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Heavy metal ion high efficiency adsorbent, preparation method and application thereof

A technology of heavy metal ions and adsorbents, applied in the direction of non-metallic elements, chemical instruments and methods, adsorption water/sewage treatment, etc., can solve the problems of filter membrane clogging, low efficiency, increased operation difficulty and operating cost, etc., to overcome High cost, good governance effect

Active Publication Date: 2014-11-19
HUAIHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, for the above-mentioned adsorbent materials, there is a common disadvantage that the adsorbent is not easy to recover.
The traditional filtration method is inefficient and easy to clog the filter membrane, thus increasing the difficulty of operation and operating costs

Method used

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  • Heavy metal ion high efficiency adsorbent, preparation method and application thereof
  • Heavy metal ion high efficiency adsorbent, preparation method and application thereof
  • Heavy metal ion high efficiency adsorbent, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] 1. A high-efficiency adsorbent for heavy metal lead ions, which is a composite magnetic material TiP-SiO 2 -Fe 3 o 4 .

[0045] 2, the preparation method of the efficient adsorbent of heavy metal lead ion, it comprises the following steps:

[0046] (1) Add 4g FeCl to a 100mL beaker 2 4H 2 O crystals, add 60mL of absolute ethanol, stir to dissolve and set aside. Add 470mL of deionized water, 0.62g of solid sodium hydroxide (NaOH) and 0.4g of cetyltrimethylammonium bromide into a 500mL beaker, and dissolve them evenly. Slowly add the above dissolved FeCl under vigorous stirring 2 4H 2 O in absolute ethanol. Stop stirring after 5 minutes, and let it stand at 30°C for 30 minutes; slowly add 50mL concentrated ammonia water and 40mL tetraethyl orthosilicate to the above solution while stirring, raise the temperature to 45°C, stir for 6h, wash with deionized water until neutral, separate and dry at 60°C Dry at ℃ for later use.

[0047] (2) the Fe obtained by the abov...

Embodiment 2

[0050] 1. A high-efficiency adsorbent for heavy metal lead ions, which is a composite magnetic material TiP-SiO 2 -Fe 3 o 4 .

[0051] 2, the preparation method of the efficient adsorbent of heavy metal lead ion, it comprises the following steps:

[0052] (1) Add 8g FeCl to a 100mL beaker 2 4H 2 O crystals, add 120mL of absolute ethanol, stir to dissolve and set aside. Add 1000mL of deionized water, 1.2g of solid sodium hydroxide (NaOH) and 0.8g of cetyltrimethylammonium bromide into a 500mL beaker, and dissolve them evenly. Slowly add the above dissolved FeCl under vigorous stirring 2 4H 2 O in absolute ethanol. Stop stirring after 5 minutes, and let it stand at 30°C for 30 minutes; slowly add 100mL concentrated ammonia water and 80mL tetraethyl orthosilicate to the above solution under stirring, raise the temperature to 45°C, stir for 6h, wash with deionized water until neutral, separate and dry at 60°C Dry at ℃ for later use.

[0053] (2) the Fe obtained by the ab...

Embodiment 3

[0054] Example 3 lead ion adsorption removal test

[0055] Get 2 parts of industrial waste water containing 10L lead ion, drop into the TiP-SiO that the embodiment of the present invention 1 and embodiment 2 prepare respectively 2 -Fe 3 o 4 20 grams, adjust the reaction temperature to be 35°C, adjust the pH of the waste water to be 5, and the reaction time to be 120 minutes, respectively calculate the removal rates of lead ions in the waste water to be 90.2% and 90.7%, showing that the TiP-SiO prepared by the present invention 2 -Fe 3 o 4 The adsorbent has a good adsorption and removal of lead ions in wastewater.

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Abstract

The invention discloses a heavy metal ion high efficiency adsorbent, a preparation method and an application, the adsorbent is a composite magnetic material TiP-SiO2-Fe3O4. According to the invention, the optimum preparation method of the heavy metal ion adsorbent can be screened through a lot of experiments, mass tests verify that the heavy metal ion adsorbent has the advantages of economy, environmental protection, good lead ion adsorption and removing function with clearance of more than 90%, and desorption and regeneration; the heavy metal ion adsorbent can be widely used for lead ion adsorption treatment in high density waste water, disadvantages of high cost and low adsorption / removal efficiency in prior art can be solved, and the heavy metal ion adsorbent has important social effect and economic benefits.

Description

technical field [0001] The invention relates to a heavy metal treatment agent, in particular to a high-efficiency adsorbent for heavy metal ions and a preparation method thereof, belonging to the field of new environmental protection materials. Background technique [0002] Heavy metals such as lead are widely distributed in nature. It accounts for about 0.0016% in the earth's crust and is one of the first water pollutants. It is stable in nature and not easy to degrade. Excessive human intake will accumulate in the kidneys and liver, causing hemoglobin synthesis disorders and resulting in anemia. The US Environmental Protection Agency even considers lead as a "possible human carcinogen". my country's environmental protection department and the State Administration of Quality Supervision and Quarantine newly issued the "Lead and Zinc Industrial Pollutant Discharge Standard" (GB25466-2010) stipulates that the discharge standard of lead-containing wastewater from existing ente...

Claims

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Application Information

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IPC IPC(8): B01J20/10B01J20/30C02F1/28C02F1/62
Inventor 祝春水伏广龙
Owner HUAIHAI INST OF TECH
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