Method for detecting absorption effect of absorbent by adopting sulfydryl cotton

A technology of mercapto cotton and adsorbent, which is applied in the direction of color/spectral characteristic measurement, fluorescence/phosphorescence, material excitation analysis, etc. It can solve problems such as unsuitable screening of adsorbent, high cost of three waste treatment, troublesome configuration of absorption liquid, etc., to achieve control Effects of secondary pollution, less volatilization loss, and low cost

Inactive Publication Date: 2013-05-22
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The first method has a good detection effect, is accurate and direct, but the cost is too high and it is not suitable for screening adsorbents
The effect of the second method is not very good, and it is more troublesome to configure the absorption liquid, and the absorption liquid used for different heavy metals is also different
Although the price of 2-MeTHF is slightly higher than that of THF at present, the overall cost of using 2-MeTHF is lower than that of using THF due to its low boiling point, excellent water solubility, large loss, low recovery rate, high recovery cost, and high cost of three wastes.

Method used

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  • Method for detecting absorption effect of absorbent by adopting sulfydryl cotton
  • Method for detecting absorption effect of absorbent by adopting sulfydryl cotton
  • Method for detecting absorption effect of absorbent by adopting sulfydryl cotton

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Embodiment 1: the method for detecting adsorbent adsorption effect with mercapto cotton, concrete operations are as follows:

[0040] (1) Add 25ml of thioglycolic acid, 25ml of 2-methyl-tetrahydrofuran, 3ml of hydrogen sulfuric acid and 5ml of distilled water to a 150ml beaker in turn, mix well, wait until cooled to room temperature and transfer to a brown jar with 5g of absorbent cotton, cotton Evenly infiltrate and cover the bottle cap, put it in a constant temperature water bath, take it out after standing at 40°C for 4 days and nights, spread the cotton flat in a suction filter bottle with 2 layers of medium-speed filter paper, and wash it with deionized water until the washing water is neutral Afterwards, let it be dried at 40°C to obtain mercapto cotton, which is stored in a brown bottle for future use;

[0041] (2) Take 0.1 g of the prepared mercapto cotton, about 3 cm in length, stuff it into a U-shaped quartz tube 12 with an inner diameter of 8 mm, and connect ...

Embodiment 2

[0045] Embodiment 2: the method for detecting adsorbent adsorption effect with mercapto cotton, concrete operations are as follows:

[0046] (1) Add 30ml of thioglycolic acid, 20ml of 2-methyl-tetrahydrofuran, 2ml of hydrogen sulfuric acid and 4ml of distilled water to a 150ml beaker in turn, mix well, wait until cooled to room temperature and transfer to a brown jar with 5g of absorbent cotton, cotton Evenly infiltrate and cover the bottle cap, put it in a constant temperature water bath, take it out after 8 days and nights at 30°C, spread the cotton flat in a suction filter bottle with 2 layers of medium-speed filter paper, and wash it with deionized water until the washing water is neutral. Afterwards, let it be dried at 30°C to obtain mercapto cotton, which is stored in a brown bottle for future use;

[0047] (2) Take 0.1g of the prepared mercapto cotton, about 3cm in length, stuff it into a quartz tube with an inner diameter of 8mm, and connect it to the heavy metal fume ...

Embodiment 3

[0051] Embodiment 3: the method for detecting adsorbent adsorption effect with mercapto cotton, concrete operations are as follows:

[0052] (1) Add 18ml of thioglycolic acid, 15ml of 2-methyl-tetrahydrofuran, 4ml of hydrogen sulfuric acid and 3ml of distilled water to a 150ml beaker in turn, mix well, wait until cooled to room temperature and transfer to a brown jar with 5g of absorbent cotton, cotton Evenly infiltrate and cover the bottle cap, put it in a constant temperature water bath, take it out after standing at 50°C for 3 days and nights, spread the cotton flat in a suction filter bottle with 2 layers of medium-speed filter paper, and wash it with deionized water until the washing water is neutral. Afterwards, let it be dried at 50°C to obtain mercapto cotton, which is stored in a brown bottle for future use;

[0053] (2) Take 0.05g of the prepared mercapto cotton, about 2cm in length, stuff it into a quartz tube with an inner diameter of 8mm, and connect it to the he...

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Abstract

The invention discloses a method for detecting absorption effect of an absorbent by adopting sulfydryl cotton. The method is a follow-up analysis method for adsorption experiments of heavy metals (mercury, lead and cadmium) in waste incineration smoke. A tube containing the sulfydryl cotton is connected at the tail of a smoke experiment device for absorbing heavy metal for the follow-up adsorption analysis, the used sulfydryl cotton can adsorb the heavy metals strongly and is easy to wash out, the adsorption effect is obvious, the heavy metals in the smoke passing through the absorbent can be adsorbed completely, not only can the adsorption effect of the absorbent be detected accurately, but also the sulfydryl cotton used for heavy metal adsorption can be reused. The method is easy to operate, and the adsorption performance of various absorbents can be evaluated effectively, so that high quality absorbent which is low in cost and has mild reaction condition and good adsorption effect can be screened out, secondary pollution is effectively controlled and the method is safe and environment-friendly.

Description

technical field [0001] The invention relates to a method for detecting the adsorption effect of adsorbents by using mercapto cotton, which mainly focuses on the follow-up analysis of the adsorption experiments of heavy metals (mercury, lead, cadmium) in waste incineration flue gas, and further analyzes the adsorption effects of various adsorbents in the flue gas adsorption experiments. The effect is evaluated, and secondary pollution can be effectively controlled, which belongs to the field of air pollution control. Background technique [0002] There are many kinds of toxic heavy metals in municipal solid waste, such as mercury, cadmium, lead, zinc, copper, nickel, chromium, etc. Among them, the content of cadmium in each ton of waste is as high as 10-40g. The heavy metals in the garbage will be partly volatilized or completely volatilized and gasified during the incineration process, and then condensed with the cooling of the high-temperature flue gas. According to the vo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/25G01N21/64
Inventor 马丽萍毛宇陈建涛张杭戴取秀谢龙贵资泽城
Owner KUNMING UNIV OF SCI & TECH
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