CN106390354A - Method capable of improving anaerobic degradation speed of benzoic acid - Google Patents
Method capable of improving anaerobic degradation speed of benzoic acid Download PDFInfo
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- CN106390354A CN106390354A CN201610796224.7A CN201610796224A CN106390354A CN 106390354 A CN106390354 A CN 106390354A CN 201610796224 A CN201610796224 A CN 201610796224A CN 106390354 A CN106390354 A CN 106390354A
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- benzoic acid
- concentration
- sulfate
- degradation speed
- electric conductivity
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Classifications
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D3/00—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances
- A62D3/30—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by reacting with chemical agents
- A62D3/32—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by reacting with chemical agents by treatment in molten chemical reagent, e.g. salts or metals
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
- C02F11/04—Anaerobic treatment; Production of methane by such 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
- C02F2101/34—Organic compounds containing oxygen
Abstract
The invention discloses a method capable of improving the anaerobic degradation speed of benzoic acid. In the natural anaerobic system, sulfate and conductive ferric oxides are added at the same time, and the degradation speed of the benzoic acid can be improved. The method can be applied to organic pollutant biological treatment and has the wide application prospect.
Description
Technical field
The present invention relates to organic pollutant degradation field, relate more specifically to a kind of raising benzoic acid anaerobic degradation speed
Method.
Background technology
Aromatic compound is the environment dirt that a class has the characteristics such as toxicity, mutagenicity, carcinogenecity and difficult for biological degradation
Dye thing.It is now recognized that aromatic compound can be degraded by the independent action of single microorganism it is also possible to pass through difference
Syntrophism cooperation between microorganism completes to degrade.In anaerobic environment, the primary transformants of aromatic compound generally will be before open loop
Remove or simplify substituted radical, and then change into benzoic acid and phenol, and phenol also can be converted into benzoic acid before open loop.Cause
This, as important mesostate in aromatic compound anaerobism mineralization process, its degraded is for aromatic series for benzoic acid
Most important for the anaerobic degradation of compound.
The at present research of para Toluic Acid includes the microbe to screen and to these compounds not of degraded benzoic acid derivative
Research with metabolic pathway.In nature, benzoic acid metabalism there is also several different approach, according in degradation process to oxygen
Demand and final electron acceptor difference, aerobic degradation and anaerobic degradation can be divided into.Wherein, anaerobic degradation is then first to occur
Reduction reaction eliminates the conjugation of aromatic rings, and then makes its deoxidization, degradation, and this process is with nitrate, sulfate, ferrum or CO2For final
Electron acceptor.
A lot of antibacterials all have benzoic anaerobic degradation ability, mainly include some photosynthetic bacterias, denitrifying bacteria and
Sulfur iron-reducing bacteria etc., in these antibacterials, is mainly degraded through following step para Toluic Acid：(1) benzoic acid is in benzene
Form CoA thioesterase in the presence of formic acid CoA ligase；(2) reduction of phenyl ring；(3) on phenyl ring oh group introducing；
(4) cracking of phenyl ring.However, under natural system, although microorganism is very abundant, system envirment factor is complicated, benzoic acid
Anaerobic degradation rate not high, therefore find a kind of improve natural system under benzoic acid anaerobic degradation rate method, very
With practical value.
Content of the invention
It is an object of the invention to provide a kind of method improving benzoic acid anaerobic degradation speed.
The technical solution used in the present invention is：
A kind of method improving benzoic acid anaerobic degradation speed, in anaerobism natural system, with benzoic acid for substrate of degrading,
Add sulfate and electric conductivity iron oxides simultaneously, improve benzoic acid degradation speed.
Benzoic acid initial concentration is 1～5mM；Sulfate concentration is 3～20mM；In terms of iron atom, electric conductivity iron oxides
Concentration 5～100mM.
As preferred, when benzoic acid initial concentration is 3mM, interpolations sulfate concentration is 12mM, in terms of iron atom, interpolation
Electric conductivity iron oxides concentration is 50mM.
The electrical conductivity of described electric conductivity iron oxides is 10-1000S/cm.
Described sulfate is soluble sulphate.
In described anaerobism natural system, ORP is -30～-180mV.
The invention has the beneficial effects as follows：
In natural anaerobic system, add sulfate and electric conductivity iron oxides simultaneously, benzoic degraded speed can be improved
Rate, the method can be applicable to, in organic pollution biological treatment, have broad application prospects.
Brief description
Fig. 1：The benzoic acid degradation dynamic figure (arrow represents time started second round) of different disposal；
Fig. 2：The benzoic acid degradation dynamic change that variable concentrations magnetic iron ore is processed.
Specific embodiment
By embodiment, the present invention is further explained, but protection domain is not limited only to this.
Embodiment 1
By Zhujiang River bed mud and water with 1:3 (mass volume ratio) mix homogeneously, fills gaseous mixture N2：CO2(v/v=80：20) to no
Oxygen condition (ORP is -30～-180mV), adds 3mM sodium benzoate and 12mM sodium sulfate to carry out enrichment culture.
Dress liquid 98mL in 125mL anaerobism bottle, wherein inoculation bed mud enrichment culture thing 8mL, 120 culture medium 90mL, each
In bottle, the final concentration of 3mM of sodium benzoate, is processed according to table 1 below.
Table 1, interpolation sodium sulfate and the packet of electric conductivity iron oxides
Carry out Anaerobic culturel after process：Fill N2：CO2(v:V=80:20) gaseous mixture, first inflates 1h, then liquid under liquid level
Inflate 30min on face, make whole reaction system be in anaerobic state (ORP is -30～-180mV), be positioned over 30 DEG C of constant incubators
Middle lucifuge quiescent culture.
Wherein 120 culture medium prescriptions are as shown in table 2～4.
Table 2,120 culture medium prescriptions
Table 3,318 vitamin formulas
Table 4,320 trace element formulas：
Concentration of benzoic acid in detection cultivation cycle system, treats that the process reaction of sodium benzoate and sodium sulfate in system terminates
Afterwards, add the benzoic acid of same concentrations again and sodium sulfate carries out secondary enrichment.
Benzoic detection method：After taking supernatant samples to cross 0.22 μm of filter membrane, surveyed with high performance liquid chromatography (HPLC)
Fixed, each sample introduction 20 μ L.Detection wavelength is 213nm.Mobile phase is methanol：0.05mol/L potassium dihydrogen phosphate mixed liquor
(being separately added into glacial acetic acid and each 11.6mL of isopropanol in 500mL0.05mol/L potassium dihydrogen phosphate)=22:78, flow velocity
1mL/min.Eluent A is 5% methanol, and eluent B is 95% methanol.
Result is as shown in figure 1, within two Anaerobic culturel cycles, be not added with sodium sulfate treatment group (Ben and BenM group)
Benzoic acid is entirely without degraded, and the benzoic acid adding sodium sulfate treatment group (BenS group) was completely degraded in 12 days, and explanation adds
Plus sodium sulfate can remarkably promote the anaerobic degradation of sodium benzoate.Add the treatment group of sodium sulfate and electric conductivity iron oxides simultaneously
(BenSM and BenSH group) benzoic acid degradation speed is all significantly better than independent interpolation sodium sulfate treatment group (BenS group), and conduction is described
Property iron oxides can promote benzoic anaerobic degradation under the conditions of sulfate further, and has persistency.
Embodiment 2
By Zhujiang River bed mud and water with 1:3 (mass volume ratio) mix homogeneously, fills gaseous mixture N2∶CO2(v/v=80: 20) are to no
Oxygen condition, adds 3mM sodium benzoate and 12mM sodium sulfate to carry out enrichment culture.
Dress liquid 98mL in 125mL anaerobism bottle, wherein inoculation bed mud enrichment culture thing 8mL, 120 culture medium 90mL, each
In bottle, the final concentration of 3mM of sodium benzoate, is processed according to table 5 below.
Table 5, variable concentrations magnetic iron ore experiment process
120 culture medium prescriptions, Anaerobic culturel, benzoic acid detection method are with described in embodiment 2.
Result as shown in Fig. 2 add sodium sulfate and add again respectively 5,20 and 50mM magnetic iron ore treatment groups (BenSM5,
BenSM20, BenSM50) benzoic acid degradation speed be all significantly better than and independent add sodium sulfate (BenS group).BenSM5、
The benzoic acid degradation rate of BenSM20 and BenSM50 is respectively 1.11,1.42 and 2.26 times of BenS degradation rate, mixing
Magnetic iron ore concentration is that 50mM benzoic acid degradation rate is the fastest.
Claims (8)
1. a kind of improve benzoic acid anaerobic degradation speed method it is characterised in that：In anaerobism natural system, with benzoic acid it is
Degraded substrate, adds sulfate and electric conductivity iron oxides simultaneously, improves benzoic acid degradation speed.
2. according to claim 1 method it is characterised in that：Benzoic acid initial concentration is 1～5mM.
3. according to claim 1 method it is characterised in that：Sulfate concentration is 3～20mM.
4. according to claim 1 method it is characterised in that：In terms of iron atom, electric conductivity iron oxides concentration 5～100mM.
5. method according to claims 2 to 4 it is characterised in that：When benzoic acid initial concentration is 3mM, add sulfate
Concentration is 12mM, and in terms of iron atom, interpolation electric conductivity iron oxides concentration is 50mM.
6. according to claim 1 method it is characterised in that：The electrical conductivity of described electric conductivity iron oxides is 10-1000
S/cm.
7. according to claim 1 method it is characterised in that：Described sulfate is soluble sulphate.
8. according to claim 1 method it is characterised in that：In described anaerobism natural system, ORP is -30 ~ -180mV.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610796224.7A CN106390354A (en) | 2016-08-31 | 2016-08-31 | Method capable of improving anaerobic degradation speed of benzoic acid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610796224.7A CN106390354A (en) | 2016-08-31 | 2016-08-31 | Method capable of improving anaerobic degradation speed of benzoic acid |
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| CN106390354A true CN106390354A (en) | 2017-02-15 |
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| CN201610796224.7A Pending CN106390354A (en) | 2016-08-31 | 2016-08-31 | Method capable of improving anaerobic degradation speed of benzoic acid |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108014634A (en) * | 2017-11-15 | 2018-05-11 | 广东省生态环境技术研究所 | A kind of method for accelerating methane emission reduction |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101269901A (en) * | 2008-05-13 | 2008-09-24 | 广西丽桂环保科技有限公司 | Comprehensive approach for process and cyclic utilization of sewage water |
| CN104961166A (en) * | 2010-11-15 | 2015-10-07 | 阿彻丹尼尔斯米德兰德公司 | Compositions and uses thereof in converting contaminants |
-
2016
- 2016-08-31 CN CN201610796224.7A patent/CN106390354A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101269901A (en) * | 2008-05-13 | 2008-09-24 | 广西丽桂环保科技有限公司 | Comprehensive approach for process and cyclic utilization of sewage water |
| CN104961166A (en) * | 2010-11-15 | 2015-10-07 | 阿彻丹尼尔斯米德兰德公司 | Compositions and uses thereof in converting contaminants |
Non-Patent Citations (2)
| Title |
|---|
| 唐子阳 等: "土壤铁氧化物对有机质产甲烷过程的影响及其机制", 《生态学杂志》 * |
| 牟伯中 等: "微生物对芳香烃的降解作用", 《环境与开发》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108014634A (en) * | 2017-11-15 | 2018-05-11 | 广东省生态环境技术研究所 | A kind of method for accelerating methane emission reduction |
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Application publication date: 20170215 |