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Biomass charcoal ammonia-nitrogen treatment material and preparation method thereof

A technology of biomass charcoal and ammonia nitrogen, which is applied in water/sewage treatment, chemical instruments and methods, adsorption water/sewage treatment, etc. It can solve the problems that the concentration of ammonia nitrogen cannot be satisfied, the adsorption capacity is not large, and the removal effect is not obvious. Achieve the effects of low preparation cost, increased specific surface area, and no secondary pollution

Active Publication Date: 2018-06-01
EAST CHINA JIAOTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Simple biochar materials show a certain adsorption capacity, but because the biochar materials only adsorb through the pores, the adsorption capacity is not large, and the removal effect is not obvious, so it is even more unable to meet the increasing ammonia nitrogen concentration. Therefore, it is necessary to By preparing adsorption-catalysis dual-functional materials to solve the current pollution level, the number of eutrophic lakes, rivers and reservoirs can be reduced by reducing the concentration of ammonia nitrogen in the water body, so as to achieve the purpose of protecting drinking water sources

Method used

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  • Biomass charcoal ammonia-nitrogen treatment material and preparation method thereof
  • Biomass charcoal ammonia-nitrogen treatment material and preparation method thereof
  • Biomass charcoal ammonia-nitrogen treatment material and preparation method thereof

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preparation example Construction

[0034] Such as figure 1 As shown, the preparation method of the biomass charcoal ammonia nitrogen treatment material provided by the embodiment of the present invention comprises the following steps:

[0035] S101: Calculated by adding 5-10 g of biomass raw materials per 100 mL of alkali solution, add the biomass raw materials into the alkali solution with a mass fraction of 2 wt % to 8 wt %, stir for 2 to 6 hours at 50 to 80 ° C, and then take out And wash with deionized water to neutral, dry; prepare 1wt% ~ 10wt% NaClO 2 solution, adjust the pH value to 2-4 with an acid solution, and disperse the above dried sample in NaClO 2 Bleach in the solution, stir at 60-85°C for 3-5 hours, then wash with deionized water and ethanol until neutral, dry in an oven at 60-80°C for 4-6 hours to obtain the pretreated sample;

[0036] S102: Take out the sample and place it in HNO with a volume fraction of 0.5% to 5%. 3 (65% ~ 68%) solution, activated in the environment of 60 ~ 90 ℃ for 2 ~...

Embodiment 1

[0045] The preparation method of the biomass charcoal ammonia nitrogen treatment material that the embodiment of the present invention provides comprises the following steps:

[0046] a) Add 5g of biomass raw material per 100mL of alkaline solution, add cyanobacteria into a sodium hydroxide solution with a mass fraction of 5wt%, stir for 2 hours at 50°C, take it out and wash it with deionized water until neutral, and dry it . Prepare 1wt% NaClO 2 solution, adjust the pH value to 2 with hydrochloric acid, and disperse the above dried sample in NaClO 2 Bleach was carried out in the solution, stirred at 60°C for 3 hours, then washed with deionized water and ethanol until neutral, and dried in an oven at 60°C for 4 hours to obtain a pretreated sample.

[0047] b) Take out the sample and place it in 0.5% HNO by volume 3 (65%-68%) solution, activated in an environment of 60° C. for 2 hours, and then cleaned with deionized water and ethanol until neutral. Assuming that 5g of samp...

Embodiment 2

[0051] The preparation method of the biomass charcoal ammonia nitrogen treatment material that the embodiment of the present invention provides comprises the following steps:

[0052] a) Adding 6g of biomass raw material per 100mL of alkali solution, adding Enteromorpha to a potassium hydroxide solution with a mass fraction of 6wt%, stirring for 3 hours at 55°C, taking it out and washing it with deionized water until neutral, drying. Prepare 3wt% NaClO 2 solution, adjust the pH value to 2 with nitric acid, and disperse the above dried sample in NaClO 2 Bleach was carried out in the solution, stirred at 65°C for 3 hours, then washed with deionized water and ethanol until neutral, and dried in an oven at 65°C for 4 hours to obtain a pretreated sample.

[0053] b) Take out the sample and place it in HNO with a volume fraction of 1% 3 (65%-68%) solution, activated in an environment of 70° C. for 3 hours, and then cleaned with deionized water and ethanol until neutral. Assuming...

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Abstract

The invention belongs to the technical field of water pollution control materials and discloses a biomass charcoal ammonia-nitrogen treatment material and a preparation method thereof. The biomass charcoal ammonia-nitrogen treatment material is prepared from biomass charcoal, hierarchical-structured Al2O3 nanosheets and CuO nano-particles, wherein a mass ratio of the biomass charcoal, the hierarchical-structured Al2O3 nanosheets and the CuO nano-particles is 50:2-5:1-5. The raw materials are easily available, surface growth components and structure are controllable, adsorptive property is improved by increasing a specific surface area, and ammonia nitrogen is degraded through synergistic effect of Cu and Al; blue-green algae, green alga and diatom are taken as precursors of the biomass charcoal, the purposes of waste control by waste as well as sustainable development are achieved, and besides, the material has the characteristics of being low in preparation cost, stable, free of secondary pollution and the like.

Description

technical field [0001] The invention belongs to the technical field of water pollution control materials, in particular to a biomass charcoal ammonia nitrogen treatment material and a preparation method thereof. Background technique [0002] With the development of industrialization, water pollution is becoming more and more serious, especially the ammonia nitrogen content in water is increasing year by year, resulting in eutrophication of water bodies, red tides in oceans, massive growth of algae in lakes and rivers, and a sharp drop in dissolved oxygen in water bodies. A large number of organisms have died, and the ecological balance of water bodies has been seriously damaged. Therefore, it is urgent to find materials and preparation methods for efficient and rapid removal of ammonia nitrogen. The traditional methods for removing ammonia nitrogen include air blowing method, biological treatment process, electrochemical oxidation, break point chlorination method and ion exc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/28B01J20/20B01J20/30C02F101/16
CPCB01J20/06B01J20/08B01J20/20C02F1/28C02F1/281C02F1/283C02F2101/16
Inventor 胡锋平王敏邱风仙彭小明张涛戴红玲罗文栋
Owner EAST CHINA JIAOTONG UNIVERSITY
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