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Preparation method of modified magnetic bamboo fiber composite adsorbent

A bamboo fiber composite and adsorbent technology, applied in chemical instruments and methods, alkali metal compounds, alkali metal oxides/hydroxides, etc., can solve the problems of non-degradable properties of anionic dyes, poor stability, etc., and achieve active groups The effect of many, good acid resistance and short elution time

Inactive Publication Date: 2020-08-18
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In dye wastewater, some dyes have poor stability and will degrade naturally. Some acid dyes (such as arsenazo I, arsenazo III, chlorophosphine azo III, acid red 52, etc.) anionic dyes are stable and cannot be degraded. Eliminate contamination by separation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Bamboo fiber pretreatment: In the reactor, add deionized water: 760 mL, hydrochloric acid: 85 mL, sodium chloride: 60g, mix well, add bamboo fiber powder: 80g, soak at room temperature, 24h, heat up Constant temperature at 80±2°C, stirring, reacting for 60min, solid-liquid separation, washing with deionized water, drying to obtain pretreated bamboo fiber powder;

[0023] (2) Preparation of magnetic bamboo fiber composite balls: In the reactor, add N,N-dimethylacetamide: 830 mL, polyvinylidene fluoride: 70 g, raise the temperature to 65±2°C, stir and dissolve, Carboxylated ferroferric oxide magnetic nanoparticles: 50 g, pretreated bamboo fiber powder: 100 g, ultrasonically dispersed for 30 min, sprayed the viscous suspension liquid in water through a nozzle to solidify, soaked in water for 16 h, separated solid and liquid, and used Ionized water washing, drying, obtains magnetic bamboo fiber composite ball;

[0024] (3) Preparation of modified magnetic bamboo fiber ...

Embodiment 2

[0026] (1) Bamboo fiber pretreatment: In the reactor, add deionized water: 78 mL, hydrochloric acid: 7 mL, sodium chloride: 4g, mix well, add bamboo fiber powder: 10g, soak at room temperature, 24h, heat up Constant temperature at 80±2°C, stirring, reacting for 60min, solid-liquid separation, washing with deionized water, drying to obtain pretreated bamboo fiber powder;

[0027] (2) Preparation of magnetic bamboo fiber composite balls: In the reactor, add N,N-dimethylacetamide: 85 mL, polyvinylidene fluoride: 6 g, raise the temperature to 65±2°C, stir and dissolve, Carboxylated ferroferric oxide magnetic nanoparticles: 6g, pretreated bamboo fiber powder: 8g, ultrasonically dispersed for 30 minutes, sprayed the viscous suspension liquid in water through a nozzle to solidify, soaked in water for 16 hours, separated solid and liquid, and deionized Washing with water and drying to obtain magnetic bamboo fiber composite balls;

[0028] (3) Preparation of modified magnetic bamboo f...

Embodiment 3

[0030] (1) Bamboo fiber pretreatment: In the reactor, add deionized water: 370 mL, hydrochloric acid: 50 mL, sodium chloride: 40g, mix well, add bamboo fiber powder: 30g, soak at room temperature, 24h, heat up Constant temperature at 80±2°C, stirring, reacting for 60min, solid-liquid separation, washing with deionized water, drying to obtain pretreated bamboo fiber powder;

[0031] (2) Preparation of magnetic bamboo fiber composite balls: In the reactor, add N,N-dimethylacetamide: 405mL, polyvinylidene fluoride: 40g, raise the temperature to 65±2℃, stir and dissolve, carboxyl Ferroferric oxide magnetic nanoparticles: 32g, pretreated bamboo fiber powder: 60g, ultrasonically disperse for 30 min, spray the viscous suspension liquid in water through a nozzle to solidify, soak in water for 16 h, separate solid and liquid, use deionized Washing with water and drying to obtain magnetic bamboo fiber composite balls;

[0032] (3) Preparation of modified magnetic bamboo fiber composite...

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Abstract

The invention discloses a preparation method of a modified magnetic bamboo fiber composite adsorbent, which is characterized by comprising the following steps: pretreating bamboo fiber powder by hydrochloric acid and sodium chloride to obtain pretreated bamboo fiber powder; adopting pretreated bamboo fiber powder, polyvinylidene fluoride and carboxylated ferroferric oxide magnetic nanoparticles toprepare magnetic bamboo fiber composite spheres; then, in a reactor, and respectively adding 83-87% of 1, 4-dioxane solvent and 8-12% of magnetic bamboo fiber composite spheres, soaking for 24 hours,stirring, adding 4-6% of 1-(2-aminoethyl) pyrrolidine, heating to 50 + / -2 DEG C, reacting at constant temperature for 4 hours, carrying out solid-liquid separation, soaking in a NaON solution, washing and drying to obtain the modified magnetic bamboo fiber composite adsorbent. The adsorbing material has selective adsorption on arsenazo III, chloroazo III and acid red 52, has good mechanical properties, has good chemical stability, is high in adsorption speed and easy to elute, and has regeneration capacity.

Description

technical field [0001] The invention relates to a preparation method and application technology of an adsorption material, in particular to a preparation method and application of a modified magnetic bamboo fiber composite adsorbent, and belongs to the technical field of separation material application. Background technique [0002] Bamboo fiber is a cellulose fiber extracted from naturally growing bamboo, and it is the fifth largest natural fiber after cotton, hemp, wool and silk. Bamboo fiber has the characteristics of good air permeability, instant water absorption, strong wear resistance and good dyeability, and has natural antibacterial, antibacterial, anti-mite, deodorant and anti-ultraviolet functions. The breadth and availability of resources are mainly reflected in the short growth period of bamboo, which can be matured in 2 to 3 years and can be planted for a long time. Bamboo can grow up to 3 feet overnight. It can grow and renew quickly, and can replace bamboo. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30B01J20/28
CPCB01J20/22B01J20/24B01J20/261B01J20/265B01J20/28009B01J20/28019
Inventor 李慧芝冯娟娟杨春霞
Owner UNIV OF JINAN
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