Three-chamber soil microbial fuel cell and method for removing heavy metals

Abstract

The invention discloses a three-chamber soil microbial fuel cell for removing heavy metals. The three-chamber soil microbial fuel cell comprises a rectangular shell, an anode chamber formed by a proton exchange membrane and quantitative filter paper, a contaminated soil chamber and a cathode chamber, wherein the anode chamber is provided with a carbon felt, the cathode chamber is provided with a stainless steel wire mesh, the carbon felt and the stainless steel wire mesh are conducted through a titanium wire, the titanium wire is located outside the rectangular shell, and the titanium wire isprovided with a resistor. The invention also discloses a method for removing heavy metals, wherein the method comprises the following steps: 1, assembling the three-chamber soil microbial fuel cell, 2, adding to-be-experimented contaminated soil, adding a solution into the anode chamber and the cathode chamber, and configuring the titanium wire with the resistor, and 3, obtaining the soil withoutthe heavy metals. According to the invention, efficient reduction of heavy metals in a cathode can be realized, and more heavy metals in soil can migrate to the cathode, so that the removal rate of the heavy metals in the soil is improved, and the purpose of repairing the heavy metal contaminated soil is realized.

Description

technical field [0001] The invention belongs to the technical field of soil pollution treatment, and in particular relates to a three-chamber soil microbial fuel cell for removing heavy metals, and also relates to a method for removing heavy metals. Background technique [0002] With the increasingly serious problem of soil pollution, heavy metal pollution in soil has become a global research focus. In the first national soil pollution survey, it was found that heavy metal pollution accounted for 82.4% of farmland soil exceeding the standard. [0003] In order to effectively strengthen the prevention and control of soil pollution and gradually improve the quality of the soil environment, more and more countries are gradually formulating policies and documents to purify pollutants in the environment. Many physical, chemical, and biological techniques can be used to treat heavy metals in the ecosystem. However, most of these physical and chemical techniques are energy-intensiv...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a three-compartment soil microbial fuel cell for removing heavy metals, which solves the problem that the current soil microbial fuel cell cannot realize heavy metal migration and fully utilize the cathode reduction at the same time

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