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Preparation method and application of novel modified rubber seed shell biochar material

A technology for modifying rubber and rubber seed shells, which is applied in chemical instruments and methods, carbon compounds, ion exchange water/sewage treatment, etc., can solve the problems of high cost, high price, secondary pollution, etc., and achieve improved porosity, removal The effect of high efficiency and promotion of complexation reaction

Inactive Publication Date: 2021-08-31
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, although the chemical precipitation method is relatively simple and cost-effective, it is easy to cause secondary pollution
Although methods such as ion exchange and membrane separation have high removal rates, they are expensive and costly

Method used

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  • Preparation method and application of novel modified rubber seed shell biochar material
  • Preparation method and application of novel modified rubber seed shell biochar material
  • Preparation method and application of novel modified rubber seed shell biochar material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Preparation method and application of a novel modified rubber seed shell biochar material

[0026] (1) Crushing the rubber seed shell, passing the crushed rubber seed shell through a 40-mesh sieve to obtain rubber seed shell particles, and drying at 60° C. for 12 hours.

[0027] (2) The rubber seed shell particles dried in step (1) were pre-carbonized in a tube furnace, and the temperature was raised to a calcination temperature of 300°C at a constant rate of 5°C / min and then calcined at a constant temperature for 1h.

[0028] (3) Add the pre-carbonized material in step (2) to 100mL KMnO 4 solution beaker, here KMnO 4 The mass ratio of rubber seed shell carbon to rubber seed shell carbon was 1:1, and the above beaker was ultrasonically treated in an ultrasonic instrument for 1 h, and the mixture was dried in an oven at 60 °C after the ultrasonic was completed.

[0029] (4) Place the dried mixture in step (3) again in the tube furnace at a constant rate of 5°C / min to t...

Embodiment 2

[0031] Example 2: Preparation method and application of a novel modified rubber seed shell biochar material

[0032] (1) Crushing the rubber seed shell, passing the crushed rubber seed shell through a 60-mesh sieve to obtain rubber seed shell particles, and drying at 80° C. for 12 hours.

[0033] (2) The rubber seed shell particles dried in step (1) were pre-carbonized in a tube furnace, and the temperature was raised to a calcination temperature of 500°C at a constant rate of 5°C / min and calcined at a constant temperature for 1h.

[0034] (3) Add the pre-carbonized material in step (2) into 100mL KMnO 4 solution in the beaker, here KMnO 4 The mass ratio of rubber seed shell carbon to rubber seed shell carbon is 1:2. The above-mentioned beaker is ultrasonicated in an ultrasonic instrument for 1 hour, and the mixture is dried in an oven at 80°C after ultrasonication.

[0035] (4) Place the dried mixture in step (3) again in the tube furnace at a constant rate of 5°C / min to a ...

Embodiment 3

[0037] Example 3: Preparation method and application of a novel modified rubber seed shell biochar material

[0038] (1) Crushing the rubber seed shell, passing the crushed rubber seed shell through a 40-mesh sieve to obtain rubber seed shell particles, and drying at 70 °C for 12 h.

[0039] (2) The rubber seed shell particles dried in step (1) were pre-carbonized in a tube furnace, and the temperature was raised to a calcination temperature of 400 °C at a constant rate of 5 °C / min and then calcined at a constant temperature for 1 h.

[0040] (3) Add the pre-carbonized material in step (2) into 100mL KMnO 4 solution in the beaker, here KMnO 4 The mass ratio of rubber seed shell carbon to rubber seed shell carbon is 1:3, and the above beaker is ultrasonicated in an ultrasonic instrument for 1 hour, and the mixture is dried in an oven at 70°C after the ultrasonication is completed.

[0041] (4) Place the dried mixture in step (3) again in the tube furnace at a constant rate of...

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Abstract

The invention relates to a preparation method and application of a novel modified rubber seed shell biochar material, and belongs to the field of biomass carbon materials. The preparation method comprises the steps of: crushing, sieving and drying rubber seed shells to obtain rubber seed shell particles; putting the rubber seed shell particles into a tubular furnace for pre-carbonization; adding the pre-carbonized rubber seed shell biochar into a KMnO4 solution, and carrying out ultrasonic treatment for 1 hour; drying the mixture after ultrasonic treatment is finished; and calcining the dried material in a nitrogen atmosphere again, cleaning the carbonized biochar with deionized water, and drying the biochar to finally obtain the rubber seed shell biochar material. The novel modified rubber seed shell biochar material is applied to removal of heavy metal copper in sewage, and the removal rate of copper reaches 94%.

Description

technical field [0001] The invention belongs to the field of biomass carbon materials, and in particular relates to a preparation method and application of a novel modified rubber seed shell biochar material. Background technique [0002] One of the most serious environmental pollution problems today is water pollution. With the rapid development of industrial activities, water pollution caused by toxic metals in industrial wastewater discharge has become a serious environmental and public health problem. Among them, metallic copper is a relatively common pollutant in industrial wastewater. Industrial activities such as metal plating, smelting, and mining will discharge wastewater containing different concentrations of copper pollutants into the environment. Copper can cause harm to the ecological environment and the human body. Excessive intake of copper can lead to liver and kidney damage, chronic copper poisoning and brain damage in the human body. Therefore, it is part...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/324C01B32/354C02F1/28C02F1/42C02F1/62
CPCC01B32/324C01B32/354C02F1/283C02F1/42C02F1/62
Inventor 关清卿付秋丽何亮庙荣荣宁平
Owner KUNMING UNIV OF SCI & TECH
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