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Humic acid type porous adsorption material and preparation method and application thereof

A technology of porous adsorption material and potassium humate, applied in the field of humic acid-type porous adsorption material and preparation thereof, can solve the problems of low efficiency of heavy metal ions and organic pollutants, limited specific surface area, secondary pollution, etc., and achieves enhanced adsorption or The effect of complexation

Active Publication Date: 2019-05-28
SHAANXI UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] In recent years, human health issues have received extreme attention, mainly focusing on drinking water safety and food safety. Therefore, the treatment of water and soil pollution is a serious problem facing human beings. This affects the adsorption efficiency of adsorbents in the pollution treatment process, Adsorption conditions, adsorption breadth and other properties put forward higher requirements. The currently widely used polymer resin adsorbents have a single material and function, limited specific surface area, and low efficiency in effectively removing heavy metal ions and organic pollutants from water or soil. , secondary pollution and other issues limit large-scale industrial applications

Method used

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  • Humic acid type porous adsorption material and preparation method and application thereof
  • Humic acid type porous adsorption material and preparation method and application thereof
  • Humic acid type porous adsorption material and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Weigh 1 part of potassium humate and 0.5 part of chitosan into a three-neck flask, add 40 parts of distilled water, turn on the stirring device to stir at a rate of 120 r / min, and at the same time raise the temperature from room temperature to 55 at a rate of 2 °C / min. ℃; add dropwise a solution prepared by dissolving 0.005 parts of potassium persulfate and 0.005 parts of N,N-methylenebisacrylamide in 20 parts of distilled water to the above reaction system, and control the dropping time for 35 minutes; Raise the temperature to 75°C at a heating rate of 1 / min, keep it for 5 minutes, add 2 parts of polyethylene glycol, and then stir at a speed of 100r / min, stop the reaction when the system becomes viscous and gel-like, and it is difficult to stir, and take out the product Drying is carried out at 75° C. to obtain a humic acid type porous adsorption material.

Embodiment 2

[0033] Weigh 2 parts of potassium humate and 0.5 parts of cellulose into a three-neck flask, add 50 parts of deionized water, turn on the stirring device to stir at a rate of 160r / min, and at the same time raise the temperature from room temperature at a rate of 4°C / min to 65°C; add dropwise a solution prepared by dissolving 0.16 parts of ammonium persulfate and 0.04 parts of N-methyldiethanolamine in 20 parts of distilled water to the above reaction system, and control the dropping time for 45 minutes; Raise the temperature to 80°C, keep it for 10 minutes, then add 3 parts of polyethylene glycol, and then stir at a speed of 120r / min, stop the reaction when the system becomes viscous and difficult to stir, take out the product and dry it at 80°C, A humic acid type porous adsorption material is obtained.

Embodiment 3

[0035] Weigh 3 parts of potassium humate and 1 part of cellulose into a three-necked flask, add 60 parts of deionized water, turn on the stirring device to stir at a rate of 130r / min, and at the same time raise the temperature from room temperature at a rate of 3°C / min to 60°C; add dropwise a solution prepared by dissolving 0.12 parts of ammonium persulfate and 0.03 parts of N-methyldiethanolamine in 20 parts of distilled water to the above reaction system, and control the dropping time for 40 minutes; then continue at a rate of 3°C / min Raise the temperature to 80°C, keep it for 8 minutes, add 4 parts of polyethylene glycol, and then stir at a rate of 110r / min, stop the reaction when the system becomes viscous and difficult to stir, take out the product and dry it at 80°C, A humic acid type porous adsorption material is obtained.

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Abstract

The invention discloses a humic acid type porous adsorption material and a preparation method and application thereof, and belongs to the technical field of preparation of materials and environmentalmanagement. The preparation method disclosed by the invention has the beneficial effects that the humic acid type porous adsorption material is prepared by using and dissolving raw materials of potassium humate and natural macromolecules, then adding a crosslinking agent and an initiating agent, dropwise adding polyethylene glycol under a heating condition, stirring and drying; the method is simple to operate; the raw materials are easy to obtain; the requirements on equipment are low; and the cost is low. In terms of the prepared porous adsorption material, humic acid is macromolecular organic acid composed of aromatics and multiple functional groups thereof, is naturally degradable, and has good biological activity and the functions of adsorption and absorption, complexation, exchange and the like, so that a formed porous structure is capable of enhancing the adsorption and complexation effects on heavy metal ion particle matters; when the porous adsorption material is applied to pollution management and ecological restoration, heavy metal in a water body and soil can be adsorbed; and after adsorption is finished, the porous adsorption material can be used as a soil fertilizer, and can improve soil structure, restore ecological balance and reduce chemical pollution.

Description

technical field [0001] The invention belongs to the technical field of material preparation and environmental treatment, and in particular relates to a humic acid type porous adsorption material and its preparation method and application. Background technique [0002] In recent years, human health issues have received extreme attention, mainly focusing on drinking water safety and food safety. Therefore, the treatment of water and soil pollution is a serious problem facing human beings. This affects the adsorption efficiency of adsorbents in the pollution treatment process, Adsorption conditions, adsorption breadth and other properties put forward higher requirements. The currently widely used polymer resin adsorbents have a single material and function, limited specific surface area, and low efficiency in effectively removing heavy metal ions and organic pollutants from water or soil. , secondary pollution and other issues limit the large-scale industrial application. Ther...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/28B01J20/30C02F1/28B09C1/00B09C1/08C02F101/20C02F101/30
Inventor 宋洁马展牛育华黄良仙柯如媛
Owner SHAANXI UNIV OF SCI & TECH
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