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Preparation method and application of magnetic activated hydrothermal biochar microspheres

A technology of thermal biology and water activation, applied in chemical instruments and methods, biofuels, alkali metal compounds, etc., can solve the problems of low biochar yield and specific surface area, difficult separation and recovery, etc., and achieve high strength and high specific surface area , the effect of avoiding environmental problems

Inactive Publication Date: 2017-02-22
LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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  • Summary
  • 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 microspheres using aquatic plant waste as raw material; The problem of low specific surface area and difficulty in separation and recovery

Method used

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  • Preparation method and application of magnetic activated hydrothermal biochar microspheres
  • Preparation method and application of magnetic activated hydrothermal biochar microspheres
  • Preparation method and application of magnetic activated hydrothermal biochar microspheres

Examples

Experimental program
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Effect test

Embodiment Al

[0043] (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 reed powder;

[0044] (2) Weigh the mass volume ratio of reed powder, iron salt catalyst and deionized water described in step (1) to be 4:1:50; wherein the mass unit of reed powder and iron salt catalyst is gram, and the volume of deionized water is The unit is milliliters.

[0045] (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 microspheres were obtained by drying at the bottom;

[0046] (4) Weighing the hydrothermal reed biochar microspheres in step (3), grinding and pulverizing through a 100-mesh sieve to obtain hydrothermal reed biochar microsphere powder;

[0047] (5) Weigh a certain amount of hydrothermal reed biochar microsphere powder, FeCl 3 , ZnCl 2 and deionized water we...

Embodiment A2

[0051] (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 the cattail powder;

[0052] (2) Weigh the mass volume ratio of cattail powder, iron salt catalyst and deionized water described in step (1) to be 4:1:50; wherein the mass unit of cattail powder and iron salt catalyst is gram, and the volume of deionized water is The unit is milliliters.

[0053] (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 microspheres were obtained by drying under the lower pressure;

[0054] (4) Weighing the hydrothermal typha biochar described in step (3), grinding and pulverizing through a 100-mesh sieve to obtain hydrothermal typha biochar microsphere powder;

[0055] (5) Weigh a certain amount of hydrothermal cattail biochar microsphere powder, FeCl 3 , ZnC...

Embodiment A3

[0059] (1) Naturally air-dry Zizania so that the internal moisture content is lower than 10%, and then crush it through a 100-mesh sieve to obtain Zizania powder;

[0060] (2) Weigh the mass-volume ratio of Zizania grass powder, iron salt catalyst and deionized water described in step (1) to be 4:1:50; wherein the mass unit of Zizania grass powder and iron salt catalyst is gram, and the mass volume ratio of deionized water is 4:1:50; The unit of volume is milliliters.

[0061] (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 Zizania zizizia biochar microspheres were obtained by drying at the bottom;

[0062] (4) Weighing the hydrothermal Zizania zizizia biochar described in step (3), grinding and pulverizing it through a 100-mesh sieve to obtain the hydrothermal Zizania zizizania biochar microsphere powder;

[0063] (5) Weigh a certain amount of h...

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Abstract

The invention relates to a preparation method and an application of magnetic activated hydrothermal biochar microspheres. The method comprises the following steps: subjecting aquatic plant powder, an iron salt catalyst and deionized water to a hydrothermal reaction in a reaction kettle to prepare the hydrothermal biochar microspheres; completely mixing the hydrothermal biochar microspheres, FeCl3, ZnCl2 and the deionized water and drying the mixture; placing the dried mixture sample into a box type atmosphere furnace, performing final temperature pyrolysis at the target temperature under the condition of nitrogen protection, so as to prepare the magnetic activated hydrothermal biochar microspheres. The magnetic activated hydrothermal biochar microspheres prepared by the method can effectively adsorb and remove a large amount of heavy metal lead and copper in water, the composite material prepared by the method can also be added into soil containing excess amounts of lead and copper, the biological effectiveness of lead and copper in the soil is reduced, and the purpose of controlling heavy metals is achieved.

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 microspheres. 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 ...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/28B01J20/30C10B53/02C02F1/28C02F1/62B09C1/00
CPCB01J20/20B01J20/28009B01J20/28021B09C1/00C02F1/281C02F1/283C10B53/02Y02E50/10Y02E50/30
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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