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A serial continuous flow microbial fuel cell system and its preparation method and its application in degrading nitrobenzene wastewater

A technology for fuel cell systems and nitrobenzene wastewater, applied in biochemical fuel cells, biological water/sewage treatment, battery electrodes, etc., can solve problems such as difficult biochemical degradation, difficult solvent regeneration, long treatment cycle, etc., to improve mass transfer The effect of promoting electron transfer rate and optimizing system performance

Active Publication Date: 2022-07-08
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to its high toxicity, great harm to the ecological environment and very stable chemical properties, it is difficult to biochemically degrade, and its effective removal from wastewater has always been a research topic. At present, the methods commonly used to degrade nitrobenzene (NB) generally include physical methods. , chemical method, biological method and combined treatment method, etc., but these methods have their own shortcomings and problems. For example, the solvent regeneration in the physical method is difficult and the treatment cycle is long, and even secondary pollution will occur. The chemical method has high costs and degradation. Defects such as incomplete nitrobenzene

Method used

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  • A serial continuous flow microbial fuel cell system and its preparation method and its application in degrading nitrobenzene wastewater
  • A serial continuous flow microbial fuel cell system and its preparation method and its application in degrading nitrobenzene wastewater
  • A serial continuous flow microbial fuel cell system and its preparation method and its application in degrading nitrobenzene wastewater

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Example 1: A serial continuous flow microbial fuel cell system, consisting of two dual-chamber microbial fuel cells MFC11 and MFC2 2, the anodes of MFC1 1 and MFC2 2 are left standing respectively, and the cathodes are connected in series; the anode chambers of MFC1 and MFC2 are connected to The cathode compartments are separated by ion exchange membrane 3, and the electrodes in the anode compartment and cathode compartment of MFC1 and MFC2 are Fe@Fe 2 O 3 / PANI / PEG modified carbon felt; a saturated calomel electrode is set in the cathode chamber as a reference electrode; the anode and cathode are connected to a 1000Ω external resistor 5 through a copper wire to form a complete circuit loop, and a voltage collector is connected in parallel with the external resistor.

[0034] The two dual-chamber microbial fuel cells MFC1 and MFC2 have the same structure. The anodes of the two MFCs are guaranteed to stand still, and the cathodes are connected in series. Each MFC consist...

Embodiment 2

[0046] Example 2: Utilize the serial continuous flow microbial fuel cell system prepared in Example 1 to degrade nitrobenzene wastewater, the specific method is as follows: after pretreatment, film hanging, and start-up of the serial continuous flow microbial fuel cell system, the nitrobenzene wastewater Entering the system: the nitrobenzene wastewater enters the water from the cathode water inlet I of MFC1, the upper effluent of the cathode of MFC1 is used as the lower inlet of the cathode of MFC2, and the effluent from the upper part of the cathode of MFC2 flows into the water inlet pool, and circulates for 24h according to this operation. After 24h of circulating treatment, a new batch of negative and positive culture medium was replaced. The anode water inlet and outlet are sealed and left to stand, and can be opened for sampling when sampling is required.

[0047] Among them, the pretreatment is to sterilize the reactors, instruments and other equipment; the film hanging ...

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Abstract

The invention belongs to the technical field of environmental protection water treatment and biological fuel cells, and provides a serial continuous flow microbial fuel cell system and preparation thereof in order to improve the limitation of nitrobenzene degradation rate of a single microbial fuel cell and improve the salinity of organic matter and power generation. The method and its application in degrading nitrobenzene wastewater are composed of two double-chamber microbial fuel cells MFC1 and MFC2. The anodes of MFC1 and MFC2 are left standing separately, and the cathodes are connected in series; the anode chamber and the cathode chamber are separated by an ion exchange membrane. On, the electrodes in the anode compartment and cathode compartment of MFC1 and MFC2 are Fe@Fe 2 O 3 / PANI / PEG modified carbon felt; a saturated calomel electrode is set in the cathode chamber as a reference electrode; the anode and cathode are connected to an external resistance of 1000Ω through copper wires to form a complete circuit loop, and a voltage collector is connected in parallel with the external resistance. The electron transfer and the mass transfer and throughput of the system are improved, and the performance and efficiency are improved.

Description

technical field [0001] The invention belongs to the technical field of environmental protection water treatment and biological fuel cells, and in particular relates to a serial continuous flow microbial fuel cell system, a preparation method thereof, and an application in degrading nitrobenzene wastewater. The microbial fuel cell cathode-cathode serial continuous flow mode Degradation of nitrobenzene and electricity generation, using the first prepared modified battery Fe@Fe 2 O 3 / PANI / PEG / CF and biocathode improve nitrobenzene removal rate and electricity production. Background technique [0002] As a common toxic pollutant discharged by chemical enterprises, nitrobenzene is an important chemical raw material, and is mostly used as a raw material for explosives, pesticides and rubber vulcanization accelerators. Due to its high toxicity, great harm to the ecological environment and very stable chemical properties, it is difficult to biochemically degrade, and its effectiv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/16H01M4/96C02F3/34C02F3/00C02F101/38
CPCH01M8/16H01M4/96C02F3/34C02F3/005C02F2101/38C02F2203/006C02F2301/08C02F2209/08C02F2209/14Y02E60/50
Inventor 刘玉香张松涛刘征马思嘉庞绍婕任瑞鹏李亚青袁进吕永康
Owner TAIYUAN UNIV OF TECH
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