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Modified wood chip adsorbent, and preparation method and application thereof in treating wastewater containing basic dye

A basic dye and adsorbent technology, applied in the field of water pollution treatment, can solve the problems of high manufacturing cost, limited source of raw materials, low adsorption capacity, etc., and achieve the effects of small usage, low cost and high removal rate

Inactive Publication Date: 2014-02-12
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These agricultural and forestry wastes as adsorbents for wastewater treatment have the advantages of being renewable and degradable, and are important biological resources, but the disadvantages of low adsorption capacity, high manufacturing cost, and limited raw material sources limit their widespread use.

Method used

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  • Modified wood chip adsorbent, and preparation method and application thereof in treating wastewater containing basic dye
  • Modified wood chip adsorbent, and preparation method and application thereof in treating wastewater containing basic dye
  • Modified wood chip adsorbent, and preparation method and application thereof in treating wastewater containing basic dye

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The preparation method of modified sawdust adsorbent is as follows:

[0026] (1) Collect waste camphor wood chips from wood processing plants, put 500g of camphor wood chips into a large beaker, add deionized water to wash and filter, repeat 3 times until the filtrate becomes clear and free of turbidity, and after solid-liquid separation, get Wet camphor wood chips were placed in a drying box, and dried to constant weight for 24 hours to obtain dry camphor wood chips. Using a high-speed pulverizer, crush the dry camphor wood chips obtained above into powder, and sieve to keep the particle size of the camphor wood chips between 45-75 mm to obtain the camphor wood chips powder. Take 10 g of camphor sawdust powder, add it to 200 mL of 1.1 mol / L oxalic acid solution, and shake at room temperature for 3 hours at a shaking speed of 200 rpm.

[0027] (2) After the reaction, the solid and liquid were separated, and the solids were dried at 60°C for 24 hours.

[0028] (3) The ...

Embodiment 2

[0032] The preparation method of modified sawdust adsorbent is as follows:

[0033] (1) Collect waste camphor wood chips from wood processing plants, put 500g of camphor wood chips into a large beaker, add deionized water to wash and filter, repeat 3 times until the filtrate becomes clear and free of turbidity, and after solid-liquid separation, get Wet camphor wood chips were placed in a drying box, and dried to constant weight for 24 hours to obtain dry camphor wood chips. Using a high-speed pulverizer, crush the dry camphor wood chips obtained above into powder, and sieve to keep the particle size of the camphor wood chips between 45-75 mm to obtain the camphor wood chips powder. Take 10 g of camphor sawdust powder, add it to 180 mL of 1.2 mol / L tartaric acid solution, and shake at room temperature for 3 hours at a shaking speed of 200 rpm.

[0034] (2) After the reaction, the solid and liquid were separated, and the solids were dried at 60°C for 24 hours.

[0035] (3) Th...

Embodiment 3

[0039] The preparation method of modified sawdust adsorbent is as follows:

[0040] (1) Collect waste camphor wood chips from wood processing plants, put 500g of camphor wood chips into a large beaker, add deionized water to wash and filter, repeat 3 times until the filtrate becomes clear and free of turbidity, and after solid-liquid separation, get Wet camphor wood chips were placed in a drying box, and dried to constant weight for 24 hours to obtain dry camphor wood chips. Using a high-speed pulverizer, crush the dry camphor wood chips obtained above into powder, and sieve to keep the particle size of the camphor wood chips between 45-75 mm to obtain the camphor wood chips powder. Take 10 g of camphor sawdust powder, add it to 240 mL of 1.0 mol / L citric acid solution, and shake at room temperature for 3 hours at a shaking speed of 200 rpm.

[0041](2) After the reaction, the solid and liquid were separated, and the solids were dried at 60°C for 24 hours.

[0042] (3) Raise...

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Abstract

The invention discloses a modified wood chip adsorbent, and a preparation method and an application of the modified wood chip adsorbent in treating wastewater containing basic dye. The preparation method of the modified wood chip adsorbent comprises the following steps: reacting wood chips with organic acid, drying, subsequently performing an esterification reaction, removing organic acid, and drying to obtain the modified wood chip adsorbent, wherein the organic acid is one or more of oxalic acid, citric acid or tartaric acid. The modified wood chip adsorbent has the characteristics that the materials are simple and easy to obtain, the adsorption quantity is large, the removal rate is high, and the like, and the modified wood chip adsorbent can be applied to treatment on wastewater, especially treatment on alkali dye wastewater; the used raw materials are cheap and easy to obtain, a preparation process is simple, free of pollution, low in cost and easy to industrialize, and the purpose of waste recycling is achieved.

Description

technical field [0001] The invention relates to the field of water pollution treatment, in particular to a modified sawdust adsorbent, a preparation method and its application in water pollution treatment. Background technique [0002] Dyes are widely used in dyeing industry, such as textile, paper, leather, wool and cosmetics. According to statistics, dyes discharged into the environment without proper treatment account for 15% of the world's total pollutant emissions. This kind of wastewater has the characteristics of deep color, strong odor, high COD content, and complex and changeable components. Once it is discharged into the water environment through various channels, it will directly or indirectly damage the ecological environment and cause serious harm to human health. Therefore, how to effectively solve the problem of environmental pollution caused by dye wastewater has become a hot and difficult point of concern. At present, the methods for treating dyes in waste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F103/30
Inventor 袁兴中王侯吴艳冷立健肖智华黄丹莲梁婕陈耀宁曾光明
Owner HUNAN UNIV
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