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Device and method for detecting adsorption performance of biochar material

A biochar and adsorption performance technology, which is applied in the direction of material analysis using acoustic emission technology, can solve the problems of long measurement time, cumbersome procedures, and high cost, and achieve the effects of short detection time, wide application range, and low price

Active Publication Date: 2021-08-06
ZHEJIANG FORESTRY ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a biochar material adsorption performance detection device and method to solve the existing problems of cumbersome procedures, high cost and long measurement time

Method used

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  • Device and method for detecting adsorption performance of biochar material
  • Device and method for detecting adsorption performance of biochar material
  • Device and method for detecting adsorption performance of biochar material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Example 1: The audio envelope value is used for the determination of the adsorption performance of carbon materials

[0053] figure 2 The blank peak diagram provided for Example 1 of the present invention. image 3 The adsorption peak diagram of the biochar material sample with an iodine adsorption value of 210 mg / g provided in Example 1 of the present invention. figure 2 and image 3 The abscissa of is the collection time in seconds, and the ordinate is the average peak value of the collected audio signal in v. Will figure 2 and image 3 From the comparison, it can be seen that when the charcoal first enters the liquid, the waveform expands rapidly, reaches the peak value rapidly, and then decays rapidly. Finally, the sound wave gradually becomes flat and finally melts into the background clutter. The complete process can last for about 15 minutes , but the peak peak and rapid fall are generally completed within 15 seconds after the carbon enters the water liqu...

Embodiment 2

[0059] Embodiment 2: decibels are used for the determination of the adsorption performance of carbon materials

[0060] Decibel (dB, deciBel) is a unit in electrical and acoustical measurement, that is, the ratio of two electric or sound powers or the ratio of two voltage or current values ​​or similar sound quantities. However, digital music uses full-scale level, that is, the maximum value allowed by 16bit sampling ±32767 is taken as 0dB (reference point), that is, the critical point where "digital overload" may occur is taken as the reference point. In such a standard , most of the actual levels are negative.

[0061] Figure 5 The blank dB value diagram provided for the second embodiment of the present invention. Image 6 The dB value diagram of the adsorption audio signal of the biochar material sample with an iodine adsorption value of 210 mg / g provided in Example 2 of the present invention. Figure 5 and Image 6 The abscissa of is the collection time, the unit is s...

Embodiment 3

[0065] Example three: DP value is used for the determination of carbon material adsorption performance

[0066] DP (dipprobability) is the probability that the root mean square of the sound wave energy is attributed to the background energy. The smaller the DP value, the greater the difference between the sound of carbon adsorbed in water and the background sound. Otherwise, it means that the difference between the sound and the background is not large, and it is easy to be disturbed by the background sound. . Figure 8 The blank DP value diagram provided for Example 3 of the present invention. Figure 9 The DP value chart of the adsorption audio signal of the biochar material sample with an iodine adsorption value of 210 mg / g provided in Example 3 of the present invention. Figure 8 and Figure 9 The abscissa of is the collection time in seconds, and the ordinate is the DP value of the collected audio signal. Figure 10The DP probability diagram of the adsorption process o...

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Abstract

The invention discloses a device and method for detecting the adsorption performance of a biomass carbon material, which collects the wave vibration audio signal generated by the adsorption reaction of carbon in water through an audio collector, and utilizes the wave vibration information generated by the adsorption of carbon samples with different adsorption properties in water As the basis for judging the quality of the carbon adsorption performance, the iodine adsorption value of the sample of the biochar material to be tested is determined, so as to reliably characterize the adsorption performance of the biochar material. Compared with the existing method, the method of the present invention has the following characteristics: 1, the used instrument of the detection device of the present invention is cheap, and the experimental consumables only use water in the detection process, so it is widely applicable; 2, the detection time is short, and the whole test The analysis process does not exceed 15 minutes, and the iodine adsorption value of the biochar material sample to be tested can be directly obtained through simple operations, which can be directly read conveniently and the test results are more intuitive; 3. The biochar material samples used are basically Non-destructive, the sample can be restored to its original shape after drying and dehydration.

Description

technical field [0001] The invention relates to the technical field of non-destructive testing, in particular to a device and method for detecting the adsorption performance of biomass carbon materials. Background technique [0002] In contemporary society, environmental issues have attracted more and more attention, and biochar materials are ideal materials for air purification. The adsorption performance of biochar materials directly determines its ability to purify the air, and the existing methods for determining the adsorption performance of biochar materials mainly include two categories, one is to use specific surface area adsorption instrument to characterize the adsorption performance of carbon materials The advantage of this type of method is that it is accurate in measurement and can characterize the isothermal adsorption and desorption curves of carbon materials. The disadvantage is that the specific surface area adsorption instrument is relatively expensive, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N29/14
CPCG01N29/14
Inventor 潘炘庄晓伟蒋应梯于海霞张文福王进
Owner ZHEJIANG FORESTRY ACAD
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