Preparation of copper-aluminum bimetal oxide modified bamboo charcoal fiber composite material and application of composite material in removing ammonia nitrogen from water

A bimetallic oxide and bamboo charcoal fiber technology is applied in the direction of water pollutants, other chemical processes, water/sewage treatment, etc. It can solve a large number of bamboo leaf wastes and other problems, reduce preparation costs, facilitate recycling, and have good application prospects Effect

Pending Publication Date: 2020-11-24
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the actual application process, a large amount of bamboo leaf waste is often produced

Method used

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  • Preparation of copper-aluminum bimetal oxide modified bamboo charcoal fiber composite material and application of composite material in removing ammonia nitrogen from water
  • Preparation of copper-aluminum bimetal oxide modified bamboo charcoal fiber composite material and application of composite material in removing ammonia nitrogen from water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A kind of preparation method of copper-aluminum double metal oxide modified bamboo charcoal fiber composite material, comprises the steps:

[0029] a) Soak the crushed bamboo leaves in sodium hydroxide solution at 20°C for 2 hours, remove impurities, wash the obtained yellow filamentous biomass fiber with deionized water for 3 times, add acetic acid acidified sodium hypochlorite solution and soak 2h, obtain white fiber (BF);

[0030] b) Prepare a 0.1mol / L aluminum nitrate solution, soak the obtained white fibers for 4 hours, filter them, dry the obtained samples and calcinate them at 250°C for 1 hour under nitrogen to obtain alumina-coated biochar fibers (Al 2 o 3 / BF);

[0031] c) According to the solid-to-liquid ratio of 0.1g:0.1g:0.05g:50mL, copper nitrate, Al 2 o 3 / BF, hexamethylenetetramine was dissolved in deionized water, and after fully stirring, the uniform suspension was transferred to a stainless steel reaction kettle, and after reacting at 60°C for 6 ho...

Embodiment 2

[0036] A kind of preparation method of copper-aluminum double metal oxide modified bamboo charcoal fiber composite material, comprises the steps:

[0037] a) Soak the crushed bamboo leaves in sodium hydroxide solution at 40°C for 4 hours, remove impurities, wash the obtained yellow filamentous biomass fiber with deionized water for 3 times, add acetic acid acidified sodium hypochlorite solution and soak 6h, obtain white fiber (BF);

[0038] b) Prepare a 0.4mol / L aluminum nitrate solution, soak the obtained white fiber for 6 hours, filter it, dry the obtained sample and calcinate it at 500°C for 4 hours under nitrogen to obtain alumina-coated biochar fiber (Al 2 o 3 / BF);

[0039] c) According to the solid-to-liquid ratio of 0.3g:0.6g:0.25g:75mL, copper nitrate, Al 2 o 3 / BF, hexamethylenetetramine dissolved in deionized water, after fully stirring, transfer the uniform suspension to a stainless steel reaction kettle, react at 120°C for 6 hours, filter, wash, and dry the prod...

Embodiment 3

[0044] A kind of preparation method of copper-aluminum double metal oxide modified bamboo charcoal fiber composite material, comprises the steps:

[0045] a) Soak the crushed bamboo leaves in sodium hydroxide solution at 80°C for 4 hours, remove impurities, wash the obtained yellow filamentous biomass fiber with deionized water for 3 times, add acetic acid acidified sodium hypochlorite solution and soak 5h, obtain white fiber (BF);

[0046] b) Prepare a 0.5mol / L aluminum nitrate solution, soak the obtained white fiber for 8 hours, filter it, dry the obtained sample, and calcinate it at 500°C for 2 hours under nitrogen to obtain alumina-coated biochar fibers (Al 2 o 3 / BF);

[0047] c) According to the solid-to-liquid ratio of 0.6g:0.3g:0.5g:75mL, copper nitrate, Al 2 o 3 / BF, hexamethylenetetramine dissolved in deionized water, after fully stirring, transfer the uniform suspension to a stainless steel reaction kettle, react at 90°C for 10h, filter, wash, and dry the produc...

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Abstract

The invention belongs to the technical field of composite materials, relates to the preparation of modifier biomass charcoal, and specifically relates to a preparation method of a copper-aluminum bimetal oxide modified bamboo charcoal fiber composite material. The method comprises: immersing crushed bamboo leaves in a sodium hydroxide solution to remove impurities, adding acetic acid acidified sodium hypochlorite, and obtaining white fiber; preparing aluminum nitrate solution, conducting filtration and drying after immersing the white fiber, and performing calcination in nitrogen; and dissolving copper nitrate, Al2O3/BF and hexamethylenetetramine in deionized water according to a solid-to-liquid ratio of 0.1-1.5 g : 0.1-0.9 g : 0.05-1.0 g : 50-200 mL, conducting stirring, hydrothermal reaction at 60-150 DEG C for 6-12 hours, filtration and washing, and then performing calcination at 250-600 DEG C for 2-8 hours after drying to obtain the composite material. According to the present invention, Cu-Al/BF is applied to remove ammonia nitrogen pollutants in water bodies. In the invention, bamboo leaf biomass resources are utilized to prepare Cu-Al/BF through hydrothermal and calcination,the ammonia nitrogen in the water bodies is effectively removed at room temperature, the material can be recycled, the preparation cost is minimized, and the adsorption performance is improved.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and relates to the preparation of modified biomass carbon materials, in particular to the preparation of copper-aluminum double metal oxide modified bamboo charcoal fiber composite materials and its application for removing ammonia nitrogen in water. Background technique [0002] At present, the problem of water resources has become a global problem. Human beings cannot survive without water. However, due to the rapid growth of population and the pollution of developing industrialization, the available water resources for human beings have become very limited. Especially the water pollution caused by ammonia nitrogen and its compounds. In many countries and regions around the world, the ammonia nitrogen content in the wastewater produced by factories is too high, which causes the ammonia nitrogen content in the natural water body to exceed the standard, which poses a huge threat to the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30C02F1/28C02F101/16
CPCB01J20/20B01J20/08B01J20/06C02F1/283C02F1/281C02F2101/16
Inventor 袁俊杰王纪章朱瑶邱凤仙吴杰义张涛李萍萍
Owner JIANGSU UNIV
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