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Adsorbing material for removing organic-bound heavy metal ions in water and preparation method thereof

A technology of heavy metal ions and adsorption materials, applied in chemical instruments and methods, adsorption water/sewage treatment, water pollutants, etc., can solve the problem of rare organically bound heavy metals in the removal, and achieve improved adsorption and bridging Linking effect, large adsorption capacity, and high stability

Inactive Publication Date: 2018-07-03
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Most of the above-mentioned studies focus on the removal of heavy metal ions in water, but there are few studies on organically bound heavy metals that are common in natural water bodies and are more difficult to remove.

Method used

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  • Adsorbing material for removing organic-bound heavy metal ions in water and preparation method thereof
  • Adsorbing material for removing organic-bound heavy metal ions in water and preparation method thereof
  • Adsorbing material for removing organic-bound heavy metal ions in water and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] Example 1: Preparation of modified silicon-based mesoporous materials, that is, preparation of ordered mesoporous silicon materials without template removal

[0072] 1. Preparation of acidic surfactant solution

[0073] Weigh the surfactant polyethylene oxide-polypropylene oxide-polyethylene oxide triblock copolymer (P123) (5g) and disperse it in 50mL deionized water, then add the acidic solution, stir and mix evenly to obtain Acidic surfactant solution; Wherein, acidic solution is the hydrochloric acid solution 100ml that concentration is 2mol / L, and the concentration of surfactant solution is 0.0057mol / L.

[0074] In the embodiment of the present invention, the concentration of the surfactant solution in the acidic surfactant solution is 0.0057 mol / L as an example for illustration, and other concentrations of 0.003-0.009 mol / L are applicable to the present invention. The acidic solution added in the present invention is except hydrochloric acid solution, other acidic...

Embodiment 2

[0087] Example 2: Preparation of manganese-based hybrid silicon-based mesoporous materials, that is, preparation of manganese oxide hybrid ordered mesoporous silicon materials

[0088] 1. Weigh 4g of potassium permanganate, dissolve it in 400ml of deionized water, and prepare an aqueous solution of potassium permanganate with a concentration of 1% by mass;

[0089] The mass percent concentration of potassium permanganate aqueous solution in the embodiment of the present invention is illustrated by taking 1% as an example, other potassium permanganate solutions ≤ 10% are applicable to the present invention, preferably 1-5%;

[0090] 2. Weigh 2 g of the modified silicon-based mesoporous material (P123-SBA-15) prepared in Example 1, add it to an aqueous potassium permanganate solution with a concentration of 1%, stir at room temperature, and perform an in-situ oxidation-reduction reaction for 4 hours , manganese oxide is loaded on the modified silicon-based mesoporous material, w...

Embodiment 3

[0099] Example 3: Preparation of doped manganese-based silicon-based mesoporous adsorption material, that is, manganese-based mesoporous adsorption material doped with characteristic organic molecules

[0100] 1. Weigh 2 g of manganese-based hybrid silicon-based mesoporous material (Mn-SBA-15), disperse it in 200 mL of organic solvent (anhydrous toluene or anhydrous ethylbenzene), and prepare manganese-based hybrid silicon-based Mesoporous material-toluene system, and placed in a four-necked flask, heated and stirred under the protection of inert protective gas nitrogen, the system was heated to the boiling point of anhydrous toluene or anhydrous ethylbenzene, and kept in a reflux state, wherein, The ratio of the mass of manganese-based hybrid silicon-based mesoporous material to the volume of organic solvent is 1:100, that is, 1 g of manganese-based hybrid silicon-based mesoporous material is dispersed in 100 ml of organic solvent anhydrous toluene or anhydrous ethylbenzene; ...

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Abstract

The invention discloses an adsorbing material for removing organic-bound heavy metal ions in water and a preparation method thereof, belonging to the fields of water treatment technologies and application. The preparation method of the adsorbing material comprises the following steps: performing hydrothermal synthesis on a surfactant and a silicon source material to prepare a modified silicon-based mesoporous material; carrying out an in-situ redox reaction to prepare a manganese-based hybrid silicon-based mesoporous material; and finally, adopting a chemical doping reaction, thereby obtainingthe organosilane doped manganese and silicon-based mesoporous adsorbing material. The adsorbing material disclosed by the invention has high adsorption activity on the organic-bound heavy metal ionsin water, is high in adsorption capacity of the organic-bound heavy metal ions in the water, high in removal efficiency and wide in application range, and is applicable to adsorption of the organic-bound heavy metal ions under acidic and weakly alkaline conditions.

Description

field of invention [0001] The invention relates to an adsorbent for removing organically bound heavy metal ions in water, in particular to a manganese-based mesoporous adsorption material doped with characteristic organic molecules and a preparation process thereof, belonging to the field of water treatment technology and application. Background of the invention [0002] With the acceleration of my country's industrialization process, the long-term accumulation of heavy metal pollution problems in recent years has gradually emerged. Some river basins and regions have prominent heavy metal pollution, and major pollution incidents have occurred frequently. High, the natural ecology and human survival are facing serious threats, and have caused serious social impact. The monitoring results show that there are heavy metals exceeding the standard in some state-controlled sections in 15 provinces in my country. The main pollution items are mercury, lead, zinc, arsenic, cadmium, cop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26C02F1/28B01J20/30C02F101/20
CPCB01J20/06B01J20/103B01J20/264C02F1/288C02F2101/20
Inventor 王洪杰宋孟梁帅王毅力向超
Owner BEIJING FORESTRY UNIVERSITY
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