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Preparation method of treating heavy metal copper ions by microbial fuel cell

A fuel cell and microbial technology, which is applied in the field of microbial fuel cell processing copper ions containing heavy metals, can solve the problems of high cost and limited application, and achieve the effect of simple system, good electrochemical performance and high precipitation efficiency

Inactive Publication Date: 2017-11-24
NANCHANG HANGKONG UNIVERSITY
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AI Technical Summary

Problems solved by technology

[0004] Most of the currently researched microbial fuel cells use platinum carbon as a catalyst to treat heavy metals, but there are problems such as high cost, which limits its practical application.

Method used

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  • Preparation method of treating heavy metal copper ions by microbial fuel cell
  • Preparation method of treating heavy metal copper ions by microbial fuel cell
  • Preparation method of treating heavy metal copper ions by microbial fuel cell

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Embodiment example

[0026] A preparation method for microbial fuel cell treatment of copper ions containing heavy metals; it is characterized in that the specific steps are as follows:

[0027] (1) The microbial fuel cell adopts a double-chamber structure with a device capacity of 120ml, and the two chambers are separated by a proton exchange membrane.

[0028] (2) Anode microorganisms are domesticated sludge microorganisms in sewage treatment plants.

[0029] (3) The 120ml catholyte uses potassium ferricyanide as the electron acceptor, and the concentration of K3Fe(CN)6 and buffer solution is both 0.1M / L.

[0030] (4) Screen the microbial flora by changing the resistance value of the external circuit (from large to small). The resistance value can be changed to 10000Ω, 5000Ω, 2000Ω, 800Ω, 200Ω, and 20Ω in sequence. As the resistance value of the external circuit decreases, The current value is gradually increased, so as to achieve the purpose of screening microbial flora; and the data acquisiti...

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Abstract

The invention discloses a preparation method of treating heavy metal copper ions by a microbial fuel cell. A cathode of the microbial fuel cell is made from a carbon nano tube; the metal ions perform a reduction reaction; and a simple substance, copper, is separated out on the cathode. The method comprises the following steps of weighing a certain amount of the carbon nano tube, coating the cathode of the microbial fuel cell with the carbon nano tube, and allowing the simple substance copper to be separated out after the microbial fuel cell operates for a period of time. According to the novel copper preparation method by the microbial fuel cell, the carbon nano tube is used for reducing reduction activation voltage; the copper ions perform the reduction reaction; at the same time, power can be generated; organic pollutants can be treated; a system is simple; and a reduction rate of the copper is high.

Description

technical field [0001] The invention belongs to the field of microbial fuel cells, and relates to a preparation method of microbial fuel cells for treating copper ions containing heavy metals. Background technique [0002] Microbial fuel cell (MFC) is a device that uses microorganisms as the main body of the reaction to directly convert the chemical energy of organic substances into electrical energy. It has broad prospects in the utilization of wastewater resources. As an important place for electrochemical reaction and electron transport, cathode material is an important part of energy storage and conversion devices, and plays a vital role in the performance of electrochemical energy. Therefore, cathode materials play an important role in improving the performance of microbial fuel cells. [0003] Metal ions are used as the cathode electron acceptor of MFC, and the current generated by MFC is used to replace the traditional power supply in the electrolytic treatment of me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/00H01M8/16C02F101/20
CPCC02F3/005C02F2101/20C02F2201/461H01M8/16Y02E60/50
Inventor 张凯旋刘琪凯次素琴王玉生陈思付倩卢恋月苏晓明
Owner NANCHANG HANGKONG UNIVERSITY
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