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A simulation device for the movement and migration of biochar in the soil system

A simulation device, biochar technology, applied in measurement devices, instruments, scientific instruments, etc., can solve problems such as restricting the research and development of biochar migration mechanism, and achieve the effects of small footprint, simple operation and good sealing performance

Active Publication Date: 2017-01-25
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the research on the movement, migration and deposition release mechanism of biochar in the soil environment is an emerging interdisciplinary subject that is closely combined with experiments, in order to obtain convincing results, special instruments must be used for experiments, and there is no ready-made set of instruments in China. use, which restricts the development of research on the mechanism of biochar migration in soil

Method used

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  • A simulation device for the movement and migration of biochar in the soil system
  • A simulation device for the movement and migration of biochar in the soil system
  • A simulation device for the movement and migration of biochar in the soil system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1: see Figure 4 According to the present invention, a simulation device for the movement and migration of biochar in a soil system includes a raw water tank 1, a water pump 2, a pH adjustment tank 3, a stirring device 4, an automatic partial collector 5, and a simulated soil column 6.

[0034] The specific implementation steps are as follows: the water inlet of the pH adjustment tank 3 is connected with the raw water tank 1 through the water pump 2, the water inlet of the stirring device 4 is connected with the water outlet of the pH adjustment tank 3 through the water pump 2, and the water inlet of the simulated soil column 6 is passed through a peristaltic pump Connect with the water outlet of the stirring device 4, inject the biochar particle suspension solution into the filling medium of the simulated soil column 6, and finally the water outlet of the simulated soil column 6 is connected with the automatic part collector 5 through a peristaltic pump, and ...

Embodiment 2

[0037] Using the device described in Example 1, an indoor test was carried out using 20-30 mesh quartz sand from Sinopharm Group, and a migration test was carried out for biochar particle solutions with the same particle concentration, different ionic strengths, and different pH values, wherein the biochar particle was 300 -400 mesh wheat straw biochar, the initial concentration of influent biochar particles is 0.4g / L, the ionic strength is 0, 1, 20mM, the pH value is 4, 6, 9, and the influent and effluent water is 0.5mL / min. Flow velocity, the simulated soil column is a saturated system with a porosity of 0.42.

[0038]The raw water in the raw water pool 1 is 0, 0.001, and 0.02 mol / L NaCl salt solution in sequence, and the salt solution is injected into the pH adjustment pool 3 at a constant speed by the peristaltic pump 2 for 35 minutes. Weigh a certain amount of biochar and add it to the pH adjustment tank (after mixing, control the initial absorbance of the biochar solutio...

Embodiment 3

[0039] Example 3: The raw water in the raw water pool is a salt solution of 1 mmol / L NaCl, and the solution is injected into the pH adjustment pool at a constant speed with a peristaltic pump 2, and the pH is adjusted to 4, 6, and 9 with a pH buffer solution. The experimental steps are the same as in Example 2. Experimental results such as figure 2 and image 3 shown.

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Abstract

The invention relates to a device for simulating motion transfer of charcoal in a soil system, which comprises an original pool, a water pump, a pH equalizing tank, a stirring device, a simulated soil column and an automatic part collector. The original pool comprises a solution injection bottle and a conduit; the pH equalizing tank comprises a pH electrode, a pH meter, charcoal particles; the stirring device comprises a magneton and the stirring device; valves are arranged at upper and lower ends of the simulated soil column, an air outlet is arranged at top, a silica gel pad is arranged in flange plates at upper and lower ends, the porous filter panels are respectively placed at upper and lower position of a filling medium; the automatic part collector comprises an outlet pipe, a timing rotating disk and a liquid outlet collection container; a water inlet of the pH equalizing tank is connected to the original pool, the water inlet of the stirring device is connected to the water outlet of the pH equalizing tank, the water inlet of the simulated soil column is connected to the water outlet of the stirring device, and the water outlet of the simulated soil column is connected to the automatic part collector. The device for simulating motion transfer of charcoal enables real-time acquisition of distribution condition of charcoal concentration on time and space as well as real-time change of output liquid volume, and has the characteristics of high automation degree, high accuracy, less volume of experiment apparatus, less interference factor and easily controlled condition.

Description

technical field [0001] The invention belongs to the technical field of environmental protection and relates to a simulation device for the movement and migration of biochar in a soil system. Background technique [0002] With the warming of the global climate, the control of greenhouse gases is imminent, and how to quickly and effectively fix carbon dioxide in the air is the main challenge facing the carbon sequestration strategy. The traditional carbon sequestration method mainly fixes carbon in biomass or soil organic matter by planting vegetation, but this technology is not long-term effective. After all, the absorption of carbon dioxide in the air by plants is limited. After many years, vegetation may It will reach carbon saturation and lose the ability to continue absorbing carbon dioxide. In addition, once the vegetation undergoes aerobic combustion, the carbon fixed in it will be released into the air. From the perspective of carbon cycle, the goal of carbon emission...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/00
Inventor 桑文静张亚雷王道京周雪飞沈峥
Owner TONGJI UNIV
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