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Preparation method and application of aquatic plant charcoal-carbon nanotube composite material

A technology of aquatic plants and carbon nanotubes, applied in water pollutants, chemical instruments and methods, water/sewage treatment, etc., can solve problems such as poor adsorption capacity, achieve high adsorption performance, reduce transportation costs, and low prices

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

AI Technical Summary

Problems solved by technology

Solve the problem of poor adsorption capacity for heavy metals Pb and Cu in the prior art

Method used

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  • Preparation method and application of aquatic plant charcoal-carbon nanotube composite material
  • Preparation method and application of aquatic plant charcoal-carbon nanotube composite material
  • Preparation method and application of aquatic plant charcoal-carbon nanotube composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Al

[0034] (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;

[0035] (2) Weigh the reed powder described in step (1), put the powder in a box-type atmosphere furnace, and pass nitrogen gas into the furnace, the nitrogen flow rate is 400 mL / min; the heating rate is controlled at 10 °C / min, and the temperature is programmed to To 500°C, keep the final temperature and continue pyrolysis for 60 minutes; after the pyrolysis process is over, reed biochar can be obtained;

[0036] (3) The carbon nanotube suspension was prepared by adding 2 g of carbon nanotube powder prepared in advance into 100 mL of deionized water;

[0037] (4) The carbon nanotube suspension described in step (3) is ultrasonically treated with an ultrasonic homogenizer, the output frequency is 20 kHz per hour, the pulse interval is 15 min, and the ultrasonic time is 1 h;

[0038] (5) Weigh 1 g of reed biochar d...

Embodiment A2

[0041] (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;

[0042] (2) Weigh the cattail powder described in step (1), place the powder in a box-type atmosphere furnace, and feed nitrogen into the furnace at a nitrogen flow rate of 400 mL / min; control the heating rate at 10 °C / min, and program the temperature to To 500°C, keep the final temperature and continue pyrolysis for 60 minutes; after the pyrolysis process is over, Typha biochar is obtained;

[0043] (3) The carbon nanotube suspension was prepared by adding 2 g of carbon nanotube powder prepared in advance into 100 mL of deionized water;

[0044] (4) The carbon nanotube suspension described in step (3) is ultrasonically treated with an ultrasonic homogenizer, the output frequency is 20 kHz per hour, the pulse interval is 15 min, and the ultrasonic time is 1 h;

[0045] (5) Weigh 1 g of Typha biochar describ...

Embodiment A3

[0048] (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;

[0049] (2) Weigh the asparagus powder described in step (1), put the powder in a box-type atmosphere furnace, and pass nitrogen gas into the furnace, the nitrogen flow rate is 400 mL / min; the heating rate is controlled at 10 °C / min, the program Raise the temperature to 500°C, and keep the final temperature for pyrolysis for 60 minutes; after the pyrolysis process is over, the Zizinia japonica biochar is obtained;

[0050] (3) The carbon nanotube suspension was prepared by adding 2 g of carbon nanotube powder prepared in advance into 100 mL of deionized water;

[0051] (4) The carbon nanotube suspension described in step (3) is ultrasonically treated with an ultrasonic homogenizer, the output frequency is 20 kHz per hour, the pulse interval is 15 min, and the ultrasonic time is 1 h;

[0052] (5) Weigh 1 g of Zizani...

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Abstract

The invention relates to a preparation method and application of an aquatic plant charcoal-carbon nanotube composite material. The preparation method comprises the following steps that aquatic plant charcoal and carbon nanotube suspension liquid are mixed and stirred sufficiently, then, drying and pyrolysis are carried out, and the aquatic plant charcoal-carbon nanotube composite material is obtained. The carbon nanotube suspension liquid is suspension liquid obtained by carrying out ultrasonic treatment on carbon nanotube powder put in deionized water. The aquatic plant charcoal and the carbon nanotube suspension liquid are fully mixed and dried, and then the aquatic plant charcoal-carbon nanotube composition material is obtained under the anaerobic high-temperature condition. The composite material prepared through the method can effectively adsorb a large amount of Pb and Cu in water. The composite material prepared through the method can be added into soil with exceeding Pb and Cu to reduce the bioavailability of the Pb and Cu in the soil, and the purpose of resisting and preventing heavy metal 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 an aquatic plant biochar-carbon nanotube composite material. 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, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30C02F1/28C02F1/62B09C1/00C02F101/20
CPCB01J20/20B01J20/205B09C1/00C02F1/281C02F1/288C02F2101/20
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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