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Method for treating sulfonamide wastewater and producing hydrogen synchronously by electrochemical device

A sulfonamide, electrochemical technology, applied in the direction of electrochemical biocombination treatment, chemical instruments and methods, biological water/sewage treatment, etc.

Active Publication Date: 2018-09-25
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of environmental friendliness and efficient treatment of sulfonamide antibiotic wastewater, and to provide a method for using an electrochemical device to treat sulfonamide wastewater and synchronously produce hydrogen

Method used

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  • Method for treating sulfonamide wastewater and producing hydrogen synchronously by electrochemical device

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Experimental program
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Embodiment 1

[0019] Step 1: Assemble three single-chamber MFCs, the size of which is a plexiglass column with a length of 4cm and a cross-sectional diameter of 3cm. The effective volume is 28ml. The anode is a circular carbon cloth with a diameter of 3cm, and the cathode is Pt / C of the same size Air cathode (painting method), the two poles are connected together with a copper wire in the external circuit and an external 1500Ω resistor is connected. Start 3 reactors in electricity production mode, mix the anaerobic wastewater from the aeration tank of the sewage treatment plant with the culture solution at a ratio of 1:1 and put it into the MFC, where the culture solution consists of: sodium salt 37.78g / L, monohydrogen phosphate Salt 15.47g / L, dihydrogen phosphate 5.84g / L, potassium salt 0.13g / L, ammonium salt 0.31g / L, chloride salt concentration 0.44g / L, acetate 1g / L, constant temperature at 30°C Run in the box, monitor the voltage changes at both ends in real time, replace the culture med...

Embodiment 2

[0024] The difference between this embodiment and Example 1 is that glucose is used instead of sodium acetate to provide nutrients for the start-up stage of microorganisms, and other steps and parameters are the same as in Example 1.

[0025] The result of the present invention is that after 48 hours, the degradation rate of sulfamethoxazole reaches about 80%, and the hydrogen production also reaches 301.1±4 μmol.

Embodiment 3

[0027] The difference between this embodiment and Example 1 is that the Pt / C air cathode is produced by rolling method, and other steps and parameters are the same as those of Example 1.

[0028] The result of the present invention is that after 48 hours, the degradation rate of sulfamethoxazole reaches more than 85%, and the hydrogen production also reaches 320.5±4 μmol.

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Abstract

The invention provides a method for treating sulfonamide wastewater and producing hydrogen synchronously by an electrochemical device, and relates to the fields of environment, antibiotic, energy andelectrochemistry, in particular to initiation, transformation and domestication process of MFC and MEC and MEC treatment of sulfamethoxazole. The method utilizes MEC for treating sulfamethoxazole andproducing hydrogen synchronously, and comprises the following steps: first, making MFC anode and cathode and adding a culture solution to complete MFC startup; second, sealing the MFC cathode with a plexiglass cover to complete conversion of MFC to MEC; and third, adding sulfamethoxazole to MEC for domestication, adding sodium bromoethane sulfonate as a methanogenesis inhibitor, and calculating the degradation rate of sulfamethoxazole and the hydrogen production efficiency of MEC. The treatment process is simple, the conditions are mild, no other pollutants are generated, and the method is environmentally friendly and has good application potential.

Description

technical field [0001] The invention relates to the fields of environment, antibiotics, energy and electrochemistry. Specifically, it is a method for treating sulfonamide wastewater and synchronously producing hydrogen by utilizing a microbial electrolytic cell. Background technique [0002] Since 1970, the presence of antibiotics has been detected in the environment one after another, which has aroused great concern of researchers. As a country with huge production and usage of antibiotics, China has an annual consumption of 210 thousand tons and a per capita consumption of antibiotics of 138 g. Sulfonamide antibiotics are widely used in clinical, animal husbandry and aquatic industries because of their broad-spectrum antibacterial properties, low toxicity and side effects, and low price. Take sulfamethoxazole as an example: its concentration in surface water and groundwater has been detected to be 0.32-0.4μg / L and 0.01-1.5μg / L, and the frequency of detection is 73%. Als...

Claims

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Application Information

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IPC IPC(8): C02F3/00C12P3/00C02F101/34C02F101/38
CPCC02F3/005C02F2101/34C02F2101/38C02F2101/40C12P3/00
Inventor 周启星赵倩楠李凤祥
Owner NANKAI UNIV
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