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Cadmium pollution adsorbent and preparation method thereof

An adsorbent and cadmium pollution technology, which is applied in the field of environmental engineering, can solve the problems of difficult separation, small manganese dioxide particles, and limited use range, etc., to achieve enhanced adsorption effect, increase adsorption capacity, increase ion exchange and complexation Effect

Inactive Publication Date: 2018-02-16
安徽铭能保温科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, manganese dioxide particles are small and difficult to separate, which limits its application range

Method used

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Examples

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Comparison scheme
Effect test

Embodiment Construction

[0019] A cadmium pollution adsorbent prepared by the following method:

[0020] (1) Naturally air-dry the brown algae and pulverize it, add 30% benzenesulfonic acid solution twice the weight of the brown algae to it, heat up to 45°C under constant stirring, cool to room temperature after 150 minutes of reaction, continue stirring for 1 hour, filter and clear water Rinse well, dry and pulverize until the particle size is less than 80 mesh for later use;

[0021] (2) Put the magnesia into a high-temperature furnace, bake it at 500°C for 60 minutes, take it out after cooling, crush it through a 30-mesh sieve, put it into clean water and boil it for 30 minutes, cool to room temperature and filter to remove floating ash and impurities in the water , and then placed in a drying oven to dry for 10 hours, the dried powder was added to the potassium permanganate solution with a mass fraction of 2.7% according to the solid-to-liquid ratio of 1:25g / mL, soaked for 7 hours, filtered out an...

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Abstract

The invention discloses a cadmium pollution adsorbent and a preparation method thereof. The cadmium pollution adsorbent is prepared from raw materials of brown alga, glucose, magnesite, tetraethoxysilane, ferroferric oxide powder and the like. According to the cadmium pollution adsorbent and the preparation method thereof, the brown alga is used as a biological adsorbent, and the adsorption capacity of the brown alga is increased by crosslinking modification; the brown alga is combined with the modification magnesite under the adhesion of the glucose, and then carries manganese dioxide throughimpregnation of potassium permanganate to add ion exchange and complexing for cadmium to repair cadmium pollution. Compared with the prior art, the cadmium pollution adsorbent disclosed by the invention realizes relatively high adsorption efficiency and achieves a relatively good repair effect under a condition of use of a small number of repair agent, and no pollution is caused to the environment.

Description

technical field [0001] The invention relates to the technical field of environmental engineering, in particular to a cadmium pollution adsorbent and a preparation method thereof. Background technique [0002] Due to metal mining, metal smelting, metal industry, metal corrosion, waste disposal, agricultural application, use of preservatives in the wood industry, and burning of fossil fuels, soil heavy metal pollution in my country is prominent. According to the survey, the over-standard rate of cultivated land in my country is 19.4%, of which the proportions of slightly, lightly, moderately and heavily polluted sites are 13.7%, 2.8%, 1.8% and 1.1%, respectively, among which heavy metal cadmium is the main pollution contributing factor. After entering the human body, cadmium will accumulate in the body, damage the kidney function, and cause systemic pain. It is a typical "three-cause" substance. The treatment of cadmium pollution has become a hot topic in the environmental fie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22C02F1/28C02F1/52C02F1/54B09C1/00C02F101/20
CPCB01J20/041B01J20/06B01J20/22B01J2220/4843B09C1/00C02F1/281C02F1/286C02F1/52C02F1/5236C02F1/54C02F2101/20
Inventor 杨华亮
Owner 安徽铭能保温科技有限公司
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