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A device and method for efficiently degrading bisphenol A by light-coupled electroactive biofilm

An active biofilm, coupled electricity technology, used in chemical instruments and methods, sustainable biological treatment, biological water/sewage treatment, etc., to achieve high efficiency, simple operation, and accelerated degradation efficiency.

Active Publication Date: 2022-03-22
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved in the present invention is to overcome the defects and deficiencies of the existing bioelectrochemical system for degrading bisphenol A, and to provide a device and method for efficiently degrading bisphenol A with light coupled electroactive biofilm

Method used

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  • A device and method for efficiently degrading bisphenol A by light-coupled electroactive biofilm
  • A device and method for efficiently degrading bisphenol A by light-coupled electroactive biofilm
  • A device and method for efficiently degrading bisphenol A by light-coupled electroactive biofilm

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Experimental program
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Effect test

Embodiment 1

[0036] The domestication of embodiment 1 electroactive biofilm

[0037] Before domesticating the electrochemical biofilm, it is necessary to configure the growth medium to grow the electrochemical biofilm on the graphite electrode.

[0038] Growth medium: disodium hydrogen phosphate (Na 2 HPO 4 12H 2 O) 11.4g, sodium dihydrogen phosphate (NaH 2 PO 4 2H 2 O) 2.78g, potassium chloride (KCl) 0.13g, ammonium chloride (NH 4 Cl) 0.31g, sodium acetate (CH 3 COONa) 1g, vitamin mixed nutrient solution 10ml, mineral solution 10ml, dissolved in dd H 2 O and set the volume to 1L.

[0039] Among them, the formula of vitamin mixed nutrient solution is shown in Table 1, and all substances in the formula are dissolved in dd H 2 Dilute to 1L after O and store at 4°C.

[0040] Table 1 vitamin mixed nutrient solution

[0041]

[0042]

[0043] The formula of the mineral solution is shown in Table 2. All the substances were dissolved in water and the volume was adjusted to 1 L, a...

Embodiment 2

[0047] Example 2 Construction of a device for degrading bisphenol A by light coupling electroactive biofilm

[0048] The device for degrading bisphenol A by light coupling electroactive biofilm of the present invention is as follows: figure 1 As shown, it includes a reactor 12 , an electrochemical workstation 1 and a xenon lamp 9 . The reactor 12 is a barrel-shaped structure with an upper opening, equipped with a transparent glass cover 10 that is detachably connected to the upper opening, and a rubber ring 11 is provided under the transparent glass cover 10, and a top groove 8 is provided on the top of the reactor. The transparent glass cover 10 is pressed with a glass clamp, and the rubber ring 11 is pressed into the top groove 8 to ensure the sealing effect of the reactor. The reactor 12 is provided with the graphite plate anode 14 of the domesticated electroactive biofilm, the titanium wire cathode 5 and the Ag / AgCl reference electrode 6, and the electrode of the electroc...

Embodiment 3

[0050] The treatment of embodiment 3 bisphenol A waste water

[0051] After the light-coupled electroactive biofilm degradation device for bisphenol A is correctly connected, pour 100mL of wastewater with a bisphenol A concentration of 1mg / L, completely seal it, and then aerate it for 5 minutes to make the reactor in an anaerobic state. The rotating speed of the constant temperature magnetic stirrer was set to 100rpm, and the xenon lamp illuminator above the reactor was turned on. The water inlet of the outer ring of the reactor is connected to the faucet, and the water outlet is placed on the edge of the pool. Turn on the faucet to ensure that the flowing water passes through the outer ring of the reactor evenly, so as to ensure that the reactor will not be affected by the increase in temperature due to light. Turn on the electrochemical workstation to start the treatment of bisphenol A wastewater.

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Abstract

The invention discloses a device and a method for efficiently degrading bisphenol A by light coupling electroactive biofilm. Compared with the single bioelectrochemical degradation method, this method couples the electrochemical biological system with light, which not only accelerates the degradation efficiency of bisphenol A, but also has low energy consumption. The degrading efficiency of bisphenol A by light-coupled electroactive biofilm in the present invention can be as high as 97.8%, which is nearly 50% higher than that of a single electroactive biofilm within the same time period. The method has the advantages of simple operation, low cost, high efficiency of degrading bisphenol A, and practical application value.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment. More specifically, it relates to a device and method for efficiently degrading bisphenol A by light-coupled electroactive biofilm. Background technique [0002] With the continuous improvement of the level of science and technology and the continuous strengthening of environmental protection awareness, the technical means of dealing with refractory organic pollutants are increasing day by day, and the effect is becoming more and more ideal. At present, the commonly used organic pollutant treatment methods mainly include physical methods, chemical methods and biological methods. With the development of scientific research, these technical methods gradually mature and are used in combination with each other, and bioelectrochemical systems are thus produced. [0003] A bioelectrochemical system is a system in which microorganisms, reaction substrates, and electrodes interact. Microorgani...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F1/48C02F1/30C02F3/12C02F3/28C02F101/34
CPCC02F9/00C02F1/48C02F1/30C02F3/28C02F2101/34C02F3/12Y02W10/10
Inventor 袁勇甘霖蔡茜茜廖知玚
Owner GUANGDONG UNIV OF TECH
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