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Methylene blue removal adsorbent

A methylene blue and adsorbent technology, which is applied in the direction of adsorption of water/sewage treatment, water/sludge/sewage treatment, water pollutants, etc., can solve the problems of unsatisfactory adsorption effect and high price, and achieve obvious scale effect and structure effect, Increased specific surface area and good economic value

Inactive Publication Date: 2018-04-20
EAST CHINA JIAOTONG UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is, in order to make up for the shortcomings of existing methylene blue adsorbents such as high price and unsatisfactory adsorption effect, the present invention proposes a methylene blue adsorbent

Method used

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specific Embodiment approach

[0016] This embodiment is an adsorbent for removing methylene blue. The material is the garbage that has been buried in the landfill for 9 years, and is mainly composed of minerals and organic matter.

[0017] The methylene blue adsorbent is prepared by the following steps:

[0018] (1) Take the garbage that has been buried in the landfill for 9 years, and let it dry naturally. Then remove the larger stones, broken glass, incompletely degraded rubber plastics, wooden sticks, paper and other sundries.

[0019] (2) Select mineralized waste with a particle size of less than 2mm after sieving, heat it in an oven at 180°C for 1 hour, dry heat sterilization, put it in a desiccator and cool it to room temperature for use.

[0020] (3) Take 2.0mol / L sodium hydroxide solution, add it to the shaker container containing the cooled mineralized waste obtained in step (2), shake it in the desktop rotary shaker for 12 hours, and mix the sodium hydroxide solution with the mineralized waste ...

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Abstract

The invention discloses a methylene blue removal adsorbent which consists of minerals and organic matters. Through modification, the structure of the adsorbent is loosened, the specific surface area of the adsorbent is increased, active groups of the adsorbent are enriched, pore and gap structures of the adsorbent are improved, and the adsorbent has high affinity and adsorption selectivity upon methylene blue and is applicable to a wastewater with pH value of 9-10; the methylene blue removal rate is up to 96.27% after one hour of adsorption, and the adsorption balance time is four hours. Mineralized wastes are adopted as raw materials, the raw materials are very cheap and easy to obtain, in addition, the conventional reservoir capacity of a landfill is increased, the service life of the landfill is prolonged, the purpose of 'treating wastes with wastes' can be achieved, and relatively high economic values can be made. The methylene blue removal adsorbent is simple in preparation methodstep, applicable to large-scale production and wide in application prospect.

Description

technical field [0001] The invention relates to an adsorbent for removing methylene blue, which belongs to the technical field of adsorbents. Background technique [0002] In recent years, the discharge of methylene blue in wastewater from cotton spinning, silk and wood industries has aroused widespread concern from all walks of life. Methylene blue is one of the main pollutants in printing and dyeing wastewater. If the methylene blue solution is discharged into the surrounding water body, the light transmittance of the water body will decrease, and the photosynthesis of hydrated plants will also be weakened, thereby affecting the ecological balance of the water body. Methylene blue is a low-toxic substance. If it is inhaled accidentally, it will easily cause shortness of breath and difficulty. If it is ingested by mistake, it will produce a burning sensation when it passes through the digestive tract, which will cause nausea, vomiting, profuse sweating, mental confusion, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/02B01J20/30C02F1/28C02F101/36C02F101/38
CPCB01J20/02C02F1/281C02F2101/36C02F2101/38C02F2101/40
Inventor 唐朝春许荣明吴庆庆段先月
Owner EAST CHINA JIAOTONG UNIVERSITY
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