Device for soil heavy metal adsorption /desorption kinetic procedure research

A heavy metal and kinetic technology, applied in measurement devices, scientific instruments, instruments, etc., can solve the problems of heavy metal re-adsorption, difficult to reflect the actual process of soil, and large gaps in reaction conditions, and achieves easy operation, flexible sampling methods, and guaranteed The effect of consistency

Inactive Publication Date: 2008-09-10
SHENYANG INST OF APPL ECOLOGY CHINESE ACAD OF SCI
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Problems solved by technology

However, there is a large gap between the experimental conditions used in this method and the reaction conditions in the soil, and because the desorbed heavy metals still coexist in the desorption equilibrium solution, the phenomenon of heavy metal resorption is likely to occur, and the results cannot reflect the soil under natural conditions. the actual process in

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  • Device for soil heavy metal adsorption /desorption kinetic procedure research
  • Device for soil heavy metal adsorption /desorption kinetic procedure research

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Embodiment Construction

[0020] See figure 1 Shown is an experimental device for the study of soil heavy metal adsorption / desorption kinetics. The experimental device is composed of five parts: sample liquid storage 1, multi-channel peristaltic pump 2 (with hoses at the two ends of the inlet and outlet), exchange column 3, connecting hose 4 and effluent automatic adapter 5, and the sample liquid is stored The device 1, the multi-channel peristaltic pump 2, the exchange column 3 and the effluent automatic receiver 5 are connected in series through a connecting hose 4. Put the adsorption solution or desorption solution into the injection solution reservoir 1, and immerse one end of the hose fixed at the channel of the multi-channel peristaltic pump 2 under the liquid surface of the injection solution reservoir 1, and the other end is connected to the exchange column 3. The other end of the exchange column 3 is led out by the connecting rubber tube 4 and connected to the effluent automatic receiver 5. The s...

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Abstract

The invention relates to a research on soil heavy metal absorption / desorption action, in particular to a device used for researching the soil heavy metal absorption / desorption dynamic process, which is sequentially formed by a sampling liquid storage container, a multi-channel peristaltic pump, an exchange column and an effluent automatic adaptor which are connected in series by pipelines. The research can avoid the phenomenon of heavy metal re-absorption and make better simulation on natural conditions so as to research the soil heavy metal absorption / desorption dynamic process.

Description

Technical field [0001] The invention relates to the study of soil heavy metal adsorption / desorption behavior, in particular to an experimental device for the study of soil heavy metal adsorption / desorption kinetics. Background technique [0002] With the rapid development of industrial and agricultural production, the problem of heavy metal pollution in the soil caused by the unreasonable use of chemical fertilizers and pesticides, the discharge of three wastes, and mining activities have become very prominent. At present, the treatment and restoration of heavy metal contaminated soil has become a hot issue at home and abroad. Heavy metals (such as cadmium, lead, copper, zinc, arsenic, etc.) enter the soil through adsorption / desorption, precipitation (co-precipitation) / dissolution, surface complexation / dissociation, ion exchange, and solid diffusion. Desorbed from the soil, the degree of adsorption / desorption is related to whether heavy metals are adsorbed by the soil and the deg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/00
Inventor 陈苏孙丽娜晁雷孙铁珩
Owner SHENYANG INST OF APPL ECOLOGY CHINESE ACAD OF SCI
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