Preparation method of multivalent nanometer manganese oxide for effectively removing organic pollutants in water

A technology for removing organic pollutants and water, used in biochemical equipment and methods, water pollutants, microorganism-based methods, etc., and can solve problems such as environmental hazards
CN104140983AInactive Publication Date: 2014-11-12RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
Publication Date
2014-11-12
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a preparation method of a multivalent nanometer manganese oxide for effectively removing organic pollutants in water. The method comprises the following steps: preparing a medium by using yeast extract powder, acid hydrolyzed casein, glucose, HEPES, CaCl2, MgSO4, FeCl3 and trace elements (CuSO4, ZnSO4, CoCl2 and NaMoO4), adjusting the pH value to 6-8 by using 3M of NaOH, carrying out high temperature and high pressure disinfection, inoculating Pseudomonas sp.G7 according to 1%(V / V), carrying out shaking culture in a 20-30DEG C constant temperature culturing box for 20-30h, adding 0.3-0.5mM of a filtered and disinfected aqueous solution of MnCl2, continuously shaking for 12-15d, and washing the obtained precipitate with deionized water to obtain the multivalent nanometer manganese oxide. The above material has very good catalytic activity and stability, 2-chlorophenol converts to formic acid, acetic acid, oxalic acid and other micro-molecular organic acids in the degradation process, and the generation of a superoxide radical by the multivalent activated molecule oxygen of manganese is the main reason causing efficient degradation.
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Description

Technical field

[0001] The invention relates to a preparation method of multivalent nano-manganese oxide, in particular to the study of a new type of nano-manganese oxide for removing 2-chlorophenol from organic pollutants in water. technical background

[0002] Chlorophenolic compounds are the most widely used, toxic and polluting compounds among aromatic compounds. They are mainly used for wood preservation, metal rust prevention, pesticides, herbicides, and the prevention and treatment of schistosomiasis. The extensive use of such pollutants will cause great harm to the environment. The US EPA and China Environmental Monitoring Center have listed many chlorophenol compounds as priority pollutants. Therefore, the development of an effective technical method for the treatment of chlorophenol compounds has been widely concerned.

[0003] As a common mineral component, manganese oxide is ubiquitous in soil and water sediments. Compared with other soil minerals (iron oxide, aluminum...

Claims

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