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Lead ion adsorption material and preparation method thereof

An adsorption material, lead ion technology, applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc. The effect of compatibility, low cost and simple preparation process

Inactive Publication Date: 2019-02-26
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these operating methods are often complex and costly, and the yield of activated carbon is also reduced after modification.
In addition, since the hydrophilic functional group is formed by strong oxidation between activated carbon and modifying reagents, the quality of activated carbon decreases significantly after modification, and the microporous structure before it is also severely damaged.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The preparation method of the lead ion adsorption material provided by the present embodiment 1 comprises the following steps:

[0027] Step 1. Preparatory material preparation:

[0028] Mix 20 parts of waste building asphalt, 20 parts of leaves and 50 parts of water as raw materials, stir with a stirrer for 5-20 minutes, then add 0.27 parts of magnesium salt (containing 1.25 mmol magnesium ions), 1.6 parts of aluminum salt solution (containing 2.5 mmol Aluminum ion), 0.63 parts of silicon-containing compound solution (containing 3.13 mmol silicon), and then add 1 part of sodium dodecylsulfonate and 20 parts of oleic acid as asphalt co-solvent, and stir for 20 minutes to prepare a preparatory material.

[0029] Step 2. Preparation of preparatory materials:

[0030] Move the prepared material into a tube furnace, and under the protection of a nitrogen atmosphere with a flow rate of 250ml / min, first raise the temperature to 80°C at a heating rate of 5°C / min, and then rai...

Embodiment 2

[0037] The preparation method of the lead ion adsorption material provided by this embodiment 2 comprises the following steps:

[0038] Step 1. Preparatory material preparation:

[0039] Mix 20 parts of waste building asphalt, 20 parts of leaves and 50 parts of water as raw materials, stir with a stirrer for 5-20 minutes, then add 0.54 parts of magnesium salt (containing 2.5 mmol of magnesium ions), 3.20 parts of aluminum salt solution (containing 5 mmol of aluminum ions), 1.25 parts of silicon-containing compound solution (containing 6.25 mmol silicon), then add 1 part of sodium dodecylsulfonate and 20 parts of oleic acid as asphalt cosolvent, and stir for 10 minutes to prepare the preparation;

[0040] Step 2. Preparation of preparatory materials:

[0041] Move the prepared material into a tube furnace, and under the protection of a nitrogen atmosphere with a flow rate of 250ml / min, first raise the temperature to 80°C at a heating rate of 5°C / min, and then raise the tempera...

Embodiment 3

[0048] The preparation method of the lead ion adsorption material provided in this embodiment three comprises the following steps:

[0049] Step 1. Preparatory material preparation:

[0050] Mix 20 parts of waste construction asphalt, 20 parts of leaves and 50 parts of water as raw materials, stir with a stirrer for 10 minutes, then add 1.08 parts of magnesium salt (containing 5 mmol magnesium ions), 6.4 parts of aluminum salt solution (containing 10 mmol of aluminum ions), 2.5 parts of silicon-containing compound solution (containing 7.5 mmol silicon), then add 1 part of sodium dodecylsulfonate and 20 parts of oleic acid as asphalt cosolvent, stir for 20 minutes, and prepare the preparation;

[0051] Step 2. Preparation of preparatory materials:

[0052] Move the prepared material into a tube furnace, and under the protection of a nitrogen atmosphere with a flow rate of 250ml / min, first raise the temperature to 80°C at a heating rate of 5°C / min, and then raise the temperatur...

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Abstract

The invention provides a lead ion adsorbing material capable of effectively adsorbing and removing lead ions in a water body and a preparation method thereof. The preparation method is characterized by comprising the following steps: 1. preparation of preparative material: mixing asphalt, tree leaves and water as raw materials, stirring uniformly, adding a magnesium salt, an aluminum salt, a siliceous compound and an asphalt cosolvent as auxiliary materials, and stirring uniformly to obtain the preparative material; 2. preparation of crude product: transferring the preparative material into a heater, heating to 60-100 DEG C at a first heating rate, heating to 120-180 DEG C at a second heating rate, heating to 250-500 DEG C at a third heating rate, continuing heating to 800-1000 DEG C at a fourth heating rate, carbonizing, and finally, cooling to room temperature, thereby obtaining the adsorbing material crude product; and 3. preparation of finished product: washing the adsorbing material crude product with an acid solution, filtering, washing with water to neutrality, and drying in a constant-temperature drying box to obtain the lead ion adsorbing material.

Description

technical field [0001] The invention belongs to the field of functional materials, and in particular relates to a lead ion adsorption material for removing lead ions in water bodies and a preparation method. technical background [0002] Lead is a toxic heavy metal, and lead pollution is very harmful to human body. Excess lead accumulated in the human body will lead to confusion in the nervous system, hematopoietic system, digestive system and reproductive system of the human body, and the harm to children is even more serious. Normal people's blood lead content is 0.15mg / kg, and reaching 0.6~0.8mg / kg just causes lead poisoning to take place arterial endarteritis, vasospasm, arteriosclerosis, neurological dysfunction, colic, mental dullness etc. (Chen Bingqing, Sun Chang. Food pollution and health [M]. Beijing: Chemical Industry Press, 2002.155-160.). Lead pollution mainly comes from the smelting of industrial lead, which is discharged through lead-containing wastewater an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/30C02F1/28C02F101/20
CPCB01J20/0248B01J20/0251B01J20/04B01J20/20B01J2220/485B01J2220/4875C02F1/281C02F2101/20
Inventor 陈璠童仕唐张春桃毛磊梅姝婷
Owner WUHAN UNIV OF SCI & TECH