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Method for preparing MgO/carbon composite adsorbing material by using lemon pulp and magnesium slag through one-step method

The technology of carbon composite material and adsorption material is applied in the field of preparing MgO/carbon composite adsorption material, which can solve the problems of crops, human and livestock being harmful, and achieve the effects of low cost, high adsorption efficiency and light weight.

Inactive Publication Date: 2017-11-28
NEIJIANG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the process of deep processing, a large amount of lemon residue will be produced, and the lemon residue is basically discarded, which is extremely harmful to crops, humans and animals.

Method used

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  • Method for preparing MgO/carbon composite adsorbing material by using lemon pulp and magnesium slag through one-step method
  • Method for preparing MgO/carbon composite adsorbing material by using lemon pulp and magnesium slag through one-step method
  • Method for preparing MgO/carbon composite adsorbing material by using lemon pulp and magnesium slag through one-step method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Weigh 10g of lemon residue and add it to a beaker filled with 300mL of magnesium residue solution with a concentration of 10g / L, then electric stir in a water bath at 80°C until most of the solvent evaporates, then place the beaker in an oven and dry at 60°C for 3h , collect samples at N 2 In an atmosphere furnace with a flow rate of 5mL / min, the temperature was raised to 400°C at a rate of 5°C / min and roasted for 5h to obtain a MgO / carbon composite material, which was denoted as 1-MgO / carbon composite material.

Embodiment 2

[0034] Weigh 10g of lemon residue and add it to a beaker filled with 300mL of magnesium residue solution with a concentration of 15g / L, then electric stir in a water bath at 85°C until most of the solvent evaporates, then place the beaker in an oven and dry at 60°C for 3h , collect samples at N 2 In an atmosphere furnace with a flow rate of 8mL / min, the temperature was raised to 500°C at a rate of 3°C / min and roasted for 5 hours to obtain a MgO / carbon composite material, which was denoted as 2-MgO / carbon composite material.

Embodiment 3

[0036]Weigh 10g of lemon residue and add it to a beaker filled with 300mL of magnesium residue solution with a concentration of 20g / L, then electric stir in a water bath at 75°C until most of the solvent evaporates, then place the beaker in an oven and dry at 60°C for 3h , collect samples at N 2 In an atmosphere furnace with a flow rate of 10mL / min, the temperature was raised to 600°C at a rate of 8°C / min and roasted for 4 hours to obtain a MgO / carbon composite material, which was denoted as 3-MgO / carbon composite material.

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Abstract

The invention belongs to the technical field of preparation of adsorbing materials, and particularly relates to a method for preparing a MgO / carbon composite adsorbing material by using lemon pulp and magnesium slag through a one-step method. The method comprises the following steps: (1) weighing a certain amount of lemon pulp, adding the lemon pulp in a magnesium slag solution, and stirring at constant temperature until water is evaporated completely to form uniform lemon magnesium slag; and (2) treating the formed lemon magnesium slag in an N2-atmosphere furnace at high temperature to obtain a MgO / carbon composite material. The MgO / carbon composite material prepared by the method has the advantages of light weight, good adsorption property, high adsorption efficiency, good performance of compounding with other inorganic compounds and the like. The formed MgO / carbon composite material is a water treatment agent with high adsorption ability, high efficiency, long service life and low cost, and industrial application of an inorganic material in the technical field of water treatment is broken through.

Description

technical field [0001] The invention belongs to the technical field of adsorption material preparation, in particular to a method for preparing MgO / carbon composite adsorption material by using lemon residue and magnesium residue in one-step method. Background technique [0002] Pollutants in water include inorganic pollutants and organic pollutants. Inorganic pollutants mainly include heavy metal ions such as lead, chromium, mercury, and copper. These heavy metal elements are difficult to degrade, easy to accumulate, irreversible, highly toxic, slow in metabolism, and easy to be bioaccumulated in the environment. Long-term drinking of water polluted by heavy metals can cause acute and chronic poisoning or cause cancer of the body. Organic pollutants mainly include oxygen-consuming non-toxic organic substances (such as protein, fat and carbohydrates, etc.) and toxic organic substances (such as phenolic compounds, organic pesticides and polycyclic aromatic hydrocarbons, dy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30C02F1/28
CPCB01J20/041B01J20/20C02F1/281
Inventor 郑小刚黄明付孝锦刘勇张金洋刘敏
Owner NEIJIANG NORMAL UNIV
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