CN112551681B - Single-chamber type microbial electro-Fenton system and application thereof - Google Patents

Single-chamber type microbial electro-Fenton system and application thereof Download PDF

Info

Publication number
CN112551681B
CN112551681B CN202011431652.2A CN202011431652A CN112551681B CN 112551681 B CN112551681 B CN 112551681B CN 202011431652 A CN202011431652 A CN 202011431652A CN 112551681 B CN112551681 B CN 112551681B
Authority
CN
China
Prior art keywords
anode
cathode
mixed bacteria
fenton system
electro
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202011431652.2A
Other languages
Chinese (zh)
Other versions
CN112551681A (en
Inventor
石建强
张桂臣
张少君
王明雨
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Maritime University
Original Assignee
Shanghai Maritime University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai Maritime University filed Critical Shanghai Maritime University
Priority to CN202011431652.2A priority Critical patent/CN112551681B/en
Publication of CN112551681A publication Critical patent/CN112551681A/en
Application granted granted Critical
Publication of CN112551681B publication Critical patent/CN112551681B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/005—Combined electrochemical biological processes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/008—Originating from marine vessels, ships and boats, e.g. bilge water or ballast water
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2305/00—Use of specific compounds during water treatment
    • C02F2305/02—Specific form of oxidant
    • C02F2305/026—Fenton's reagent
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells

Abstract

The invention discloses a single-chamber microbial electro-Fenton system and application thereof, wherein the single-chamber microbial electro-Fenton system comprises: an anode, a cathode, an electrolyte; the anode and the cathode are arranged in the same single chamber; the anode includes: the anode base material is formed by rolling a plurality of layers of carbon cloth and a plastic net, and the plastic net is arranged between the carbon cloth and used for separating the carbon cloth; mixed bacteria are loaded on the anode base material; the mixed bacteria comprise rhodopseudomonas palustris, proteus vulgaris, bacillus toyonensis and alcanivorax pacificus; the cathode includes: the support is made of a titanium mesh, and activated carbon powder loaded with graphene and cobalt is filled in the support; the electrolyte comprises sewage to be treated and added nutrient substances; and the mixed bacteria decompose the organic matters in the sewage to be treated to generate electrons for the cathode to utilize. The mixed bacteria loaded on the anode of the invention degrade organic pollutants to generate high current density, can meet the energy consumption required by the cathodic electro-Fenton reaction, and does not need to consume extra electric energy.

Description

Single-chamber type microbial electro-Fenton system and application thereof
Technical Field
The invention relates to the technical field of ship oily water treatment, in particular to a single-chamber microbial electro-Fenton system and application thereof.
Background
The ship bilge water is relatively common wastewater generated in the operation process of ship cabin equipment, and in the interior of a ship cabin provided with various power devices and pipeline systems, oil phase leakage can occur due to the reasons of ship vibration, equipment aging, pipeline corrosion and hole penetration, improper maintenance and management and the like, and the oil phase leakage is mixed with various leakage water accumulated in the cabin, so that a large amount of oily water containing different petroleum oil products such as crude oil, diesel oil, heavy oil, lubricating oil and the like is generated. The bilge water contains a large amount of Total Organic Carbon (TOC), nutritive salt and reducing substances, the oil-water separation equipment currently used on ships can only reduce the content of oil pollutants in the bilge water, the root problems of high nutritive salt and Chemical Oxygen Demand (COD) cannot be properly solved, and the long-term discharge inevitably brings great threat to the marine ecological environment.
The electricity-generating degradation bacteria loaded in the anode of the Microbial Fuel Cell (MFC) can oxidize and decompose small molecular organic matters, release protons and electrons and simultaneously have the function of purifying sewage, but the actual application is always limited due to the reduction of the electric energy generated by the electricity-generating degradation bacteria. The heterogeneous electro-Fenton technology (EF) can generate hydrogen peroxide in situ at a cathode, and then hydroxyl radicals with high oxidizability are generated through catalysis to degrade organic pollutants in sewage, so that the defects of danger of hydrogen peroxide transportation and storage, narrow pH application range and high catalyst consumption in the homogeneous Fenton technology are overcome, and meanwhile, an EF reaction system needs to consume extra electric energy.
Disclosure of Invention
The invention aims to provide a single-chamber type microbial electro-Fenton system without consuming additional electric energy and application thereof.
In order to achieve the above objects, the present invention provides a single-chamber type microbial electro-fenton system comprising: an anode, a cathode, an electrolyte; the anode and the cathode are arranged in the same single chamber; the anode includes: the anode base material is formed by rolling a plurality of layers of carbon cloth and a plastic net, and the plastic net is arranged between the carbon cloth and used for separating the carbon cloth; mixed bacteria are loaded on the anode base material; the mixed bacteria consist of rhodopseudomonas palustris, proteus vulgaris, bacillus toyonensis and alcanivorax pacificus; the cathode includes: the support is made of a titanium mesh, and activated carbon powder loaded with graphene and cobalt is filled in the support; the electrolyte includes: sewage to be treated and added nutrient substances; and the mixed bacteria decompose the organic matters in the sewage to be treated to generate electrons for the cathode to utilize.
Optionally, the preparation method of the anode comprises:
step 1, rolling a plurality of layers of carbon cloth after heat treatment, and separating the carbon cloth by a plastic net to obtain an anode base material;
step 2, inoculating rhodopseudomonas palustris, proteus vulgaris, bacillus toyonensis and alcanivorax pacificus into a culture solution to obtain a bacterial suspension containing the mixed bacteria;
step 3, placing the anode substrate into a bacterial suspension containing the mixed bacteria, and enabling the mixed bacteria to attach and grow on the carbon cloth to obtain the anode substrate attached with the mixed bacteria;
step 4, carrying out heat treatment on the agar to melt the agar; and placing the anode substrate attached with the mixed bacteria into melted agar, and coating the solidified agar on the surfaces of the carbon cloth and the plastic net so as to fix the mixed bacteria on the anode substrate to obtain the anode.
Optionally, the inoculum size of rhodopseudomonas palustris, proteus vulgaris, bacillus toyonensis, and methanotrophic pacificus in step 2 is 4.
Optionally, the preparation method of the cathode comprises:
step 1, dispersing graphene and activated carbon powder in a mixed solution of water and ethanol, then carrying out hydrothermal treatment in a hydrothermal kettle, and drying to obtain a graphene/activated carbon composite material;
step 2, dispersing the graphene/activated carbon composite material and cobalt nitrate in a mixed solution of isopropanol and acetic acid, and drying to obtain the activated carbon powder loaded with graphene and cobalt;
and 3, wrapping the graphene and cobalt loaded activated carbon powder with a titanium mesh to obtain the cathode.
Optionally, the electrolyte further includes: an inorganic salt for maintaining the pH balance of the electrolyte.
Optionally, a resistor is externally connected between the anode and the cathode.
Optionally, the resistor is a variable resistor.
Optionally, the sewage to be treated is ship bilge water.
Optionally, the single-chamber microbial electro-fenton system is used for degrading organic matters in the bilge water of the ship.
Compared with the prior art, the invention has the beneficial effects that:
(1) The mixed bacteria loaded on the anode of the invention has high current density generated by degrading organic pollutants, can meet the energy consumption required by cathode electro-Fenton reaction, and does not need to consume extra electric energy.
(2) The single-chamber microbial electro-Fenton system constructed by the invention integrates the anode and the cathode in a single chamber, and a diaphragm is not required to be arranged in the single-chamber integrated structure, so that the internal resistance of the system is reduced, and the problem that the existence of anode microbes is influenced due to the fact that the pH value of an anode chamber is reduced after accumulation because the proton transmission speed is low is effectively solved.
(3) The single-chamber microbial electro-Fenton system constructed by the invention belongs to a clean process, and is green, environment-friendly and simple in structure.
Drawings
FIG. 1 is a schematic diagram showing the operation of the single-chamber microbial electro-Fenton system of the present invention.
FIG. 2 is a view showing the construction of an anode of the single-chamber type microbial electro-Fenton system according to the present invention.
FIG. 3 is a comparison graph of the maximum output voltage of the four strains of the anode of the present invention under different combinations.
FIG. 4 is a graph showing the output voltage with time when the mixed anode bacteria of the present invention are in the optimum inoculation ratio.
FIG. 5 is a schematic view showing a process for treating bilge water in the single-chamber microbial electro-Fenton system according to the present invention.
FIG. 6 is a TOC gas chromatogram before and after bilge water treatment according to the present invention.
FIG. 7 shows the COD degradation rate during the bilge water treatment process of the present invention.
Detailed Description
The technical solution of the present invention is further described below with reference to the accompanying drawings and examples.
As shown in fig. 1, the present invention provides a single-chamber type microbial electro-fenton system comprising: an anode, a cathode, an electrolyte; the anode and the cathode are arranged in the same single chamber.
The anode includes: the anode base material is formed by rolling a plurality of layers of carbon cloth and a plastic net, and the plastic net is arranged between the carbon cloth and used for separating the carbon cloth; mixed bacteria are loaded on the anode base material; the mixed bacteria comprise rhodopseudomonas palustris, proteus vulgaris, bacillus toyonensis and alcanivorax pacificus. The cathode includes: the support is made of a titanium mesh, and activated carbon powder loaded with graphene and cobalt is filled in the support. The electrolyte includes: sewage to be treated and added nutrient substances; and the mixed bacteria decompose the organic matters in the sewage to be treated to generate electrons for the cathode to utilize.
FIG. 2 is a view showing the construction of an anode of the single-chamber type microbial electro-Fenton system according to the present invention. As shown in figure 2, the anode of the invention takes more than two layers of carbon cloth as a base material, and the carbon cloth layers are separated by a plastic net, so that the inoculation area of mixed bacteria is increased.
The mixed bacteria of the invention are purchased from Beijing Baiohbowei biotechnology limited, and the GenBank numbers of the mixed bacteria are respectively as follows: rhodopseudomonas palustris: NR112912.1, proteus vulgaris (Proteus vulgaris): KC456524.1, bacillus toyonensis: NR12176.1, alcanivorax pacificus (Alcanivorax pacificus): CP004387.1.
The 4 strains are subjected to mixed flora construction, ship bilge water is used as a degradation matrix, the maximum output voltage of the 4 strains under different combination conditions is continuously measured, and the optimal combination of the 4 strains is screened out. The inoculation parts are as follows:
combination A: a inoculation of 12 parts
Combination B: inoculation of 12 portions of B
And (3) combination C: c inoculation of 12 portions
Combination D: d inoculation of 12 portions
And combining AB: 6 portions of A inoculation and 6 portions of B inoculation
Combination of AC: 6 portions of A inoculation and 6 portions of C inoculation
Combination AD: 6 portions of A inoculation and 6 portions of D inoculation
Combination BC: 6 portions of B inoculation and 6 portions of C inoculation
And combining BD: 6 portions of B inoculation and 6 portions of D inoculation
Combination of CD: 6 portions of C inoculation and 6 portions of D inoculation
Combination ABC: 4 parts of A inoculation, 4 parts of B inoculation and 4 parts of C inoculation
Combining ABD: 4 parts of A inoculation, 4 parts of B inoculation and 4 parts of D inoculation
Combining the ACD: 4 parts of A inoculation, 4 parts of C inoculation and 4 parts of D inoculation
Combining BCD: 4 parts of inoculation B, 4 parts of inoculation C and 4 parts of inoculation D
Combination ABCD: 3 parts of A inoculation, 3 parts of B inoculation, 3 parts of C inoculation and 3 parts of D inoculation
FIG. 3 is a graph comparing the maximum output voltage of the anode of the present invention under different combinations of four strains. In the figure, A is rhodopseudomonas palustris, B is proteus vulgaris, C is Bacillus toyonensis, and D is methanotrophic bacterium pacificum. As can be seen from FIG. 3, the maximum output voltage of the mixed population ABCD was higher than that of the other combinations, and thus it was used in the single-chamber microbial electro-Fenton system. The invention further optimizes the inoculation ratio of the four strains of ABCD, and the ratio of the optimal inoculation amount is 4. The inoculation amount is the bacterial number of four strains of ABCD when the strains are inoculated.
FIG. 4 is a graph showing the output voltage with time when the mixed anode bacteria of the present invention are in the optimum inoculation ratio. As shown in fig. 4, when the external resistance is 10 Ω during a cycle, the maximum output voltage of the anode reaches 255mV, which can satisfy the current intensity required by the cathodic electro-fenton reaction, and the system does not need to consume extra electric energy.
The cathode of the invention takes a titanium mesh as a bracket, and the inside of the titanium mesh is filled with activated carbon powder loaded with graphene and cobalt. Introducing O near the cathode 2 Then, O 2 Get electrons and H + Reduction to H 2 O 2 ，H 2 O 2 Generating OH after being catalyzed by cobalt ions and active carbon, and degrading organic matters in the bilge water. The reactions occurring at the anode and cathode at temperatures ranging from 10 to 50 ℃ and at a pH ranging from 1 to 10 are as follows:
and (3) anode reaction: c x H y O z +(2x-z)H 2 O→xCO 2 +(4x+y-2z)H + +(4x+y-2z)e -
And (3) cathode reaction:
O 2 +2H + +2e - →H 2 O 2
AC+H 2 O 2 →AC + +OH - +-OH
AC + +H 2 O 2 →AC+H + +HO 2-
C o 2+ +H 2 O 2 →C o 3+ +-OH+OH -
C o 3+ +H 2 O 2 +OH - →C o 2+ +O 2- - +H 2 O
C o 3+ +O 2- - →C o 2+ +O 2
example 1: preparation of Single-Chamber type microbial electro-Fenton System
(1) Preparing an anode:
a. preparation of an anode substrate: the surface density is 125g/m 2 The carbon cloth with the thickness of 360 mu m and the specification size of 4cm multiplied by 3cm is rolled into a cylinder after being treated for 30 minutes at the high temperature of 430 ℃ in a muffle furnace; the plastic net with the thickness of 0.1mm and the specification size of 1mm multiplied by 3mm is used as a separation film between the carbon cloth layers to ensure the attachment and growth of mixed bacteria between the carbon cloth layers. And soaking the rolled carbon cloth in acetone for 24 hours to remove oily substances, thereby obtaining the anode base material.
b. Culturing mixed bacteria: the OD was inoculated at a ratio of 4:1: 3 600 Rhodopseudomonas palustris, proteus vulgaris, bacillus toyonensis and Alkylobacter pacificus which are =0.8-1.0 are inoculated into a sterile test tube containing a culture solution to obtain a bacterial suspension containing mixed bacteria.
c. Inoculation of mixed bacteria: under the aseptic operation environment, the anode substrate is soaked in the bacterial suspension containing the mixed bacteria for symbiotic culture to OD 600 And =1.5 to 1.8, and the anode substrate with the mixed bacteria attached is obtained.
d. Fixing mixed bacteria: and mixing agar and PBS solution, heating to 100 ℃, cooling to 40 ℃, quickly immersing the prepared anode substrate attached with the mixed bacteria, and fixing the mixed bacteria on the anode substrate to obtain the anode of the single-chamber microbial electro-Fenton system.
(2) Preparing a cathode:
a. preparing activated carbon powder loaded with graphene and cobalt: dispersing graphene and activated carbon powder in a mixed solution of water and ethanol, then carrying out hydrothermal treatment in a hydrothermal kettle, and drying to obtain a graphene/activated carbon composite material; and dispersing the graphene/activated carbon composite material and cobalt nitrate into a mixed solution of isopropanol and acetic acid, and drying to obtain the activated carbon powder loaded with graphene and cobalt.
b. Obtaining the cathode of the single-chamber microbial electro-Fenton system: wrapping the graphene and cobalt loaded activated carbon powder by using a titanium mesh, and then rolling into a cylindrical titanium mesh bag to obtain the cathode of the single-chamber microbial electro-Fenton system.
(3) Constructing a single-chamber microbial electro-Fenton system:
and placing the anode and the cathode in the same single chamber, connecting the anode and the cathode with a variable resistor with the external resistance value range of 5-1000 omega through a titanium metal lead, and taking the culture solution without the mixed bacteria and the sewage to be treated as electrolyte to obtain the single-chamber microbial electro-Fenton system.
Wherein, the culture solution includes: PBS solution for maintaining the pH balance of the culture solution, and vitamin solution and trace element solution for providing nutrition for the mixed bacteria.
The content of each component in each milliliter of PBS solution is as follows: 10g of disodium hydrogen phosphate, 2.84g of sodium dihydrogen phosphate, 0.35g of ammonium chloride and 0.15g of potassium chloride.
The vitamin solution per ml comprises the following components: vitamin H2 g, vitamin B9 g, vitamin B1 g, vitamin B2 g, nicotinic acid 5g, calcium pantothenate 5g, vitamin B12.1g, 4-aminobenzoic acid 5g.
The trace element solution per milliliter contains the following components: 2g of nitrilotriacetic acid, 1.5g of magnesium sulfate, 0.55g of manganese sulfate, 1g of sodium chloride, 0.8g of calcium chloride, 0.12g of zinc sulfate, 0.01g of copper sulfate, 0.01g of potassium aluminum sulfate and 0.01g of boric acid.
Example 2: method for treating ship bilge water by using single-chamber microbial electro-Fenton system
(1) Domestication of mixed bacteria: to a single chamber microbial electro-Fenton system was added sodium acetate to a final concentration of 10mM. And adjusting the resistance value of the variable resistor to 1000 omega, closing the circuit to start the microbial electro-Fenton system, and finishing domestication of the mixed bacteria when the system can still output stable current for more than 3 times of circulation.
(2) Treating bilge water: when the output voltage of the anode mixed bacteria is more than 20mV, the variable resistance is adjusted to 10 omega, and bilge water with the volume 2 times that of the culture solution is added into the single-chamber microbial electro-Fenton system for degradation and purification treatment of the bilge water.
Example 3: application of single-chamber microbial electro-Fenton system in treatment of bilge water of ship
FIG. 5 is a schematic view showing a process for treating bilge water in the single-chamber microbial electro-Fenton system according to the present invention. As shown in fig. 5, after the bilge water is primarily treated by sedimentation in a sedimentation tank, oil sludge and foreign particles are filtered out and then discharged into a collection tank by a water pump to be treated. After the microbial electro-Fenton system generates stable voltage, bilge water is pumped into the microbial electro-Fenton system to adsorb and degrade TOC and COD in the bilge water, so that the purpose of purifying the bilge water is achieved. If the treated bilge water meets the discharge requirement, the bilge water is conveyed to a storage cabinet and used for water for a ship toilet or for diluting bilge water with higher concentration; if the standard is not met, the wastewater flows back to the collection cabinet through the three-way valve to be subjected to secondary treatment.
Reaction solution: 80mL of bilge water, wherein the TOC content is about 1900mg/L, and the total COD content is 620mg/L; bilge water temperature: 25 +/-2 ℃; the pH value of the bilge water is 7.1 +/-0.2; the effective area of the anode electrode is 12cm 2 (ii) a The effective area of the cathode electrode is 12cm 2 (ii) a Oxygen rate: 80mL/min.
FIG. 6 is a TOC gas chromatogram before and after bilge water treatment according to the present invention. As shown in fig. 6, after the TOC in the bilge water is subjected to single-chamber microbial electro-fenton degradation for 24 hours, the residual amount of TOC is detected by gas chromatography, and the degradation rate of TOC calculated by an area normalization method is as high as 99.3%. Wherein, the oil content in the treated bilge water is about 8mg/L, which meets the discharge requirement of the ship water pollutant discharge control standard.
FIG. 7 shows the COD degradation rate during the bilge water treatment process of the present invention. And (3) sampling from a residue discharge port of the microbial electro-Fenton reaction system every 2 hours by using an ultraviolet spectrophotometer method to measure the content of COD, and calculating the degradation rate within 24 hours. As can be seen from FIG. 7, when the system working time is 22 hours, the degradation rate of COD reaches 100%, which fully shows that the single-chamber microbial electro-Fenton system constructed by the invention can effectively remove COD in bilge water, and solves the root-cause problem which cannot be solved by the traditional oil-water separation equipment.
In conclusion, the microbial fuel cell and the electro-Fenton reaction are integrated in the single-chamber structure, and the bilge water is treated by utilizing the electrogenesis microbes, so that extra electric energy is not required to be consumed in the treatment process.
While the present invention has been described in detail with reference to the preferred embodiments, it should be understood that the above description should not be taken as limiting the invention. Various modifications and alterations to this invention will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be determined from the following claims.

Claims (9)

1. A single-chamber microbial electro-fenton system, comprising: an anode, a cathode, an electrolyte; the anode and the cathode are arranged in the same single chamber;
the anode includes: the anode base material is formed by rolling a plurality of layers of carbon cloth and plastic nets, and the plastic nets are arranged among the carbon cloth and used for separating the carbon cloth; mixed bacteria are loaded on the anode base material; the mixed bacteria consist of rhodopseudomonas palustris, proteus vulgaris, bacillus toyonensis and alcanivorax pacificus; rhodopseudomonas palustris, proteus vulgaris, bacillus toyonensis, the inoculum size of the methanotrophic pacifica is 4;
the cathode includes: the support is made of a titanium mesh, and activated carbon powder loaded with graphene and cobalt is filled in the support;
the electrolyte includes: sewage to be treated and added nutrient substances; and the mixed bacteria decompose the organic matters in the sewage to be treated to generate electrons for the cathode to utilize.
2. The single-chamber microbial electro-fenton system of claim 1, wherein the anode is prepared by a method comprising:
step 1, rolling a plurality of layers of carbon cloth after heat treatment, and separating the carbon cloth by a plastic net to obtain an anode base material;
step 2, inoculating rhodopseudomonas palustris, bacillus toyonensis and alcanivorax pacificus into a culture solution to obtain a bacterial suspension containing the mixed bacteria;
step 3, placing the anode substrate into a bacterial suspension containing the mixed bacteria, and enabling the mixed bacteria to attach and grow on the carbon cloth to obtain the anode substrate attached with the mixed bacteria;
step 4, carrying out heat treatment on the agar to melt the agar; and placing the anode substrate attached with the mixed bacteria into melted agar, and coating the solidified agar on the surfaces of the carbon cloth and the plastic net so as to fix the mixed bacteria on the anode substrate to obtain the anode.
3. The single-chamber microbial electro-fenton system of claim 2, wherein in step 2, the inoculum size of rhodopseudomonas palustris, proteus vulgaris, bacillus toyonensis, and methanotrophic pacifica is 4.
4. The single-chamber microbial electro-fenton system of claim 1, wherein the cathode is prepared by a method comprising:
step 1, dispersing graphene and activated carbon powder in a mixed solution of water and ethanol, then carrying out hydrothermal treatment in a hydrothermal kettle, and drying to obtain a graphene/activated carbon composite material;
step 2, dispersing the graphene/activated carbon composite material and cobalt nitrate in a mixed solution of isopropanol and acetic acid, and drying to obtain the activated carbon powder loaded with graphene and cobalt;
and 3, wrapping the graphene and cobalt loaded activated carbon powder with a titanium mesh to obtain the cathode.
5. The single-chamber microbial electro-fenton system of claim 1, wherein the electrolyte further comprises: an inorganic salt for maintaining the pH balance of the electrolyte.
6. The single-chamber microbial electro-fenton system of claim 1 wherein a resistor is externally connected between said anode and said cathode.
7. The single-chamber microbial electro-fenton system of claim 6, wherein the resistor is a variable resistor.
8. The single-chamber microbial electro-fenton system of claim 1, wherein the sewage to be treated is ship bilge water.
9. Use of a single-chamber microbial electro-fenton system according to any of the claims 1-8 for degrading organic matter in the bilge water of a ship.
CN202011431652.2A 2020-12-07 2020-12-07 Single-chamber type microbial electro-Fenton system and application thereof Active CN112551681B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011431652.2A CN112551681B (en) 2020-12-07 2020-12-07 Single-chamber type microbial electro-Fenton system and application thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011431652.2A CN112551681B (en) 2020-12-07 2020-12-07 Single-chamber type microbial electro-Fenton system and application thereof

Publications (2)

Publication Number Publication Date
CN112551681A CN112551681A (en) 2021-03-26
CN112551681B true CN112551681B (en) 2023-03-17

Family

ID=75060027

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011431652.2A Active CN112551681B (en) 2020-12-07 2020-12-07 Single-chamber type microbial electro-Fenton system and application thereof

Country Status (1)

Country Link
CN (1) CN112551681B (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017043846A (en) * 2015-08-25 2017-03-02 新日鉄住金化学株式会社 Porous carbon electrode for water treatment and waste water treatment method using the same
CN108630950A (en) * 2018-04-17 2018-10-09 清华大学 Monatomic air cathode, battery, electro-chemical systems and bioelectrochemical system
CN109216717B (en) * 2018-06-15 2021-11-16 清华大学 Catalyst, method for preparing the same, cathode and electrochemical system
CA3031942A1 (en) * 2019-01-30 2020-07-30 Satinder Kaur Brar In situ enzymatic degradation of hydrocarbon-polluted soils
CN110690460B (en) * 2019-09-26 2022-01-04 天津大学 Cathode material and preparation method thereof, bioelectricity Fenton system and construction method thereof
CN111252865B (en) * 2020-02-19 2021-03-12 燕山大学 Method for treating organic wastewater by electrochemical synergistic peroxyacetic acid system

Also Published As

Publication number Publication date
CN112551681A (en) 2021-03-26

Similar Documents

Publication Publication Date Title
Mohan et al. Bioelectricity generation from chemical wastewater treatment in mediatorless (anode) microbial fuel cell (MFC) using selectively enriched hydrogen producing mixed culture under acidophilic microenvironment
Li et al. Energy-positive nitrogen removal using the integrated short-cut nitrification and autotrophic denitrification microbial fuel cells (MFCs)
CN101667649B (en) Microbe fuel cell inoculation and acclimation starting method for energizing organic waste water
Gude Integrating bioelectrochemical systems for sustainable wastewater treatment
CN103145240B (en) Synchronous electricity generating method and device for anaerobic biological treatment of high concentrated organic wastewater
Rahmani et al. Application of the eco-friendly bio-anode for ammonium removal and power generation from wastewater in bio-electrochemical systems
Khan et al. Studies on the biodegradation of two different azo dyes in bioelectrochemical systems
CN112573667A (en) Sewage treatment device and method based on phycomycete symbiotic electrochemical system
Li et al. Performance of denitrifying microbial fuel cell subjected to variation in pH, COD concentration and external resistance
Xie et al. Enhancement of pollutants removal from real sewage by embedding microbial fuel cell in anaerobic–anoxic–oxic wastewater treatment process
CN106630177A (en) Method and device for treating coking wastewater and producing hydrogen gas by microbial electrolysis cell
CA2850533C (en) Method and apparatus for treatment of water-borne contaminants
Li et al. Integrated experimental investigation and mathematical modeling of a membrane bioelectrochemical reactor with an external membrane module
Boghani et al. Reducing the burden of food processing washdown wastewaters using microbial fuel cells
CN112551681B (en) Single-chamber type microbial electro-Fenton system and application thereof
Prasertsung et al. Alkalinity of cassava wastewater feed in anodic enhance electricity generation by a single chamber microbial fuel cells
CN101667650A (en) Microbe fuel cell of cathode interposed structure
CN102086077B (en) Pulse electrochemical process for removing ammonia-nitrogen in landfill leachate
CN105645583B (en) A kind of electricity production method using the treatment device of oily sewage of oil field based on bioelectronics regulation and control
Ma et al. Bioelectricity generation through microbial fuel cell using organic matters recovered from municipal wastewater
Bajracharya Microbial fuel cell coupled with anaerobic treatment processes for wastewater treatment
KR20130051251A (en) Microbial fuel cell using dye wastewater
CN109110911A (en) A kind of drawer type biofilter coupling microbiological fuel cell composite system
CN214400167U (en) Sewage treatment device based on algae bacterium symbiosis electrochemical system
CN111370725B (en) MFC system based on biological dynamic membrane and enhanced electricity generation method

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant