Method for degrading organic pollutant through nanometer material photo-reduction and assisted by electricigens

A technology for generating electricity from microorganisms and organic pollutants, which is applied in the fields of sewage or sludge treatment, water, and wastewater. It can solve the problems of low degradation ability of refractory pollutants and achieve the effect of improving the repair ability

Active Publication Date: 2013-02-20
JIANGSU UNIV
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of low degradation ability of electrogenic microorganisms to refractory pollutants, and to establish a method to promote efficient reduction and repair of refractory pollutants by combining electrogenic microorganisms S.oneidensis MR-1 and photoreduction nanomaterials A new approach to technology integration

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  • Method for degrading organic pollutant through nanometer material photo-reduction and assisted by electricigens
  • Method for degrading organic pollutant through nanometer material photo-reduction and assisted by electricigens
  • Method for degrading organic pollutant through nanometer material photo-reduction and assisted by electricigens

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Embodiment Construction

[0027] The thallus S.oneidensis MR-1 of the present invention is a model of electrogenic microorganisms (Genome sequence of the dissimilatory metal ion–reducing bacterium Shewanella oneidensis.Nature Biotechnology.2002,20:1118-1123), developed by Nielsen University of California, USA Presented by the professor; the strain is preserved in the American Type Type Collection Center (ATCC), and the strain number is ATCC 700550 TM . This strain can be purchased directly from the center. The photoreduction nanomaterial used is silver phosphate nanoparticle; the degradation dye used is rhodamine B.

[0028] (1) Streak S.oneidensis MR-1 preserved in glycerol on LB plates and culture overnight at 30°C;

[0029] (2) Pick the activated single colony with a toothpick, inoculate it in 50ml of LB liquid medium, shake it at 30°C and 200rpm to the logarithmic phase, take the logarithmic phase bacterial liquid, centrifuge at 5000rpm for 15min, remove the supernatant, and use S. oneidensis MR...

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Abstract

The invention relates to a novel pollutant processing method for nanometer material photo-reduction degradation and assisted by electricigens. The method combines photo-reduction nanometer material and electricigens and remarkably improves reduction degradation capability of the electricigens on pollutant. The method belongs to the treatment field of water, waste water, sewage or sludge. The method includes adding a photo-reduction nanometer material into an electricigens growth medium, introducing electricigen ShewanellaoneidensisMR-1 to conduct anaerobic culture. In the culture process, the photo nanometer material obtains electron transfer from the electricigens and improves electron energy by illumination excitation, so that pollutant reduction and degradation capability of electrons is improved. The novel degrading method is suitable for reduction degradation treatment of various organic pollutants. By means of the method, a new treatment process and a new technical method can be provided for high-efficiency treatment of pollutant like industrial printing and dyeing waste water. The method has important actual application value and meets national requirements for sustainable development strategy.

Description

technical field [0001] The invention establishes a novel treatment method for combining photoreduction nanomaterials and electricity-producing microorganisms Shewanella oneidensis MR-1, improves the reduction and degradation ability of pollutants, and belongs to the field of water, waste water, sewage or sludge treatment. Background technique [0002] In recent years, due to the rapid development of economy and industry, industrial pollution has brought great harm to the human environment, especially the pollution of industrial sewage to the environment. Nanomaterials are of great interest to scientists and researchers in many fields due to their unique physicochemical properties (eg, ionic aggregation, photoelectric effect, electrical and thermal conductivity, catalytic activity). Therefore, nanotechnology provides new research opportunities for the field of environmental science, and promotes the research on environmental pollution remediation to a deeper level. The searc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34C02F1/70C02F1/30C02F101/30
Inventor 肖翔马晓波吴勇民曹丹鸣雷育斌刘鹏程王明娜杜道林
Owner JIANGSU UNIV
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