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Method for tracing and identifying charcoal based on spectrum technology

A spectroscopic technique, biochar technology, applied in the field of biochar traceability and identification

Inactive Publication Date: 2012-12-26
海宁市盐官工业投资有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

However, there are no literature reports on the rapid traceability and identification of biochar by using spectral technology.

Method used

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  • Method for tracing and identifying charcoal based on spectrum technology
  • Method for tracing and identifying charcoal based on spectrum technology
  • Method for tracing and identifying charcoal based on spectrum technology

Examples

Experimental program
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Embodiment Construction

[0062] The following 14 sources of biochar were collected, including 7 types of agricultural waste (corn, rice bran, peanut shell, hickory nut shell, rice straw, wheat straw), 4 types of forestry waste (moso bamboo, edible fungus residue, sawdust , caragana), 1 type of household garbage, 1 type of biochar compound fertilizer, and 1 type of breeding excrement (pig manure). For convenience, Table 1 lists the Chinese and English names and abbreviations of these biochars.

[0063] Table 1

[0064]

[0065] The biochar was finely ground with a mortar to obtain samples with a particle diameter of less than 0.1 mm. Ten samples of each biochar were prepared, and a total of 140 samples were used for analysis and testing.

[0066] The biochar sample measurement device consists of a Maya2000Pro spectrometer produced by Ocean Optics, a 10W halogen light source, a transmission fiber, a sample holder, a computer, and a power supply. The wavelength range is 350-1100 band. The optical ...

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Abstract

The invention discloses a method for tracing and identifying charcoal based on a spectrum technology, which comprises the following steps of: (1) building a charcoal modeling spectrum library; (2) carrying out principal component analysis for the charcoal modeling spectrum library, and taking the front three principal components according to the variance contribution rate of principal components; (3) calculating a three-dimensional central coordinate of the charcoal variety according to the score values of the front three principal components; (4) scanning the spectrum of a sample to be identified; (5) carrying out principal component analysis for the spectrum of the sample to be identified, extracting the front three principal components and calculating the mahalanobis distances between the front three principal components and the central coordinates of the varieties according to the variance contribution rate of the principal components; and (6) classifying the sample to be identified to the corresponding charcoal varieties according to the minimal mahalanobis distance between the sample to be identified and the central coordinate of each variety, thereby finishing the identifying and tracing of the charcoal. The invention belongs to a method for monitoring machine learning, achieves the aim of quickly tracing and identifying the charcoal through the optical indirect testing and numerical value processing ways, so that the method can be applied to the laboratories or the job sites.

Description

technical field [0001] The invention relates to a biochar traceability and identification method based on spectrum technology. Background technique [0002] Biochar is a product formed after incomplete combustion and pyrolysis of biomass under anoxic conditions. It has extremely low solubility, large porosity and specific surface area, and strong adsorption, oxidation resistance and biodegradation resistance. Biochar plays a significant role in improving soil fertility, soil carbon sequestration, increasing sinks and reducing emissions, and remediating polluted environments. The physical and chemical properties of biochar are not only affected by process parameters such as temperature, time, and strength in the carbonization process, but also related to biomass materials. According to reports such as Xu (Xu R, Xiao S, Yuan J, et al.Adsorption of methyl violet from aqueous solutions by the biochars derived from crop residues.Bioresource Technology,2011,102(22):10293-10298.),...

Claims

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Application Information

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IPC IPC(8): G01N21/31
Inventor 杨海清
Owner 海宁市盐官工业投资有限公司
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