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Bio-adsorbent for treating dye wastewater and preparation method therefor and application thereof

A biosorbent, dye wastewater technology, applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., can solve problems such as production, life and health adverse effects, waste of biomass resources, waste of resources and the environment , to achieve excellent adsorption effect, large adsorption capacity and high treatment efficiency

Inactive Publication Date: 2015-12-23
NANYANG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If these by-products are not handled properly, it will cause waste of resources and environmental pollution, adversely affect people's production, life and health, and cause waste of biomass resources

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0032] The present invention also provides a preparation method of the biosorbent for treating dye wastewater, comprising the following steps:

[0033] 1) Wash 35-40 parts by weight of edible fungus waste, 22-30 parts by weight of bamboo shoot waste, 20-25 parts by weight of grapefruit peel, and 5-12 parts by weight of tea leaves, then dry and pulverize , passing through a 20-40 mesh sieve to obtain biomass material coarse powder;

[0034] 2) Add an alkali solution with a concentration of 0.5-5 mol / L to the coarse powder of biomass material obtained in step 1), stir for 36-48 hours, and filter to obtain the activated product;

[0035]3) Wash the activated product obtained in step 2) with distilled water until neutral, dry, add citric acid solution with a concentration of 0.5~0.8mol / L, soak for 12~18h, then stir at 70~75°C for 3~5h, Filtration obtains the modified product;

[0036] 4) Wash the modified product obtained in step 3) to neutrality with distilled water, dry, then ...

Embodiment 1

[0051] A preparation method and application of a biosorbent for treating dye wastewater, comprising the following steps:

[0052] 1) Wash 35 parts by weight of edible fungus waste, 22 parts by weight of bamboo shoot waste, 20 parts by weight of pomelo peel, and 5 parts by weight of tea leaves with distilled water, then dry and pulverize, pass through a 20-40 mesh sieve, Obtain biomass material coarse powder;

[0053] 2) Add sodium hydroxide solution with a concentration of 0.5mol / L to the coarse powder of biomass material obtained in step 1), the mass volume ratio of coarse powder of biomass material to sodium hydroxide solution is 10g / L, stir for 36h, and filter get the activated product;

[0054] 3) Wash the activated product obtained in step 2) until neutral, dry, add a citric acid solution with a concentration of 0.5mol / L, the mass volume ratio of the activated product to the citric acid solution is 15g / L, soak for 12h, and then Stirring at 70°C for 3h, filtering to obta...

Embodiment 2

[0060] A preparation method and application of a biosorbent for treating dye wastewater, comprising the following steps:

[0061] 1) Wash 36 parts by weight of edible fungus waste, 24 parts by weight of bamboo shoot waste, 22 parts by weight of pomelo peel, and 6 parts by weight of tea leaves with distilled water, then dry and pulverize, pass through a 20-40 mesh sieve, Obtain biomass material coarse powder;

[0062] 2) Add potassium hydroxide solution with a concentration of 1mol / L to the coarse powder of biomass material obtained in step 1), the mass volume ratio of coarse biomass material to potassium hydroxide solution is 15g / L, stir for 40h, and filter to obtain activation product;

[0063] 3) Wash the activated product obtained in step 2) until neutral, dry, add a citric acid solution with a concentration of 0.6mol / L, the mass volume ratio of the activated product to the citric acid solution is 16g / L, soak for 14h, and then Stir at 72°C for 3.5h, and filter to obtain t...

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Abstract

The invention provides a bio-adsorbent for treating dye wastewater and a preparation method therefor and application thereof and belongs to the technical field of dye wastewater treatment. The bio-adsorbent contains the raw materials in parts by weight: 35-40 parts of edible fungus waste, 22-30 parts of bamboo shoot waste, 20-25 parts of pomelo peel and 5-12 parts of tea leaves. The preparation method comprises the steps of pretreating the raw materials, then, adding aqueous alkali into the pretreated raw materials, carrying out stirring, washing an activated product with water until the activated product is neutral, drying the washed activated product, then, adding a citric acid solution to soak the activated product, carrying out heating stirring, washing a modified product with water until the modified product is neutral, drying the modified product, then, adding an alcoholic solution to soak the modified product, carrying out ultrasonic wave assisted treatment, washing a product with water until the product is neutral, and drying and crushing the product, thereby obtaining the bio-adsorbent for treating the dye wastewater. According to the application of the bio-adsorbent in the treatment of the dye wastewater, the bio-adsorbent is added into a dye aqueous solution for oscillatory reaction, and filtering separation is carried out, so as to complete adsorption removal for the dye aqueous solution. According to the bio-adsorbent for treating the dye wastewater and the preparation method therefor and the application thereof, the problem of environmental pollution is solved, the resourcing of the wastes is realized, and the aim of treating wastes with wastes is achieved.

Description

technical field [0001] The invention belongs to the technical field of dye wastewater treatment, and in particular relates to a biosorbent for treating dye wastewater, a preparation method and an application thereof. Background technique [0002] With the rapid development of industries such as textiles, leather, plastics, and paper, the demand for dyes is increasing day by day, and the resulting dye wastewater is also increasingly harmful to the environment. The environmental pollution caused by dye wastewater is increasingly threatening people's lives. health and life safety. [0003] Dye wastewater has complex components, often containing a variety of organic dyes and their intermediates, deep chroma, high toxicity, poor biodegradability, large pH fluctuations, large component changes, and high concentrations, so it has always been a difficult problem for industrial wastewater treatment. Dye wastewater also has "mutagenic, teratogenic and carcinogenic" effects. The comm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30C02F1/28
Inventor 郭永明胡凤萍马勤阁
Owner NANYANG NORMAL UNIV
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