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Calcium adsorbing material and its preparation method

An adsorption material, calcium-based technology, applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., can solve the problems of long decolorization cycle, etc., achieve the effect of low processing cost, simple preparation method, and cheap price

Inactive Publication Date: 2008-11-26
上海绿帝环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has the advantages of no waste and complete utilization, but the decolorization period is long and has certain requirements for the environment, thus limiting its application

Method used

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  • Calcium adsorbing material and its preparation method
  • Calcium adsorbing material and its preparation method
  • Calcium adsorbing material and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0020] Example 1: Cationic dye wastewater treatment

[0021] Prepare 3 basic dye samples in a 10ml colorimetric tube: malachite green (chroma 828), ethyl violet (chroma 1000), methylene blue (chroma 385), add 0.1%, 0.3%, 0.5% respectively % adsorption material, after precipitation for 30min, the measured data are shown in Table 1. It can be seen that only 0.1% of the material can absorb more than 94% of the color, and the sedimentation is fast.

[0022] Table 1 Adsorption experimental data of three dyes

[0023]

example 2

[0024] Example 2: POPs wastewater treatment

[0025] Three mixed samples of PAHs were prepared in a 10ml colorimetric tube: 1.49ppm phenanthrene, 1.69ppm fluorene, 1.36ppm biphenyl. Add 0.1%, 0.3%, and 0.5% of adsorbent material respectively, and after 1 h of precipitation, analyze each component, and the calculated data are shown in Table 2. It can be seen that the removal rate of biphenyl is lower than that of phenanthrene and fluorene. Adding 0.5% material can adsorb more than 60% PAHs organic matter. Therefore, the material has a good adsorption effect on hydrophobic organics.

[0026] Table 2 Chromatographic determination data of each component of PAHs

[0027]

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Abstract

The invention discloses a technology for preparing clathration adsorbing material by utilizing raw material containing calcium as the skeleton. The raw material containing calcium (calcium oxide, calcium chloride, calcium sulphate, calcium carbonate, etc.) in the medium of a colloidizing agent is mixed with sodium carbonate or carbon dioxide in the air to react in water solution. An acid red 138 organic matter is adopted as clathration material and precipitation and separation are carried out to prepare calcium-based adsorbing material, thereby being used for absorbing and separating dyes, organic pollutants, heavy metals, and the like, thus having important application value in the fields of industrial waste water disposal, useful resource recovery, etc. The technology can utilize waste water and wastes of enterprises as raw materials to realize the resource recycling of wastes. The technology of the invention has the advantages of low cost of raw materials, the simple preparation method, materials with good absorbing performance, low processing costs and easy settlement separation, and the like while waste residues can be dissolved by acid to retrieve useful materials.

Description

Technical field: [0001] The invention belongs to the field of environmental materials, in particular to an adsorption material for dyes, organic pollutants and heavy metals in industrial waste water. Background technique: [0002] A large amount of wastewater is discharged into the environment in the production process of dyes, medicine, chemical industry, smelting, electroplating, etc. High concentrations of organic matter and heavy metals have brought serious disasters to human beings and the ecological environment. For example, over 10,000 dyes have been produced commercially, of which 5-10% of the amount used is discharged into the aqueous environment. Most of the dye molecules contain aromatic structures, which are resistant to light, heat, and oxidation. Some dyes can cause allergies, dermatitis, skin redness, and even induce cancer and gene mutation. At present, there are 11 kinds of carcinogenic dyes on the market, which are divided into azo type, anthraquinone type...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/04C02F1/28C02F1/62
Inventor 郜洪文
Owner 上海绿帝环保科技有限公司
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