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Application of an induced polyaniline-loaded graphene-modified electrode reactor and method for removing polycyclic aromatic hydrocarbons

A technology of polycyclic aromatic hydrocarbons and modified electrodes, which is applied in chemical instruments and methods, electrochemical biocombination treatment, bacteria, etc., can solve the problems of poor enrichment effect of electroactive microorganisms and low electron transfer efficiency, and achieve shortened start-up time, The effect of promoting film formation and enhancing electron transfer

Active Publication Date: 2022-06-24
NANKAI UNIV
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of low electron transfer efficiency and poor enrichment effect of electroactive microorganisms and degradative microorganisms on electrodes in the existing microbial electrochemical technology, and provide a method for using modified electrodes to realize rapid enrichment of microorganisms And the efficient transfer of electrons, and then realize the efficient and rapid degradation of polycyclic aromatic hydrocarbon naphthalene in water

Method used

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  • Application of an induced polyaniline-loaded graphene-modified electrode reactor and method for removing polycyclic aromatic hydrocarbons
  • Application of an induced polyaniline-loaded graphene-modified electrode reactor and method for removing polycyclic aromatic hydrocarbons
  • Application of an induced polyaniline-loaded graphene-modified electrode reactor and method for removing polycyclic aromatic hydrocarbons

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Embodiment 1

[0021] Set up the experimental group PG+ME for the degradation of PAH naphthalene in water using a microbial electrochemical system using polyaniline and graphene-modified electrodes

[0022] 1) Modification of graphite rod electrodes

[0023] The electrochemical reactor is a three-electrode system with a diameter of 5 cm and a height of 5 cm, including a graphite rod working electrode, a platinum sheet counter electrode and an Ag / AgCl reference electrode. 100 mL of distilled water, 0.8% concentrated sulfuric acid, and 4.0 mL of aniline solution were added to the reactor. , 1500rpm / min high-speed stirring for 10min to make aniline evenly dispersed in the solution. The aniline is uniformly dispersed in the solution. The electrochemical workstation was used to apply a potential of 0.8V for 100s, and then 0.03g of graphene was added for cyclic voltammetry scanning. The scanning speed was 0.05V / s, and the scanning potential range was -0.3–1.2V. Finally, the modified electrode was...

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Abstract

The invention discloses an application of an induced polyaniline-loaded graphene-modified electrode reactor and a method for removing polycyclic aromatic hydrocarbons, and improves the removal effect of polycyclic aromatic hydrocarbon naphthalene in petroleum wastewater by modifying polyaniline on the anode of a microbial electrochemical system and loading graphene , first apply a certain potential in the three-electrode system to make aniline nucleate on the blank graphite rod, then add graphene to scan the blank graphite rod by cyclic voltammetry to obtain a modified electrode, and use the modified electrode to perform in the electrochemical reactor For the cultivation of electroactive degrading microbial membranes, 1 g / L sodium acetate was used as a carbon source to cultivate mature electroactive degrading microbial membranes to treat the solution containing naphthalene. The invention has the advantage that the modified electrode realizes rapid enrichment of degradative microorganisms, thereby realizing efficient removal of polycyclic aromatic hydrocarbons, and provides a new method for the application of microbial electrochemical technology in the field of water pollution treatment.

Description

technical field [0001] The invention belongs to the field of microbial electrochemical technology water treatment, and particularly relates to an application of an induced polyaniline-loaded graphene modified electrode reactor and a method for removing polycyclic aromatic hydrocarbons. Background technique [0002] With the massive exploitation and use of coal and petroleum in industrial production, transportation and daily life, the produced polycyclic aromatic hydrocarbons (PAHs) have become organic pollutants that have received extensive attention. Polycyclic aromatic hydrocarbons refer to organic compounds containing two or more benzene ring structures, including more than 150 kinds of substances such as naphthalene, anthracene, phenanthrene, pyrene, etc., mainly from coal and oil combustion, waste incineration and motor vehicle exhaust emissions. PAHs are a class of organic pollutants with "three causes" effects. Their high stability, strong hydrophobicity and refractor...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12N1/20C02F3/00C02F101/32
CPCC02F3/005C02F2101/327
Inventor 周启星李田李瑞祥张晓林王鑫
Owner NANKAI UNIV
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