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Preparation method and application of zirconium hydroxide modified magnetic biochar adsorption material

A technology of zirconium hydroxide and adsorption materials, which is applied in the fields of alkali metal oxides/hydroxides, chemical instruments and methods, and alkali metal compounds, and can solve problems such as difficult phosphorus-containing sewage treatment

Inactive Publication Date: 2020-10-23
安徽汇泽通环境技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a preparation method and application of zirconium hydroxide modified magnetic biochar adsorption material, which overcomes the difficulty in the treatment of phosphorus-containing sewage in the prior art, and provides a cheap, excellent, stable, environmentally friendly, Easily recyclable material for phosphorus removal in water

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The preparation method of zirconium hydroxide modified magnetic biochar includes the following steps:

[0028] (1) After drying, the raw pineapple skin powder is chopped with a rotary cutter, sieved through 80 mesh, washed with water to neutrality, and then dried. The dried pineapple skin powder is heated in a muffle furnace at 300°C for 1 hour. The biochar is obtained by washing and drying.

[0029] (2) Add 5 g of biochar to 100 mL of a mixed solution containing 10 mmol of ferrous chloride and 10 mmol of ferric chloride, and stir 1 mol / L NaOH solution into the above suspension under a strong magnetic field water bath at 60°C for 1 hour. , Until the pH value rises to 10, continue stirring at 80°C for 1 hour, wash with water to neutrality, and dry to obtain magnetic biochar.

[0030] (3) Stir 2g of magnetic biochar in 50mL of water for 0.5h to obtain a magnetic biochar suspension, then dissolve 20mmol of zirconium nitrate in 50mL of isopropanol, add it to the magnetic biochar ...

Embodiment 2

[0038] The preparation method of zirconium hydroxide modified magnetic biochar includes the following steps:

[0039] (1) After drying, the raw pineapple peel powder is chopped with a rotary cutter, sieved through 100 mesh, washed with water to neutrality, and then dried. The dried pineapple peel powder is heated in a muffle furnace at 300°C for 1 hour. Washing and drying to obtain biochar.

[0040] (2) Add 5g of biochar into the mixed solution of ferrous chloride and ferric chloride at a ratio of 1:1, stir in a strong magnetic field water bath at 60°C for 1 hour, and add 1mol / L NaOH solution dropwise to the above suspension In the middle, until the pH value rises to 10, continue to stir at 80°C for 1 hour, wash with water to neutrality, and dry to obtain magnetic biochar.

[0041] (3) Stir 1 g of magnetic biochar in 50 mL of water for 0.5 h to obtain a magnetic biochar suspension. Subsequently, 1mmol, 2.5mmol, 5mmol, 10mmol, 15mmol of zirconium nitrate were dissolved in 50mL of is...

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Abstract

The invention discloses a preparation method and application of a zirconium hydroxide modified magnetic biochar adsorption material, and belongs to the technical field of water treatment. The preparation method of the adsorption material comprises the following steps: carbonizing pineapple peel, and modifying with a ferric salt solution to prepare magnetic biochar; loading zirconium hydroxide on the magnetic biochar through an impregnation method to prepare the zirconium hydroxide modified magnetic biochar adsorption material. The defects in the prior art are overcome, the pineapple peel is turned into treasure through the prepared adsorption material, and the adsorption material has advantages of high phosphorus adsorption capacity, easy recovery, good selectivity, good stability and cyclic utilization.

Description

Technical field [0001] The invention relates to the technical field of adsorption materials, in particular to a preparation method and application of a zirconium hydroxide modified magnetic biochar adsorption material. Background technique [0002] Phosphorus is one of the essential nutrients for animals, plants and the human body, and it has important physiological functions. However, with the increasing intensification of industrial production and human activities, excessive phosphorus entering the water body will cause the rapid propagation of algae, resulting in eutrophication of the water body and a serious threat to the ecological environment. Therefore, phosphorus pollution has attracted more and more attention. [0003] The adsorption method is one of the important methods for the removal of phosphorus in water. The physical adsorption, chemical adsorption and complexation between the porous solid adsorbent and phosphorus are used to remove phosphorus from the water. Its m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30B01J20/28C02F1/28C02F101/10
CPCB01J20/06B01J20/20B01J20/28009C02F1/281C02F1/283C02F2101/105
Inventor 孙黎马力马瑶
Owner 安徽汇泽通环境技术有限公司
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