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Preparation method for biomimetic nanometer magnetic water treatment agent

A nano-magnetic, water treatment agent technology, applied in adsorption water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve problems such as single adsorption or catalytic function, high cost of raw materials, and difficulty in recycling , to achieve the effect of easy recycling, low cost, and low cost of use

Inactive Publication Date: 2016-01-20
CHANGZHOU OPTICAL MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem mainly solved by the present invention: most of the currently commonly used solid sulfonic acid heavy metal ion water treatment agents use petroleum and other non-renewable carbon sources as raw materials. The defect is to provide an enzyme-like nano-magnetic water treatment agent. The method uses granular millet as a base material, adopts a decompression carbonization method, and dehydrates and dehydrogenates carbonization by controlling the carbonization temperature, heating rate and holding time, and maintains Three-dimensional porous structure and suitable organic surface structure, the sulfonic acid group is bonded on the controlled particle millet charcoal to prepare millet charcoal sulfonic acid, and then iron oxide is deposited on the millet carbon sulfonic acid carrier by oxidation precipitation method to prepare An enzyme-like nano-magnetic water treatment agent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0023] Take 50g of millet, expose it to the sun for 3 days and dry it, put it in a 500mL round bottom flask, evacuate it with a water-type vacuum pump, let it stand for 1h, then move it into a temperature-programmed furnace, and first heat it up to 250 at a rate of 40℃ / min ℃, keep for 30min; then heat up to 350℃ at a rate of 0.8℃ / min, keep for 90min, carbonize the millet, cool to room temperature, place the carbonized millet in a desiccator for storage; take 10g of the carbonized millet prepared above Put it into a 500mL beaker, then add 20% sulfur trioxide-containing fuming sulfuric acid at a mass ratio of 1:5, stir slowly with a glass rod, then move the beaker into a water bath, heat up to 80℃, keep it warm for 3h, Carbonized millet is subjected to sulfonation treatment; the sulfonated millet is cooled to room temperature, filtered and washed with double distilled water for 3 times, then the millet is transferred to an Erlenmeyer flask, 200mL of deionized water is added, and t...

example 2

[0026] Take 80g of millet, expose it to the sun for 3 days and dry it, put it in a 500mL round bottom flask, evacuate it with a water-type vacuum pump, let it stand for 1h, then move it into a temperature-programmed furnace, and first heat it up to 250 at a rate of 43℃ / min ℃, keep for 45min; then heat up to 350℃ at a rate of 0.8℃ / min, keep for 95min, carbonize the millet, after cooling to room temperature, place the carbonized millet in a desiccator for storage; take 13g of the carbonized millet prepared above Put it into a 500mL beaker, then add 25% sulfur trioxide-containing fuming sulfuric acid at a mass ratio of 1:5, stir it evenly with a glass rod, then move the beaker into a water bath, heat up to 85°C, keep it warm for 3h, The carbonized millet is sulfonated; the sulfonated millet is cooled to room temperature, filtered and washed with double distilled water for 4 times, then the millet is transferred to an Erlenmeyer flask, 250mL deionized water is added, and the sulfona...

example 3

[0029] Take 100g of millet, expose it to the sun for 4 days and dry it, put it in a 500mL round bottom flask, evacuate it with a water-type vacuum pump, let it stand for 2h, then move it into a temperature-programmed furnace, and first heat it to 250 at a rate of 45℃ / min ℃, keep for 60min; then heat up to 350℃ at a rate of 0.9℃ / min, keep for 100min, carbonize the millet, after cooling to room temperature, place the carbonized millet in a desiccator for storage; take 15g of the carbonized millet prepared above Put it into a 500mL beaker, then add 30% sulfur trioxide-containing fuming sulfuric acid in a mass ratio of 1:5, stir slowly with a glass rod, then move the beaker into a water bath, heat up to 90℃, keep it warm for 4h, Carbonized millet is subjected to sulfonation treatment; the sulfonated millet is cooled to room temperature, filtered and washed with double distilled water for 5 times, then the millet is transferred to an Erlenmeyer flask, 300mL deionized water is added, ...

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Abstract

The invention relates to a preparation method for a biomimetic nanometer magnetic water treatment agent, and belongs to the technical field of water treatment agents. According to the method, granular millet serves as a base material; a depressurization carbonization method is adopted, dehydration and dehydrogenation are performed by controlling the carbonization temperature, the heating rate and the heat preservation time to achieve carbonization, and a three-dimensional porous structure and a suitable organic surface structure are kept; sulfo groups are bonded to controlled granular millet carbon to prepare millet carbon sulfoacid; then, iron oxide is deposited on a millet carbon sulfoacid carrier through an oxidation-precipitation method to prepare the biomimetic nanometer magnetic water treatment agent. The raw materials of the prepared water treatment agent are easy to get and low in cost, and the water treatment agent is large in specific area and high in adsorption capacity and has a high removal rate for COD and chroma in wastewater.

Description

Technical field [0001] The invention relates to a preparation method of an enzyme-like nano magnetic water treatment agent, and belongs to the technical field of water treatment agents. Background technique [0002] At present, domestic and foreign heavy metal ion wastewater mainly adopts a two-stage treatment process based on biological methods. After the wastewater undergoes secondary treatment, there are still many difficult-to-biodegradable organics in the water body, which has become a difficulty in the treatment of heavy metal ion wastewater. With the increasing environmental protection requirements, the state has put forward stricter requirements on the discharge of major pollutants in the wastewater. The existing secondary treatment process can no longer meet the increasingly stringent environmental protection requirements, and the green advanced treatment of heavy metal ion wastewater has become the focus of industrial water pollution control. [0003] Advanced oxidation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/30C02F1/28C02F101/20
Inventor 陈毅忠林大伟
Owner CHANGZHOU OPTICAL MATERIAL
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