target temperature under the condition of nitrogen protection to prepare the magnetically-activated hydrothermal biological carbon. The magnetically-activated hydrothermal biological carbon material prepared by the method can effectively absorb and remove a large amount of heavy metals like lead and copper in a water body; the composite material prepared by the method can be added into soil in which the lead and the copper exceed the standard so as to reduce the bio-availability of the lead and the copper in the soil and achieve the purposes of resisting and controlling the heavy metals.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a preparation method and application of magnetically activated hydrothermal biochar. Background technique [0002] With the rapid development of my country's economy, the demand for water resources is increasing, but at the same time, the pollution of water resources is also becoming more and more serious. Heavy metal pollution accounts for a considerable proportion of water pollution. Heavy metal pollution is easy to accumulate and expand in the biological chain, and is highly toxic. Therefore, excessive heavy metals in water and the problems caused by them have seriously endangered the ecological environment and human life and health. Among them, lead (Pb) pollution and copper (Cu) pollution in China are particularly serious. In recent years, there have been many incidents of lead pollution and copper pollution in my country. For example, in 2009 and 2010...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/28B01J20/30C02F1/28C02F1/62
CPCB01J20/20B01J20/0229B01J20/0244B01J20/28009B01J2220/46B01J2220/4806B01J2220/4843C02F1/283C02F1/288C02F2101/20
Inventor 王博郭仕林李法云范志平杨登越
Owner LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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